The GALEX Arecibo SDSS Survey. VI. Second data release and updated gas fraction scaling relations

B. Catinella, David Schiminovich, Guinevere Kauffmann, S. Fabello, C. Hummels, J. Lemonias, S. M. Moran, R. Wu, A. Cooper, J. Wang

Research output: Contribution to journalArticlepeer-review

75 Citations (Scopus)
152 Downloads (Pure)

Abstract

We present the second data release from the GALEX Arecibo SDSS Survey (GASS), an ongoing large Arecibo program to measure the Hi properties for an unbiased sample of ~1000 galaxies with stellar masses greater than 1010 M⊙ and redshifts 0.025 <z < 0.05. GASS targets are selected from the Sloan Digital Sky Survey (SDSS) spectroscopic and Galaxy Evolution Explorer (GALEX) imaging surveys, and are observed until detected or until a gas mass fraction limit of a few per cent is reached. This second data installment includes new Arecibo observations of 240 galaxies, and marks the 50% of the complete survey. We present catalogs of the Hi, optical and ultraviolet parameters for these galaxies, and their Hi-line profiles. Having more than doubled the size of the sample since the first data release, we also revisit the main scaling relations of the Hi mass fraction with galaxy stellar mass, stellar mass surface density, concentration index, and NUV - r color, as well as the gas fraction plane introduced in our earlier work.
Original languageEnglish
Article numberA65
JournalAstronomy & Astrophysics
Volume544
DOIs
Publication statusPublished - 1 Aug 2012
Externally publishedYes

Fingerprint

Dive into the research topics of 'The GALEX Arecibo SDSS Survey. VI. Second data release and updated gas fraction scaling relations'. Together they form a unique fingerprint.

Cite this