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SDSS-IV MANGA: Spatially Resolved Star Formation Main Sequence and LI(N)ER Sequence
B. C. Hsieh, Lihwai Lin, J. H. Lin +17
We present our study on the spatially resolved H_alpha and M_star relation for 536 star-forming and 424 quiescent galaxies taken from the MaNGA survey. We show that the star format…
SDSS-IV MaNGA: Constraints on the Conditions for Star Formation in Galaxy Discs
David V. Stark, Kevin A. Bundy, Matthew E. Orr +12
Regions of disc galaxies with widespread star formation tend to be both gravitationally unstable and self-shielded against ionizing radiation, whereas extended outer discs with lit…
SDSS-IV MaNGA: Star formation cessation in low-redshift galaxies I. Dependence on stellar mass and structural properties
Enci Wang, Cheng Li, Ting Xiao +8
We investigate radial gradients in the recent star formation history (SFH) using 1917 galaxies with and integral-field spectroscopy from the ongoing MaNGA survey. For…
SDSS IV MaNGA - sSFR profiles and the slow quenching of discs in green valley galaxies
Francesco Belfiore, Roberto Maiolino, Kevin Bundy +11
We study radial profiles in H equivalent width and specific star formation rate (sSFR) derived from spatially-resolved SDSS-IV MaNGA spectroscopy to gain insight on the physical…
Low Metallicities and Old Ages for Three Ultra-Diffuse Galaxies in the Coma Cluster
Meng Gu, Charlie Conroy, David Law +17
A large population of ultra-diffuse galaxies (UDGs) was recently discovered in the Coma cluster. Here we present optical spectra of three such UDGs, DF7, DF44 and DF17, which have…
Inside-out growth or inside-out quenching? clues from colour gradients of local galaxies
Jianhui Lian, Renbin Yan, Michael Blanton +1
We constrain the spatial gradient of star formation history within galaxies using the colour gradients in NUV-u and u-i for a local spatially-resolved galaxy sample. By splitting e…