期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 433, 期 2, 页码 1287-1299出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stt811
关键词
galaxies: clusters: individual: XMMU J2235; 3-2557; galaxies: high-redshift; galaxies: star formation; infrared: galaxies
资金
- BASAL Center for Astrophysics and Associated Technologies
- FONDECYT [1100540]
- Australian Research Council [FT0992259]
- BMVIT (Austria)
- ESA-PRODEX (Belgium)
- CEA/CNES (France)
- DLR (Germany)
- ASI (Italy)
- CICYT/MCYT (Spain)
- CSA (Canada)
- NAOC (China)
- CEA (France)
- CNES (France)
- CNRS (France)
- MCINN (Spain)
- SNSB (Sweden)
- STFC (UK)
- UKSA (UK)
- NASA (USA)
- STFC [ST/I001573/1, ST/H005234/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/I001573/1, ST/H005234/1] Funding Source: researchfish
- Grants-in-Aid for Scientific Research [23740144] Funding Source: KAKEN
- Australian Research Council [FT0992259] Funding Source: Australian Research Council
Star formation (SF) in the galaxy populations of local massive clusters is reduced with respect to field galaxies, and tends to be suppressed in the core region. Indications of a reversal of the SF-density relation have been observed in a few z > 1.4 clusters. Using deep imaging from 100-500 mu m from Photodetector Array Camera and Spectrometer (PACS) and Spectral and Photometric Imaging REceiver (SPIRE) onboard Herschel, we investigate infrared properties of spectroscopic and photo-z cluster members, and of H alpha emitters in XMMU J2235.3-2557, one of the most massive, distant, X-ray selected clusters known. Our analysis is based mostly on fitting of the galaxies spectral energy distribution (SED) in the rest-frame 8-1000 mu m. We measure total IR luminosity, deriving star formation rates (SFRs) ranging from 89 to 463 M-circle dot yr(-1) for 13 galaxies individually detected by Herschel, all located beyond the core region (r > 250 kpc). We perform a stacking analysis of nine star-forming members not detected by PACS, yielding a detection with SFR = 48 +/- 16 M-circle dot yr(-1). Using a colour criterion based on a star-forming galaxy SED at the cluster redshift, we select 41 PACS sources as candidate star-forming cluster members. We characterize a population of highly obscured SF galaxies in the outskirts of XMMU J2235.3-2557. We do not find evidence for a reversal of the SF-density relation in this massive, distant cluster.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据