| タイトル | The IMACS Cluster Building Survey. I. Description of the Survey and Analysis Methods |
| 本文（外部サイト） | http://hdl.handle.net/2060/20140010837 |
| 著者（英） | Fritz, Jacopo; Vulcani, Benedetta; Rieke, George; Kelson, Daniel; Poggianti, Bianca M.; Villanueva, Edward; Oemler Jr., Augustus; Gladders, Michael G.; Bai, Lei; Dressler, Alan; Rigby, Jane R. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2013-06-10 |
| 言語 | eng |
| 内容記述 | The IMACS Cluster Building Survey uses the wide field spectroscopic capabilities of the IMACS spectrograph on the 6.5 m Baade Telescope to survey the large-scale environment surrounding rich intermediate-redshift clusters of galaxies. The goal is to understand the processes which may be transforming star-forming field galaxies into quiescent cluster members as groups and individual galaxies fall into the cluster from the surrounding supercluster. This first paper describes the survey: the data taking and reduction methods. We provide new calibrations of star formation rates (SFRs) derived from optical and infrared spectroscopy and photometry. We demonstrate that there is a tight relation between the observed SFR per unit B luminosity, and the ratio of the extinctions of the stellar continuum and the optical emission lines.With this, we can obtain accurate extinction-corrected colors of galaxies. Using these colors as well as other spectral measures, we determine new criteria for the existence of ongoing and recent starbursts in galaxies. |
| NASA分類 | Astrophysics |
| レポートNO | GSFC-E-DAA-TN11458 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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