English  |  正體中文  |  简体中文  |  Items with full text/Total items : 63998/96745 (66%)
Visitors : 3651274      Online Users : 193
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/122464


    Title: An IFU View of the Active Galactic Nuclei in MaNGA Galaxy Pairs
    Authors: Jin, Gaoxiang;Dai, Y. Sophia;Pan, Hsi-An;Lin, Lihwai;Li, Cheng;Hsieh, Bau-Ching;Shen, Shiyin;Yuan, Fang-Ting;Feng, Shuai;Cheng, Cheng;Xu, Hai;Huang, Jia-Sheng;Zhang, Kai
    Date: 2021-12-07
    Issue Date: 2022-03-10 12:11:02 (UTC+8)
    Abstract: The role of active galactic nuclei (AGNs) during galaxy interactions and how they influence the star formation in the system are still under debate. We use a sample of 1156 galaxies in galaxy pairs or mergers (hereafter "pairs") from the MaNGA survey. This pair sample is selected by the velocity offset, projected separation, and morphology, and is further classified into four cases along the merger sequence based on morphological signatures. We then identify a total of 61 (5.5%) AGNs in pairs based on the emission-line diagnostics. No evolution of the AGN fraction is found, either along the merger sequence or compared to isolated galaxies (5.0%). We observe a higher fraction of passive galaxies in galaxy pairs, especially in the pre-merging cases, and associate the higher fraction to their environmental dependence. The isolated AGN and AGNs in pairs show similar distributions in their global stellar mass, star-formation rate (SFR), and central [O iii] surface brightness. AGNs in pairs show radial profiles of increasing specific SFR and declining Dn4000 from center to outskirts, and no significant difference from the isolated AGNs. This is clearly different from star-forming galaxies (SFGs) in our pair sample, which show enhanced central star formation, as reported before. AGNs in pairs have lower Balmer decrements at outer regions, possibly indicating less dust attenuation. Our findings suggest that AGNs are likely follow an inside-out quenching and the merger impact on the star formation in AGNs is less prominent than in SFGs.
    Relation: The Astrophysical Journal 923(1), 6 (20 pages)
    DOI: 10.3847/1538-4357/ac2901
    Appears in Collections:[物理學系暨研究所] 期刊論文

    Files in This Item:

    File Description SizeFormat
    An IFU View of the Active Galactic Nuclei in MaNGA Galaxy Pairs.pdf11330KbAdobe PDF2View/Open
    index.html0KbHTML86View/Open

    All items in 機構典藏 are protected by copyright, with all rights reserved.


    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - Feedback