A YOUNG MASSIVE STELLAR POPULATION AROUND THE INTERMEDIATE-MASS BLACK HOLE ESO 243-49 HLX-1
Identifieur interne : 001421 ( PascalFrancis/Checkpoint ); précédent : 001420; suivant : 001422A YOUNG MASSIVE STELLAR POPULATION AROUND THE INTERMEDIATE-MASS BLACK HOLE ESO 243-49 HLX-1
Auteurs : S. A. Farrell [Australie, Royaume-Uni] ; M. Servillat [États-Unis] ; J. Pforr [Royaume-Uni] ; T. J. Maccarone [Royaume-Uni] ; C. Knigge [Royaume-Uni] ; O. Godet [France] ; C. Maraston [Royaume-Uni] ; N. A. Webb [France] ; D. Barret [France] ; A. J. Gosling [Royaume-Uni] ; R. Belmont [France] ; K. Wiersema [Royaume-Uni]Source :
- The Astrophysical journal [ 0004-637X ] ; 2012.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Cosmologie.
English descriptors
- KwdEn :
Abstract
We present Hubble Space Telescope and simultaneous Swift X-ray Telescope observations of the strongest candidate intermediate-mass black hole (IMBH) ESO 243-49 HLX-1. Fitting the spectral energy distribution from X-ray to near-infrared wavelengths showed that the broadband spectrum is not consistent with simple and irradiated disk models, but is well described by a model comprised of an irradiated accretion disk plus a ˜106 M◦. stellar population. The age of the population cannot be uniquely constrained, with both young and old stellar populations allowed. However, the old solution requires excessive disk reprocessing and an extremely small disk, so we favor the young solution (˜13 Myr). In addition, the presence of dust lanes and the lack of any nuclear activity from X-ray observations of the host galaxy suggest that a gas-rich minor merger may have taken place less than ˜200 Myr ago. Such a merger event would explain the presence of the IMBH and the young stellar population.
Affiliations:
- Australie, France, Royaume-Uni, États-Unis
- Angleterre, Midi-Pyrénées, Nouvelle-Galles du Sud, Occitanie (région administrative), Oxfordshire
- Oxford, Sydney, Toulouse
- Université d'Oxford, Université de Sydney
Links toward previous steps (curation, corpus...)
Links to Exploration step
Pascal:12-0121112Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">A YOUNG MASSIVE STELLAR POPULATION AROUND THE INTERMEDIATE-MASS BLACK HOLE ESO 243-49 HLX-1</title><author><name sortKey="Farrell, S A" sort="Farrell, S A" uniqKey="Farrell S" first="S. A." last="Farrell">S. A. Farrell</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Sydney Institute for Astronomy (SIfA), School of Physics, The University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement><region type="état">Nouvelle-Galles du Sud</region></placeName><orgName type="university">Université de Sydney</orgName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Physics and Astronomy, University of Leicester, University Road</s1><s2>LEI 7RH Leicester</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>12 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>LEI 7RH Leicester</wicri:noRegion></affiliation></author><author><name sortKey="Servillat, M" sort="Servillat, M" uniqKey="Servillat M" first="M." last="Servillat">M. Servillat</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, MS-67</s1><s2>Cambridge, MA 02138</s2><s3>USA</s3><sZ>2 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Cambridge, MA 02138</wicri:noRegion></affiliation></author><author><name sortKey="Pforr, J" sort="Pforr, J" uniqKey="Pforr J" first="J." last="Pforr">J. Pforr</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>Institute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Burnaby Road</s1><s2>Portsmouth PO1 3FX</s2><s3>GBR</s3><sZ>3 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Portsmouth PO1 3FX</wicri:noRegion></affiliation></author><author><name sortKey="Maccarone, T J" sort="Maccarone, T J" uniqKey="Maccarone T" first="T. J." last="Maccarone">T. J. Maccarone</name><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>School of Physics and Astronomy, University of Southampton</s1><s2>Hampshire SO17 1BJ</s2><s3>GBR</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Hampshire SO17 1BJ</wicri:noRegion></affiliation></author><author><name sortKey="Knigge, C" sort="Knigge, C" uniqKey="Knigge C" first="C." last="Knigge">C. Knigge</name><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>School of Physics and Astronomy, University of Southampton</s1><s2>Hampshire SO17 1BJ</s2><s3>GBR</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Hampshire SO17 1BJ</wicri:noRegion></affiliation></author><author><name sortKey="Godet, O" sort="Godet, O" uniqKey="Godet O" first="O." last="Godet">O. Godet</name><affiliation wicri:level="3"><inist:fA14 i1="06"><s1>Université de Toulouse, UPS-OMP, Institut de Recherche en Astrophysique et Planétologie (IRAP)</s1><s2>Toulouse</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>11 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Occitanie (région administrative)</region><region type="old region">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>CNRS, IRAP, 9 Avenue du Colonel Roche, BP 44346</s1><s2>31028 Toulouse</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>11 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>31028 Toulouse</wicri:noRegion><placeName><settlement type="city">Toulouse</settlement><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region></placeName></affiliation></author><author><name sortKey="Maraston, C" sort="Maraston, C" uniqKey="Maraston C" first="C." last="Maraston">C. Maraston</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>Institute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Burnaby Road</s1><s2>Portsmouth PO1 3FX</s2><s3>GBR</s3><sZ>3 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Portsmouth PO1 3FX</wicri:noRegion></affiliation></author><author><name sortKey="Webb, N A" sort="Webb, N A" uniqKey="Webb N" first="N. A." last="Webb">N. A. Webb</name><affiliation wicri:level="3"><inist:fA14 i1="06"><s1>Université de Toulouse, UPS-OMP, Institut de Recherche en Astrophysique et Planétologie (IRAP)</s1><s2>Toulouse</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>11 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Occitanie (région administrative)</region><region type="old region">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>CNRS, IRAP, 9 Avenue du Colonel Roche, BP 44346</s1><s2>31028 Toulouse</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>11 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>31028 Toulouse</wicri:noRegion><placeName><settlement type="city">Toulouse</settlement><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region></placeName></affiliation></author><author><name sortKey="Barret, D" sort="Barret, D" uniqKey="Barret D" first="D." last="Barret">D. Barret</name><affiliation wicri:level="3"><inist:fA14 i1="06"><s1>Université de Toulouse, UPS-OMP, Institut de Recherche en Astrophysique et Planétologie (IRAP)</s1><s2>Toulouse</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>11 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Occitanie (région administrative)</region><region type="old region">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>CNRS, IRAP, 9 Avenue du Colonel Roche, BP 44346</s1><s2>31028 Toulouse</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>11 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>31028 Toulouse</wicri:noRegion><placeName><settlement type="city">Toulouse</settlement><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region></placeName></affiliation></author><author><name sortKey="Gosling, A J" sort="Gosling, A J" uniqKey="Gosling A" first="A. J." last="Gosling">A. J. Gosling</name><affiliation wicri:level="4"><inist:fA14 i1="08"><s1>University of Oxford, Department of Physics, Keble Road</s1><s2>Oxford OX1 3RH</s2><s3>GBR</s3><sZ>10 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Oxford OX1 3RH</wicri:noRegion><orgName type="university">Université d'Oxford</orgName><placeName><settlement type="city">Oxford</settlement><region type="nation">Angleterre</region><region type="région" nuts="1">Oxfordshire</region></placeName></affiliation></author><author><name sortKey="Belmont, R" sort="Belmont, R" uniqKey="Belmont R" first="R." last="Belmont">R. Belmont</name><affiliation wicri:level="3"><inist:fA14 i1="06"><s1>Université de Toulouse, UPS-OMP, Institut de Recherche en Astrophysique et Planétologie (IRAP)</s1><s2>Toulouse</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>11 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Occitanie (région administrative)</region><region type="old region">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>CNRS, IRAP, 9 Avenue du Colonel Roche, BP 44346</s1><s2>31028 Toulouse</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>11 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>31028 Toulouse</wicri:noRegion><placeName><settlement type="city">Toulouse</settlement><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region></placeName></affiliation></author><author><name sortKey="Wiersema, K" sort="Wiersema, K" uniqKey="Wiersema K" first="K." last="Wiersema">K. Wiersema</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Physics and Astronomy, University of Leicester, University Road</s1><s2>LEI 7RH Leicester</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>12 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>LEI 7RH Leicester</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">12-0121112</idno><date when="2012">2012</date><idno type="stanalyst">PASCAL 12-0121112 INIST</idno><idno type="RBID">Pascal:12-0121112</idno><idno type="wicri:Area/PascalFrancis/Corpus">001551</idno><idno type="wicri:Area/PascalFrancis/Curation">004961</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">001421</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">001421</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">A YOUNG MASSIVE STELLAR POPULATION AROUND THE INTERMEDIATE-MASS BLACK HOLE ESO 243-49 HLX-1</title><author><name sortKey="Farrell, S A" sort="Farrell, S A" uniqKey="Farrell S" first="S. A." last="Farrell">S. A. Farrell</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Sydney Institute for Astronomy (SIfA), School of Physics, The University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Sydney</settlement><region type="état">Nouvelle-Galles du Sud</region></placeName><orgName type="university">Université de Sydney</orgName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Physics and Astronomy, University of Leicester, University Road</s1><s2>LEI 7RH Leicester</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>12 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>LEI 7RH Leicester</wicri:noRegion></affiliation></author><author><name sortKey="Servillat, M" sort="Servillat, M" uniqKey="Servillat M" first="M." last="Servillat">M. Servillat</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, MS-67</s1><s2>Cambridge, MA 02138</s2><s3>USA</s3><sZ>2 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Cambridge, MA 02138</wicri:noRegion></affiliation></author><author><name sortKey="Pforr, J" sort="Pforr, J" uniqKey="Pforr J" first="J." last="Pforr">J. Pforr</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>Institute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Burnaby Road</s1><s2>Portsmouth PO1 3FX</s2><s3>GBR</s3><sZ>3 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Portsmouth PO1 3FX</wicri:noRegion></affiliation></author><author><name sortKey="Maccarone, T J" sort="Maccarone, T J" uniqKey="Maccarone T" first="T. J." last="Maccarone">T. J. Maccarone</name><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>School of Physics and Astronomy, University of Southampton</s1><s2>Hampshire SO17 1BJ</s2><s3>GBR</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Hampshire SO17 1BJ</wicri:noRegion></affiliation></author><author><name sortKey="Knigge, C" sort="Knigge, C" uniqKey="Knigge C" first="C." last="Knigge">C. Knigge</name><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>School of Physics and Astronomy, University of Southampton</s1><s2>Hampshire SO17 1BJ</s2><s3>GBR</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Hampshire SO17 1BJ</wicri:noRegion></affiliation></author><author><name sortKey="Godet, O" sort="Godet, O" uniqKey="Godet O" first="O." last="Godet">O. Godet</name><affiliation wicri:level="3"><inist:fA14 i1="06"><s1>Université de Toulouse, UPS-OMP, Institut de Recherche en Astrophysique et Planétologie (IRAP)</s1><s2>Toulouse</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>11 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Occitanie (région administrative)</region><region type="old region">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>CNRS, IRAP, 9 Avenue du Colonel Roche, BP 44346</s1><s2>31028 Toulouse</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>11 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>31028 Toulouse</wicri:noRegion><placeName><settlement type="city">Toulouse</settlement><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region></placeName></affiliation></author><author><name sortKey="Maraston, C" sort="Maraston, C" uniqKey="Maraston C" first="C." last="Maraston">C. Maraston</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>Institute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Burnaby Road</s1><s2>Portsmouth PO1 3FX</s2><s3>GBR</s3><sZ>3 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Portsmouth PO1 3FX</wicri:noRegion></affiliation></author><author><name sortKey="Webb, N A" sort="Webb, N A" uniqKey="Webb N" first="N. A." last="Webb">N. A. Webb</name><affiliation wicri:level="3"><inist:fA14 i1="06"><s1>Université de Toulouse, UPS-OMP, Institut de Recherche en Astrophysique et Planétologie (IRAP)</s1><s2>Toulouse</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>11 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Occitanie (région administrative)</region><region type="old region">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>CNRS, IRAP, 9 Avenue du Colonel Roche, BP 44346</s1><s2>31028 Toulouse</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>11 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>31028 Toulouse</wicri:noRegion><placeName><settlement type="city">Toulouse</settlement><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region></placeName></affiliation></author><author><name sortKey="Barret, D" sort="Barret, D" uniqKey="Barret D" first="D." last="Barret">D. Barret</name><affiliation wicri:level="3"><inist:fA14 i1="06"><s1>Université de Toulouse, UPS-OMP, Institut de Recherche en Astrophysique et Planétologie (IRAP)</s1><s2>Toulouse</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>11 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Occitanie (région administrative)</region><region type="old region">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>CNRS, IRAP, 9 Avenue du Colonel Roche, BP 44346</s1><s2>31028 Toulouse</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>11 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>31028 Toulouse</wicri:noRegion><placeName><settlement type="city">Toulouse</settlement><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region></placeName></affiliation></author><author><name sortKey="Gosling, A J" sort="Gosling, A J" uniqKey="Gosling A" first="A. J." last="Gosling">A. J. Gosling</name><affiliation wicri:level="4"><inist:fA14 i1="08"><s1>University of Oxford, Department of Physics, Keble Road</s1><s2>Oxford OX1 3RH</s2><s3>GBR</s3><sZ>10 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Oxford OX1 3RH</wicri:noRegion><orgName type="university">Université d'Oxford</orgName><placeName><settlement type="city">Oxford</settlement><region type="nation">Angleterre</region><region type="région" nuts="1">Oxfordshire</region></placeName></affiliation></author><author><name sortKey="Belmont, R" sort="Belmont, R" uniqKey="Belmont R" first="R." last="Belmont">R. Belmont</name><affiliation wicri:level="3"><inist:fA14 i1="06"><s1>Université de Toulouse, UPS-OMP, Institut de Recherche en Astrophysique et Planétologie (IRAP)</s1><s2>Toulouse</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>11 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Occitanie (région administrative)</region><region type="old region">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>CNRS, IRAP, 9 Avenue du Colonel Roche, BP 44346</s1><s2>31028 Toulouse</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>11 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>31028 Toulouse</wicri:noRegion><placeName><settlement type="city">Toulouse</settlement><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region></placeName></affiliation></author><author><name sortKey="Wiersema, K" sort="Wiersema, K" uniqKey="Wiersema K" first="K." last="Wiersema">K. Wiersema</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Physics and Astronomy, University of Leicester, University Road</s1><s2>LEI 7RH Leicester</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>12 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>LEI 7RH Leicester</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">The Astrophysical journal</title><title level="j" type="abbreviated">Astrophys. j.</title><idno type="ISSN">0004-637X</idno><imprint><date when="2012">2012</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">The Astrophysical journal</title><title level="j" type="abbreviated">Astrophys. j.</title><idno type="ISSN">0004-637X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Accretion</term><term>Accretion disks</term><term>Age</term><term>Binary X ray source</term><term>Black holes</term><term>Cosmic x-ray sources</term><term>Cosmology</term><term>Dust lane</term><term>Galaxies</term><term>Galaxy clusters</term><term>Globular clusters</term><term>Models</term><term>Spectral energy distribution</term><term>Star clusters</term><term>Stellar population</term><term>X ray observation</term><term>X-ray binary stars</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Population stellaire</term><term>Trou noir</term><term>Observation RX</term><term>Densité spectrale énergie</term><term>Modèle</term><term>Disque accrétion</term><term>Age</term><term>Couloir poussière</term><term>Galaxies</term><term>Accrétion</term><term>Amas galaxies</term><term>Amas stellaire</term><term>Amas globulaire</term><term>Binaire RX</term><term>Source RX binaire</term><term>Cosmologie</term><term>Source RX cosmique</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Cosmologie</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We present Hubble Space Telescope and simultaneous Swift X-ray Telescope observations of the strongest candidate intermediate-mass black hole (IMBH) ESO 243-49 HLX-1. Fitting the spectral energy distribution from X-ray to near-infrared wavelengths showed that the broadband spectrum is not consistent with simple and irradiated disk models, but is well described by a model comprised of an irradiated accretion disk plus a ˜10<sup>6</sup> M<sub>◦.</sub> stellar population. The age of the population cannot be uniquely constrained, with both young and old stellar populations allowed. However, the old solution requires excessive disk reprocessing and an extremely small disk, so we favor the young solution (˜13 Myr). In addition, the presence of dust lanes and the lack of any nuclear activity from X-ray observations of the host galaxy suggest that a gas-rich minor merger may have taken place less than ˜200 Myr ago. Such a merger event would explain the presence of the IMBH and the young stellar population.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0004-637X</s0></fA01><fA02 i1="01"><s0>ASJOAB</s0></fA02><fA03 i2="1"><s0>Astrophys. j.</s0></fA03><fA05><s2>747</s2></fA05><fA06><s2>1</s2><s3>p. 2</s3></fA06><fA08 i1="01" i2="1" l="ENG"><s1>A YOUNG MASSIVE STELLAR POPULATION AROUND THE INTERMEDIATE-MASS BLACK HOLE ESO 243-49 HLX-1</s1></fA08><fA11 i1="01" i2="1"><s1>FARRELL (S. A.)</s1></fA11><fA11 i1="02" i2="1"><s1>SERVILLAT (M.)</s1></fA11><fA11 i1="03" i2="1"><s1>PFORR (J.)</s1></fA11><fA11 i1="04" i2="1"><s1>MACCARONE (T. J.)</s1></fA11><fA11 i1="05" i2="1"><s1>KNIGGE (C.)</s1></fA11><fA11 i1="06" i2="1"><s1>GODET (O.)</s1></fA11><fA11 i1="07" i2="1"><s1>MARASTON (C.)</s1></fA11><fA11 i1="08" i2="1"><s1>WEBB (N. A.)</s1></fA11><fA11 i1="09" i2="1"><s1>BARRET (D.)</s1></fA11><fA11 i1="10" i2="1"><s1>GOSLING (A. J.)</s1></fA11><fA11 i1="11" i2="1"><s1>BELMONT (R.)</s1></fA11><fA11 i1="12" i2="1"><s1>WIERSEMA (K.)</s1></fA11><fA14 i1="01"><s1>Sydney Institute for Astronomy (SIfA), School of Physics, The University of Sydney</s1><s2>NSW 2006</s2><s3>AUS</s3><sZ>1 aut.</sZ></fA14><fA14 i1="02"><s1>Department of Physics and Astronomy, University of Leicester, University Road</s1><s2>LEI 7RH Leicester</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>12 aut.</sZ></fA14><fA14 i1="03"><s1>Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, MS-67</s1><s2>Cambridge, MA 02138</s2><s3>USA</s3><sZ>2 aut.</sZ></fA14><fA14 i1="04"><s1>Institute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Burnaby Road</s1><s2>Portsmouth PO1 3FX</s2><s3>GBR</s3><sZ>3 aut.</sZ><sZ>7 aut.</sZ></fA14><fA14 i1="05"><s1>School of Physics and Astronomy, University of Southampton</s1><s2>Hampshire SO17 1BJ</s2><s3>GBR</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ></fA14><fA14 i1="06"><s1>Université de Toulouse, UPS-OMP, Institut de Recherche en Astrophysique et Planétologie (IRAP)</s1><s2>Toulouse</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>11 aut.</sZ></fA14><fA14 i1="07"><s1>CNRS, IRAP, 9 Avenue du Colonel Roche, BP 44346</s1><s2>31028 Toulouse</s2><s3>FRA</s3><sZ>6 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>11 aut.</sZ></fA14><fA14 i1="08"><s1>University of Oxford, Department of Physics, Keble Road</s1><s2>Oxford OX1 3RH</s2><s3>GBR</s3><sZ>10 aut.</sZ></fA14><fA20><s2>L13.1-L13.6</s2></fA20><fA21><s1>2012</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>512</s2><s5>354000502835310130</s5></fA43><fA44><s0>0000</s0><s1>© 2012 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>1/4 p.</s0></fA45><fA47 i1="01" i2="1"><s0>12-0121112</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>The Astrophysical journal</s0></fA64><fA66 i1="01"><s0>GBR</s0></fA66><fC01 i1="01" l="ENG"><s0>We present Hubble Space Telescope and simultaneous Swift X-ray Telescope observations of the strongest candidate intermediate-mass black hole (IMBH) ESO 243-49 HLX-1. Fitting the spectral energy distribution from X-ray to near-infrared wavelengths showed that the broadband spectrum is not consistent with simple and irradiated disk models, but is well described by a model comprised of an irradiated accretion disk plus a ˜10<sup>6</sup> M<sub>◦.</sub> stellar population. The age of the population cannot be uniquely constrained, with both young and old stellar populations allowed. However, the old solution requires excessive disk reprocessing and an extremely small disk, so we favor the young solution (˜13 Myr). In addition, the presence of dust lanes and the lack of any nuclear activity from X-ray observations of the host galaxy suggest that a gas-rich minor merger may have taken place less than ˜200 Myr ago. Such a merger event would explain the presence of the IMBH and the young stellar population.</s0></fC01><fC02 i1="01" i2="3"><s0>001E03</s0></fC02><fC03 i1="01" i2="X" l="FRE"><s0>Population stellaire</s0><s5>26</s5></fC03><fC03 i1="01" i2="X" l="ENG"><s0>Stellar population</s0><s5>26</s5></fC03><fC03 i1="01" i2="X" l="SPA"><s0>Población estelar</s0><s5>26</s5></fC03><fC03 i1="02" i2="3" l="FRE"><s0>Trou noir</s0><s5>27</s5></fC03><fC03 i1="02" i2="3" l="ENG"><s0>Black holes</s0><s5>27</s5></fC03><fC03 i1="03" i2="X" l="FRE"><s0>Observation RX</s0><s5>28</s5></fC03><fC03 i1="03" i2="X" l="ENG"><s0>X ray observation</s0><s5>28</s5></fC03><fC03 i1="03" i2="X" l="SPA"><s0>Observación RX</s0><s5>28</s5></fC03><fC03 i1="04" i2="X" l="FRE"><s0>Densité spectrale énergie</s0><s5>29</s5></fC03><fC03 i1="04" i2="X" l="ENG"><s0>Spectral energy distribution</s0><s5>29</s5></fC03><fC03 i1="04" i2="X" l="SPA"><s0>Densidad espectral energía</s0><s5>29</s5></fC03><fC03 i1="05" i2="X" l="FRE"><s0>Modèle</s0><s5>30</s5></fC03><fC03 i1="05" i2="X" l="ENG"><s0>Models</s0><s5>30</s5></fC03><fC03 i1="05" i2="X" l="SPA"><s0>Modelo</s0><s5>30</s5></fC03><fC03 i1="06" i2="3" l="FRE"><s0>Disque accrétion</s0><s5>31</s5></fC03><fC03 i1="06" i2="3" l="ENG"><s0>Accretion disks</s0><s5>31</s5></fC03><fC03 i1="07" i2="X" l="FRE"><s0>Age</s0><s5>32</s5></fC03><fC03 i1="07" i2="X" l="ENG"><s0>Age</s0><s5>32</s5></fC03><fC03 i1="07" i2="X" l="SPA"><s0>Edad</s0><s5>32</s5></fC03><fC03 i1="08" i2="X" l="FRE"><s0>Couloir poussière</s0><s5>33</s5></fC03><fC03 i1="08" i2="X" l="ENG"><s0>Dust lane</s0><s5>33</s5></fC03><fC03 i1="08" i2="X" l="SPA"><s0>Pasillo polvo</s0><s5>33</s5></fC03><fC03 i1="09" i2="3" l="FRE"><s0>Galaxies</s0><s5>34</s5></fC03><fC03 i1="09" i2="3" l="ENG"><s0>Galaxies</s0><s5>34</s5></fC03><fC03 i1="10" i2="3" l="FRE"><s0>Accrétion</s0><s5>35</s5></fC03><fC03 i1="10" i2="3" l="ENG"><s0>Accretion</s0><s5>35</s5></fC03><fC03 i1="11" i2="3" l="FRE"><s0>Amas galaxies</s0><s5>36</s5></fC03><fC03 i1="11" i2="3" l="ENG"><s0>Galaxy clusters</s0><s5>36</s5></fC03><fC03 i1="12" i2="3" l="FRE"><s0>Amas stellaire</s0><s5>37</s5></fC03><fC03 i1="12" i2="3" l="ENG"><s0>Star clusters</s0><s5>37</s5></fC03><fC03 i1="13" i2="3" l="FRE"><s0>Amas globulaire</s0><s5>38</s5></fC03><fC03 i1="13" i2="3" l="ENG"><s0>Globular clusters</s0><s5>38</s5></fC03><fC03 i1="14" i2="3" l="FRE"><s0>Binaire RX</s0><s5>39</s5></fC03><fC03 i1="14" i2="3" l="ENG"><s0>X-ray binary stars</s0><s5>39</s5></fC03><fC03 i1="15" i2="X" l="FRE"><s0>Source RX binaire</s0><s5>40</s5></fC03><fC03 i1="15" i2="X" l="ENG"><s0>Binary X ray source</s0><s5>40</s5></fC03><fC03 i1="15" i2="X" l="SPA"><s0>Fuente RX binaria</s0><s5>40</s5></fC03><fC03 i1="16" i2="3" l="FRE"><s0>Cosmologie</s0><s5>41</s5></fC03><fC03 i1="16" i2="3" l="ENG"><s0>Cosmology</s0><s5>41</s5></fC03><fC03 i1="17" i2="3" l="FRE"><s0>Source RX cosmique</s0><s5>42</s5></fC03><fC03 i1="17" i2="3" l="ENG"><s0>Cosmic x-ray sources</s0><s5>42</s5></fC03><fN21><s1>093</s1></fN21><fN44 i1="01"><s1>OTO</s1></fN44><fN82><s1>OTO</s1></fN82></pA></standard></inist><affiliations><list><country><li>Australie</li><li>France</li><li>Royaume-Uni</li><li>États-Unis</li></country><region><li>Angleterre</li><li>Midi-Pyrénées</li><li>Nouvelle-Galles du Sud</li><li>Occitanie (région administrative)</li><li>Oxfordshire</li></region><settlement><li>Oxford</li><li>Sydney</li><li>Toulouse</li></settlement><orgName><li>Université d'Oxford</li><li>Université de Sydney</li></orgName></list><tree><country name="Australie"><region name="Nouvelle-Galles du Sud"><name sortKey="Farrell, S A" sort="Farrell, S A" uniqKey="Farrell S" first="S. A." last="Farrell">S. A. Farrell</name></region></country><country name="Royaume-Uni"><noRegion><name sortKey="Farrell, S A" sort="Farrell, S A" uniqKey="Farrell S" first="S. A." last="Farrell">S. A. Farrell</name></noRegion><name sortKey="Gosling, A J" sort="Gosling, A J" uniqKey="Gosling A" first="A. J." last="Gosling">A. J. Gosling</name><name sortKey="Knigge, C" sort="Knigge, C" uniqKey="Knigge C" first="C." last="Knigge">C. Knigge</name><name sortKey="Maccarone, T J" sort="Maccarone, T J" uniqKey="Maccarone T" first="T. J." last="Maccarone">T. J. Maccarone</name><name sortKey="Maraston, C" sort="Maraston, C" uniqKey="Maraston C" first="C." last="Maraston">C. Maraston</name><name sortKey="Pforr, J" sort="Pforr, J" uniqKey="Pforr J" first="J." last="Pforr">J. Pforr</name><name sortKey="Wiersema, K" sort="Wiersema, K" uniqKey="Wiersema K" first="K." last="Wiersema">K. Wiersema</name></country><country name="États-Unis"><noRegion><name sortKey="Servillat, M" sort="Servillat, M" uniqKey="Servillat M" first="M." last="Servillat">M. Servillat</name></noRegion></country><country name="France"><region name="Occitanie (région administrative)"><name sortKey="Godet, O" sort="Godet, O" uniqKey="Godet O" first="O." last="Godet">O. Godet</name></region><name sortKey="Barret, D" sort="Barret, D" uniqKey="Barret D" first="D." last="Barret">D. Barret</name><name sortKey="Barret, D" sort="Barret, D" uniqKey="Barret D" first="D." last="Barret">D. Barret</name><name sortKey="Belmont, R" sort="Belmont, R" uniqKey="Belmont R" first="R." last="Belmont">R. Belmont</name><name sortKey="Belmont, R" sort="Belmont, R" uniqKey="Belmont R" first="R." last="Belmont">R. Belmont</name><name sortKey="Godet, O" sort="Godet, O" uniqKey="Godet O" first="O." last="Godet">O. Godet</name><name sortKey="Webb, N A" sort="Webb, N A" uniqKey="Webb N" first="N. A." last="Webb">N. A. Webb</name><name sortKey="Webb, N A" sort="Webb, N A" uniqKey="Webb N" first="N. A." last="Webb">N. A. Webb</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Asie/explor/AustralieFrV1/Data/PascalFrancis/Checkpoint
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 001421 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/PascalFrancis/Checkpoint/biblio.hfd -nk 001421 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Asie
|area= AustralieFrV1
|flux= PascalFrancis
|étape= Checkpoint
|type= RBID
|clé= Pascal:12-0121112
|texte= A YOUNG MASSIVE STELLAR POPULATION AROUND THE INTERMEDIATE-MASS BLACK HOLE ESO 243-49 HLX-1
}}
| This area was generated with Dilib version V0.6.33. |  |