CHILES VI: HI and Hα observations for z < 0.1 galaxies; probing HI spin alignment with filaments in the cosmic web

被引：30

作者：

Bird, J. Blue ^{[1
]}

Davis, J. ^{[2
]}

Luber, N. ^{[3
,4
]}

van Gorkom, J. H. ^{[1
]}

Wilcots, E. ^{[2
]}

Pisano, D. J. ^{[3
,4
,5
]}

Gim, H. B. ^{[6
,7
]}

Momjian, E. ^{[8
]}

Fernandez, X. ^{[9
]}

Hess, K. M. ^{[10
,11
]}

Lucero, D. ^{[12
]}

Dodson, R. ^{[13
]}

Vinsen, K. ^{[13
]}

Popping, A. ^{[13
,14
]}

Chung, A. ^{[15
]}

Kreckel, K. ^{[16
]}

van der Hulst, J. M. ^{[11
]}

Yun, M. ^{[6
]}

机构：

[1] Columbia Univ, Dept Astron, 550 West 120th, New York, NY 10027 USA

[2] Univ Wisconsin, Dept Astron, 475 N Charter Str, Madison, WI 53706 USA

[3] West Virginia Univ, Dept Phys & Astron, POB 6315, Morgantown, WV 26506 USA

[4] West Virginia Univ, Ctr Gravitat Waves & Cosmol, Chestnut Ridge Res Bldg, Morgantown, WV 26505 USA

[5] Green Bark Observ, Green Bank, WV 24944 USA

[6] Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA

[7] Arizona State Univ, Sch Earth & Space Explorat, 781 Terrace Mall, Tempe, AZ 85287 USA

[8] Natl Radio Astron Observ, POB 0, Socorro, NM 87801 USA

[9] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[10] Netherlands Inst Radio Astron, ASTRON, Postbus 2, NL-7900 AA Dwingeloo, Netherlands

[11] Univ Groningen, Kapteyn Astron Inst, Landleven 12, NL-9747 AD Groningen, Netherlands

[12] Virginia Tech, Dept Phys, 850 West Campus Dr, Blacksburg, VA 24061 USA

[13] Univ Western Australia, Int Ctr Radio Astron Res, Crawley, WA 6009, Australia

[14] Australian Res Council, Ctr Excellence All Sky Astrophys CAASTRO, Canberra, ACT, Australia

[15] Yonsei Univ, Dept Astron, 50 Yonsei Ro, Seoul 03722, South Korea

[16] Max Planck Inst Astron, Knigstuhl 17, D-69117 Heidelberg, Germany

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2020年 / 492卷 / 01期

基金：

欧洲研究理事会; 美国国家科学基金会;

关键词：

galaxy: evolution; galaxy: formation; galaxy: kinematics and dynamics; large-scale structure of the Universe; TELESCOPE ADVANCED CAMERA; URSA-MAJOR CLUSTER; SKY SURVEY; ANGULAR-MOMENTUM; SPIRAL GALAXIES; SOURCE-FINDER; EVOLUTION; EMISSION; IV; I;

D O I：

10.1093/mnras/stz3357

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present neutral hydrogen (HI) and ionized hydrogen (H alpha) observations of 10 galaxies out to a redshift of 0.1. The HI observations are from the first epoch (178 h) of the COSMOS HI Large Extragalactic Survey (CHILES). Our sample is HI biased and consists of 10 late-type galaxies with HI masses that range from 1.8x10(7) M-circle dot to 1.1x10(10) M-circle dot. We find that although the majority of galaxies show irregularities in the morphology and kinematics, they generally follow the scaling relations found in larger samples. We find that the HI and H alpha velocities reach the flat part of the rotation curve. We identify the large-scale structure in the nearby CHILES volume using DisPerSE with the spectroscopic catalogue from SDSS. We explore the gaseous properties of the galaxies as a function of location in the cosmic web. We also compare the angular momentum vector (spin) of the galaxies to the orientation of the nearest cosmic web filament. Our results show that galaxy spins tend to be aligned with cosmic web filaments and show a hint of a transition mass associated with the spin angle alignment.

引用

页码：153 / 176

页数：24

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