Search Publications
The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: testing gravity with redshift space distortions using the power spectrum multipoles
Ross, Nicholas P.; Font-Ribera, Andreu; Ho, Shirley +15 more
We analyse the anisotropic clustering of the Baryon Oscillation Spectroscopic Survey (BOSS) CMASS Data Release 11 (DR11) sample, which consists of 690 827 galaxies in the redshift range 0.43 < z < 0.7 and has a sky coverage of 8498 deg2. We perform our analysis in Fourier space using a power spectrum estimator suggested by Yamamot…
The Quenching of the Ultra-faint Dwarf Galaxies in the Reionization Era
Ferguson, Henry C.; Brown, Thomas M.; Gennaro, Mario +11 more
We present new constraints on the star formation histories of six ultra-faint dwarf galaxies: Bootes I, Canes Venatici II, Coma Berenices, Hercules, Leo IV, and Ursa Major I. Our analysis employs a combination of high-precision photometry obtained with the Advanced Camera for Surveys on the Hubble Space Telescope, medium-resolution spectroscopy ob…
An ALMA survey of sub-millimetre Galaxies in the Extended Chandra Deep Field South: the far-infrared properties of SMGs
Thomson, A. P.; Ivison, R. J.; Smail, Ian +22 more
We exploit Atacama Large Millimeter Array (ALMA) 870 µm observations of sub-millimetre sources in the Extended Chandra Deep Field South to investigate the far-infrared properties of high-redshift sub-millimetre galaxies (SMGs). Using the precisely located 870 µm ALMA positions of 99 SMGs, together with 24µm and radio imaging, we …
The Galactic O-Star Spectroscopic Survey (GOSSS). II. Bright Southern Stars
Maíz Apellániz, J.; Alfaro, E. J.; Barbá, R. H. +5 more
We present the second installment of GOSSS, a massive spectroscopic survey of Galactic O stars, based on new homogeneous, high signal-to-noise ratio, R ~ 2500 digital observations from both hemispheres selected from the Galactic O-Star Catalog (GOSC). In this paper we include bright stars and other objects drawn mostly from the first version of GO…
A Budget and Accounting of Metals at z ~ 0: Results from the COS-Halos Survey
Prochaska, J. Xavier; Tumlinson, Jason; Weinberg, David H. +4 more
We present a budget and accounting of metals in and around star-forming galaxies at z ~ 0. We combine empirically derived star formation histories with updated supernova and asymptotic giant branch yields and rates to estimate the total mass of metals produced by galaxies with present-day stellar mass of 109.3-1011.6 M⊙<…
The role of the reflection fraction in constraining black hole spin.
Fabian, A. C.; Dauser, T.; Wilms, J. +2 more
In many active galaxies, the X-ray reflection features from the innermost regions of the accretion disc are relativistically distorted. This distortion allows us to measure parameters of the black hole such as its spin. The ratio in flux between the direct and the reflected radiation, the so-called reflection fraction, is determined directly from …
Regularity Underlying Complexity: A Redshift-independent Description of the Continuous Variation of Galaxy-scale Molecular Gas Properties in the Mass-star Formation Rate Plane
Aussel, H.; Daddi, E.; Elbaz, D. +6 more
Star-forming galaxies (SFGs) display a continuous specific star formation rate (sSFR) distribution, which can be approximated by two log-normal functions: one encompassing the galaxy main sequence (MS), and the other a rarer, starbursting population. Starburst (SB) sSFRs can be regarded as the outcome of a physical process (plausibly merging) taki…
An ALMA Survey of Submillimeter Galaxies in the Extended Chandra Deep Field South: The Redshift Distribution and Evolution of Submillimeter Galaxies
Thomson, A. P.; Ivison, R. J.; Smail, Ian +21 more
We present the first photometric redshift distribution for a large sample of 870 µm submillimeter galaxies (SMGs) with robust identifications based on observations with ALMA. In our analysis we consider 96 SMGs in the Extended Chandra Deep Field South, 77 of which have 4-19 band photometry. We model the SEDs for these 77 SMGs, deriving a med…
The Most Luminous z ~ 9-10 Galaxy Candidates Yet Found: The Luminosity Function, Cosmic Star-formation Rate, and the First Mass Density Estimate at 500 Myr
Trenti, M.; Brammer, G. B.; Oesch, P. A. +15 more
We present the discovery of four surprisingly bright (H 160 ~ 26-27 mag AB) galaxy candidates at z ~ 9-10 in the complete HST CANDELS WFC3/IR GOODS-N imaging data, doubling the number of z ~ 10 galaxy candidates that are known, just ~500 Myr after the big bang. Two similarly bright sources are also detected in a reanalysis of the GOODS-…
Line-emitting Galaxies beyond a Redshift of 7: An Improved Method for Estimating the Evolving Neutrality of the Intergalactic Medium
Stark, Daniel P.; Ellis, Richard S.; Konidaris, Nick P. +1 more
The redshift-dependent fraction of color-selected galaxies revealing Lyman alpha (Lyα) emission, x Lyα has become the most valuable constraint on the evolving neutrality of the early intergalactic medium. However, in addition to resonant scattering by neutral gas, the visibility of Lyα is also dependent on the intrinsic properties of th…