AustralieFrV1, Istex, Corpus, bibRecord, 000D50

Difference imaging photometry of blended gravitational microlensing events with a numerical kernel

Identifieur interne : 000D50 ( Istex/Corpus ); précédent : 000D49; suivant : 000D51

Difference imaging photometry of blended gravitational microlensing events with a numerical kernel

Auteurs : M. D. Albrow ; K. Horne ; D. M. Bramich ; P. Fouqué ; V. R. Miller ; J. 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. Zub

Source :

Monthly Notices of the Royal Astronomical Society [ 0035-8711 ] ; 2009-08-21.

RBID : ISTEX:47D7065FE5601F3E5B7E324BF6189A1AD3FE2D28

English descriptors

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.

Url:

https://api.istex.fr/document/47D7065FE5601F3E5B7E324BF6189A1AD3FE2D28/fulltext/pdf

DOI: 10.1111/j.1365-2966.2009.15098.x

Links to Exploration step

ISTEX:47D7065FE5601F3E5B7E324BF6189A1AD3FE2D28

Le document en format XML

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<author><name sortKey="Greenhill, J" sort="Greenhill, J" uniqKey="Greenhill J" first="J." last="Greenhill">J. Greenhill</name>
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<affiliation><mods:affiliation>Astrophysics Research Institute, Liverpool John Moores University, Liverpool CH41 1LD</mods:affiliation>
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</affiliation>
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<author><name sortKey="Zub, M" sort="Zub, M" uniqKey="Zub M" first="M." last="Zub">M. Zub</name>
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<sourceDesc><biblStruct><analytic><title level="a" type="main">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><mods:affiliation>Beatrice Tinsley Institute, Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand</mods:affiliation>
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<affiliation><mods:affiliation>E-mail: michael.albrow@canterbury.ac.nz</mods:affiliation>
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<author><name sortKey="Horne, K" sort="Horne, K" uniqKey="Horne K" first="K." last="Horne">K. Horne</name>
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</affiliation>
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<author><name sortKey="Bramich, D M" sort="Bramich, D M" uniqKey="Bramich D" first="D. M." last="Bramich">D. M. Bramich</name>
<affiliation><mods:affiliation>Isaac Newton Group of Telescopes, Apartado de Correos 321, E‐38700 Santa Cruz de la Palma, Canary Islands, Spain</mods:affiliation>
</affiliation>
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<author><name sortKey="Fouque, P" sort="Fouque, P" uniqKey="Fouque P" first="P." last="Fouqué">P. Fouqué</name>
<affiliation><mods:affiliation>LATT, Universite de Toulouse, CNRS, 14 avenue Edouard Belin, F‐31400 Toulouse, France</mods:affiliation>
</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><mods:affiliation>Beatrice Tinsley Institute, Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand</mods:affiliation>
</affiliation>
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</affiliation>
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<author><name sortKey="Coutures, C" sort="Coutures, C" uniqKey="Coutures C" first="C." last="Coutures">C. Coutures</name>
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</affiliation>
<affiliation><mods:affiliation>CEA, DSM, DAPNIA, Centre d'Études de Saclay, 91191 Gif‐sur‐Yvette Cedex, France</mods:affiliation>
</affiliation>
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<author><name sortKey="Menzies, J" sort="Menzies, J" uniqKey="Menzies J" first="J." last="Menzies">J. Menzies</name>
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</affiliation>
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<author><name sortKey="Williams, A" sort="Williams, A" uniqKey="Williams A" first="A." last="Williams">A. Williams</name>
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</affiliation>
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<author><name sortKey="Batista, V" sort="Batista, V" uniqKey="Batista V" first="V." last="Batista">V. Batista</name>
<affiliation><mods:affiliation>Institut dAstrophysique de Paris, CNRS ‐ UMR 7095, Universite Pierre & Marie Curie, 98bis Bd Arago, 75014 Paris, France</mods:affiliation>
</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><mods:affiliation>University of Notre Dame, Department of Physics, 225 Nieuwland Science Hall, Notre Dame, IN 46556, USA</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Brillant, S" sort="Brillant, S" uniqKey="Brillant S" first="S." last="Brillant">S. Brillant</name>
<affiliation><mods:affiliation>European Southern Observatory, Casilla 19001, Vitacura 19, Santiago, Chile</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Cassan, A" sort="Cassan, A" uniqKey="Cassan A" first="A." last="Cassan">A. Cassan</name>
<affiliation><mods:affiliation>Astronomisches Rechen‐Institut (ARI), Zentrum fur Astronomie (ZAH), Heidelberg University, Monchhofstrasse 12‐14, 69120 Heidelberg, Germany</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Dieters, S" sort="Dieters, S" uniqKey="Dieters S" first="S." last="Dieters">S. Dieters</name>
<affiliation><mods:affiliation>Institut dAstrophysique de Paris, CNRS ‐ UMR 7095, Universite Pierre & Marie Curie, 98bis Bd Arago, 75014 Paris, France</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Prester, D Dominis" sort="Prester, D Dominis" uniqKey="Prester D" first="D. Dominis" last="Prester">D. Dominis Prester</name>
<affiliation><mods:affiliation>Department of Physics, University of Rijeka, Omladinska 14, 51000 Rijeka, Croatia</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Donatowicz, J" sort="Donatowicz, J" uniqKey="Donatowicz J" first="J." last="Donatowicz">J. Donatowicz</name>
<affiliation><mods:affiliation>Technical University of Vienna, Department of Computing, Wiedner Hauptstrasse 10, Vienna, Austria</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Greenhill, J" sort="Greenhill, J" uniqKey="Greenhill J" first="J." last="Greenhill">J. Greenhill</name>
<affiliation><mods:affiliation>University of Tasmania, School of Maths and Physics, Private bag 37, GPO Hobart, Tasmania 7001, Australia</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Kains, N" sort="Kains, N" uniqKey="Kains N" first="N." last="Kains">N. Kains</name>
<affiliation><mods:affiliation>SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, St Andrews, KY16 9SS</mods:affiliation>
</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><mods:affiliation>NASA Exoplanet Science Institute, Caltech, MS 100‐22, 770 South Wilson Avenue Pasadena, CA 91125, USA</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Kubas, D" sort="Kubas, D" uniqKey="Kubas D" first="D." last="Kubas">D. Kubas</name>
<affiliation><mods:affiliation>European Southern Observatory, Casilla 19001, Vitacura 19, Santiago, Chile</mods:affiliation>
</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><mods:affiliation>Institut dAstrophysique de Paris, CNRS ‐ UMR 7095, Universite Pierre & Marie Curie, 98bis Bd Arago, 75014 Paris, France</mods:affiliation>
</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><mods:affiliation>Beatrice Tinsley Institute, Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand</mods:affiliation>
</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><mods:affiliation>Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA</mods:affiliation>
</affiliation>
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<author><name sortKey="Tsapras, Y" sort="Tsapras, Y" uniqKey="Tsapras Y" first="Y." last="Tsapras">Y. Tsapras</name>
<affiliation><mods:affiliation>Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, Suite 102, Goleta, CA 93117, USA</mods:affiliation>
</affiliation>
<affiliation><mods:affiliation>Astrophysics Research Institute, Liverpool John Moores University, Liverpool CH41 1LD</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Wambsganss, J" sort="Wambsganss, J" uniqKey="Wambsganss J" first="J." last="Wambsganss">J. Wambsganss</name>
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</affiliation>
</author>
<author><name sortKey="Zub, M" sort="Zub, M" uniqKey="Zub M" first="M." last="Zub">M. Zub</name>
<affiliation><mods:affiliation>Astronomisches Rechen‐Institut (ARI), Zentrum fur Astronomie (ZAH), Heidelberg University, Monchhofstrasse 12‐14, 69120 Heidelberg, Germany</mods:affiliation>
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<term>Acta astron</term>
<term>Alard lupton</term>
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<term>Algorithm</term>
<term>Arellano ferro</term>
<term>Astrometric reference</term>
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<term>Blended microlensing events</term>
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<term>Correct coordinates</term>
<term>Correct position</term>
<term>Cubic interpolation</term>
<term>Data points</term>
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<term>Difference imaging</term>
<term>Difference imaging photometry</term>
<term>Effective number</term>
<term>Error bars</term>
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<term>Geometric parameters</term>
<term>Gravitational microlensing</term>
<term>Hessian matrix</term>
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<term>Individual images</term>
<term>Irregular psfs</term>
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<term>Isis code</term>
<term>Journal compilation</term>
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<term>Lens position</term>
<term>Lens star</term>
<term>Light curve</term>
<term>Light curves</term>
<term>Microlensing</term>
<term>Microlensing event</term>
<term>Microlensing event ogle</term>
<term>Microlensing events</term>
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<term>Nearest pixel</term>
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</name>
<name type="personal"><namePart type="given">P.</namePart>
<namePart type="family">Fouqué</namePart>
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<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">V. R.</namePart>
<namePart type="family">Miller</namePart>
<affiliation>Beatrice Tinsley Institute, Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">J.‐P.</namePart>
<namePart type="family">Beaulieu</namePart>
<affiliation>Institut dAstrophysique de Paris, CNRS ‐ UMR 7095, Universite Pierre & Marie Curie, 98bis Bd Arago, 75014 Paris, France</affiliation>
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</name>
<name type="personal"><namePart type="given">C.</namePart>
<namePart type="family">Coutures</namePart>
<affiliation>Institut dAstrophysique de Paris, CNRS ‐ UMR 7095, Universite Pierre & Marie Curie, 98bis Bd Arago, 75014 Paris, France</affiliation>
<affiliation>CEA, DSM, DAPNIA, Centre d'Études de Saclay, 91191 Gif‐sur‐Yvette Cedex, France</affiliation>
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<name type="personal"><namePart type="given">J.</namePart>
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<name type="personal"><namePart type="given">A.</namePart>
<namePart type="family">Williams</namePart>
<affiliation>Perth Observatory, Walnut Road, Bickley, Perth 6076, Australia</affiliation>
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</name>
<name type="personal"><namePart type="given">V.</namePart>
<namePart type="family">Batista</namePart>
<affiliation>Institut dAstrophysique de Paris, CNRS ‐ UMR 7095, Universite Pierre & Marie Curie, 98bis Bd Arago, 75014 Paris, France</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">D. P.</namePart>
<namePart type="family">Bennett</namePart>
<affiliation>University of Notre Dame, Department of Physics, 225 Nieuwland Science Hall, Notre Dame, IN 46556, USA</affiliation>
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</name>
<name type="personal"><namePart type="given">S.</namePart>
<namePart type="family">Brillant</namePart>
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</name>
<name type="personal"><namePart type="given">A.</namePart>
<namePart type="family">Cassan</namePart>
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<name type="personal"><namePart type="given">S.</namePart>
<namePart type="family">Dieters</namePart>
<affiliation>Institut dAstrophysique de Paris, CNRS ‐ UMR 7095, Universite Pierre & Marie Curie, 98bis Bd Arago, 75014 Paris, France</affiliation>
<role><roleTerm type="text">author</roleTerm>
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</name>
<name type="personal"><namePart type="given">D. Dominis</namePart>
<namePart type="family">Prester</namePart>
<affiliation>Department of Physics, University of Rijeka, Omladinska 14, 51000 Rijeka, Croatia</affiliation>
<role><roleTerm type="text">author</roleTerm>
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</name>
<name type="personal"><namePart type="given">J.</namePart>
<namePart type="family">Donatowicz</namePart>
<affiliation>Technical University of Vienna, Department of Computing, Wiedner Hauptstrasse 10, Vienna, Austria</affiliation>
<role><roleTerm type="text">author</roleTerm>
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</name>
<name type="personal"><namePart type="given">J.</namePart>
<namePart type="family">Greenhill</namePart>
<affiliation>University of Tasmania, School of Maths and Physics, Private bag 37, GPO Hobart, Tasmania 7001, Australia</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">N.</namePart>
<namePart type="family">Kains</namePart>
<affiliation>SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, St Andrews, KY16 9SS</affiliation>
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</name>
<name type="personal"><namePart type="given">S. R.</namePart>
<namePart type="family">Kane</namePart>
<affiliation>NASA Exoplanet Science Institute, Caltech, MS 100‐22, 770 South Wilson Avenue Pasadena, CA 91125, USA</affiliation>
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</role>
</name>
<name type="personal"><namePart type="given">D.</namePart>
<namePart type="family">Kubas</namePart>
<affiliation>European Southern Observatory, Casilla 19001, Vitacura 19, Santiago, Chile</affiliation>
<role><roleTerm type="text">author</roleTerm>
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</name>
<name type="personal"><namePart type="given">J. B.</namePart>
<namePart type="family">Marquette</namePart>
<affiliation>Institut dAstrophysique de Paris, CNRS ‐ UMR 7095, Universite Pierre & Marie Curie, 98bis Bd Arago, 75014 Paris, France</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">K. R.</namePart>
<namePart type="family">Pollard</namePart>
<affiliation>Beatrice Tinsley Institute, Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">K. C.</namePart>
<namePart type="family">Sahu</namePart>
<affiliation>Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">Y.</namePart>
<namePart type="family">Tsapras</namePart>
<affiliation>Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, Suite 102, Goleta, CA 93117, USA</affiliation>
<affiliation>Astrophysics Research Institute, Liverpool John Moores University, Liverpool CH41 1LD</affiliation>
<role><roleTerm type="text">author</roleTerm>
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</name>
<name type="personal"><namePart type="given">J.</namePart>
<namePart type="family">Wambsganss</namePart>
<affiliation>Astronomisches Rechen‐Institut (ARI), Zentrum fur Astronomie (ZAH), Heidelberg University, Monchhofstrasse 12‐14, 69120 Heidelberg, Germany</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">M.</namePart>
<namePart type="family">Zub</namePart>
<affiliation>Astronomisches Rechen‐Institut (ARI), Zentrum fur Astronomie (ZAH), Heidelberg University, Monchhofstrasse 12‐14, 69120 Heidelberg, Germany</affiliation>
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<dateIssued encoding="w3cdtf">2009-08-21</dateIssued>
<edition>Accepted 2009 May 18. Received 2009 May 17; in original form 2009 February 3</edition>
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<abstract 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.</abstract>
<subject lang="en"><genre>keywords</genre>
<topic>methods: statistical</topic>
<topic>techniques: image processing</topic>
<topic>techniques: photometric</topic>
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<identifier type="eISSN">1365-2966</identifier>
<identifier type="DOI">10.1111/(ISSN)1365-2966</identifier>
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<part><date>2009</date>
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<number>397</number>
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<number>4</number>
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<identifier type="DOI">10.1111/j.1365-2966.2009.15098.x</identifier>
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<accessCondition type="use and reproduction" contentType="copyright">© 2009 The Authors. Journal compilation © 2009 RAS</accessCondition>
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Difference imaging photometry of blended gravitational microlensing events with a numerical kernel

Difference imaging photometry of blended gravitational microlensing events with a numerical kernel

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