350 μm Observations of Ultraluminous Infrared Galaxies at Intermediate Redshifts

Yang, Moon Young; Greve, T. R.; Dowell, C. D.; Borys, Colin

doi:10.1086/514809

Cited by 43 publications

(68 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Sanders & Mirabel 1996;Elbaz et al 2010). Yang et al (2007) have observed seven of our objects at 350 μm and derive more precise temperatures, which are very similar to the values computed above. We note a clear increase in the dust temperatures with respect to our 0.2 < z < 0.6 sample in Paper II.…”

Section: Molecular Gas Excitationsupporting

confidence: 86%

Gas fraction and star formation efficiency atz< 1.0

Combes

García‐Burillo

Braine

et al. 2013

A&A

129

143

View full text Add to dashboard Cite

After new observations of 39 galaxies at z ∼ 0.6-1.0 obtained at the IRAM 30-m telescope, we present our full CO line survey covering the redshift range 0.2 < z < 1. Our aim is to determine the driving factors accounting for the steep decline in the star formation rate during this epoch. We study both the gas fraction, defined as M gas /(M gas + M star ), and the star formation efficiency (SFE) defined by the ratio between far-infrared luminosity and molecular gas mass (L FIR /M(H 2 )), i.e. a measure for the inverse of the gas depletion time. The sources are selected to be ultra-luminous infrared galaxies (ULIRGs), with L FIR greater than 10 12 L and experiencing starbursts. When we adopt a standard ULIRG CO-to-H 2 conversion factor, their molecular gas depletion time is less than 100 Myr. Our full survey has now filled the gap of CO observations in the 0.2 < z < 1 range covering almost half of cosmic history. The detection rate in the 0.6 < z < 1 interval is 38% (15 galaxies out of 39), compared to 60% for the 0.2 < z < 0.6 interval. The average CO luminosity is L CO = 1.8 × 10 10 K km s −1 pc 2 , corresponding to an average H 2 mass of 1.45 × 10 10 M . From observation of 7 galaxies in both CO(2-1) and CO(4-3), a high gas excitation has been derived; together with the dust mass estimation, this supports the choice of our low ULIRG conversion factor between CO luminosity and H 2 for our sample sources. We find that both the gas fraction and the SFE significantly increase with redshift, by factors of 3 ± 1 from z = 0 to 1, and therefore both quantities play an important role and complement each other in cosmic star formation evolution.

show abstract

Section: Molecular Gas Excitationsupporting

confidence: 86%

Gas fraction and star formation efficiency atz< 1.0

Combes

García‐Burillo

Braine

et al. 2013

A&A

129

143

View full text Add to dashboard Cite

show abstract

“…Although to test this one needs both robust measurements of the T d (based on observations that probe the peak of the SED of the galaxies) and to have a large sample of LBGs, the upper limits that we derived in this study can provide a first insight. Clements et al (2010) and Yang et al (2007). In all these studies, the T d was measured in manner that is similar to ours, fitting modified black-body models with fixed β=1.5 to the FIR photometric points of each sample, hence the comparison between these studies and our sample is meaningful.…”

Section: Comparison With Smgsmentioning

confidence: 95%

“…We note that these values correspond to 3σ upper and lower T d limits for IRAC and MIPS LBGs. Included are results for 0<z<0.98 ULIRGs (blue filled triangles, Clements et al 2010, Yang et al 2007). The green shaded region depicts the loci of high-z SMGs by Chapman et al (2005), while the orange shaded area shows the 2σ envelope of the L IR − T d relation for local IR galaxies in SDSS (excluding AGNs) adopted from Hwang et al (2010 in prep).…”

Section: Comparison With Smgsmentioning

confidence: 99%

A FIRST GLIMPSE INTO THE FAR-IR PROPERTIES OF HIGH- z UV-SELECTED GALAXIES: HERSCHEL /PACS OBSERVATIONS OF z ∼ 3 LBGS

Magdis

Elbaz

Hwang

et al. 2010

ApJ

View full text Add to dashboard Cite

We present first insights into the far-IR properties for a sample of IRAC and MIPS-24µm detected Lyman Break Galaxies (LBGs) at z ∼ 3, as derived from observations in the northern field of the Great Observatories Origins Survey -2 -(GOODS-N) carried out with the PACS instrument on board the Herschel Space Observatory. Although none of our galaxies are detected by Herschel, we employ a stacking technique to construct, for the first time, the average spectral energy distribution of infrared luminous LBGs from UV to radio wavelengths. We derive a median IR luminosity of L IR = 1.6 × 10 12 L ⊙ , placing the population in the class of ultra luminous infrared galaxies (ULIRGs). Complementing our study with existing multi-wavelength data, we put constraints on the dust temperature of the population and find that for their L IR , MIPS-LBGs are warmer than submmluminous galaxies while they fall in the locus of the L IR -T d relation of the local ULIRGs. This, along with estimates based on the average SED, explains the marginal detection of LBGs in current sub-mm surveys and suggests that these latter studies introduce a bias towards the detection of colder ULIRGs in the high-z universe, while missing high-z ULIRGS with warmer dust.

show abstract

“…Therefore, a relation consistent with the local one is an indication of star formation dominating both the IR and radio emissions. There is growing evidence that the correlation holds at redshifts z 1 (Garrett 2002;Gruppioni et al 2003;Appleton et al 2004;Boyle et al 2007;Marleau et al 2007;Vlahakis et al 2007;Yang et al 2007). At higher redshifts sample sizes are small making it difficult to draw robust conclusions (Appleton et al 2004;Kovács et al 2006;Beswick et al 2008;Ibar et al 2008;Sajina et al 2008;Garn et al 2009;Murphy et al 2009;Murphy 2009;Rieke et al 2009;Seymour et al 2009;Younger et al 2009b;Sargent et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Cosmic evolution of submillimeter galaxies and their contribution to stellar mass assembly

Michalowski

Hjorth

Watson

2010

A&A

235

278

View full text Add to dashboard Cite

The nature of galaxies selected at submillimeter wavelengths (SMGs, S 850 3 mJy), some of the bolometrically most luminous objects at high redshifts, is still elusive. In particular their star formation histories and source of emission are not accurately constrained. In this paper we introduce a new approach to analyse the SMG data. Namely, we present the first self-consistent UV-to-radio spectral energy distribution fits of 76 SMGs with spectroscopic redshifts using all photometric datapoints from ultraviolet to radio simultaneously. We find that they are highly star-forming (median star formation rate 713 M yr −1 for SMGs at z > 0.5), moderately dust-obscured (median A V ∼ 2 mag), hosting significant stellar populations (median stellar mass 3.7 × 10 11 M ) of which only a minor part has been formed in the ongoing starburst episode. This implies that in the past, SMGs experienced either another starburst episode or merger with several galaxies. The properties of SMGs suggest that they are progenitors of present-day elliptical galaxies. We find that these bright SMGs contribute significantly to the cosmic star formation rate density (∼20%) and stellar mass density (∼30-50%) at redshifts 2-4. Using number counts at low fluxes we find that as much as 80% of the cosmic star formation at these redshifts took place in SMGs brighter than 0.1 mJy. We find evidence that a linear infrared-radio correlation holds for SMGs in an unchanged form up to redshift of 3.6, though its normalization is offset from the local relation by a factor of ∼2.1 towards higher radio luminosities. We present a compilation of photometry data of SMGs and determinations of cosmic SFR and stellar mass densities.

show abstract

350 μm Observations of Ultraluminous Infrared Galaxies at Intermediate Redshifts

Cited by 43 publications

References 42 publications

Gas fraction and star formation efficiency atz< 1.0

Gas fraction and star formation efficiency atz< 1.0

A FIRST GLIMPSE INTO THE FAR-IR PROPERTIES OF HIGH- z UV-SELECTED GALAXIES: HERSCHEL /PACS OBSERVATIONS OF z ∼ 3 LBGS

Cosmic evolution of submillimeter galaxies and their contribution to stellar mass assembly

Contact Info

Product

Resources

About