aa29076-16.pdf (526.42 kB)
The faint end of the 250 micron luminosity function at z < 0.5
Version 2 2023-06-12, 06:43
Version 1 2023-06-09, 02:26
journal contribution
posted on 2023-06-12, 06:43 authored by L Wang, P Norberg, M Bethermin, N Bourne, A Cooray, W Cowley, L Dunne, L Dye, S Eales, D Farrah, C Lacey, Jonathan LovedayJonathan Loveday, S Maddox, Seb OliverSeb Oliver, M VieroAims. We aim to study the 250 micron luminosity function (LF) down to much fainter luminosities than achieved by previous efforts. Methods. We developed a modified stacking method to reconstruct the 250 micron LF using optically selected galaxies from the SDSS survey and Herschel maps of the GAMA equatorial fields and Stripe 82. Our stacking method not only recovers the mean 250 micron luminosities of galaxies that are too faint to be individually detected, but also their underlying distribution functions. Results. We find very good agreement with previous measurements in the overlapping luminosity range. More importantly, we are able to derive the LF down to much fainter luminosities (around 25 times fainter) than achieved by previous studies. We find strong positive luminosity evolution \propto (1 + z)^4.89\pm1.07 and moderate negative density evolution \propto (1 + z)^-1.02\pm0.54 over the redshift range z=[0.02, 0.5].
Funding
Astronomy Centre Rolling Grant; G0679; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/F002858/1
History
Publication status
- Published
File Version
- Published version
Journal
Astronomy and AstrophysicsISSN
0004-6361Publisher
EDP SciencesExternal DOI
Volume
592Page range
L5Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2016-08-08First Open Access (FOA) Date
2016-08-08First Compliant Deposit (FCD) Date
2016-08-08Usage metrics
Categories
No categories selectedKeywords
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC