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Ongoing star formation in AGN host galaxy discs: a view from core-collapse supernovae
Wang, J.; Deng, J. S.; Wei, J. Y.
2010-07-11
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号405期号:4页码:2529-2533
摘要The normalized radial distribution of young stellar populations (and cold gas) in nearby galactic discs is compared between active galactic nuclei (AGN) host galaxies and star-forming galaxies (both with Hubble types between S0/a and Scd) by using Type II supernovae (SNe II) as tracers. A subset of 140 SNe II with available SN position measurements is selected from the Sternberg Astronomical Institute (SAI)-Sloan Digital Sky Survey (SDSS) image catalogue by requiring available SDSS spectroscopy data of their host galaxies. Our sample is finally composed of 46 AGN and 94 star-forming galaxies. Both directly measured number distributions and inferred surface density distributions indicate that (a) the SNe detected in star-forming galaxies follow an exponential law well; (b) in contrast, the SNe detected in AGN host galaxies significantly deviate from an exponential law, which is independent of both morphological type and redshift. Specifically, we find a detection deficit around R(SN)/R(25,cor) similar to 0.5 and an overdetection at outer region R(SN)/R(25,cor) similar to 0.6-0.8. This finding provides a piece of evidence supporting that there is a link between ongoing star formation (and cold gas reservoir) taking place in the extended disc and central AGN activity.
关键词Galaxies: Active Galaxies: Seyfert Supernovae: General
DOI10.1111/j.1365-2966.2010.16629.x
收录类别SCI
语种英语
WOS记录号WOS:000279450900033
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文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/7684
专题空间科学研究部
作者单位Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
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Wang, J.,Deng, J. S.,Wei, J. Y.. Ongoing star formation in AGN host galaxy discs: a view from core-collapse supernovae[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2010,405(4):2529-2533.
APA Wang, J.,Deng, J. S.,&Wei, J. Y..(2010).Ongoing star formation in AGN host galaxy discs: a view from core-collapse supernovae.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,405(4),2529-2533.
MLA Wang, J.,et al."Ongoing star formation in AGN host galaxy discs: a view from core-collapse supernovae".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 405.4(2010):2529-2533.
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