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xGASS: H I Fueling of Star Formation in Disk-dominated Galaxies
Wang, Jing1; Catinella, Barbara2,3; Saintonge, Amelie4; Pan, Zhizheng5; Serra, Paolo6; Shao, Li7
2020-02-10
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume890Issue:1Pages:17
Corresponding AuthorWang, Jing()
AbstractWe introduce a method to estimate the H I mass within the optical radius of disk galaxies from integrated H I spectra, with an uncertainty of 0.09 dex. We use these estimates to study how inner H I fuels star formation in late-type disk galaxies. We find that star formation rate (SFR) at a given stellar mass (M*) is well correlated with the inner H I surface density (Sigma(H) (I,in)) and inner H I mass-to-stellar mass ratio. For the massive (M* > 10(10)M(circle dot)) disk galaxies, higher SFR at a given stellar mass is also related to higher efficiency of converting inner H I to molecular gas, but no such correlation is found for the total H I mass. The highest Sigma(H I,in) and the fastest depletion of the total neutral gas within the optical disks are found in the most compact and star-forming disk galaxies at a given stellar mass. These results highlight the important role of inner H I as an intermediate step of fueling star formation in disk galaxies.
DOI10.3847/1538-4357/ab68dd
WOS KeywordARECIBO SDSS SURVEY ; PHASE-3 BILLION YEARS ; GAS DEPLETION TIME ; NEARBY GALAXIES ; IRREGULAR GALAXIES ; MASSIVE GALAXIES ; MOLECULAR GAS ; HIGH-REDSHIFT ; FORMATION EFFICIENCY ; FORMATION HISTORIES
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000522095800063
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/35926
Collection中国科学院紫金山天文台
Corresponding AuthorWang, Jing
Affiliation1.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China
2.Univ Western Australia, ICRAR, Crawley, WA 6009, Australia
3.Australian Res Council, Ctr Excellence All Sky Astrophys 3 Dimens ASTRO 3, Melbourne, Vic, Australia
4.UCL, Dept Phys & Astron, Gower Pl, London WC1E 6BT, England
5.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Peoples R China
6.INAF, Osservatorio Astron Cagliari, Via Sci 5, I-09047 Selargius, CA, Italy
7.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Wang, Jing,Catinella, Barbara,Saintonge, Amelie,et al. xGASS: H I Fueling of Star Formation in Disk-dominated Galaxies[J]. ASTROPHYSICAL JOURNAL,2020,890(1):17.
APA Wang, Jing,Catinella, Barbara,Saintonge, Amelie,Pan, Zhizheng,Serra, Paolo,&Shao, Li.(2020).xGASS: H I Fueling of Star Formation in Disk-dominated Galaxies.ASTROPHYSICAL JOURNAL,890(1),17.
MLA Wang, Jing,et al."xGASS: H I Fueling of Star Formation in Disk-dominated Galaxies".ASTROPHYSICAL JOURNAL 890.1(2020):17.
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