Herschel observations of a z 2 stellar mass selected galaxy sample drawn from the GOODS NICMOS Survey

摘要: We present a study of the far-infrared (IR) properties stellar mass selected sample 1.5 \textless z 3 galaxies with log?(M*/M?) \textgreater 9.5 drawn from Great Observatories Origins Deep Survey (GOODS) Near Infrared Camera and Multi-Object Spectrometer (NICMOS) (GNS), deepest H-band Hubble Space Telescope survey its type prior to installation Wide Field (WFC3). use far-IR submm data Photoconductor Array (PACS) Spectral Photometric Imaging Receiver (SPIRE) instruments on-board Herschel, taken PACS Evolutionary Probe (PEP) Herschel Multi-Tiered Extragalactic (HerMES) key projects, respectively. find total 22 GNS galaxies, median = 10.8 2.0, associated 250?mu m sources detected signal-to-noise ratio (SNR) 3. derive mean IR luminosity log?LIR(L?) 12.36 +/- 0.05 corresponding star formation rate (SFR)IR + UV (280 40)?M??yr-1 for these objects, them have dust temperature Tdust similar 35?K. that SFR derived photometry combined ultraviolet (UV)-based estimates unobscured is on average more than factor 2 higher extinction-corrected emission alone, although we note IR-based estimate subject substantial Malmquist bias. To mitigate effect this bias extend our fainter fluxes, perform stacking analysis measure in bins mass. obtain detections at 24s level SPIRE wavelengths samples 10. In contrast SFRIR stacked are comparable those emission, uncertainties large. evidence an increasing fraction obscured mass, finding / ?M*0.7 0.2, which likely consequence massmetallicity relation.