Search Publications
The MOSFIRE Deep Evolution Field (MOSDEF) Survey: Rest-frame Optical Spectroscopy for ~1500 H-selected Galaxies at 1.37 < z < 3.8
Siana, Brian; van Dokkum, Pieter G.; Conroy, Charlie +21 more
In this paper we present the MOSFIRE Deep Evolution Field (MOSDEF) survey. The MOSDEF survey aims to obtain moderate-resolution (R = 3000-3650) rest-frame optical spectra (∼3700-7000 Å) for ∼1500 galaxies at 1.37≤ z≤ 3.80 in three well-studied CANDELS fields: AEGIS, COSMOS, and GOODS-N. Targets are selected in three redshift intervals: 1.37≤ z≤ 1.…
A census of dense cores in the Aquila cloud complex: SPIRE/PACS observations from the Herschel Gould Belt survey
Martin, P. G.; Hill, T.; White, G. J. +29 more
We present and discuss the results of the Herschel Gould Belt survey (HGBS) observations in an 11 deg2 area of the Aquila molecular cloud complex at d 260 pc, imaged with the SPIRE and PACS photometric cameras in parallel mode from 70 µm to 500 µm. Using the multi-scale, multi-wavelength source extraction algorithm getsource…
The nongravitational interactions of dark matter in colliding galaxy clusters
Massey, Richard; Harvey, David; Tittley, Eric +2 more
Collisions between galaxy clusters provide a test of the nongravitational forces acting on dark matter. Dark matter’s lack of deceleration in the “bullet cluster” collision constrained its self-interaction cross section σDM/m < 1.25 square centimeters per gram (cm2/g) [68% confidence limit (CL)] (σDM, self-inter…
A search for ultralight axions using precision cosmological data
Hlozek, Renée; Grin, Daniel; Marsh, David J. E. +1 more
Ultralight axions (ULAs) with masses in the range 1 0-33 eV ≤ma≤1 0-20 eV are motivated by string theory and might contribute to either the dark-matter or dark-energy densities of the Universe. ULAs could suppress the growth of structure on small scales, lead to an altered integrated Sachs-Wolfe effect on cosmic mi…
Galaxies at redshifts 5 to 6 with systematically low dust content and high [C II] emission
Ilbert, O.; Yan, L.; Carollo, C. M. +11 more
The rest-frame ultraviolet properties of galaxies during the first three billion years of cosmic time (redshift z > 4) indicate a rapid evolution in the dust obscuration of such galaxies. This evolution implies a change in the average properties of the interstellar medium, but the measurements are systematically uncertain owing to untested assu…
A giant comet-like cloud of hydrogen escaping the warm Neptune-mass exoplanet GJ 436b
Sing, David K.; Wheatley, Peter J.; Désert, Jean-Michel +8 more
Exoplanets orbiting close to their parent stars may lose some fraction of their atmospheres because of the extreme irradiation. Atmospheric mass loss primarily affects low-mass exoplanets, leading to the suggestion that hot rocky planets might have begun as Neptune-like, but subsequently lost all of their atmospheres; however, no confident measure…
Morphologies of ∼190,000 Galaxies at z = 0-10 Revealed with HST Legacy Data. I. Size Evolution
Ouchi, Masami; Harikane, Yuichi; Shibuya, Takatoshi
We present the redshift evolution of the galaxy effective radius re obtained from the Hubble Space Telescope (HST) samples of ∼190,000 galaxies at z = 0-10. Our HST samples consist of 176,152 photo-z galaxies at z = 0-6 from the 3D-HST+CANDELS catalog and 10,454 Lyman break galaxies (LBGs) at z = 4-10 identified in the Cosmic Assembly N…
Planck intermediate results. XIX. An overview of the polarized thermal emission from Galactic dust
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +200 more
This paper presents an overview of the polarized sky as seen by Planck HFI at 353 GHz, which is the most sensitive Planck channel for dust polarization. We construct and analyse maps of dust polarization fraction and polarization angle at 1° resolution, taking into account noise bias and possible systematic effects. The sensitivity of the Planck H…
The Discovery of the First “Changing Look” Quasar: New Insights Into the Physics and Phenomenology of Active Galactic Nucleus
Moran, Edward C.; Myers, Adam D.; Heckman, Timothy M. +6 more
SDSS J015957.64+003310.5 is an X-ray selected, z = 0.31 active galactic nucleus (AGN) from the Stripe 82X survey that transitioned from a Type 1 quasar to a Type 1.9 AGN between 2000 and 2010. This is the most distant AGN, and first quasar, yet observed to have undergone such a dramatic change. We re-observed the source with the double spectrograp…
The MOSDEF Survey: Measurements of Balmer Decrements and the Dust Attenuation Curve at Redshifts z ~ 1.4-2.6
Siana, Brian; Shapley, Alice E.; Reddy, Naveen A. +7 more
We present results on the dust attenuation curve of z ∼ 2 galaxies using early observations from the MOSFIRE Deep Evolution Field survey. Our sample consists of 224 star-forming galaxies with zspec = 1.36-2.59 and high signal-to-noise ratio measurements of Hα and Hβ obtained with Keck/MOSFIRE. We construct composite spectral energy dist…