Ferrara, A., Sommovigo, L., Dayal, P., Pallottini, A., Bouwens, R. J., Gonzalez, V, Inami, H., Smit, R., Bowler, R. A. A., Endsley, R., Oesch, P., Schouws, S., Stark, D., Stefanon, M., Aravena, M., da Cunha, E., De Looze, I, Fudamoto, Y., Graziani, L., Hodge, J., Riechers, D., Schneider, R., Algera, H. S. B., Barrufet, L., Hygate, A. P. S., Labbe, I, Li, C., Nanayakkara, T., Topping, M. and van der Werf, P. (2022). The ALMA REBELS Survey. Epoch of Reionization giants: Properties of dusty galaxies at z approximate to 7. Mon. Not. Roy. Astron. Soc., 512 (1). S. 58 - 73. OXFORD: OXFORD UNIV PRESS. ISSN 1365-2966

Full text not available from this repository.

Abstract

We analyse FIR dust continuum measurements for 14 galaxies (redshift z approximate to 7) in the ALMA Reionization Era Bright Emission Line Survey (REBELS) Large Program to derive their physical properties. Our model uses three input data, i.e. (a) the UV spectral slope, beta, (b) the observed UV continuum flux at 1500 angstrom, F-1500, (c) the observed continuum flux at approximate to 158 mu m, F-158, and considers Milky Way (MW) and SMC extinction curves, along with different dust geometries. We find that REBELS galaxies have 28-90.5 per cent of their star formation obscured; the total (UV+IR) star formation rates are in the range 31.5 < SFR/(M-circle dot yr(-1)) < 129.5. The sample-averaged dust mass and temperature are (1.3 +/- 1.1) x 10(7) M-circle dot and 52 +/- 11 K, respectively. However, in some galaxies dust is particularly abundant (REBELS-14, M-d' approximate to 3.4 x 10(7) M-circle dot), or hot (REBELS-18, T-d' approximate to 67 K). The dust distribution is compact (<0.3 kpc for 70 per cent of the galaxies). The inferred dust yield per supernova is 0.1 <= y(d)/M-circle dot <= 3.3, with 70 per cent of the galaxies requiring y(d) < 0.25 M-circle dot. Three galaxies (REBELS-12, 14, 39) require y(d) > 1 M-circle dot, which is likely inconsistent with pure SN production, and might require dust growth via accretion of heavy elements from the interstellar medium. With the SFR predicted by the model and a MW extinction curve, REBELS galaxies detected in [C II] nicely follow the local L-CII-SFR relation, and are approximately located on the Kennicutt-Schmidt relation. The sample-averaged gas depletion time is 0.11 y(p)(-2) Gyr, where y(p) is the ratio of the gas-to-stellar distribution radius. For some systems, a solution simultaneously matching the observed (beta, F-1500, F-158) values cannot be found. This occurs when the index I-m = (F-158/F-1500)/(beta - beta(int)), where beta(int) is the intrinsic UV slope, exceeds I-m* approximate to 1120 for an MW curve. For these objects, we argue that the FIR and UV emitting regions are not co-spatial, questioning the use of the IRX-beta relation.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Ferrara, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sommovigo, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dayal, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pallottini, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bouwens, R. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gonzalez, VUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Inami, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Smit, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bowler, R. A. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Endsley, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Oesch, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schouws, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stark, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stefanon, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Aravena, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
da Cunha, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
De Looze, IUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fudamoto, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Graziani, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hodge, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Riechers, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schneider, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Algera, H. S. B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Barrufet, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hygate, A. P. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Labbe, IUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Li, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nanayakkara, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Topping, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
van der Werf, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-697715
DOI: 10.1093/mnras/stac460
Journal or Publication Title: Mon. Not. Roy. Astron. Soc.
Volume: 512
Number: 1
Page Range: S. 58 - 73
Date: 2022
Publisher: OXFORD UNIV PRESS
Place of Publication: OXFORD
ISSN: 1365-2966
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
STAR-FORMING GALAXIES; UV LUMINOSITY FUNCTIONS; C-II EMISSION; BRIGHT END; MILKY-WAY; MASS; EVOLUTION; REDSHIFT; ATTENUATION; TEMPERATUREMultiple languages
Astronomy & AstrophysicsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/69771

Downloads

Downloads per month over past year

Altmetric

Export

Actions (login required)

View Item View Item