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SDSS-IV MaNGA: environmental dependence of stellar age and metallicity gradients in nearby galaxies
Zheng Zheng, Huiyuan Wang, Junqiang Ge +20
We present a study on the stellar age and metallicity distributions for 1105 galaxies using the STARLIGHT software on MaNGA integral field spectra. We derive age and metallicity gr…
A New Diagnostic Diagram of Ionization Source for High Redshift Emission Line Galaxies
Kai Zhang, Lei Hao
We propose a new diagram, the Kinematic-Excitation diagram (KEx diagram), which uses the [OIII]/Hβ line ratio and the [OIII]5007 emission line width (σ_{[OIII]}) to diagnose the io…
SDSS-IV MaNGA: A serendipitous observation of a potential gas accretion event
Edmond Cheung, David V. Stark, Song Huang +24
The nature of warm, ionized gas outside of galaxies may illuminate several key galaxy evolutionary processes. A serendipitous observation by the MaNGA survey has revealed a large,…
The quenching time scale and quenching rate of galaxies
Jianhui Lian, Renbin Yan, Kai Zhang +1
The average star formation rate (SFR) in galaxies has been declining since redshift of 2. A fraction of galaxies quench and become quiescent. We constrain two key properties of the…
The Data Reduction Pipeline for the SDSS-IV MaNGA IFU Galaxy Survey
David R. Law, Brian Cherinka, Renbin Yan +26
Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) is an optical fiber-bundle integral-field unit (IFU) spectroscopic survey that is one of three core programs in the four…
Suppressing star formation in quiescent galaxies with supermassive black hole winds
Edmond Cheung, Kevin Bundy, Michele Cappellari +22
Quiescent galaxies with little or no ongoing star formation dominate the galaxy population above , where their numbers have increased by a fac…