A survey of molecular gas in luminous sub-millimetre galaxies
Matt Bothwell,Matt Bothwell,Ian Smail,Scott Chapman,Reinhard Genzel,Rob Ivison,Rob Ivison,Linda J. Tacconi,S. Alaghband-Zadeh,Frank Bertoldi,Andrew Blain,Caitlin M. Casey,Peter Timothy Cox,Thomas R. Greve,Dieter Lutz,R. Neri,Alain Omont,A. M. Swinbank +17 more
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In this article, a survey of 12CO emission in 40 luminous sub-millimetre galaxies (SMGs), with 850-μm fluxes of S850μm = 4-20 mJy, was conducted with the Plateau de Bure Interferometer.Abstract:
We present the results from a survey of 12CO emission in 40 luminous sub-millimetre galaxies (SMGs), with 850-μm fluxes of S850 μm = 4–20 mJy, conducted with the Plateau de Bure Interferometer. We detect 12CO emission in 32 SMGs at z ∼ 1.2–4.1, including 16 SMGs not previously published. Using multiple 12CO line (Jup = 2–7) observations, we derive a median spectral line energy distribution for luminous SMGs. We report the discovery of a fundamental relationship between 12CO FWHM and 12CO line luminosity in high-redshift starbursts, which we interpret as a natural consequence of the baryon-dominated dynamics within the regions probed by our observations. We use far-infrared luminosities to assess the star formation efficiency in our SMGs, finding that the slope of the L′CO-LFIR relation is close to linear. We derive molecular gas masses, finding a mean gas mass of (5.3 ± 1.0) × 1010 M⊙. Combining these with dynamical masses, we determine the redshift evolution of the gas content of SMGs, finding that they do not appear to be significantly more gas rich than less vigorously star-forming galaxies at high redshifts. Finally, we collate X-ray observations, and study the interdependence of gas and dynamical properties of SMGs with their AGN activity and supermassive black hole masses (MBH), finding that SMGs lie significantly below the local MBH-σ relation.read more
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The CO-to-H2 Conversion Factor
TL;DR: In this article, the authors review the theoretical underpinning, techniques, and results of efforts to estimate the CO-to-H2 conversion factor in different environments, and recommend a conversion factor XCO = 2×10 20 cm −2 (K km s −1 ) −1 with ±30% uncertainty.
Journal ArticleDOI
Cool Gas in High-Redshift Galaxies
Chris Carilli,Fabian Walter +1 more
TL;DR: In the last decade, observations of the cool interstellar medium (ISM) in distant galaxies via molecular and atomic fine structure line (FSL) emission have gone from a curious look into a few extreme, rare objects to a mainstream tool for studying galaxy formation out to the highest redshifts as mentioned in this paper.
Journal ArticleDOI
PHIBSS: MOLECULAR GAS CONTENT AND SCALING RELATIONS IN z ∼ 1-3 MASSIVE, MAIN-SEQUENCE STAR-FORMING GALAXIES*
Linda J. Tacconi,R. Neri,Reinhard Genzel,Francoise Combes,Alberto D. Bolatto,Michael C. Cooper,Stijn Wuyts,Frédéric Bournaud,Andreas Burkert,Julia M. Comerford,Peter Timothy Cox,Michael Davis,N. M. Förster Schreiber,Santiago García-Burillo,Javier Graciá-Carpio,Dieter Lutz,T. Naab,S. Newman,A. Omont,Amélie Saintonge,K. Shapiro Griffin,Alice E. Shapley,Amiel Sternberg,Benjamin J. Weiner +23 more
TL;DR: In this paper, the IRAM Plateau de Bure high-z blue sequence CO 3-2 survey of the molecular gas properties in massive, main-sequence star-forming galaxies (SFGs) near the cosmic star formation peak is presented.
Journal ArticleDOI
PHIBSS: molecular gas content and scaling relations in z~1-3 normal star forming galaxies
Linda J. Tacconi,R. Neri,R. Genzel,Francoise Combes,A. D. Bolatto,M. C. Cooper,Stijn Wuyts,F. Bournaud,A. Burkert,Julia M. Comerford,Peter Timothy Cox,M. Davi,N. M. Förster Schreiber,S. García Burillo,J. Graciá Carpio,D. Lutz,T. Naab,S. Newman,A. Omont,Amelie Saintonge,K. Shapiro Griffin,Alice E. Shapley,Amiel Sternberg,Ben Weiner +23 more
TL;DR: In this paper, the IRAM Plateau de Bure high-z blue sequence CO 3-2 survey of the molecular gas properties in normal star forming galaxies (SFGs) near the cosmic star formation peak is presented.
Journal ArticleDOI
Physical Models of Galaxy Formation in a Cosmological Framework
Rachel S. Somerville,Romeel Davé +1 more
TL;DR: The current status of models that employ two leading techniques to simulate the physics of galaxy formation: semianalytic models and numerical hydrodynamic simulations is reviewed in this paper, where the authors focus on a set of observational targets that describe the evolution of the global and structural properties of galaxies from roughly cosmic high noon (z ∼ 2 − 3) to the present.
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