Difference imaging photometry of blended gravitational microlensing events with a numerical kernel
Identifieur interne : 002C22 ( PascalFrancis/Corpus ); précédent : 002C21; suivant : 002C23Difference imaging photometry of blended gravitational microlensing events with a numerical kernel
Auteurs : M. D. Albrow ; K. Home ; D. M. Bramich ; P. Fouque ; V. R. Miller ; J.-P. Beaulieu ; C. Coutures ; J. Menzies ; A. Williams ; V. Batista ; D. P. Bennett ; S. Brillant ; A. Cassan ; S. Dieters ; D. Dominis Prester ; J. Donatowicz ; J. Greenhill ; N. Kains ; S. R. Kane ; D. Kubas ; J. B. Marquette ; K. R. Pollard ; K. C. Sahu ; Y. Tsapras ; J. Wambsganss ; M. ZubSource :
- Monthly Notices of the Royal Astronomical Society [ 0035-8711 ] ; 2009.
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Abstract
The numerical kernel approach to difference imaging has been implemented and applied to gravitational microlensing events observed by the PLANET collaboration. The effect of an error in the source-star coordinates is explored and a new algorithm is presented for determining the precise coordinates of the microlens in blended events, essential for accurate photometry of difference images. It is shown how the photometric reference flux need not be measured directly from the reference image but can be obtained from measurements of the difference images combined with the knowledge of the statistical flux uncertainties. The improved performance of the new algorithm, relative to ISIS2, is demonstrated.
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Format Inist (serveur)
| NO : | PASCAL 09-0360685 INIST |
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| ET : | Difference imaging photometry of blended gravitational microlensing events with a numerical kernel |
| AU : | ALBROW (M. D.); HOME (K.); BRAMICH (D. M.); FOUQUE (P.); MILLER (V. R.); BEAULIEU (J.-P.); COUTURES (C.); MENZIES (J.); WILLIAMS (A.); BATISTA (V.); BENNETT (D. P.); BRILLANT (S.); CASSAN (A.); DIETERS (S.); DOMINIS PRESTER (D.); DONATOWICZ (J.); GREENHILL (J.); KAINS (N.); KANE (S. R.); KUBAS (D.); MARQUETTE (J. B.); POLLARD (K. R.); SAHU (K. C.); TSAPRAS (Y.); WAMBSGANSS (J.); ZUB (M.) |
| AF : | Beatrice Tinsley Institute, †Department of Physics and Astronomy, University of Canterbury, Private Bag 4800/Christchurch/Nouvelle-Zélande (1 aut., 5 aut., 22 aut.); SUPA, School of Physics and Astronomy, University of St. Andrews/North Haugh, St Andrews, KY16 9SS/Royaume-Uni (2 aut., 18 aut.); Isaac Newton Group of Telescopes, Apartado de Correos 321/38700 Santa Cruz de la Palma, Canary Islands/Espagne (3 aut.); LATT, Universite de Toulouse, CNRS, 14 avenue Edouard Belin/31400 Toulouse/France (4 aut.); Institut dAstrophysique de Paris, CNRS - UMR 7095, Univensite Pierre & Marie Curie, 98bis Bd Arago/75014 Paris/France (6 aut., 7 aut., 10 aut., 14 aut., 21 aut.); CEA, DSM, DAPNIA, Centre d'Études de Saclay/91791 Gif sur-Yvette/France (7 aut.); South African Astronomical Observatory, PO Box 9/7935 Observatory/Afrique du Sud (8 aut.); Perth Observatory, Walnut Road/Bickley, Perth 6076/Australie (9 aut.); University of Notre Dame, Department of Physics, 225 Nieuwland Science Hall/Notre Dame, IN 46556/Etats-Unis (11 aut.); European Southern Observatory, Casilla 19001, Vitacura 19/Santiago/Chili (12 aut., 20 aut.); Astronomisches Rechen-Institut (ARI), Zentrum fur Astronomie (ZAH), Heidelberg University, Monchhofstrasse 12-14/69120 Heidelberg/Allemagne (13 aut., 25 aut., 26 aut.); Department of Physics, University of Rijeka, Omladinska 14/51000 Rijeka/Croatie (15 aut.); Technical University of Vienna, Department of Computing, Wiedner Hauptstrasse 10/Vienna/Autriche (16 aut.); University of Tasmania, School of Maths and Physics, Private bag 37, GPO Hobart/Tasmania 7001/Australie (17 aut.); NASA Exoplanet Science Institute, Caltech, MS 100-22, 770 South Wilson Avenue/Pasadena, CA 91725/Etats-Unis (19 aut.); Space Telescope Science Institute, 3700 San Martin Drive/Baltimore, MD 21218/Etats-Unis (23 aut.); Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, Suite 102/Goleta, CA 93117/Etats-Unis (24 aut.); Astrophysics Research Institute, Liverpool John Moores University/Liverpool CH41 1LD/Royaume-Uni (24 aut.) |
| DT : | Publication en série; Niveau analytique |
| SO : | Monthly Notices of the Royal Astronomical Society; ISSN 0035-8711; Coden MNRAA4; Royaume-Uni; Da. 2009; Vol. 397; No. 4; Pp. 2099-2105; Bibl. 1/4 p. |
| LA : | Anglais |
| EA : | The numerical kernel approach to difference imaging has been implemented and applied to gravitational microlensing events observed by the PLANET collaboration. The effect of an error in the source-star coordinates is explored and a new algorithm is presented for determining the precise coordinates of the microlens in blended events, essential for accurate photometry of difference images. It is shown how the photometric reference flux need not be measured directly from the reference image but can be obtained from measurements of the difference images combined with the knowledge of the statistical flux uncertainties. The improved performance of the new algorithm, relative to ISIS2, is demonstrated. |
| CC : | 001E03 |
| FD : | Photométrie; Microlentille; Planète; Algorithme; Incertitude; Performance; Méthode statistique; Traitement image |
| ED : | Photometry; Microlenses; Planets; Algorithms; Uncertainty; Performance; Statistical method; Image processing |
| SD : | Incertidumbre; Método estadístico |
| LO : | INIST-2067.354000187577090360 |
| ID : | 09-0360685 |
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Pascal:09-0360685Le document en format XML
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Coutures</name><affiliation><inist:fA14 i1="05"><s1>Institut dAstrophysique de Paris, CNRS - UMR 7095, Univensite Pierre & Marie Curie, 98bis Bd Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>21 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="06"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91791 Gif sur-Yvette</s2><s3>FRA</s3><sZ>7 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Menzies, J" sort="Menzies, J" uniqKey="Menzies J" first="J." last="Menzies">J. Menzies</name><affiliation><inist:fA14 i1="07"><s1>South African Astronomical Observatory, PO Box 9</s1><s2>7935 Observatory</s2><s3>ZAF</s3><sZ>8 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Williams, A" sort="Williams, A" uniqKey="Williams A" first="A." last="Williams">A. Williams</name><affiliation><inist:fA14 i1="08"><s1>Perth Observatory, Walnut Road</s1><s2>Bickley, Perth 6076</s2><s3>AUS</s3><sZ>9 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Batista, V" sort="Batista, V" uniqKey="Batista V" first="V." last="Batista">V. Batista</name><affiliation><inist:fA14 i1="05"><s1>Institut dAstrophysique de Paris, CNRS - UMR 7095, Univensite Pierre & Marie Curie, 98bis Bd Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>21 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Bennett, D P" sort="Bennett, D P" uniqKey="Bennett D" first="D. P." last="Bennett">D. P. Bennett</name><affiliation><inist:fA14 i1="09"><s1>University of Notre Dame, Department of Physics, 225 Nieuwland Science Hall</s1><s2>Notre Dame, IN 46556</s2><s3>USA</s3><sZ>11 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Brillant, S" sort="Brillant, S" uniqKey="Brillant S" first="S." last="Brillant">S. Brillant</name><affiliation><inist:fA14 i1="10"><s1>European Southern Observatory, Casilla 19001, Vitacura 19</s1><s2>Santiago</s2><s3>CHL</s3><sZ>12 aut.</sZ><sZ>20 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Cassan, A" sort="Cassan, A" uniqKey="Cassan A" first="A." last="Cassan">A. Cassan</name><affiliation><inist:fA14 i1="11"><s1>Astronomisches Rechen-Institut (ARI), Zentrum fur Astronomie (ZAH), Heidelberg University, Monchhofstrasse 12-14</s1><s2>69120 Heidelberg</s2><s3>DEU</s3><sZ>13 aut.</sZ><sZ>25 aut.</sZ><sZ>26 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Dieters, S" sort="Dieters, S" uniqKey="Dieters S" first="S." last="Dieters">S. Dieters</name><affiliation><inist:fA14 i1="05"><s1>Institut dAstrophysique de Paris, CNRS - UMR 7095, Univensite Pierre & Marie Curie, 98bis Bd Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>21 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Dominis Prester, D" sort="Dominis Prester, D" uniqKey="Dominis Prester D" first="D." last="Dominis Prester">D. Dominis Prester</name><affiliation><inist:fA14 i1="12"><s1>Department of Physics, University of Rijeka, Omladinska 14</s1><s2>51000 Rijeka</s2><s3>HRV</s3><sZ>15 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Donatowicz, J" sort="Donatowicz, J" uniqKey="Donatowicz J" first="J." last="Donatowicz">J. Donatowicz</name><affiliation><inist:fA14 i1="13"><s1>Technical University of Vienna, Department of Computing, Wiedner Hauptstrasse 10</s1><s2>Vienna</s2><s3>AUT</s3><sZ>16 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Greenhill, J" sort="Greenhill, J" uniqKey="Greenhill J" first="J." last="Greenhill">J. Greenhill</name><affiliation><inist:fA14 i1="14"><s1>University of Tasmania, School of Maths and Physics, Private bag 37, GPO Hobart</s1><s2>Tasmania 7001</s2><s3>AUS</s3><sZ>17 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Kains, N" sort="Kains, N" uniqKey="Kains N" first="N." last="Kains">N. Kains</name><affiliation><inist:fA14 i1="02"><s1>SUPA, School of Physics and Astronomy, University of St. Andrews</s1><s2>North Haugh, St Andrews, KY16 9SS</s2><s3>GBR</s3><sZ>2 aut.</sZ><sZ>18 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Kane, S R" sort="Kane, S R" uniqKey="Kane S" first="S. R." last="Kane">S. R. Kane</name><affiliation><inist:fA14 i1="15"><s1>NASA Exoplanet Science Institute, Caltech, MS 100-22, 770 South Wilson Avenue</s1><s2>Pasadena, CA 91725</s2><s3>USA</s3><sZ>19 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Kubas, D" sort="Kubas, D" uniqKey="Kubas D" first="D." last="Kubas">D. Kubas</name><affiliation><inist:fA14 i1="10"><s1>European Southern Observatory, Casilla 19001, Vitacura 19</s1><s2>Santiago</s2><s3>CHL</s3><sZ>12 aut.</sZ><sZ>20 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Marquette, J B" sort="Marquette, J B" uniqKey="Marquette J" first="J. B." last="Marquette">J. B. Marquette</name><affiliation><inist:fA14 i1="05"><s1>Institut dAstrophysique de Paris, CNRS - UMR 7095, Univensite Pierre & Marie Curie, 98bis Bd Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>21 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Pollard, K R" sort="Pollard, K R" uniqKey="Pollard K" first="K. R." last="Pollard">K. R. Pollard</name><affiliation><inist:fA14 i1="01"><s1>Beatrice Tinsley Institute, †Department of Physics and Astronomy, University of Canterbury, Private Bag 4800</s1><s2>Christchurch</s2><s3>NZL</s3><sZ>1 aut.</sZ><sZ>5 aut.</sZ><sZ>22 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Sahu, K C" sort="Sahu, K C" uniqKey="Sahu K" first="K. C." last="Sahu">K. C. Sahu</name><affiliation><inist:fA14 i1="16"><s1>Space Telescope Science Institute, 3700 San Martin Drive</s1><s2>Baltimore, MD 21218</s2><s3>USA</s3><sZ>23 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Tsapras, Y" sort="Tsapras, Y" uniqKey="Tsapras Y" first="Y." last="Tsapras">Y. Tsapras</name><affiliation><inist:fA14 i1="17"><s1>Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, Suite 102</s1><s2>Goleta, CA 93117</s2><s3>USA</s3><sZ>24 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="18"><s1>Astrophysics Research Institute, Liverpool John Moores University</s1><s2>Liverpool CH41 1LD</s2><s3>GBR</s3><sZ>24 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Wambsganss, J" sort="Wambsganss, J" uniqKey="Wambsganss J" first="J." last="Wambsganss">J. Wambsganss</name><affiliation><inist:fA14 i1="11"><s1>Astronomisches Rechen-Institut (ARI), Zentrum fur Astronomie (ZAH), Heidelberg University, Monchhofstrasse 12-14</s1><s2>69120 Heidelberg</s2><s3>DEU</s3><sZ>13 aut.</sZ><sZ>25 aut.</sZ><sZ>26 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Zub, M" sort="Zub, M" uniqKey="Zub M" first="M." last="Zub">M. Zub</name><affiliation><inist:fA14 i1="11"><s1>Astronomisches Rechen-Institut (ARI), Zentrum fur Astronomie (ZAH), Heidelberg University, Monchhofstrasse 12-14</s1><s2>69120 Heidelberg</s2><s3>DEU</s3><sZ>13 aut.</sZ><sZ>25 aut.</sZ><sZ>26 aut.</sZ></inist:fA14></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">09-0360685</idno><date when="2009">2009</date><idno type="stanalyst">PASCAL 09-0360685 INIST</idno><idno type="RBID">Pascal:09-0360685</idno><idno type="wicri:Area/PascalFrancis/Corpus">002C22</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Difference imaging photometry of blended gravitational microlensing events with a numerical kernel</title><author><name sortKey="Albrow, M D" sort="Albrow, M D" uniqKey="Albrow M" first="M. D." last="Albrow">M. D. Albrow</name><affiliation><inist:fA14 i1="01"><s1>Beatrice Tinsley Institute, †Department of Physics and Astronomy, University of Canterbury, Private Bag 4800</s1><s2>Christchurch</s2><s3>NZL</s3><sZ>1 aut.</sZ><sZ>5 aut.</sZ><sZ>22 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Home, K" sort="Home, K" uniqKey="Home K" first="K." last="Home">K. Home</name><affiliation><inist:fA14 i1="02"><s1>SUPA, School of Physics and Astronomy, University of St. Andrews</s1><s2>North Haugh, St Andrews, KY16 9SS</s2><s3>GBR</s3><sZ>2 aut.</sZ><sZ>18 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Bramich, D M" sort="Bramich, D M" uniqKey="Bramich D" first="D. M." last="Bramich">D. M. Bramich</name><affiliation><inist:fA14 i1="03"><s1>Isaac Newton Group of Telescopes, Apartado de Correos 321</s1><s2>38700 Santa Cruz de la Palma, Canary Islands</s2><s3>ESP</s3><sZ>3 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Fouque, P" sort="Fouque, P" uniqKey="Fouque P" first="P." last="Fouque">P. Fouque</name><affiliation><inist:fA14 i1="04"><s1>LATT, Universite de Toulouse, CNRS, 14 avenue Edouard Belin</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>4 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Miller, V R" sort="Miller, V R" uniqKey="Miller V" first="V. R." last="Miller">V. R. Miller</name><affiliation><inist:fA14 i1="01"><s1>Beatrice Tinsley Institute, †Department of Physics and Astronomy, University of Canterbury, Private Bag 4800</s1><s2>Christchurch</s2><s3>NZL</s3><sZ>1 aut.</sZ><sZ>5 aut.</sZ><sZ>22 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Beaulieu, J P" sort="Beaulieu, J P" uniqKey="Beaulieu J" first="J.-P." last="Beaulieu">J.-P. Beaulieu</name><affiliation><inist:fA14 i1="05"><s1>Institut dAstrophysique de Paris, CNRS - UMR 7095, Univensite Pierre & Marie Curie, 98bis Bd Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>21 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Coutures, C" sort="Coutures, C" uniqKey="Coutures C" first="C." last="Coutures">C. Coutures</name><affiliation><inist:fA14 i1="05"><s1>Institut dAstrophysique de Paris, CNRS - UMR 7095, Univensite Pierre & Marie Curie, 98bis Bd Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>21 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="06"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91791 Gif sur-Yvette</s2><s3>FRA</s3><sZ>7 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Menzies, J" sort="Menzies, J" uniqKey="Menzies J" first="J." last="Menzies">J. Menzies</name><affiliation><inist:fA14 i1="07"><s1>South African Astronomical Observatory, PO Box 9</s1><s2>7935 Observatory</s2><s3>ZAF</s3><sZ>8 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Williams, A" sort="Williams, A" uniqKey="Williams A" first="A." last="Williams">A. Williams</name><affiliation><inist:fA14 i1="08"><s1>Perth Observatory, Walnut Road</s1><s2>Bickley, Perth 6076</s2><s3>AUS</s3><sZ>9 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Batista, V" sort="Batista, V" uniqKey="Batista V" first="V." last="Batista">V. Batista</name><affiliation><inist:fA14 i1="05"><s1>Institut dAstrophysique de Paris, CNRS - UMR 7095, Univensite Pierre & Marie Curie, 98bis Bd Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>21 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Bennett, D P" sort="Bennett, D P" uniqKey="Bennett D" first="D. P." last="Bennett">D. P. Bennett</name><affiliation><inist:fA14 i1="09"><s1>University of Notre Dame, Department of Physics, 225 Nieuwland Science Hall</s1><s2>Notre Dame, IN 46556</s2><s3>USA</s3><sZ>11 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Brillant, S" sort="Brillant, S" uniqKey="Brillant S" first="S." last="Brillant">S. Brillant</name><affiliation><inist:fA14 i1="10"><s1>European Southern Observatory, Casilla 19001, Vitacura 19</s1><s2>Santiago</s2><s3>CHL</s3><sZ>12 aut.</sZ><sZ>20 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Cassan, A" sort="Cassan, A" uniqKey="Cassan A" first="A." last="Cassan">A. Cassan</name><affiliation><inist:fA14 i1="11"><s1>Astronomisches Rechen-Institut (ARI), Zentrum fur Astronomie (ZAH), Heidelberg University, Monchhofstrasse 12-14</s1><s2>69120 Heidelberg</s2><s3>DEU</s3><sZ>13 aut.</sZ><sZ>25 aut.</sZ><sZ>26 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Dieters, S" sort="Dieters, S" uniqKey="Dieters S" first="S." last="Dieters">S. Dieters</name><affiliation><inist:fA14 i1="05"><s1>Institut dAstrophysique de Paris, CNRS - UMR 7095, Univensite Pierre & Marie Curie, 98bis Bd Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>21 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Dominis Prester, D" sort="Dominis Prester, D" uniqKey="Dominis Prester D" first="D." last="Dominis Prester">D. Dominis Prester</name><affiliation><inist:fA14 i1="12"><s1>Department of Physics, University of Rijeka, Omladinska 14</s1><s2>51000 Rijeka</s2><s3>HRV</s3><sZ>15 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Donatowicz, J" sort="Donatowicz, J" uniqKey="Donatowicz J" first="J." last="Donatowicz">J. Donatowicz</name><affiliation><inist:fA14 i1="13"><s1>Technical University of Vienna, Department of Computing, Wiedner Hauptstrasse 10</s1><s2>Vienna</s2><s3>AUT</s3><sZ>16 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Greenhill, J" sort="Greenhill, J" uniqKey="Greenhill J" first="J." last="Greenhill">J. Greenhill</name><affiliation><inist:fA14 i1="14"><s1>University of Tasmania, School of Maths and Physics, Private bag 37, GPO Hobart</s1><s2>Tasmania 7001</s2><s3>AUS</s3><sZ>17 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Kains, N" sort="Kains, N" uniqKey="Kains N" first="N." last="Kains">N. Kains</name><affiliation><inist:fA14 i1="02"><s1>SUPA, School of Physics and Astronomy, University of St. Andrews</s1><s2>North Haugh, St Andrews, KY16 9SS</s2><s3>GBR</s3><sZ>2 aut.</sZ><sZ>18 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Kane, S R" sort="Kane, S R" uniqKey="Kane S" first="S. R." last="Kane">S. R. Kane</name><affiliation><inist:fA14 i1="15"><s1>NASA Exoplanet Science Institute, Caltech, MS 100-22, 770 South Wilson Avenue</s1><s2>Pasadena, CA 91725</s2><s3>USA</s3><sZ>19 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Kubas, D" sort="Kubas, D" uniqKey="Kubas D" first="D." last="Kubas">D. Kubas</name><affiliation><inist:fA14 i1="10"><s1>European Southern Observatory, Casilla 19001, Vitacura 19</s1><s2>Santiago</s2><s3>CHL</s3><sZ>12 aut.</sZ><sZ>20 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Marquette, J B" sort="Marquette, J B" uniqKey="Marquette J" first="J. B." last="Marquette">J. B. Marquette</name><affiliation><inist:fA14 i1="05"><s1>Institut dAstrophysique de Paris, CNRS - UMR 7095, Univensite Pierre & Marie Curie, 98bis Bd Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>21 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Pollard, K R" sort="Pollard, K R" uniqKey="Pollard K" first="K. R." last="Pollard">K. R. Pollard</name><affiliation><inist:fA14 i1="01"><s1>Beatrice Tinsley Institute, †Department of Physics and Astronomy, University of Canterbury, Private Bag 4800</s1><s2>Christchurch</s2><s3>NZL</s3><sZ>1 aut.</sZ><sZ>5 aut.</sZ><sZ>22 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Sahu, K C" sort="Sahu, K C" uniqKey="Sahu K" first="K. C." last="Sahu">K. C. Sahu</name><affiliation><inist:fA14 i1="16"><s1>Space Telescope Science Institute, 3700 San Martin Drive</s1><s2>Baltimore, MD 21218</s2><s3>USA</s3><sZ>23 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Tsapras, Y" sort="Tsapras, Y" uniqKey="Tsapras Y" first="Y." last="Tsapras">Y. Tsapras</name><affiliation><inist:fA14 i1="17"><s1>Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, Suite 102</s1><s2>Goleta, CA 93117</s2><s3>USA</s3><sZ>24 aut.</sZ></inist:fA14></affiliation><affiliation><inist:fA14 i1="18"><s1>Astrophysics Research Institute, Liverpool John Moores University</s1><s2>Liverpool CH41 1LD</s2><s3>GBR</s3><sZ>24 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Wambsganss, J" sort="Wambsganss, J" uniqKey="Wambsganss J" first="J." last="Wambsganss">J. Wambsganss</name><affiliation><inist:fA14 i1="11"><s1>Astronomisches Rechen-Institut (ARI), Zentrum fur Astronomie (ZAH), Heidelberg University, Monchhofstrasse 12-14</s1><s2>69120 Heidelberg</s2><s3>DEU</s3><sZ>13 aut.</sZ><sZ>25 aut.</sZ><sZ>26 aut.</sZ></inist:fA14></affiliation></author><author><name sortKey="Zub, M" sort="Zub, M" uniqKey="Zub M" first="M." last="Zub">M. Zub</name><affiliation><inist:fA14 i1="11"><s1>Astronomisches Rechen-Institut (ARI), Zentrum fur Astronomie (ZAH), Heidelberg University, Monchhofstrasse 12-14</s1><s2>69120 Heidelberg</s2><s3>DEU</s3><sZ>13 aut.</sZ><sZ>25 aut.</sZ><sZ>26 aut.</sZ></inist:fA14></affiliation></author></analytic><series><title level="j" type="main">Monthly Notices of the Royal Astronomical Society</title><title level="j" type="abbreviated">Mon. Not. R. Astron. Soc.</title><idno type="ISSN">0035-8711</idno><imprint><date when="2009">2009</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Monthly Notices of the Royal Astronomical Society</title><title level="j" type="abbreviated">Mon. Not. R. Astron. Soc.</title><idno type="ISSN">0035-8711</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Algorithms</term><term>Image processing</term><term>Microlenses</term><term>Performance</term><term>Photometry</term><term>Planets</term><term>Statistical method</term><term>Uncertainty</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Photométrie</term><term>Microlentille</term><term>Planète</term><term>Algorithme</term><term>Incertitude</term><term>Performance</term><term>Méthode statistique</term><term>Traitement image</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The numerical kernel approach to difference imaging has been implemented and applied to gravitational microlensing events observed by the PLANET collaboration. The effect of an error in the source-star coordinates is explored and a new algorithm is presented for determining the precise coordinates of the microlens in blended events, essential for accurate photometry of difference images. It is shown how the photometric reference flux need not be measured directly from the reference image but can be obtained from measurements of the difference images combined with the knowledge of the statistical flux uncertainties. The improved performance of the new algorithm, relative to ISIS2, is demonstrated.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0035-8711</s0></fA01><fA02 i1="01"><s0>MNRAA4</s0></fA02><fA03 i2="1"><s0>Mon. Not. R. Astron. Soc.</s0></fA03><fA05><s2>397</s2></fA05><fA06><s2>4</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Difference imaging photometry of blended gravitational microlensing events with a numerical kernel</s1></fA08><fA11 i1="01" i2="1"><s1>ALBROW (M. D.)</s1></fA11><fA11 i1="02" i2="1"><s1>HOME (K.)</s1></fA11><fA11 i1="03" i2="1"><s1>BRAMICH (D. M.)</s1></fA11><fA11 i1="04" i2="1"><s1>FOUQUE (P.)</s1></fA11><fA11 i1="05" i2="1"><s1>MILLER (V. R.)</s1></fA11><fA11 i1="06" i2="1"><s1>BEAULIEU (J.-P.)</s1></fA11><fA11 i1="07" i2="1"><s1>COUTURES (C.)</s1></fA11><fA11 i1="08" i2="1"><s1>MENZIES (J.)</s1></fA11><fA11 i1="09" i2="1"><s1>WILLIAMS (A.)</s1></fA11><fA11 i1="10" i2="1"><s1>BATISTA (V.)</s1></fA11><fA11 i1="11" i2="1"><s1>BENNETT (D. P.)</s1></fA11><fA11 i1="12" i2="1"><s1>BRILLANT (S.)</s1></fA11><fA11 i1="13" i2="1"><s1>CASSAN (A.)</s1></fA11><fA11 i1="14" i2="1"><s1>DIETERS (S.)</s1></fA11><fA11 i1="15" i2="1"><s1>DOMINIS PRESTER (D.)</s1></fA11><fA11 i1="16" i2="1"><s1>DONATOWICZ (J.)</s1></fA11><fA11 i1="17" i2="1"><s1>GREENHILL (J.)</s1></fA11><fA11 i1="18" i2="1"><s1>KAINS (N.)</s1></fA11><fA11 i1="19" i2="1"><s1>KANE (S. R.)</s1></fA11><fA11 i1="20" i2="1"><s1>KUBAS (D.)</s1></fA11><fA11 i1="21" i2="1"><s1>MARQUETTE (J. B.)</s1></fA11><fA11 i1="22" i2="1"><s1>POLLARD (K. R.)</s1></fA11><fA11 i1="23" i2="1"><s1>SAHU (K. C.)</s1></fA11><fA11 i1="24" i2="1"><s1>TSAPRAS (Y.)</s1></fA11><fA11 i1="25" i2="1"><s1>WAMBSGANSS (J.)</s1></fA11><fA11 i1="26" i2="1"><s1>ZUB (M.)</s1></fA11><fA14 i1="01"><s1>Beatrice Tinsley Institute, †Department of Physics and Astronomy, University of Canterbury, Private Bag 4800</s1><s2>Christchurch</s2><s3>NZL</s3><sZ>1 aut.</sZ><sZ>5 aut.</sZ><sZ>22 aut.</sZ></fA14><fA14 i1="02"><s1>SUPA, School of Physics and Astronomy, University of St. Andrews</s1><s2>North Haugh, St Andrews, KY16 9SS</s2><s3>GBR</s3><sZ>2 aut.</sZ><sZ>18 aut.</sZ></fA14><fA14 i1="03"><s1>Isaac Newton Group of Telescopes, Apartado de Correos 321</s1><s2>38700 Santa Cruz de la Palma, Canary Islands</s2><s3>ESP</s3><sZ>3 aut.</sZ></fA14><fA14 i1="04"><s1>LATT, Universite de Toulouse, CNRS, 14 avenue Edouard Belin</s1><s2>31400 Toulouse</s2><s3>FRA</s3><sZ>4 aut.</sZ></fA14><fA14 i1="05"><s1>Institut dAstrophysique de Paris, CNRS - UMR 7095, Univensite Pierre & Marie Curie, 98bis Bd Arago</s1><s2>75014 Paris</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>10 aut.</sZ><sZ>14 aut.</sZ><sZ>21 aut.</sZ></fA14><fA14 i1="06"><s1>CEA, DSM, DAPNIA, Centre d'Études de Saclay</s1><s2>91791 Gif sur-Yvette</s2><s3>FRA</s3><sZ>7 aut.</sZ></fA14><fA14 i1="07"><s1>South African Astronomical Observatory, PO Box 9</s1><s2>7935 Observatory</s2><s3>ZAF</s3><sZ>8 aut.</sZ></fA14><fA14 i1="08"><s1>Perth Observatory, Walnut Road</s1><s2>Bickley, Perth 6076</s2><s3>AUS</s3><sZ>9 aut.</sZ></fA14><fA14 i1="09"><s1>University of Notre Dame, Department of Physics, 225 Nieuwland Science Hall</s1><s2>Notre Dame, IN 46556</s2><s3>USA</s3><sZ>11 aut.</sZ></fA14><fA14 i1="10"><s1>European Southern Observatory, Casilla 19001, Vitacura 19</s1><s2>Santiago</s2><s3>CHL</s3><sZ>12 aut.</sZ><sZ>20 aut.</sZ></fA14><fA14 i1="11"><s1>Astronomisches Rechen-Institut (ARI), Zentrum fur Astronomie (ZAH), Heidelberg University, Monchhofstrasse 12-14</s1><s2>69120 Heidelberg</s2><s3>DEU</s3><sZ>13 aut.</sZ><sZ>25 aut.</sZ><sZ>26 aut.</sZ></fA14><fA14 i1="12"><s1>Department of Physics, University of Rijeka, Omladinska 14</s1><s2>51000 Rijeka</s2><s3>HRV</s3><sZ>15 aut.</sZ></fA14><fA14 i1="13"><s1>Technical University of Vienna, Department of Computing, Wiedner Hauptstrasse 10</s1><s2>Vienna</s2><s3>AUT</s3><sZ>16 aut.</sZ></fA14><fA14 i1="14"><s1>University of Tasmania, School of Maths and Physics, Private bag 37, GPO Hobart</s1><s2>Tasmania 7001</s2><s3>AUS</s3><sZ>17 aut.</sZ></fA14><fA14 i1="15"><s1>NASA Exoplanet Science Institute, Caltech, MS 100-22, 770 South Wilson Avenue</s1><s2>Pasadena, CA 91725</s2><s3>USA</s3><sZ>19 aut.</sZ></fA14><fA14 i1="16"><s1>Space Telescope Science Institute, 3700 San Martin Drive</s1><s2>Baltimore, MD 21218</s2><s3>USA</s3><sZ>23 aut.</sZ></fA14><fA14 i1="17"><s1>Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, Suite 102</s1><s2>Goleta, CA 93117</s2><s3>USA</s3><sZ>24 aut.</sZ></fA14><fA14 i1="18"><s1>Astrophysics Research Institute, Liverpool John Moores University</s1><s2>Liverpool CH41 1LD</s2><s3>GBR</s3><sZ>24 aut.</sZ></fA14><fA20><s1>2099-2105</s1></fA20><fA21><s1>2009</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>2067</s2><s5>354000187577090360</s5></fA43><fA44><s0>0000</s0><s1>© 2009 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>1/4 p.</s0></fA45><fA47 i1="01" i2="1"><s0>09-0360685</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Monthly Notices of the Royal Astronomical Society</s0></fA64><fA66 i1="01"><s0>GBR</s0></fA66><fC01 i1="01" l="ENG"><s0>The numerical kernel approach to difference imaging has been implemented and applied to gravitational microlensing events observed by the PLANET collaboration. The effect of an error in the source-star coordinates is explored and a new algorithm is presented for determining the precise coordinates of the microlens in blended events, essential for accurate photometry of difference images. It is shown how the photometric reference flux need not be measured directly from the reference image but can be obtained from measurements of the difference images combined with the knowledge of the statistical flux uncertainties. The improved performance of the new algorithm, relative to ISIS2, is demonstrated.</s0></fC01><fC02 i1="01" i2="3"><s0>001E03</s0></fC02><fC03 i1="01" i2="3" l="FRE"><s0>Photométrie</s0><s5>26</s5></fC03><fC03 i1="01" i2="3" l="ENG"><s0>Photometry</s0><s5>26</s5></fC03><fC03 i1="02" i2="3" l="FRE"><s0>Microlentille</s0><s5>27</s5></fC03><fC03 i1="02" i2="3" l="ENG"><s0>Microlenses</s0><s5>27</s5></fC03><fC03 i1="03" i2="3" l="FRE"><s0>Planète</s0><s5>28</s5></fC03><fC03 i1="03" i2="3" l="ENG"><s0>Planets</s0><s5>28</s5></fC03><fC03 i1="04" i2="3" l="FRE"><s0>Algorithme</s0><s5>29</s5></fC03><fC03 i1="04" i2="3" l="ENG"><s0>Algorithms</s0><s5>29</s5></fC03><fC03 i1="05" i2="X" l="FRE"><s0>Incertitude</s0><s5>30</s5></fC03><fC03 i1="05" i2="X" l="ENG"><s0>Uncertainty</s0><s5>30</s5></fC03><fC03 i1="05" i2="X" l="SPA"><s0>Incertidumbre</s0><s5>30</s5></fC03><fC03 i1="06" i2="3" l="FRE"><s0>Performance</s0><s5>31</s5></fC03><fC03 i1="06" i2="3" l="ENG"><s0>Performance</s0><s5>31</s5></fC03><fC03 i1="07" i2="X" l="FRE"><s0>Méthode statistique</s0><s5>32</s5></fC03><fC03 i1="07" i2="X" l="ENG"><s0>Statistical method</s0><s5>32</s5></fC03><fC03 i1="07" i2="X" l="SPA"><s0>Método estadístico</s0><s5>32</s5></fC03><fC03 i1="08" i2="3" l="FRE"><s0>Traitement image</s0><s5>33</s5></fC03><fC03 i1="08" i2="3" l="ENG"><s0>Image processing</s0><s5>33</s5></fC03><fN21><s1>257</s1></fN21><fN44 i1="01"><s1>OTO</s1></fN44><fN82><s1>OTO</s1></fN82></pA></standard><server><NO>PASCAL 09-0360685 INIST</NO><ET>Difference imaging photometry of blended gravitational microlensing events with a numerical kernel</ET><AU>ALBROW (M. D.); HOME (K.); BRAMICH (D. M.); FOUQUE (P.); MILLER (V. R.); BEAULIEU (J.-P.); COUTURES (C.); MENZIES (J.); WILLIAMS (A.); BATISTA (V.); BENNETT (D. P.); BRILLANT (S.); CASSAN (A.); DIETERS (S.); DOMINIS PRESTER (D.); DONATOWICZ (J.); GREENHILL (J.); KAINS (N.); KANE (S. R.); KUBAS (D.); MARQUETTE (J. B.); POLLARD (K. R.); SAHU (K. C.); TSAPRAS (Y.); WAMBSGANSS (J.); ZUB (M.)</AU><AF>Beatrice Tinsley Institute, †Department of Physics and Astronomy, University of Canterbury, Private Bag 4800/Christchurch/Nouvelle-Zélande (1 aut., 5 aut., 22 aut.); SUPA, School of Physics and Astronomy, University of St. Andrews/North Haugh, St Andrews, KY16 9SS/Royaume-Uni (2 aut., 18 aut.); Isaac Newton Group of Telescopes, Apartado de Correos 321/38700 Santa Cruz de la Palma, Canary Islands/Espagne (3 aut.); LATT, Universite de Toulouse, CNRS, 14 avenue Edouard Belin/31400 Toulouse/France (4 aut.); Institut dAstrophysique de Paris, CNRS - UMR 7095, Univensite Pierre & Marie Curie, 98bis Bd Arago/75014 Paris/France (6 aut., 7 aut., 10 aut., 14 aut., 21 aut.); CEA, DSM, DAPNIA, Centre d'Études de Saclay/91791 Gif sur-Yvette/France (7 aut.); South African Astronomical Observatory, PO Box 9/7935 Observatory/Afrique du Sud (8 aut.); Perth Observatory, Walnut Road/Bickley, Perth 6076/Australie (9 aut.); University of Notre Dame, Department of Physics, 225 Nieuwland Science Hall/Notre Dame, IN 46556/Etats-Unis (11 aut.); European Southern Observatory, Casilla 19001, Vitacura 19/Santiago/Chili (12 aut., 20 aut.); Astronomisches Rechen-Institut (ARI), Zentrum fur Astronomie (ZAH), Heidelberg University, Monchhofstrasse 12-14/69120 Heidelberg/Allemagne (13 aut., 25 aut., 26 aut.); Department of Physics, University of Rijeka, Omladinska 14/51000 Rijeka/Croatie (15 aut.); Technical University of Vienna, Department of Computing, Wiedner Hauptstrasse 10/Vienna/Autriche (16 aut.); University of Tasmania, School of Maths and Physics, Private bag 37, GPO Hobart/Tasmania 7001/Australie (17 aut.); NASA Exoplanet Science Institute, Caltech, MS 100-22, 770 South Wilson Avenue/Pasadena, CA 91725/Etats-Unis (19 aut.); Space Telescope Science Institute, 3700 San Martin Drive/Baltimore, MD 21218/Etats-Unis (23 aut.); Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, Suite 102/Goleta, CA 93117/Etats-Unis (24 aut.); Astrophysics Research Institute, Liverpool John Moores University/Liverpool CH41 1LD/Royaume-Uni (24 aut.)</AF><DT>Publication en série; Niveau analytique</DT><SO>Monthly Notices of the Royal Astronomical Society; ISSN 0035-8711; Coden MNRAA4; Royaume-Uni; Da. 2009; Vol. 397; No. 4; Pp. 2099-2105; Bibl. 1/4 p.</SO><LA>Anglais</LA><EA>The numerical kernel approach to difference imaging has been implemented and applied to gravitational microlensing events observed by the PLANET collaboration. The effect of an error in the source-star coordinates is explored and a new algorithm is presented for determining the precise coordinates of the microlens in blended events, essential for accurate photometry of difference images. It is shown how the photometric reference flux need not be measured directly from the reference image but can be obtained from measurements of the difference images combined with the knowledge of the statistical flux uncertainties. The improved performance of the new algorithm, relative to ISIS2, is demonstrated.</EA><CC>001E03</CC><FD>Photométrie; Microlentille; Planète; Algorithme; Incertitude; Performance; Méthode statistique; Traitement image</FD><ED>Photometry; Microlenses; Planets; Algorithms; Uncertainty; Performance; Statistical method; Image processing</ED><SD>Incertidumbre; Método estadístico</SD><LO>INIST-2067.354000187577090360</LO><ID>09-0360685</ID></server></inist></record>Pour manipuler ce document sous Unix (Dilib)
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