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[C II] 158 µm Emission as a Star Formation Tracer
Helou, G.; Boquien, M.; Roussel, H. +23 more
The [C II] 157.74 µm transition is the dominant coolant of the neutral interstellar gas, and has great potential as a star formation rate (SFR) tracer. Using the Herschel KINGFISH sample of 46 nearby galaxies, we investigate the relation of [C II] surface brightness and luminosity with SFR. We conclude that [C II] can be used for measurement…
Tau-REx I: A Next Generation Retrieval Code for Exoplanetary Atmospheres
Waldmann, I. P.; Rocchetto, M.; Tinetti, G. +3 more
Spectroscopy of exoplanetary atmospheres has become a well established method for the characterization of extrasolar planets. We here present a novel inverse retrieval code for exoplanetary atmospheres. T-REx(Tau Retrieval for Exoplanets) is a line-by-line radiative transfer fully Bayesian retrieval framework. T-REx includes the following features…
Are Ultra-faint Galaxies at z = 6-8 Responsible for Cosmic Reionization? Combined Constraints from the Hubble Frontier Fields Clusters and Parallels
Richard, Johan; Schaerer, Daniel; Kneib, Jean-Paul +8 more
We use deep Hubble Space Telescope imaging of the Frontier Fields to accurately measure the galaxy rest-frame ultraviolet luminosity function (UV LF) in the redshift range z ∼ 6-8. We combine observations in three lensing clusters, A2744, MACS 0416, and MACS 0717, and their associated parallel fields to select high-redshift dropout candidates. We …
The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. III. A Quintuple Stellar Population in NGC 2808
Anderson, J.; Milone, A. P.; Marino, A. F. +9 more
In this study we present the first results from multi-wavelength Hubble Space Telescope (HST) observations of the Galactic globular cluster (GC) NGC 2808 as an extension of the Hubble Space Telescope UV Legacy Survey of Galactic GCs (GO-13297 and previous proprietary and HST archive data). Our analysis allowed us to disclose a multiple-stellar-pop…
The Light Curve of the Macronova Associated with the Long-Short Burst GRB 060614
Li, Xiang; Jin, Zhi-Ping; Covino, Stefano +3 more
The Swift-detected GRB 060614 was a unique burst that straddles an imaginary divide between long- and short-duration gamma-ray bursts (GRBs), and its physical origin has been heavily debated over the years. Recently, a distinct, very soft F814W-band excess at t∼ 13.6 days after the burst was identified in a joint-analysis of VLT and Hubble Space T…
Hubble Frontier Fields First Complete Cluster Data: Faint Galaxies at z ~ 5-10 for UV Luminosity Functions and Cosmic Reionization
Ono, Yoshiaki; Ouchi, Masami; Shimasaku, Kazuhiro +3 more
We present comprehensive analyses of faint dropout galaxies up to z ~ 10 with the first full-depth data set of the A2744 lensing cluster and parallel fields observed by the Hubble Frontier Fields (HFF) program. We identify 54 dropouts at z ~ 5-10 in the HFF fields and enlarge the size of the z ~ 9 galaxy sample obtained to date. Although the numbe…
Major Mergers Host the Most-luminous Red Quasars at z ~ 2: A Hubble Space Telescope WFC3/IR Study
Schawinski, Kevin; Urry, C. M.; Glikman, Eilat +3 more
We used the Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) near-infrared camera to image the host galaxies of a sample of 11 luminous, dust-reddened quasars at z∼ 2—the peak epoch of black hole growth and star formation in the universe—to test the merger-driven picture for the coevolution of galaxies and their nuclear black holes. The red…
High-precision Photometric Redshifts from Spitzer/IRAC: Extreme [3.6] - [4.5] Colors Identify Galaxies in the Redshift Range z ∼ 6.6 - 6.9
Holwerda, Benne; Franx, Marijn; Labbé, Ivo +7 more
One of the most challenging aspects of studying galaxies in the z≳ 7 universe is the infrequent confirmation of their redshifts through spectroscopy, a phenomenon thought to occur from the increasing opacity of the intergalactic medium to Lyα photons at z\gt 6.5. The resulting redshift uncertainties inhibit the efficient search for [C ii] in z∼ 7 …
Spectroscopic Evidence for a Temperature Inversion in the Dayside Atmosphere of Hot Jupiter WASP-33b
Deming, Drake; Madhusudhan, Nikku; Knutson, Heather +2 more
We present observations of two occultations of the extrasolar planet WASP-33b using the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope, which allow us to constrain the temperature structure and composition of its dayside atmosphere. WASP-33b is the most highly irradiated hot Jupiter discovered to date, and the only exoplanet known to orb…
CLASH-VLT: Insights on the Mass Substructures in the Frontier Fields Cluster MACS J0416.1-2403 through Accurate Strong Lens Modeling
Zitrin, A.; Grillo, C.; Balestra, I. +25 more
We present a detailed mass reconstruction and a novel study on the substructure properties in the core of the Cluster Lensing And Supernova survey with Hubble (CLASH) and Frontier Fields galaxy cluster MACS J0416.1-2403. We show and employ our extensive spectroscopic data set taken with the VIsible Multi-Object Spectrograph instrument as part of o…