The morphology, kinematics and metallicity of blue-core galaxies
The morphology, kinematics and metallicity of blue-core galaxies
复制标题
蓝核星系的形态、运动学和金属丰度
DOI:
10.1088/1674-4527/19/6/81
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发表时间:
2019-06
影响因子:
1.8
通讯作者:
Yu Xiao Ling
中科院分区:
文献类型:
--
作者:
Chen Yong Yun;Chen Yan Mei;Gu Qiu Sheng;Shi Yong;Bing Long Ji;Yu Xiao Ling
We select 107 blue-core galaxies from the MaNGA survey, studying their morphology, kinematics as well as the gas-phase metallicity. Our results are as follows: (i) In our sample, 26% of blue-core galaxies have decoupled gas-star kinematics, indicating external gas accretion; 15% have bar-like structure and 8% show post-merger features, such as tidal tails and irregular gas/star velocity field. All these processes/features, such as accreting external misaligned gas, interaction and bar, can trigger gas inflow. Thus the central star-forming activities lead to bluer colors in their centers (blue-core galaxies). (ii) By comparing with the SDSS DR7 star-forming galaxy sample, we find that the blue-core galaxies have higher central gas-phase metallicity than what is predicted by the local mass-metallicity relation. We explore the origin of the higher metallicity, finding that not only the blue-core galaxies, but also the flat-gradient and red-core galaxies all have higher metallicity. This can be explained by the combined effect of redshift and galaxy color.
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影响因子:
4.8
作者:
Yifei Jin;Yan-Mei Chen;Yong Shi;C. Tremonti;M. Bershady;M. Merrifield;E. Emsellem;E. Emsellem
通讯作者:
Yifei Jin;Yan-Mei Chen;Yong Shi;C. Tremonti;M. Bershady;M. Merrifield;E. Emsellem;E. Emsellem
影响因子:
4.8
作者:
Alejandro Ben'itez-Llambay;J. Navarro;M. Abadi;S. Gottloeber;G. Yepes;Y. Hoffman;M. Steinmetz
通讯作者:
Alejandro Ben'itez-Llambay;J. Navarro;M. Abadi;S. Gottloeber;G. Yepes;Y. Hoffman;M. Steinmetz
影响因子:
4.9
作者:
Dalcanton, Julianne J.
通讯作者:
Dalcanton, Julianne J.
DOI:
10.1088/2041-8205/764/1/l1
发表时间:
2012-12
期刊:
The Astrophysical Journal Letters
影响因子:
--
作者:
F. Muller-S'anchez;M. Prieto;M. Mezcua;R. Davies;M. Malkan;M. I. D. A. D. Canarias-M.-I.-D.-A.-D.-Canarias-102993718;U. L. Laguna
通讯作者:
F. Muller-S'anchez;M. Prieto;M. Mezcua;R. Davies;M. Malkan;M. I. D. A. D. Canarias-M.-I.-D.-A.-D.-Canarias-102993718;U. L. Laguna
影响因子:
4.9
作者:
Bundy, Kevin;Bershady, Matthew A.;Zhang, Kai
通讯作者:
Zhang, Kai