Connection among environment, cloud–cloud collision speed, and star formation activity in the strongly barred galaxy NGC 1300

Connection among environment, cloud–cloud collision speed, and star formation activity in the strongly barred galaxy NGC 1300
复制标题

强棒星系 NGC 1300 中环境、云与云碰撞速度和恒星形成活动之间的联系

DOI:
10.1093/mnras/stab130
复制
发表时间:
2021
期刊:
The Astrophysical Journal
影响因子:
--
通讯作者:
A. Habe
A. Habe
中科院分区:
--
文献类型:
--
作者:
F. Maeda;K. Ohta;Y. Fujimoto;A. Habe

文献摘要

参考文献

被引文献

相似文献

云-云碰撞(CCC)被认为是诱导大质量恒星形成的一种机制。最近的模拟表明,在银河系规模的环境中,CCC的速度是不同的,这是观测到的恒星形成活动差异的原因。特别是,高速的CCC被认为是条状螺旋星系棒区恒星形成受到抑制的原因之一。以强屏蔽星系NGC1300为研究对象,研究了该星系的CCC速度。我们发现杆部和杆端的CCC速度有高于臂部的趋势。预计中国男子单杠20公里S−1,∼16公里S−1,∼11公里S−1。虽然棒区和棒端的恒星形成活动不同,但具有>20 km S−1的高速CCC数密度和速度在两个区域都很高,这意味着控制恒星形成的其他参数的存在。巨型分子云(GMC)的分子气体质量(平均密度)在杆状(低质量、低密度)和杆端(高质量、高密度)之间的差异可能是恒星形成活动不同的原因。结合我们以前的研究(前田等人),NGC1300中棒中恒星形成抑制的主要原因是大量弥散分子气体的存在和低质量GMC之间的高速CCCS。
Cloud–cloud collision (CCC) has been suggested as a mechanism to induce massive star formation. Recent simulations suggest that a CCC speed is different among galactic-scale environments, which is responsible for observed differences in star formation activity. In particular, a high-speed CCC is proposed as a cause of star formation suppression in the bar regions in barred spiral galaxies. Focusing on the strongly barred galaxy NGC 1300, we investigate the CCC speed. We find the CCC speed in the bar and bar-end tend to be higher than that in the arm. The estimated CCC speed is ∼ 20 km s−1, ∼ 16 km s−1, and ∼ 11 km s−1 in the bar, bar-end, and arm, respectively. Although the star formation activity is different in the bar and bar-end, the CCC speed and the number density of high-speed CCC with > 20 km s−1 are high in both regions, implying the existence of other parameters that control the star formation. The difference in molecular gas mass (average density) of the giant molecular clouds (GMCs) between the bar (lower mass and lower density) and bar-end (higher mass and higher density) may be cause for the different star formation activity. Combining with our previous study (Maeda et al.), the leading candidates of causes for the star formation suppression in the bar in NGC 1300 are the presence of a large amount of diffuse molecular gases and high-speed CCCs between low mass GMCs.
DOI: 10.1093/mnras/stx2990
发表时间: 2017-11
影响因子: 4.8
作者:
Philip A. James;S. Percival
通讯作者: Philip A. James;S. Percival
PdBI 弧秒漩涡调查 (PAWS):M51 中巨分子云特性的环境依赖性
DOI: 10.1088/0004-637x/784/1/3
发表时间: 2014
期刊: The Astrophysical Journal
影响因子: --
作者:
Colombo;Hughes;Schinnerer
通讯作者: Schinnerer
DOI: 10.3847/1538-4357/ab0d1e
发表时间: 2019-03
期刊: The Astrophysical Journal
影响因子: --
作者:
Molly K. Finn;Kelsey E. Johnson;C. Brogan;C. Wilson;R. Indebetouw;W. Harris;J. Kamenetzky;A. Bemis
通讯作者: Molly K. Finn;Kelsey E. Johnson;C. Brogan;C. Wilson;R. Indebetouw;W. Harris;J. Kamenetzky;A. Bemis
DOI: 10.1093/mnras/stz3525
发表时间: 2019-11
影响因子: 4.8
作者:
M. Chevance;D. Kruijssen;A. Hygate;A. Schruba;S. Longmore;B. Groves;J. Henshaw;C. Herrera;A. H
通讯作者: M. Chevance;D. Kruijssen;A. Hygate;A. Schruba;S. Longmore;B. Groves;J. Henshaw;C. Herrera;A. H
DOI: 10.3847/1538-4357/ab9953
发表时间: 2020-05
期刊: The Astrophysical Journal
影响因子: --
作者:
P. Lang;S. Meidt;E. Rosolowsky;Joseph Nofech;E. Schinnerer;A. Leroy;E. Emsellem;E. Emsellem;I. Pessa;S. Glover;B. Groves;A. Hughes;J. Kruijssen;M. Querejeta;A. Schruba;F. Bigiel;G. Blanc;G. Blanc;M. Chevance;D. Colombo;C. Faesi;J. Henshaw;C. Herrera;Daizhong Liu;J. Pety;J. Puschnig;T. Saito;Jiayi Sun;A. Usero
通讯作者: P. Lang;S. Meidt;E. Rosolowsky;Joseph Nofech;E. Schinnerer;A. Leroy;E. Emsellem;E. Emsellem;I. Pessa;S. Glover;B. Groves;A. Hughes;J. Kruijssen;M. Querejeta;A. Schruba;F. Bigiel;G. Blanc;G. Blanc;M. Chevance;D. Colombo;C. Faesi;J. Henshaw;C. Herrera;Daizhong Liu;J. Pety;J. Puschnig;T. Saito;Jiayi Sun;A. Usero