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We present an early broad-brush analysis of Herschel/PACS observations of star-forming galaxies in 8 galaxy clusters drawn from our survey of 30 clusters at z~0.2. We define a complete sample of 192 spectroscopically confirmed cluster…

This work uses multiscale environments and structures of galaxies in the Sloan Digital Sky Survey as consistency checks of the evolution from starburst to quiescence at redshift $z < 0.2$. The environmental indicators include fixed aperture…

星系天体物理 · 物理学 2022-09-14 Hassen M. Yesuf

We use extensive new observations of the very rich z ~ 0.4 cluster of galaxies A851 to examine the nature and origin of starburst galaxies in intermediate-redshift clusters. New HST observations, Spitzer photometry and ground-based…

天体物理学 · 物理学 2011-02-11 A. Oemler , A. Dressler , D. Kelson , J. Rigby , B. M. Poggianti , J. Fritz , G. Morrison , I. Smail

Post-starburst galaxies (PSBs) belong to a short-lived transition population between star-forming (SF) and quiescent galaxies. Deciphering their heavily discussed evolutionary pathways is paramount to understanding galaxy evolution. We aim…

星系天体物理 · 物理学 2021-08-11 Marcel Lotz , Klaus Dolag , Rhea-Silvia Remus , Andreas Burkert

We have used a sample of 15749 galaxies taken from the Las Campanas Redshift Survey to investigate the effects of environment on the rate of star formation (SFR) in galaxies. The size and homogeneity of this data set allows us to sample,…

天体物理学 · 物理学 2009-10-30 Yasuhiro Hashimoto , Augustus Oemler , Huan Lin , Douglas L. Tucker

The quenching mechanisms of galaxies are not yet fully understood, but post-starburst galaxies provide one explanation for the rapid transition between star-forming and quiescent galaxies. At low redshift, it is generally thought that the…

星系天体物理 · 物理学 2025-08-15 Emma W. Nielsen , Charles L. Steinhardt , Mathieux Harper , Conor McPartland , Aidan Sedgewick

This paper presents optical long-slit spectroscopic observations of 105 barred Markarian IRAS galaxies. These observations are used to determine the spectral type of emission-line regions in the nucleus and along the bar of the galaxies, in…

天体物理学 · 物理学 2009-10-30 T. Contini , S. Considere , E. Davoust

We analyse high-resolution Hubble Space Telescope/Advanced Camera for Surveys imaging of the nuclear starburst region of M82, obtained as part of the Hubble Heritage mosaic made of this galaxy, in four filters (Johnson-Cousins equivalent B,…

天体物理学 · 物理学 2009-11-13 S. Barker , R. de Grijs , M. Cervino

(abridged) There are good observational reasons to believe that the progenitors of red galaxies have undergone starbursts, followed by a post-starburst phase. We investigate the environments of post-starburst galaxies by measuring…

How do galaxies transform from blue, star-forming spirals to red, quiescent early-type galaxies? To answer this question, we analyzed a set of 26 gas-rich, shocked post-starburst galaxies with Hubble Space Telescope (HST) imaging in B, I,…

We present new deep spectroscopic observations of 0.05--0.5 L_* galaxies in one cluster (cl1232.5-1250) drawn from the ESO Distant Cluster Survey (EDisCS) sample, at z = 0.54. The new data extend the spectroscopy already available for this…

宇宙学与河外天体物理 · 物理学 2015-05-13 Gabriella De Lucia , Bianca M. Poggianti , Claire Halliday , Bo Milvang-Jensen , Stefan Noll , Ian Smail , Dennis Zaritsky

From the VIMOS VLT DEEP Survey (VVDS) we select a sample of 16 galaxies with spectra which identify them as having recently undergone a strong starburst and subsequent fast quenching of star formation. These post-starburst galaxies lie in…

ALMA observations have shown that candidate "post-starburst" galaxies (PSBs) at z$\sim$0.6 can retain significant molecular gas reservoirs. These results would imply that -- unlike many model predictions -- galaxies can shut down their star…

Post-starburst (PSB) galaxies are defined as having experienced a recent burst of star formation, followed by a prompt truncation in further activity. Identifying the mechanism(s) causing a galaxy to experience a post-starburst phase…

We analyze the star formation properties of 16 infrared-selected, spectroscopically confirmed galaxy clusters at $1 < z < 1.5$ from the Spitzer/IRAC Shallow Cluster Survey (ISCS). We present new spectroscopic confirmation for six of these…

Post-starburst galaxies are in the transitional stage between blue, star-forming galaxies and red, quiescent galaxies, and therefore hold important clues for our understanding of galaxy evolution. In this paper, we systematically searched…

星系天体物理 · 物理学 2017-02-15 Petchara Pattarakijwanich , Michael A. Strauss , Shirley Ho , Nicholas P. Ross

We present hydrodynamic simulations of a major merger of disk galaxies, and study the ISM dynamics and star formation properties. High spatial and mass resolutions of 12pc and 4x10^4 M_sol allow to resolve cold and turbulent gas clouds…

宇宙学与河外天体物理 · 物理学 2015-05-19 Romain Teyssier , Damien Chapon , Frederic Bournaud

Galaxy interactions and mergers play a significant, but still debated and poorly understood role in the star formation history of galaxies. Numerical and theoretical models cannot yet explain the main properties of merger-induced…

宇宙学与河外天体物理 · 物理学 2015-05-20 Frederic Bournaud , Leila C. Powell , Damien Chapon , Romain Teyssier