Search Publications
The SFR-M* Relation and Empirical Star-Formation Histories from ZFOURGE* at 0.5 < z < 4
Papovich, Casey; Dickinson, Mark; Inami, Hanae +19 more
We explore star formation histories (SFHs) of galaxies based on the evolution of the star formation rate stellar mass relation (SFR-M*). Using data from the FourStar Galaxy Evolution Survey (ZFOURGE) in combination with far-IR imaging from the Spitzer and Herschel observatories we measure the SFR-M* relation at 0.5 < z <…
Space Telescope and Optical Reverberation Mapping Project. III. Optical Continuum Emission and Broadband Time Delays in NGC 5548
Im, M.; Geier, S.; Brandt, W. N. +94 more
We present ground-based optical photometric monitoring data for NGC 5548, part of an extended multiwavelength reverberation mapping campaign. The light curves have nearly daily cadence from 2014 January to July in nine filters (BVRI and ugriz). Combined with ultraviolet data from the Hubble Space Telescope and Swift, we confirm significant time de…
Kiloparsec-scale Dust Disks in High-redshift Luminous Submillimeter Galaxies
Smail, I.; Ivison, R. J.; Menten, K. M. +22 more
We present high-resolution (0.″16) 870 µm Atacama Large Millimeter/submillimeter Array (ALMA) imaging of 16 luminous ({L}{IR}∼ 4× {10}12 {L}⊙ ) submillimeter galaxies (SMGs) from the ALESS survey of the Extended Chandra Deep Field South. This dust imaging traces the dust-obscured star formation in these z∼ 2.…
On Galactic Density Modeling in the Presence of Dust Extinction
Bovy, Jo; Rix, Hans-Walter; Finkbeiner, Douglas P. +2 more
Inferences about the spatial density or phase-space structure of stellar populations in the Milky Way require a precise determination of the effective survey volume. The volume observed by surveys such as Gaia or near-infrared spectroscopic surveys, which have good coverage of the Galactic midplane region, is highly complex because of the abundant…
z ≳ 7 Galaxies with Red Spitzer/IRAC [3.6]-[4.5] Colors in the Full CANDELS Data Set: The Brightest-Known Galaxies at z ~ 7-9 and a Probable Spectroscopic Confirmation at z = 7.48
Oesch, P. A.; van Dokkum, P.; Bouwens, R. J. +9 more
We identify four unusually bright (H {}160,{AB} < 25.5) galaxies from Hubble Space Telescope (HST) and Spitzer CANDELS data with probable redshifts z ∼ 7-9. These identifications include the brightest-known galaxies to date at z ≳ 7.5. As Y-band observations are not available over the full CANDELS program to perform a standard Lyman-…
Cosmological Constraints from Galaxy Clusters in the 2500 Square-degree SPT-SZ Survey
Gladders, M. D.; Schrabback, T.; Rest, A. +74 more
We present cosmological parameter constraints obtained from galaxy clusters identified by their Sunyaev-Zel’dovich effect signature in the 2500 square-degree South Pole Telescope Sunyaev Zel’dovich (SPT-SZ) survey. We consider the 377 cluster candidates identified at z\gt 0.25 with a detection significance greater than five, corresponding to the 9…
Where Stars Form: Inside-out Growth and Coherent Star Formation from HST Hα Maps of 3200 Galaxies across the Main Sequence at 0.7 < z < 1.5
van den Bosch, Frank C.; van Dokkum, Pieter G.; Franx, Marijn +18 more
We present Hα maps at 1 kpc spatial resolution for star-forming galaxies at z ∼ 1, made possible by the Wide Field Camera 3 grism on Hubble Space Telescope (HST). Employing this capability over all five 3D-HST/CANDELS fields provides a sample of 3200 galaxies enabling a division into subsamples based on stellar mass and star formation rate (SFR). …
The Optical-infrared Extinction Curve and Its Variation in the Milky Way
Peek, J. E. G.; Rix, H. -W.; Chambers, K. C. +19 more
The dust extinction curve is a critical component of many observational programs and an important diagnostic of the physics of the interstellar medium. Here we present new measurements of the dust extinction curve and its variation toward tens of thousands of stars, a hundred-fold larger sample than in existing detailed studies. We use data from t…
The MUSCLES Treasury Survey. II. Intrinsic LYα and Extreme Ultraviolet Spectra of K and M Dwarfs with Exoplanets*
Loyd, R. O. Parke; Redfield, Seth; Brown, Alexander +9 more
The ultraviolet (UV) spectral energy distributions (SEDs) of low-mass (K- and M-type) stars play a critical role in the heating and chemistry of exoplanet atmospheres, but are not observationally well-constrained. Direct observations of the intrinsic flux of the Lyα line (the dominant source of UV photons from low-mass stars) are challenging, as i…
Quantifying Discordance in the 2015 Planck CMB Spectrum
Huang, Y.; Halpern, M.; Weiland, J. L. +4 more
We examine the internal consistency of the Planck 2015 cosmic microwave background (CMB) temperature anisotropy power spectrum. We show that tension exists between cosmological constant cold dark matter ({{Λ }}{CDM}) model parameters inferred from multipoles {\ell }\lt 1000 (roughly those accessible to Wilkinson Microwave Anisotropy Probe), and fr…