Galaxy And Mass Assembly (GAMA): The group H I mass as a function of halo mass

被引：8

作者：

Dev, Ajay ^{[1
]}

Driver, Simon P. ^{[1
]}

Meyer, Martin ^{[1
]}

Roychowdhury, Sambit ^{[1
,2
,3
]}

Rhee, Jonghwan ^{[1
,2
]}

Stevens, Adam R. H. ^{[1
]}

Lagos, Claudia del P. ^{[1
,2
,4
]}

Bland-Hawthorn, Joss ^{[5
]}

Catinella, Barbara ^{[1
,2
]}

Hopkins, A. M. ^{[6
]}

Loveday, Jonathan ^{[7
]}

Obreschkow, Danail ^{[1
,2
]}

Phillipps, Steven ^{[8
]}

Robotham, Aaron S. G. ^{[1
]}

机构：

[1] Univ Western Australia, Int Ctr Radio Astron Res, M468,35 Stirling Highway, Perth, WA 6009, Australia

[2] ARC Ctr Excellence All Sky Astrophys 3 Dimens AST, Perth, Australia

[3] Univ Observ Munich USM, Scheinerstr 1, D-81679 Munich, Germany

[4] Cosm Dawn Ctr DAWN, Copenhagen, Denmark

[5] Univ Sydney, Sydney Inst Astron, Sch Phys A28, Sydney, NSW 2006, Australia

[6] Macquarie Univ, Australian Astron Opt, 105 Delhi Rd, N Ryde, NSW 2113, Australia

[7] Univ Sussex, Astron Ctr, Brighton BN1 9QH, England

[8] Univ Bristol, HH Wills Phys Lab, Tyndall Ave, Bristol BS8 1TL, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2023年 / 523卷 / 02期

基金：

澳大利亚研究理事会;

关键词：

galaxies: groups: general; galaxies: haloes; radio lines: general; STAR-FORMING GALAXIES; DIGITAL SKY SURVEY; FAST ALPHA SURVEY; ATOMIC-HYDROGEN; MOLECULAR-HYDROGEN; GAS CONTENT; ILLUSTRISTNG SIMULATIONS; NEUTRAL HYDROGEN; TARGET SELECTION; DATA STACKING;

D O I：

10.1093/mnras/stad1575

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We determine the atomic hydrogen (H I) to halo mass relation (HIHM) using Arecibo Legacy Fast ALFA survey H I data at the location of optically selected groups from the Galaxy And Mass Assembly (GAMA) survey. We make direct H I detections for 37 GAMA groups. Using H I group spectral stacking of 345 groups, we study the group H I content as a function of halo mass across a halo mass range of 10(11)-10(14.7) M-circle dot. We also correct our results for Eddington bias. We find that the group H I mass generally rises as a function of halo mass from 1.3% of the halo mass at 10(11.6) M-circle dot to 0.4% at 10(13.7) M-circle dot with some indication of flattening towards the high-mass end. Despite the differences in optical survey limits, group catalogues, and halo mass estimation methods, our results are consistent with previous group H I-stacking studies. Our results are also consistent with mock observations from SHARK and IllustrisTNG.

引用

页码：2693 / 2709

页数：17

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