Related Papers
The Astrophysical Journal
UV CONTINUUM SLOPE AND DUST OBSCURATION FROM z ∼ 6 TO z ∼ 2: THE STAR FORMATION RATE DENSITY AT HIGH REDSHIFT
2009 •
Gerhardt Meurer
The Astrophysical Journal
THE FMOS-COSMOS SURVEY OF STAR-FORMING GALAXIES AT z ∼ 1.6. I. Hα-BASED STAR FORMATION RATES AND DUST EXTINCTION
2013 •
I. Baronchelli
Astronomy & Astrophysics
The blue UV slopes of z ~ 4 Lyman break galaxies: implications for the corrected star formation rate density
2012 •
Andrea Grazian
Astrophysical Journal Supplement Series
Multiwavelength Constraints on the Cosmic Star Formation History from Spectroscopy: the Rest-Frame Ultraviolet, Halpha, and Infrared Luminosity Functions at Redshifts 1.9 <~ z <~ 3.4
2008 •
Naveen Reddy
THE QUEST FOR DUSTY STAR-FORMING GALAXIES AT HIGH REDSHIFT Z 4
Andrea Lapi, Claudia Mancuso, Rossella Aversa, Jingjing Shi
We exploit the continuity equation approach and the 'main sequence' star-formation timescales to show that the observed high abundance of galaxies with stellar masses a few 10 10 M ⊙ at redshift z 4 implies the existence of a galaxy population featuring large star formation rates (SFRs) ψ 10 2 M ⊙ yr −1 in heavily dust-obscured conditions. These galaxies constitute the high-redshift counterparts of the dusty star-forming population already surveyed for z 3 in the far-IR band by the Herschel space observatory. We work out specific predictions for the evolution of the corresponding stellar mass and SFR functions out to z ∼ 10, elucidating that the number density at z 8 for SFRs ψ 30 M ⊙ yr −1 cannot be estimated relying on the UV luminosity function alone, even when standard corrections for dust extinction based on the UV slope are applied. We compute the number counts and redshift distributions (including galaxy-scale gravitational lensing) of this galaxy population, and show that current data from AzTEC-LABOCA, SCUBA-2 and ALMA-SPT surveys are already digging into it. We substantiate how an observational strategy based on a color preselection in the far-IR or (sub-)mm band with Herschel and SCUBA-2, supplemented by photometric data via on-source observations with ALMA, can allow to reconstruct the bright end of the SFR functions out to z 8. In parallel, such a challenging task can be managed by exploiting current UV surveys in combination with (sub-)mm observations by ALMA and NIKA2 and/or radio observations by SKA and its precursors.
The Astrophysical …
Dust Obscuration and Metallicity at High Redshift: New Inferences From UV, Hα, and 8 μm Observations of Z~ 2 Star-Forming Galaxies
2010 •
NAVEEN REDDY
Astrophysical Journal
Dust Attenuation in UV-selected Starbursts at High Redshift and Their Local Counterparts: Implications for the Cosmic Star Formation Rate Density
2011 •
Thiago Gonçalves
We present a new analysis of the dust obscuration in starburst galaxies at low and high redshifts. This study is motivated by our unique sample of the most extreme UV-selected starburst galaxies in the nearby universe (z < 0.3), found to be good analogs of high-redshift Lyman break galaxies (LBGs) in most of their physical properties. We find that the dust properties of the Lyman break analogs (LBAs) are consistent with the relation derived previously by Meurer et al. (M99) that is commonly used to dust-correct star formation rate (SFR) measurements at a very wide range of redshifts. We directly compare our results with high-redshift samples (LBGs, "BzK," and submillimeter galaxies at z ~ 2-3) having IR data either from Spitzer or Herschel. The attenuation in typical LBGs at z ~ 2-3 and LBAs is very similar. Because LBAs are much better analogs to LBGs compared to previous local star-forming samples, including M99, the practice of dust-correcting the SFRs of high-redshift galaxies based on the local calibration is now placed on a much more solid ground. We illustrate the importance of this result by showing how the locally calibrated relation between UV measurements and extinction is used to estimate the integrated, dust-corrected SFR density at z ~= 2-6.
The Astrophysical Journal
The Complex Physics of Dusty Star-Forming Galaxies at High Redshifts as Revealed Byherschelandspitzer
2012 •
Laura Silva
The Astrophysical Journal
A New Estimate of the Cosmic Star Formation Density from a Radio-selected Sample, and the Contribution of H-dark Galaxies at z ≥ 3
2022 •
Meriem Behiri
The star formation rate density (SFRD) history of the universe is well constrained up to redshift z ∼ 2. At earlier cosmic epochs, the picture has been largely inferred from UV-selected galaxies (e.g., Lyman-break galaxies; LBGs). However, the inferred star formation rates of LBGs strongly depend on the assumed dust extinction correction, which is not well constrained at high z, while observations in the radio domain are not affected by this issue. In this work we measure the SFRD from a 1.4 GHz selected sample of ∼600 galaxies in the GOODS-N field up to redshift ∼3.5. We take into account the contribution of active galactic nuclei from the infrared-radio correlation. We measure the radio luminosity function, fitted with a modified Schechter function, and derive the SFRD. The cosmic SFRD shows an increase up to z ∼ 2 and then an almost flat plateau up to z ∼ 3.5. Our SFRD is in agreement with those from other far-IR/radio surveys and a factor 2 higher than those from LBG samples. We...
Astrophysical Journal
A Census of Optical and Near-Infrared Selected Star-Forming and Passively Evolving Galaxies at Redshift Z~2
2005 •
naveen reddy
Using the extensive multi-wavelength data in the GOODS-North field, we construct and draw comparisons between samples of optical and near-IR selected star-forming and passively evolving galaxies at redshifts 1.4<z<2.6. We find overlap at the 70-80% level in samples of z~2 star-forming galaxies selected by their optical (UGR) and near-IR (BzK) colors when subjected to common K-band limits. Deep Chandra data indicate a 25% AGN fraction among near-IR selected objects, much of which occurs among near-IR bright objects (K<20; Vega). Stacking the X-ray emission for the star-forming galaxies, we find the SFR distributions of UGR, BzK, and J-K>2.3 galaxies (Distant Red Galaxies; DRGs) are very similar as a function of K, with K<20 galaxies having <SFR>~120 Msun/yr, a factor of two to three higher than those with K>20.5. The absence of X-ray emission from the reddest DRGs and BzK galaxies with z-K>3 indicates they must have declining star formation histories to explain their red colors and low SFRs. While the M/L ratio of passively-evolving galaxies may be larger on average, the Spitzer/IRAC data indicate that their inferred stellar masses do not exceed the range spanned by optically selected galaxies, suggesting that the disparity in current SFR may not indicate a fundamental difference between optical and near-IR selected massive galaxies (M* > 10^11 Msun). We consider the contribution of UGR, BzK, DRG, and submillimeter galaxies (SMGs) to the SFRD at z~2, taking into account sample overlap. The total SFRD in the interval 1.4<z<2.6 of UGR and BzK galaxies to K=22, and DRGs to K=21 is ~ 0.10+/-0.02 Msun/yr/Mpc^3. Optically-selected galaxies to R=25.5 and K=22 account for ~70% of this total. Of the radio-selected SMGs to S(850 micron)~4 mJy with redshifts 1.4<z<2.6, >80% could be selected by the UGR, BzK, and/or DRG criteria.
