FROM STARBURST TO QUIESCENCE: TESTING ACTIVE GALACTIC NUCLEUS FEEDBACK IN RAPIDLY QUENCHING POST-STARBURST GALAXIES

Post-star-bursts are galaxies in transition from the blue cloud to the red sequence. This work uses Sloan Digital Sky Survey, the Galaxy Evolution Explorer, and Wide-field Infrared Survey Explorer observations to identify the evolutionary sequence from star-bursts to fully quenched post-star-bursts...

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Bibliographic Details
Published in:The Astrophysical journal 2014-09, Vol.792 (2), p.1-22
Main Authors: YESUF, HASSEN M, Faber, S M, Trump, Jonathan R, Koo, David C, Fang, Jerome J, Liu, F S, Wild, Vivienne, Hayward, Christopher C
Format: Article
Language:English
Subjects:
Active galactic nuclei
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
COMPARATIVE EVALUATIONS
Delay
DUSTS
EVOLUTION
GALAXIES
GALAXY NUCLEI
Infrared
INFRARED SURVEYS
MASS
QUENCHING
Quenching (cooling)
Star formation
STARS
SYNTHESIS
Time delay
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Summary:Post-star-bursts are galaxies in transition from the blue cloud to the red sequence. This work uses Sloan Digital Sky Survey, the Galaxy Evolution Explorer, and Wide-field Infrared Survey Explorer observations to identify the evolutionary sequence from star-bursts to fully quenched post-star-bursts (QPSBs) in the narrow mass range logM (M) = 10.3-10.7, and identifies "transiting" post-star-bursts (TPSBs) which are intermediate between these two populations. The active galactic nucleus (AGN) fraction, as estimated from optical line ratios, of these post-star-bursts is about three times higher than that of normal star forming galaxies of the same mass, but there is a significant delay between the star-burst phase and the peak of nuclear optical AGN activity, in agreement with previous studies. The time delay between the star-burst phase and AGN activity suggests that AGNs do not play a primary role in the original quenching of star-bursts but may be responsible for quenching later low-level star formation by removing gas and dust during the post-star-burst phase.
ISSN:1538-4357
0004-637X
1538-4357
DOI:10.1088/0004-637X/792/2/84