SDSS J150634.27+013331.6: the second compact elliptical galaxy in the NGC 5846 group☆

被引：26

作者：

Chilingarian, Igor V. ^{[1
,2
]}

Bergond, Gilles ^{[3
,4
]}

机构：

[1] Univ Strasbourg, CNRS, Observ Astron Strasbourg, Ctr Donnees Astron Strasbourg,UMR 7550, F-67000 Strasbourg, France

[2] Moscow MV Lomonosov State Univ, Sternberg Astron Inst, Moscow 119992, Russia

[3] Ctr Astron Hispano Aleman, Calar Alto Observ, Almeria 04004, Spain

[4] Inst Astrofis Andalucia CSIC, Granada 18008, Spain

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2010年 / 405卷 / 01期

基金：

美国国家科学基金会;

关键词：

galaxies: dwarf; galaxies: elliptical and lenticular; cD; galaxies: evolution; galaxies: stellar content; galaxies: kinematics and dynamics; DWARF GALAXIES; FORNAX CLUSTER; SKY SURVEY; STELLAR POPULATIONS; LUMINOSITY FUNCTION; ABUNDANCE RATIOS; SYSTEMS; KINEMATICS; PHOTOMETRY; EVOLUTION;

D O I：

10.1111/j.1745-3933.2010.00849.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the discovery of the second compact elliptical (cE) galaxy SDSS J150634.27+013331.6 in the nearby NGC 5846 group by the Virtual Observatory (VO) workflow. This object (M(B) = -15.98 mag, R(e) = 0.24 kpc) becomes the fifth cE where the spatially resolved kinematics and stellar populations can be obtained. We used archival HST WFPC2 images to demonstrate that its light profile has a two-component structure, and integrated photometry from GALEX, SDSS, UKIDSS and Spitzer to build the multiwavelength spectral energy distribution to constrain the star formation history (SFH). We observed this galaxy with the PMAS IFU spectrograph at the Calar-Alto 3.5-m telescope and obtained two-dimensional maps of its kinematics and stellar population properties using the full-spectral fitting technique. Its structural, dynamical and stellar population properties suggest that it had a massive progenitor heavily tidally stripped by NGC 5846.

引用

页码：L11 / L15

页数：5

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