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Weather on Other Worlds. II. Survey Results: Spots are Ubiquitous on L and T Dwarfs
Goldman, Bertrand; Apai, Dániel; Marley, Mark S. +7 more
We present results from the Weather on Other Worlds Spitzer Exploration Science program to investigate photometric variability in L and T dwarfs, usually attributed to patchy clouds. We surveyed 44 L3-T8 dwarfs, spanning a range of J - Ks colors and surface gravities. We find that 14/23 (61%-20%+17%, 95% confidence…
A Turnover in the Galaxy Main Sequence of Star Formation at M * ~ 1010 M ⊙ for Redshifts z < 1.3
Casey, Caitlin M.; Kartaltepe, Jeyhan S.; Kewley, Lisa J. +14 more
The relationship between galaxy star formation rates (SFRs) and stellar masses (M *) is reexamined using a mass-selected sample of ~62,000 star-forming galaxies at z <= 1.3 in the COSMOS 2 deg2 field. Using new far-infrared photometry from Herschel-PACS and SPIRE and Spitzer-MIPS 24 µm, along with derived infrared lu…
LoCuSS: The Slow Quenching of Star Formation in Cluster Galaxies and the Need for Pre-processing
Finoguenov, A.; Smith, G. P.; Okabe, N. +8 more
We present a study of the spatial distribution and kinematics of star-forming galaxies in 30 massive clusters at 0.15 < z < 0.30, combining wide-field Spitzer 24 µm and GALEX near-ultraviolet imaging with highly complete spectroscopy of cluster members. The fraction (fSF) of star-forming cluster galaxies rises steadily with …
A Measurement of Secondary Cosmic Microwave Background Anisotropies from the 2500 Square-degree SPT-SZ Survey
Bleem, L. E.; Stark, A. A.; George, E. M. +45 more
We present measurements of secondary cosmic microwave background (CMB) anisotropies and cosmic infrared background (CIB) fluctuations using data from the South Pole Telescope (SPT) covering the complete 2540 deg2 SPT-SZ survey area. Data in the three SPT-SZ frequency bands centered at 95, 150, and 220 GHz, are used to produce six angula…
Herschel Survey of Galactic OH+, H2O+, and H3O+: Probing the Molecular Hydrogen Fraction and Cosmic-Ray Ionization Rate
Menten, K. M.; Falgarone, E.; Godard, B. +19 more
In diffuse interstellar clouds the chemistry that leads to the formation of the oxygen-bearing ions OH+, H2O+, and H3O+ begins with the ionization of atomic hydrogen by cosmic rays, and continues through subsequent hydrogen abstraction reactions involving H2. Given these reaction pa…
A Spectroscopic Redshift Measurement for a Luminous Lyman Break Galaxy at z = 7.730 Using Keck/MOSFIRE
Oesch, P. A.; Bouwens, R. J.; Illingworth, G. D. +9 more
We present a spectroscopic redshift measurement of a very bright Lyman break galaxy at z=7.7302+/- 0.0006 using the Keck/Multi-Object Spectrometer for Infra-Red Exploration. The source was pre-selected photometrically in the EGS field as a robust z ∼ 8 candidate with H = 25.0 mag based on optical non-detections and a very red Spitzer/IRAC [3.6]-[4…
The Grism Lens-Amplified Survey from Space (GLASS). I. Survey Overview and First Data Release
Malkan, M. A.; Poggianti, B.; Vulcani, B. +19 more
We give an overview of the Grism Lens Amplified Survey from Space (GLASS), a large Hubble Space Telescope program aimed at obtaining grism spectroscopy of the fields of 10 massive clusters of galaxies at redshift z = 0.308-0.686, including the Hubble Frontier Fields (HFF). The Wide Field Camera 3 (WFC3) yields near-infrared spectra of the cluster …
The SCUBA-2 Cosmology Legacy Survey: ALMA Resolves the Rest-frame Far-infrared Emission of Sub-millimeter Galaxies
Thomson, A. P.; Ivison, R. J.; Scott, D. +26 more
We present high-resolution (0.''3) Atacama Large Millimeter Array 870 µm imaging of 52 sub-millimeter galaxies (SMGs) in the Ultra Deep Survey field to investigate the size and morphology of the sub-millimeter (sub-mm) emission on 2-10 kpc scales. We derive a median intrinsic angular size of FWHM = 0.''30 ± 0.''04 for the 23 SMGs in the samp…
GOODS-Herschel: Star Formation, Dust Attenuation, and the FIR-radio Correlation on the Main Sequence of Star-forming Galaxies up to z ≃4
Aussel, H.; Daddi, E.; Elbaz, D. +25 more
We use deep panchromatic data sets in the GOODS-N field, from GALEX to the deepest Herschel far-infrared (FIR) and VLA radio continuum imaging, to explore the evolution of star-formation activity and dust attenuation properties of star-forming galaxies to z ≃ 4, using mass-complete samples. Our main results can be summarized as follows: (i) the sl…
Blowin' in the Wind: Both "Negative" and "Positive" Feedback in an Obscured High-z Quasar
Maiolino, R.; Silverman, J. D.; Merloni, A. +13 more
Quasar feedback in the form of powerful outflows is invoked as a key mechanism to quench star formation in galaxies, preventing massive galaxies to overgrow and producing the red colors of ellipticals. On the other hand, some models are also requiring "positive" active galactic nucleus feedback, inducing star formation in the host galaxy through e…