The colours of satellite galaxies in groups and clusters
Identifieur interne : 000177 ( Main/Exploration ); précédent : 000176; suivant : 000178The colours of satellite galaxies in groups and clusters
Auteurs : A. S. Font ; R. G. Bower ; I. G. Mccarthy ; A. J. Benson [États-Unis] ; C. S. Frenk ; J. C. Helly ; C. G. Lacey ; C. M. Baugh ; S. ColeSource :
- Monthly Notices of the Royal Astronomical Society [ 0035-8711 ] ; 2008-10-01.
English descriptors
- KwdEn :
Abstract
Current models of galaxy formation predict satellite galaxies in groups and clusters that are redder than observed. We investigate the effect on the colours of satellite galaxies produced by the ram‐pressure stripping of their hot‐gaseous atmospheres as the satellites orbit within their parent halo. We incorporate a model of the stripping process based on detailed hydrodynamic simulations within the Durham semi‐analytic model of galaxy formation. The simulations show that the environment in groups and clusters is less aggressive than previously assumed. The main uncertainty in the model is the treatment of gas expelled by supernovae. With reasonable assumptions for the stripping of this material, we find that satellite galaxies are able to retain a significant fraction of their hot gas for several Gyr, thereby replenishing their reservoirs of cold, star‐forming gas and remaining blue for a relatively long period of time. A bimodal distribution of galaxy colours, similar to that observed in Sloan Digital Sky Survey data, is established and the colours of the satellite galaxies are in good agreement with the data. In addition, our model naturally accounts for the observed dependence of satellite colours on environment, from small groups to high‐mass clusters.
Url:
DOI: 10.1111/j.1365-2966.2008.13698.x
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">The colours of satellite galaxies in groups and clusters</title><author><name sortKey="Font, A S" sort="Font, A S" uniqKey="Font A" first="A. S." last="Font">A. S. Font</name></author><author><name sortKey="Bower, R G" sort="Bower, R G" uniqKey="Bower R" first="R. G." last="Bower">R. G. Bower</name></author><author><name sortKey="Mccarthy, I G" sort="Mccarthy, I G" uniqKey="Mccarthy I" first="I. G." last="Mccarthy">I. G. Mccarthy</name></author><author><name sortKey="Benson, A J" sort="Benson, A J" uniqKey="Benson A" first="A. J." last="Benson">A. J. Benson</name></author><author><name sortKey="Frenk, C S" sort="Frenk, C S" uniqKey="Frenk C" first="C. S." last="Frenk">C. S. Frenk</name></author><author><name sortKey="Helly, J C" sort="Helly, J C" uniqKey="Helly J" first="J. C." last="Helly">J. C. Helly</name></author><author><name sortKey="Lacey, C G" sort="Lacey, C G" uniqKey="Lacey C" first="C. G." last="Lacey">C. G. Lacey</name></author><author><name sortKey="Baugh, C M" sort="Baugh, C M" uniqKey="Baugh C" first="C. M." last="Baugh">C. M. Baugh</name></author><author><name sortKey="Cole, S" sort="Cole, S" uniqKey="Cole S" first="S." last="Cole">S. Cole</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:9F76C38AA734DEF2985EF1DB0264FD56D0BFE656</idno><date when="2008" year="2008">2008</date><idno type="doi">10.1111/j.1365-2966.2008.13698.x</idno><idno type="url">https://api.istex.fr/document/9F76C38AA734DEF2985EF1DB0264FD56D0BFE656/fulltext/pdf</idno><idno type="wicri:Area/Main/Corpus">000820</idno><idno type="wicri:Area/Main/Curation">000820</idno><idno type="wicri:Area/Main/Exploration">000177</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Exploration">000177</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">The colours of satellite galaxies in groups and clusters</title><author><name sortKey="Font, A S" sort="Font, A S" uniqKey="Font A" first="A. S." last="Font">A. S. Font</name><affiliation><wicri:noCountry code="subField">3LE</wicri:noCountry></affiliation></author><author><name sortKey="Bower, R G" sort="Bower, R G" uniqKey="Bower R" first="R. G." last="Bower">R. G. Bower</name><affiliation><wicri:noCountry code="subField">3LE</wicri:noCountry></affiliation></author><author><name sortKey="Mccarthy, I G" sort="Mccarthy, I G" uniqKey="Mccarthy I" first="I. G." last="Mccarthy">I. G. Mccarthy</name><affiliation><wicri:noCountry code="subField">3LE</wicri:noCountry></affiliation></author><author><name sortKey="Benson, A J" sort="Benson, A J" uniqKey="Benson A" first="A. J." last="Benson">A. J. Benson</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Theoretical Astrophysics, Caltech, MC130‐33, 1200 E. California Blvd., Pasadena CA 91125</wicri:regionArea><wicri:noRegion>Pasadena CA 91125</wicri:noRegion></affiliation></author><author><name sortKey="Frenk, C S" sort="Frenk, C S" uniqKey="Frenk C" first="C. S." last="Frenk">C. S. Frenk</name><affiliation><wicri:noCountry code="subField">3LE</wicri:noCountry></affiliation></author><author><name sortKey="Helly, J C" sort="Helly, J C" uniqKey="Helly J" first="J. C." last="Helly">J. C. Helly</name><affiliation><wicri:noCountry code="subField">3LE</wicri:noCountry></affiliation></author><author><name sortKey="Lacey, C G" sort="Lacey, C G" uniqKey="Lacey C" first="C. G." last="Lacey">C. G. Lacey</name><affiliation><wicri:noCountry code="subField">3LE</wicri:noCountry></affiliation></author><author><name sortKey="Baugh, C M" sort="Baugh, C M" uniqKey="Baugh C" first="C. M." last="Baugh">C. M. Baugh</name><affiliation><wicri:noCountry code="subField">3LE</wicri:noCountry></affiliation></author><author><name sortKey="Cole, S" sort="Cole, S" uniqKey="Cole S" first="S." last="Cole">S. Cole</name><affiliation><wicri:noCountry code="subField">3LE</wicri:noCountry></affiliation></author></analytic><monogr></monogr><series><title level="j">Monthly Notices of the Royal Astronomical Society</title><idno type="ISSN">0035-8711</idno><idno type="eISSN">1365-2966</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2008-10-01">2008-10-01</date><biblScope unit="volume">389</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="1619">1619</biblScope><biblScope unit="page" to="1629">1629</biblScope></imprint><idno type="ISSN">0035-8711</idno></series><idno type="istex">9F76C38AA734DEF2985EF1DB0264FD56D0BFE656</idno><idno type="DOI">10.1111/j.1365-2966.2008.13698.x</idno><idno type="ArticleID">MNR13698</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0035-8711</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>galaxies: clusters: general</term><term>galaxies: evolution</term><term>galaxies: fundamental parameters</term><term>galaxies: luminosity function, mass function</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Current models of galaxy formation predict satellite galaxies in groups and clusters that are redder than observed. We investigate the effect on the colours of satellite galaxies produced by the ram‐pressure stripping of their hot‐gaseous atmospheres as the satellites orbit within their parent halo. We incorporate a model of the stripping process based on detailed hydrodynamic simulations within the Durham semi‐analytic model of galaxy formation. The simulations show that the environment in groups and clusters is less aggressive than previously assumed. The main uncertainty in the model is the treatment of gas expelled by supernovae. With reasonable assumptions for the stripping of this material, we find that satellite galaxies are able to retain a significant fraction of their hot gas for several Gyr, thereby replenishing their reservoirs of cold, star‐forming gas and remaining blue for a relatively long period of time. A bimodal distribution of galaxy colours, similar to that observed in Sloan Digital Sky Survey data, is established and the colours of the satellite galaxies are in good agreement with the data. In addition, our model naturally accounts for the observed dependence of satellite colours on environment, from small groups to high‐mass clusters.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country></list><tree><noCountry><name sortKey="Baugh, C M" sort="Baugh, C M" uniqKey="Baugh C" first="C. M." last="Baugh">C. M. Baugh</name><name sortKey="Bower, R G" sort="Bower, R G" uniqKey="Bower R" first="R. G." last="Bower">R. G. Bower</name><name sortKey="Cole, S" sort="Cole, S" uniqKey="Cole S" first="S." last="Cole">S. Cole</name><name sortKey="Font, A S" sort="Font, A S" uniqKey="Font A" first="A. S." last="Font">A. S. Font</name><name sortKey="Frenk, C S" sort="Frenk, C S" uniqKey="Frenk C" first="C. S." last="Frenk">C. S. Frenk</name><name sortKey="Helly, J C" sort="Helly, J C" uniqKey="Helly J" first="J. C." last="Helly">J. C. Helly</name><name sortKey="Lacey, C G" sort="Lacey, C G" uniqKey="Lacey C" first="C. G." last="Lacey">C. G. Lacey</name><name sortKey="Mccarthy, I G" sort="Mccarthy, I G" uniqKey="Mccarthy I" first="I. G." last="Mccarthy">I. G. Mccarthy</name></noCountry><country name="États-Unis"><noRegion><name sortKey="Benson, A J" sort="Benson, A J" uniqKey="Benson A" first="A. J." last="Benson">A. J. Benson</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Amerique/explor/CaltechV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000177 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000177 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Amerique
|area= CaltechV1
|flux= Main
|étape= Exploration
|type= RBID
|clé= ISTEX:9F76C38AA734DEF2985EF1DB0264FD56D0BFE656
|texte= The colours of satellite galaxies in groups and clusters
}}
| This area was generated with Dilib version V0.6.32. |  |