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Resolved atomic lines reveal outflows in two ultraluminous X-ray sources
Fabian, Andrew C.; Middleton, Matthew J.; Pinto, Ciro
Ultraluminous X-ray sources are extragalactic, off-nucleus, point sources in galaxies, and have X-ray luminosities in excess of 3 × 1039 ergs per second. They are thought to be powered by accretion onto a compact object. Possible explanations include accretion onto neutron stars with strong magnetic fields, onto stellar-mass black holes…
ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: Survey Description
Carilli, Chris; Ivison, R. J.; Bell, Eric F. +39 more
We present the rationale for and the observational description of ASPECS: the ALMA SPECtroscopic Survey in the Hubble Ultra-Deep Field (UDF), the cosmological deep field that has the deepest multi-wavelength data available. Our overarching goal is to obtain an unbiased census of molecular gas and dust continuum emission in high-redshift (z > 0.…
CLASH: Joint Analysis of Strong-lensing, Weak-lensing Shear, and Magnification Data for 20 Galaxy Clusters
Donahue, Megan; Zitrin, Adi; Umetsu, Keiichi +3 more
We present a comprehensive analysis of strong-lensing, weak-lensing shear and magnification data for a sample of 16 X-ray-regular and 4 high-magnification galaxy clusters at 0.19≲ z≲ 0.69 selected from Cluster Lensing And Supernova survey with Hubble (CLASH). Our analysis combines constraints from 16-band Hubble Space Telescope observations and wi…
The FourStar Galaxy Evolution Survey (ZFOURGE): Ultraviolet to Far-infrared Catalogs, Medium-bandwidth Photometric Redshifts with Improved Accuracy, Stellar Masses, and Confirmation of Quiescent Galaxies to z ∼ 3.5
Papovich, Casey; Kelson, Daniel D.; Kacprzak, Glenn G. +26 more
The FourStar galaxy evolution survey (ZFOURGE) is a 45 night legacy program with the FourStar near-infrared camera on Magellan and one of the most sensitive surveys to date. ZFOURGE covers a total of 400 arcmin2 in cosmic fields CDFS, COSMOS and UDS, overlapping CANDELS. We present photometric catalogs comprising >70,000 galaxies, se…
The Tight Relation between X-Ray and Ultraviolet Luminosity of Quasars
Lusso, E.; Risaliti, G.
The observed relation between the soft X-ray and the optical-ultraviolet emission in active galactic nuclei (AGNs) is nonlinear and it is usually parametrized as a dependence between the logarithm of the monochromatic luminosity at 2500 Å and at 2 keV. Previous investigations have found that the dispersion of this relation is rather high (∼0.35-0.…
Discovery of a Galaxy Cluster with a Violently Starbursting Core at z = 2.506
Daddi, Emanuele; Tan, Qinghua; Liu, Daizhong +17 more
We report the discovery of a remarkable concentration of massive galaxies with extended X-ray emission at z spec = 2.506, which contains 11 massive (M * ≳ 1011 M ⊙) galaxies in the central 80 kpc region (11.6σ overdensity). We have spectroscopically confirmed 17 member galaxies with 11 from CO and the re…
Host-galaxy Properties of 32 Low-redshift Superluminous Supernovae from the Palomar Transient Factory
Gal-Yam, A.; Filippenko, A. V.; Nugent, P. E. +9 more
We present ultraviolet through near-infrared photometry and spectroscopy of the host galaxies of all superluminous supernovae (SLSNe) discovered by the Palomar Transient Factory prior to 2013 and derive measurements of their luminosities, star formation rates, stellar masses, and gas-phase metallicities. We find that Type I (hydrogen-poor) SLSNe (…
The Hα surface brightness-radius relation: a robust statistical distance indicator for planetary nebulae
Frew, David J.; Parker, Q. A.; Bojičić, I. S.
Measuring the distances to Galactic planetary nebulae (PNe) has been an intractable problem for many decades. We have now established a robust optical statistical distance indicator, the Hα surface brightness-radius or SHα-r relation, which addresses this problem. We developed this relation from a critically evaluated sample of primary …
Planck 2015 results. XXV. Diffuse low-frequency Galactic foregrounds
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +237 more
We discuss the Galactic foreground emission between 20 and 100 GHz based on observations by Planck and WMAP. The total intensity in this part of the spectrum is dominated by free-free and spinning dust emission, whereas the polarized intensity is dominated by synchrotron emission. The Commander component-separation tool has been used to separate t…
The Macronova in GRB 050709 and the GRB-macronova connection
Li, Xiang; Jin, Zhi-Ping; Covino, Stefano +6 more
GRB 050709 was the first short Gamma-ray Burst (sGRB) with an identified optical counterpart. Here we report a reanalysis of the publicly available data of this event and the discovery of a Li-Paczynski macronova/kilonova that dominates the optical/infrared signal at t>2.5 days. Such a signal would arise from 0.05 r-process material launched by…