Bibcode
Bolatto, A. D.; Wong, Tony; Utomo, Dyas; Blitz, Leo; Vogel, Stuart N.; Sánchez, Sebastián F.; Barrera-Ballesteros, Jorge; Cao, Yixian; Colombo, Dario; Dannerbauer, H.; García-Benito, Rubén; Herrera-Camus, Rodrigo; Husemann, Bernd; Kalinova, Veselina; Leroy, Adam K.; Leung, Gigi; Levy, Rebecca C.; Mast, Damián; Ostriker, Eve; Rosolowsky, Erik; Sandstrom, Karin M.; Teuben, Peter; van de Ven, Glenn; Walter, Fabian
Bibliographical reference
The Astrophysical Journal, Volume 846, Issue 2, article id. 159, 46 pp. (2017).
Advertised on:
9
2017
Journal
Citations
162
Refereed citations
152
Description
We present interferometric CO observations, made with the Combined Array
for Millimeter-wave Astronomy (CARMA) interferometer, of galaxies from
the Extragalactic Database for Galaxy Evolution survey (EDGE). These
galaxies are selected from the Calar Alto Legacy Integral Field Area
(CALIFA) sample, mapped with optical integral field spectroscopy. EDGE
provides good-quality CO data (3σ sensitivity {{{Σ
}}}{mol}∼ 11 {M}ȯ {{pc}}-2
before inclination correction, resolution ∼1.4 kpc) for 126
galaxies, constituting the largest interferometric CO survey of galaxies
in the nearby universe. We describe the survey and data characteristics
and products, then present initial science results. We find that the
exponential scale lengths of the molecular, stellar, and star-forming
disks are approximately equal, and galaxies that are more compact in
molecular gas than in stars tend to show signs of interaction. We
characterize the molecular-to-stellar ratio as a function of Hubble type
and stellar mass and present preliminary results on the resolved
relations between the molecular gas, stars, and star-formation rate. We
then discuss the dependence of the resolved molecular depletion time on
stellar surface density, nebular extinction, and gas metallicity. EDGE
provides a key data set to address outstanding topics regarding gas and
its role in star formation and galaxy evolution, which will be publicly
available on completion of the quality assessment.
Related projects
Molecular Gas and Dust in Galaxies Across Cosmic Time
Two of the most fundamental questions in astrophysics are the conversion of molecular gas into stars and how this physical process is a function of environments on all scales, ranging from planetary systems, stellar clusters, galaxies to galaxy clusters. The main goal of this internal project is to get insight into the formation and evolution of
Helmut
Dannerbauer