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Herschel-ATLAS : revealing dust build-up and decline across gas, dust and stellar mass selected samples, I : scaling relations

Pieter De Vis, L Dunne, S Maddox, HL Gomez, CJR Clark, AE Bauer, Sébastien Viaene UGent, SP Schofield, Maarten Baes UGent, AJ Baker, et al. (2017) MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. 464(4). p.4680-4705
abstract
We present a study of the dust, stars and atomic gas (HI) in an HI-selected sample of local galaxies (z < 0.035) in the Herschel Astrophysical Terahertz Large Area Survey fields. This HI-selected sample reveals a population of very high gas fraction (> 80 per cent), low stellar mass sources that appear to be in the earliest stages of their evolution. We compare this sample with dust-and stellar-mass-selected samples to study the dust and gas scaling relations over a wide range of gas fractions (proxy for evolutionary state of a galaxy). The most robust scaling relations for gas and dust are those linked to near-ultraviolet - r (specific star formation rate) and gas fraction; these do not depend on sample selection or environment. At the highest gas fractions, our additional sample shows that the dust content is well below expectations from extrapolating scaling relations for more evolved sources, and dust is not a good tracer of the gas content. The specific dust mass for local galaxies peaks at a gas fraction of similar to 75 per cent. The atomic gas depletion time is also longer for high gas fraction galaxies, opposite to the trend found for molecular gas depletion time-scale. We link this trend to the changing efficiency of conversion of HI to H-2 as galaxies increase in stellar mass surface density during their evolution. Finally, we show that galaxies start out barely obscured and increase in obscuration as they evolve, yet there is no clear and simple link between obscuration and global galaxy properties.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
dust, extinction, ISM: evolution, galaxies: dwarf, galaxies: evolution, galaxies: fundamental parameters, galaxies: ISM, DIGITAL SKY SURVEY, FAST ALPHA SURVEY, LUMINOUS INFRARED GALAXIES, STAR-FORMING GALAXIES, ARECIBO SDSS SURVEY, NEARBY GALAXIES, DATA RELEASE, MOLECULAR GAS, ASSEMBLY GAMA, RADIATIVE-TRANSFER
journal title
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Mon. Not. Roy. Astron. Soc.
volume
464
issue
4
pages
4680 - 4705
Web of Science type
Article
Web of Science id
000393780500067
ISSN
0035-8711
1365-2966
DOI
10.1093/mnras/stw2501
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
8503155
handle
http://hdl.handle.net/1854/LU-8503155
date created
2017-01-20 12:49:07
date last changed
2017-07-31 08:27:35
@article{8503155,
  abstract     = {We present a study of the dust, stars and atomic gas (HI) in an HI-selected sample of local galaxies (z {\textlangle} 0.035) in the Herschel Astrophysical Terahertz Large Area Survey fields. This HI-selected sample reveals a population of very high gas fraction ({\textrangle} 80 per cent), low stellar mass sources that appear to be in the earliest stages of their evolution. We compare this sample with dust-and stellar-mass-selected samples to study the dust and gas scaling relations over a wide range of gas fractions (proxy for evolutionary state of a galaxy). The most robust scaling relations for gas and dust are those linked to near-ultraviolet - r (specific star formation rate) and gas fraction; these do not depend on sample selection or environment. At the highest gas fractions, our additional sample shows that the dust content is well below expectations from extrapolating scaling relations for more evolved sources, and dust is not a good tracer of the gas content. The specific dust mass for local galaxies peaks at a gas fraction of similar to 75 per cent. The atomic gas depletion time is also longer for high gas fraction galaxies, opposite to the trend found for molecular gas depletion time-scale. We link this trend to the changing efficiency of conversion of HI to H-2 as galaxies increase in stellar mass surface density during their evolution. Finally, we show that galaxies start out barely obscured and increase in obscuration as they evolve, yet there is no clear and simple link between obscuration and global galaxy properties.},
  author       = {De Vis, Pieter and Dunne, L and Maddox, S and Gomez, HL and Clark, CJR and Bauer, AE and Viaene, S{\'e}bastien and Schofield, SP and Baes, Maarten and Baker, AJ and Bourne, N and Driver, SP and Dye, S and Eales, SA and Furlanetto, C and Ivison, RJ and Robotham, ASG and Rowlands, K and Smith, DJB and Smith, MWL and Valiante, E and Wright, AH},
  issn         = {0035-8711},
  journal      = {MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY},
  keyword      = {dust,extinction,ISM: evolution,galaxies: dwarf,galaxies: evolution,galaxies: fundamental parameters,galaxies: ISM,DIGITAL SKY SURVEY,FAST ALPHA SURVEY,LUMINOUS INFRARED GALAXIES,STAR-FORMING GALAXIES,ARECIBO SDSS SURVEY,NEARBY GALAXIES,DATA RELEASE,MOLECULAR GAS,ASSEMBLY GAMA,RADIATIVE-TRANSFER},
  language     = {eng},
  number       = {4},
  pages        = {4680--4705},
  title        = {Herschel-ATLAS : revealing dust build-up and decline across gas, dust and stellar mass selected samples, I : scaling relations},
  url          = {http://dx.doi.org/10.1093/mnras/stw2501},
  volume       = {464},
  year         = {2017},
}

Chicago
De Vis, Pieter, L Dunne, S Maddox, HL Gomez, CJR Clark, AE Bauer, Sébastien Viaene, et al. 2017. “Herschel-ATLAS : Revealing Dust Build-up and Decline Across Gas, Dust and Stellar Mass Selected Samples, I : Scaling Relations.” Monthly Notices of the Royal Astronomical Society 464 (4): 4680–4705.
APA
De Vis, P., Dunne, L., Maddox, S., Gomez, H., Clark, C., Bauer, A., Viaene, S., et al. (2017). Herschel-ATLAS : revealing dust build-up and decline across gas, dust and stellar mass selected samples, I : scaling relations. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 464(4), 4680–4705.
Vancouver
1.
De Vis P, Dunne L, Maddox S, Gomez H, Clark C, Bauer A, et al. Herschel-ATLAS : revealing dust build-up and decline across gas, dust and stellar mass selected samples, I : scaling relations. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. 2017;464(4):4680–705.
MLA
De Vis, Pieter, L Dunne, S Maddox, et al. “Herschel-ATLAS : Revealing Dust Build-up and Decline Across Gas, Dust and Stellar Mass Selected Samples, I : Scaling Relations.” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 464.4 (2017): 4680–4705. Print.