2019ApJ...883...82P

Query : 2019ApJ...883...82P

2019ApJ...883...82P - Astrophys. J., 883, 82-82 (2019/September-3)

Resolved and integrated stellar masses in the SDSS-IV/MaNGA survey. I. PCA spectral fitting and stellar mass-to-light ratio estimates.

PACE Z.J., TREMONTI C., CHEN Y., SCHAEFER A.L., BERSHADY M.A., WESTFALL K.B., BOQUIEN M., ROWLANDS K., ANDREWS B., BROWNSTEIN J.R., DRORY N. and WAKE D.

Abstract (from CDS):

We present a method of fitting optical spectra of galaxies using a basis set of six vectors obtained from principal-component analysis of a library of synthetic spectra of 40,000 star formation histories (SFHs). Using this library, we provide estimates of the resolved effective stellar mass-to-light ratio (Υ* ) for thousands of galaxies from the SDSS-IV/MaNGA integral-field spectroscopic survey. Using a testing framework built on additional synthetic SFHs, we show that the estimates of logΥi* are reliable (as are their uncertainties) at a variety of signal-to-noise ratios, stellar metallicities, and dust attenuation conditions. Finally, we describe the future release of the resolved stellar mass-to-light ratios as an SDSS-IV/MaNGA Value-Added Catalog and provide a link to the software used to conduct this analysis. (The software can be found at https://github.com/zpace/pcay.)

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: fundamental parameters - methods: data analysis

CDS comments: Figure 31: ManGA 8114-3704 is a misprint for 8144-3704.

Simbad objects: 8

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Number of rows : 8
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 LEDA 1813178 G 07 40 39.181 +27 36 40.24           ~ 13 0
2 MCG+07-16-014 LSB 07 44 38.7438929880 +40 21 58.944211344   16.0       ~ 45 1
3 LEDA 1645665 G 07 50 40.2880368096 +21 13 56.077881888           ~ 12 0
4 SDSS J075430.17+265455.0 EmG 07 54 30.17730 +26 54 55.0683           ~ 13 0
5 Z 241-79 GiG 11 06 49.1646012456 +45 57 52.656722424   14.6       ~ 32 0
6 Z 242-55 G 11 35 43.1145744576 +49 44 16.207436904   15.5       ~ 22 0
7 LEDA 2305988 G 14 15 15.1420760760 +47 52 24.046710492           ~ 20 0
8 LEDA 3088540 G 14 55 07.2587088096 +34 50 36.006413244           ~ 13 0

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