Dust and Gas in Star Forming Galaxies at z~3 - Extending Galaxy Uniformity to 11.5 Billion Years

Abstract

We present millimetre dust emission measurements of two Lyman Break Galaxies at z~3 and construct for the first time fully sampled infrared spectral energy distributions (SEDs), from mid-IR to the Rayleigh-Jeans tail, of individually detected, unlensed, UV-selected, main sequence (MS) galaxies at $z=3$. The SED modelling of the two sources confirms previous findings, based on stacked ensembles, of an increasing mean radiation field <U> with redshift, consistent with a rapidly decreasing gas metallicity in z > 2 galaxies. Complementing our study with CO[3-2] emission line observations, we measure the molecular gas mass (M_H2) reservoir of the systems using three independent approaches: 1) CO line observations, 2) the dust to gas mass ratio vs metallicity relation and 3) a single band, dust emission flux on the Rayleigh-Jeans side of the SED. All techniques return consistent M_H2 estimates within a factor of ~2 or less, yielding gas depletion time-scales (tau_dep ~ 0.35 Gyrs) and gas-to-stellar mass ratios (M_H2/M* ~ 0.5-1) for our z~3 massive MS galaxies. The overall properties of our galaxies are consistent with trends and relations established at lower redshifts, extending the apparent uniformity of star-forming galaxies over the last 11.5 billion years.

Accepted for publication at A&A

References in corpus (15)

• Star Formation in AEGIS Field Galaxies since z=1.1 : The Dominance of Gradually Declining Star Formation, and the Main Sequence of Star-Forming Galaxies
• The Herschel view of the dominant mode of galaxy growth from z=4 to the present day
• Combined CO & Dust Scaling Relations of Depletion Time and Molecular Gas Fractions with Cosmic Time, Specific Star Formation Rate and Stellar Mass
• The Role of Pressure in GMC Formation II: The H_2 - Pressure Relation
• Strong Nebular Line Ratios in the Spectra of z~2-3 Star-forming Galaxies: First Results from KBSS-MOSFIRE
• Evolution of the dust emission of massive galaxies up to z=4 and constraints on their dominant mode of star formation
• CO excitation of normal star forming galaxies out to z=1.5 as regulated by the properties of their interstellar medium
• A Turnover in the Galaxy Main Sequence of Star Formation at $M_{\ast }\sim 10^{10}{M}_{\odot }$ for Redshifts $z<1.3$
• Star formation relations and CO SLEDs across the J-ladder and redshift
• Dust continuum emission as a tracer of gas mass in galaxies
• The Cosmic Decline in the H2/HI-Ratio in Galaxies
• Gas Fraction and Depletion Time of Massive Star Forming Galaxies at z~3.2: No Change in Global Star Formation Process out to z>3
• Molecular gas content in strongly-lensed z~1.5-3 star-forming galaxies with low IR luminosities
• The SCUBA-2 Cosmology Legacy Survey: the submillimetre properties of Lyman break galaxies at z=3-5
• Evidence of very low metallicity and high ionization state in a strongly lensed, star-forming dwarf galaxy at z=3.417

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