THE EVOLUTION of POST-STARBURST GALAXIES from z ∼ 1 to the PRESENT
Astrophysical Journal, ISSN: 1538-4357, Vol: 833, Issue: 1
2016
- 19Citations
- 28Captures
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Article Description
Post-starburst galaxies are in the transitional stage between blue, star-forming galaxies and red, quiescent galaxies and therefore hold important clues for our understanding of galaxy evolution. In this paper, we systematically searched for and identified a large sample of post-starburst galaxies from the spectroscopic data set of the Sloan Digital Sky Survey (SDSS) Data Release 9. In total, we found more than 6000 objects with redshifts between z ∼ 0.05 and z ∼ 1.3, making this the largest sample of post-starburst galaxies in the literature. We calculated the luminosity function of the post-starburst galaxies using two uniformly selected subsamples: the SDSS main galaxy sample and the Baryon Oscillation Spectroscopic Survey CMASS sample. The luminosity functions are reasonably fit by half-Gaussian functions. The peak magnitudes shift as a function of redshift from M ∼ -23.5 at z ∼ 0.8 to M ∼ -20.3 at z ∼ 0.1. This is consistent with the downsizing trend, whereby more massive galaxies form earlier than low-mass galaxies. We compared the mass of the post-starburst stellar population found in our sample to the decline of the global star formation rate and found that only a small amount (∼1%) of all star formation quenching in the redshift range z = 0.2-0.7 results in post-starburst galaxies in the luminosity range our sample is sensitive to. Therefore, luminous post-starburst galaxies are not the place where most of the decline in the star formation rate of the universe is happening.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85006339853&origin=inward; http://dx.doi.org/10.3847/0004-637x/833/1/19; https://iopscience.iop.org/article/10.3847/0004-637X/833/1/19; http://stacks.iop.org/0004-637X/833/i=1/a=19?key=crossref.5bc1eca1cdf887f5b99c0f551872c341; http://stacks.iop.org/0004-637X/833/i=1/a=19/pdf; https://dx.doi.org/10.3847/0004-637x/833/1/19; https://validate.perfdrive.com/9730847aceed30627ebd520e46ee70b2/?ssa=4bbce27c-84a8-4b4a-a1fd-37a87c7a2a33&ssb=03019299859&ssc=https%3A%2F%2Fiopscience.iop.org%2Farticle%2F10.3847%2F0004-637X%2F833%2F1%2F19&ssi=0d0bda2f-cnvj-483e-8708-e847b694b431&ssk=botmanager_support@radware.com&ssm=070341589869853927708818698152756058&ssn=6db79c54b1347f0e2d18c501265583bf3b180900c3c4-8990-4f21-a38ed7&sso=2b585f8c-bc564dd29dea26d26e24aadd9df840de383dcec046670d68&ssp=02300295721726551772172703679579094&ssq=36530058149108683153929239671705511803610&ssr=NTIuMy4yMTcuMjU0&sst=com.plumanalytics&ssu=&ssv=&ssw=&ssx=eyJ1em14IjoiN2Y5MDAwMGMxZDc2YmItMzk2MS00N2VjLTlkZGItNjdmYTVhZTY2ODdlOC0xNzI2NTI5MjM5NDUzNTUyMjUxNzc5LTM4OGU5OGY0MTQ5ZDBkOTI3NzA2MjkiLCJyZCI6ImlvcC5vcmciLCJfX3V6bWYiOiI3ZjYwMDBkNzYzNGE3Ni05ZTRkLTRjMmMtYjJhMC1mYzAzNGMyZjE1MjkxNzI2NTI5MjM5NDUzNTUyMjUxNzc5LTFiOWZlZTdjZmQwOTk2Zjg3NzA3MTMifQ==
American Astronomical Society
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