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Did most present-day spirals form during the last 8 Gyr? A formation history with violent episodes revealed by panchromatic observations
Hammer, F; Flores, H; Elbaz, D; Zheng, XZ; Liang, YC; Cesarsky, C
2005
发表期刊ASTRONOMY & ASTROPHYSICS
卷号430期号:1页码:115-128
摘要Studies of distant galaxies have shown that ellipticals and large spirals (Schade et al. 1999, ApJ, 525, 31; Lilly et al. 1998, ApJ, 500, 75) were already in place 8 Gyr ago, leading to a very modest recent star formation (Brinchmann & Ellis 2000, ApJ, 536, L77) in intermediate mass galaxies (3-30 x 10(10) M.). This is challenged by a recent analysis (Heavens et al. 2004, Nature, 428, 625) of the fossil record of the stellar populations of similar to10(5) nearby galaxies, which shows that intermediate mass galaxies formed or assembled the bulk of their stars 4 to 8 Gyr ago. Here we present direct observational evidence supporting this findings from a long term, multi-wavelength study of 195 z > 0.4 intermediate mass galaxies, mostly selected from the Canada France Redshift Survey (CFRS). We show that recent and efficient star formation is revealed at IR wavelengths since similar to15% of intermediate mass galaxies at z > 0.4 are indeed luminous IR galaxies (LIRGs), a phenomenon far more common than in the local Universe. The star formation in LIRGs is sufficient in itself to produce 38% of the total stellar mass of intermediate mass galaxies and then to account for most of the reported stellar mass formation since z = 1.
关键词Galaxies : Formation Galaxies : Structure Infrared : Galaxies Galaxies : Starburst Galaxies : Spiral
DOI10.1051/0004-6361:20041471
收录类别SCI
语种英语
WOS记录号WOS:000226295000016
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文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8156
专题光学天文研究部
作者单位1.Observ Paris, Lab Galaxies Etoiles Phys & Instrumentat, F-92195 Meudon, France
2.CEA, Saclay SAp, F-91191 Gif Sur Yvette, France
3.Max Planck Inst Astron, D-69117 Heidelberg, Germany
4.Chinese Acad Sci, Natl Astron Observ, Beijing, Peoples R China
5.ESO, D-85748 Garching, Germany
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Hammer, F,Flores, H,Elbaz, D,et al. Did most present-day spirals form during the last 8 Gyr? A formation history with violent episodes revealed by panchromatic observations[J]. ASTRONOMY & ASTROPHYSICS,2005,430(1):115-128.
APA Hammer, F,Flores, H,Elbaz, D,Zheng, XZ,Liang, YC,&Cesarsky, C.(2005).Did most present-day spirals form during the last 8 Gyr? A formation history with violent episodes revealed by panchromatic observations.ASTRONOMY & ASTROPHYSICS,430(1),115-128.
MLA Hammer, F,et al."Did most present-day spirals form during the last 8 Gyr? A formation history with violent episodes revealed by panchromatic observations".ASTRONOMY & ASTROPHYSICS 430.1(2005):115-128.
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