10-1093-mnras-stv2717.pdf (3.28 MB)
The HerMES submillimetre local and low-redshift luminosity functions
journal contribution
posted on 2023-06-08, 23:56 authored by L Marchetti, M Vaccari, A Franceschini, V Arumugam, H Aussel, M Béthermin, J Bock, A Boselli, V Buat, D Burgarella, D L Clements, A Conley, L Conversi, A Cooray, C D Dowell, D Farrah, A Feltre, J Glenn, M Griffin, E Hatziminaoglou, S Heinis, E Ibar, R J Ivison, H T Nguyen, B O'Halloran, Seb OliverSeb Oliver, M J Page, A Papageorgiou, C P Pearson, I Pérez-Fournon, M Pohlen, D Rigopoulou, I G Roseboom, M Rowan-Robinson, B Schulz, Douglas Scott, N Seymour, D L Shupe, A J Smith, M Symeonidis, I Valtchanov, M Viero, L Wang, J Wardlow, C K Xu, M ZemcovWe used wide-area surveys over 39 deg2 by the HerMES (Herschel Multi-tiered Extragalactic Survey) collaboration, performed with the Herschel Observatory SPIRE multiwavelength camera, to estimate the low-redshift, 0.02 < z < 0.5, monochromatic luminosity functions (LFs) of galaxies at 250, 350 and 500 µm. Within this redshift interval, we detected 7087 sources in five independent sky areas, ~40 per cent of which have spectroscopic redshifts, while for the remaining objects photometric redshifts were used. The SPIRE LFs in different fields did not show any field-to-field variations beyond the small differences to be expected from cosmic variance. SPIRE flux densities were also combined with Spitzer photometry and multiwavelength archival data to perform a complete spectral energy distribution fitting analysis of SPIRE detected sources to calculate precise k-corrections, as well as the bolometric infrared (IR; 8–1000 µm) LFs and their low-z evolution from a combination of statistical estimators. Integration of the latter prompted us to also compute the local luminosity density and the comoving star formation rate density (SFRD) for our sources, and to compare them with theoretical predictions of galaxy formation models. The LFs show significant and rapid luminosity evolution already at low redshifts, 0.02 < z < 0.2, with L* IR ? (1 + z)6.0±0.4 and _*IR? (1 + z)-2.1±0.4, L*250? (1 + z)5.3±0.2 and _*250? (1 + z)-0.6±0.4 estimated using the IR bolometric and the 250 µm LFs, respectively. Converting our IR LD estimate into an SFRD assuming a standard Salpeter initial mass function and including the unobscured contribution based on the UV dust-uncorrected emission from local galaxies, we estimate an SFRD scaling of SFRD0 + 0.08z, where SFRD0 _ (1.9 ± 0.03) × 10-2 [M_ Mpc-3] is our total SFRD estimate at z ~ 0.02.
Funding
SPIRE; G0649; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; 07-40001
History
Publication status
- Published
File Version
- Published version
Journal
Monthly Notices of the Royal Astronomical SocietyISSN
0035-8711Publisher
Oxford JournalsExternal DOI
Issue
2Volume
456Page range
1999-2023Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2016-01-11First Open Access (FOA) Date
2016-01-11First Compliant Deposit (FCD) Date
2016-01-11Usage metrics
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