Star formation and gas accretion in nearby galaxies

被引：15
|
作者：
Yim, Kijeong [1 ,2 ]
van der Hulst, J. M. [1 ]
机构：
[1] Univ Groningen, Kapteyn Astron Inst, POB 800, NL-9700 AV Groningen, Netherlands
[2] Korea Astron & Space Sci Inst, 776 Daedeok Daero, Daejeon 34055, South Korea
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2016年 / 463卷 / 02期
基金：
欧洲研究理事会;
关键词：
stars: formation; galaxies: ISM; galaxies: kinematics and dynamics; WESTERBORK HI SURVEY; EXTENDED ULTRAVIOLET DISK; LOPSIDED SPIRAL GALAXIES; IRREGULAR GALAXIES; MOLECULAR GAS; FORMATION EFFICIENCY; FORMATION LAW; CARMA SURVEY; STABILITY; EVOLUTION;
D O I：
10.1093/mnras/stw2118
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In order to quantify the relationship between gas accretion and star formation, we analyse a sample of 29 nearby galaxies from the WHISP survey which contains galaxies with and without evidence for recent gas accretion. We compare combined radial profiles of far-UV (GALEX) and IR 24 mu m (Spitzer) characterizing distributions of recent star formation with radial profiles of CO (IRAM, BIMA, or CARMA) and HI (WSRT) tracing molecular and atomic gas contents to examine star formation efficiencies in symmetric (quiescent), asymmetric (accreting), and interacting (tidally disturbed) galaxies. In addition, we investigate the relationship between star formation rate and HI in the outer discs for the three groups of galaxies. We confirm the general relationship between gas surface density and star formation surface density, but do not find a significant difference between the three groups of galaxies.
引用
收藏
页码：2092 / 2108
页数：17
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