亮红外星系中的活动星系核

主讲人 (Speaker): 黄家声

主讲人单位 (Speaker's Institute): 中国智利天文中心

邀请人 (Invited by): 汤柏添

时间 (Time): 星期一, 2018/01/15 - 15:00 to 16:00

地点 (Location): 珠海校区海滨红楼17栋107会议室

摘要 (Abstract):

This talk is in two parts. The first part discusses 24-micron selected galaxies at z ~ 2, which are very bright in the rest-frame 8 micron PAH feature. These objects tend to be extremely luminous with luminosities in the ULIRG category. For this sample, we will discuss their relation to the star-forming main sequence, contribution to the total star-forming density at that redshift, and their 2-point correlation function.

The second part of the talk is a discussion of 16-micron selected galaxies at z ~ 1, which again keys on the rest-frame 8-micron PAH feature. These objects have luminosities in the LIRG class and have somewhat smaller masses than the z ~ 2 sample. The majority of these objects are normal PAH-dominated star-forming galaxies but a few have enhanced hot-dust continua associated with AGN activity. SED discriminants are in process to separate the various populations.

主讲人简介 (Speaker's CV):

黄家声研究员现任中国智利天文中心首席研究员，主要研究方向是星系形成与演化，高红移宇宙。