The HI gas and star formation in star-forming galaxies selected from ALFALFA
The HI gas and star formation in star-forming galaxies selected from ALFALFA
复制标题
选自 ALFALFA 的恒星形成星系中的 HI 气体和恒星形成
DOI:
10.1088/1674-4527/21/5/123
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发表时间:
2021-06
影响因子:
1.8
通讯作者:
Zhou Zhimin
中科院分区:
文献类型:
--
作者:
Lei Fengjie;Wu Hong;Zhu Yinan;Lam Man I;Zhou Zhimin
This paper presents the results of Hα imaging of 169 galaxies randomly selected from the α.40 - SDSS catalog.The sample has excluded all low surface brightness galaxies(LSBGs)whose central surface brightness in B band(µ_0(B))fainter than 22.5 mag arcsec~(-2).It can be used as the counterparts sample to LSBGs.We observed their Hα and R band images by using the 2.16 m telescope at the Xinglong Observatory of the National Astronomical Observatories,Chinese Academy of Sciences(NAOC).The main goal of this work is to present the properties of those galaxies,together with Hα flux and star formation-,gas-,stellar mass- surface density.In addition,we confirm the correlations among HI content,stellar mass and star formation in ALFALFA galaxies.The HI mass increases with stellar mass,and the slope slows down at the higher stellar mass.The overall trend was that the specific star formation rate(sSFR)decreases with stellar mass,and the sSFR dropped sharply when the stellar mass is close to 10~(10.3)~ 10~(10.5)M_⊙.The weak correlation between SFR/M_(HI)and M_(HI)implies the HI contribute little to star formation.Our sample,which are mostly star-forming galaxies,follows the revisited Kennicutt-Schmidt law as well as the Kennicutt-Schmidt law.
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DOI:
10.1111/j.1365-2966.2011.19869.x
发表时间:
2011-10
影响因子:
4.8
作者:
O. Spector;I. Finkelman;N. Brosch
通讯作者:
O. Spector;I. Finkelman;N. Brosch
影响因子:
64.8
作者:
Shi, Yong;Armus, Lee;Gu, Qiusheng
通讯作者:
Gu, Qiusheng
影响因子:
4.9
作者:
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通讯作者:
Junzhi Wang
DOI:
--
发表时间:
--
期刊:
--
影响因子:
--
作者:
通讯作者:
--
影响因子:
4.8
作者:
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通讯作者:
O. I. Wong;G. Meurer;Z. Zheng;T. Heckman;D. Thilker;M. Zwaan