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SDSS-IV MaStar -- A Large and Comprehensive Empirical Stellar Spectral Library: First Release | | Renbin Yan
; Yanping Chen
; Daniel Lazarz
; Dmitry Bizyaev
; Claudia Maraston
; Guy S. Stringfellow
; Kyle McCarthy
; Sofia Meneses-Goytia
; David R. Law
; Daniel Thomas
; Jesus Falcon Barroso
; José R. Sánchez-Gallego
; Edward Schlafly
; Zheng Zheng
; Maria Argudo-Fernández
; Rachael L. Beaton
; Timothy C. Beers
; Matthew Bershady
; Michael R. Blanton
; Joel Brownstein
; Kevin Bundy
; Kenneth C. Chambers
; Brian Cherinka
; Nathan De Lee
; Niv Drory
; Lluís Galbany
; Jon Holtzman
; Julie Imig
; Nick Kaiser
; Karen Kinemuchi
; Chao Liu
; A-Li Luo
; Eugene Magnier
; Steven Majewski
; Preethi Nair
; Audrey Oravetz
; Daniel Oravetz
; Kaike Pan
; Jennifer Sobeck
; Keivan Stassun
; Michael Talbot
; Christy Tremonti
; Christopher Waters
; Anne-Marie Weijmans
; Ronald Wilhelm
; Gail Zasowski
; Gang Zhao
; Yong-Heng Zhao
; | | Date: |
6 Dec 2018 | | Abstract: | We present the first release of the MaNGA Stellar Library (MaStar), which is
a large, well-calibrated, high-quality empirical library covering the
wavelength range of 3,622-10,354A at a resolving power of R~1800. The spectra
were obtained using the same instrument as used by the Mapping Nearby Galaxies
at Apache Point Observatory (MaNGA) project, by piggybacking on the
SDSS-IV/APOGEE-2N observations. Compared to previous empirical libraries, the
MaStar library will have a higher number of stars and a more comprehensive
stellar-parameter coverage, especially of cool dwarfs, low-metallicity stars,
and stars with different [alpha/Fe], achieved by a sophisticated target
selection strategy that takes advantage of stellar-parameter catalogs from the
literature. This empirical library will provide a new basis for stellar
population synthesis, and is particularly well-suited for stellar-population
analysis of MaNGA galaxies. The first version of the library contains 8646
high-quality per-visit spectra for 3321 unique stars. Compared to photometry,
the relative flux calibration of the library is accurate to 3.9% in g-r, 2.7%
in r-i, and 2.2% in i-z. The data are released as part of Sloan Digital Sky
Survey Data Release 15. We expect the final release of the library to contain
more than 10,000 stars. | | Source: | arXiv, 1812.2745 | | Services: | Forum | Review | PDF | Favorites | |
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