Showing 2015 · astro-ph.GAShow all

73 papers · 2 filters

astro-ph.GA2015★ 28 cited

On R-W1 as A Diagnostic to Discover Obscured Active Galactic Nuclei in Wide-Area X-ray Surveys

Stephanie M. LaMassa, Francesca Civano, Marcella Brusa +18

Capitalizing on the all-sky coverage of {\it WISE}, and the 35\% and 50\% sky coverage from SDSS and Pan-STARRS, respectively, we explore the efficacy of (optical) - $m_{3.…

astro-ph.GA2015★ 34 cited

Planck cold clumps in the Orionis complex: I. Discovery of an extremely young Class 0 protostellar object and a proto-brown dwarf candidate in a bright rimmed clump PGCC G192.32-11.88

Tie Liu, Qizhou Zhang, Kee-Tae Kim +37

We are performing a series of observations with ground-based telescopes toward Planck Galactic cold clumps (PGCCs) in the Orionis complex in order to systematically investigate…

astro-ph.GA2015★ 199 cited

A multi-wavelength analysis for interferometric (sub-)mm observations of protoplanetary disks: radial constraints on the dust properties and the disk structure

M. Tazzari, L. Testi, B. Ercolano +20

Theoretical models of grain growth predict dust properties to change as a function of protoplanetary disk radius, mass, age and other physical conditions. We lay down the methodolo…

astro-ph.GA2015★ 29 cited

Physical properties of star clusters in the outer LMC as observed by the Dark Energy Survey

A. Pieres, B. Santiago, E. Balbinot +57

The Large Magellanic Cloud (LMC) harbors a rich and diverse system of star clusters, whose ages, chemical abundances, and positions provide information about the LMC history of sta…

astro-ph.GA2015★ 15 cited

Rotational spectra of isotopic species of methyl cyanide, CHCN, in their excited vibrational states

H. S. P. Müller, B. J. Drouin, J. C. Pearson +3

Methyl cyanide is an important trace molecule in space, especially in star-forming regions where it is one of the more common molecules used to derive kinetic temperatures. We want…

astro-ph.GA2015★ 90 cited

The 31 Deg Release of the Stripe 82 X-ray Survey: The Point Source Catalog

Stephanie M. LaMassa, C. Megan Urry, Nico Cappelluti +23

We release the next installment of the Stripe 82 X-ray survey point-source catalog, which currently covers 31.3 deg of the Sloan Digital Sky Survey (SDSS) Stripe 82 Legacy fiel…

astro-ph.GA2015★ 47 cited

The HerMES sub-millimetre local and low-redshift luminosity functions

L. Marchetti, M. Vaccari, A. Franceschini +44

We used wide area surveys over 39 deg by the HerMES collaboration, performed with the Herschel Observatory SPIRE multi-wavelength camera, to estimate the low-redshift, $0.02<z<…

astro-ph.GA2015★ 76 cited

A mature galaxy cluster at z=1.58 around the radio galaxy 7C1753+6311

E. A. Cooke, N. A. Hatch, D. Stern +9

We report on the discovery of a z=1.58 mature cluster around the high-redshift radio galaxy 7C1753+6311, first identified in the Clusters Around Radio-Loud AGN survey. Two-thirds o…

astro-ph.GA2015★ 78 cited

The Strikingly Uniform, Highly Turbulent Interstellar Medium of the Most Luminous Galaxy in the Universe

T. Diaz-Santos, R. J. Assef, A. W. Blain +6

Observed at z = 4.601 and with L_bol = 3.5 x 10^14 Lsun, W2246-0526 is the most luminous galaxy known in the Universe, and hosts a deeply-buried active galactic nucleus (AGN)/super…

astro-ph.GA2015★ 43 cited

Discovery of A Faint Quasar at z~6 and Implications for Cosmic Reionization

Yongjung Kim, Myungshin Im, Yiseul Jeon +15

Recent studies suggest that faint active galactic nuclei may be responsible for the reionization of the universe. Confirmation of this scenario requires spectroscopic identificatio…

astro-ph.GA2015★ 36 cited

On the redshift distribution and physical properties of ACT-selected DSFGs

T. Su, T. A. Marriage, V. Asboth +25

We present multi-wavelength detections of nine candidate gravitationally-lensed dusty star-forming galaxies (DSFGs) selected at 218GHz (1.4mm) from the ACT equatorial survey. Among…

astro-ph.GA2015★ 69 cited

Hot Dust Obscured Galaxies with Excess Blue Light: Dual AGN or Single AGN Under Extreme Conditions?

R. J. Assef, D. J. Walton, M. Brightman +10

Hot Dust-Obscured Galaxies (Hot DOGs) are a population of hyper-luminous infrared galaxies identified by the WISE mission from their very red mid-IR colors, and characterized by ho…

astro-ph.GA2015★ 17 cited

A Correlation Between Lyα Spectral Line Profile and Rest-Frame UV Morphology

Vivian U, Shoubaneh Hemmati, Behnam Darvish +6

We explore the relationship between the spectral shape of the Lyα emission and the UV morphology of the host galaxy using a sample of 304 Lyα-emitting BV i-dropouts at 3 < z < 7 in…

astro-ph.GA2015★ 12 cited

Herschel HIFI Observations of the Sgr A +50 km/s Cloud. Deep Searches for O2 in Emission and Foreground Absorption

Aa. Sandqvist, B. Larsson, Å. Hjalmarson +8

To date O2 has definitely been detected in only two sources, namely rho Oph A and Orion, reflecting the extremely low abundance of O2 in the interstellar medium. One of the sources…

astro-ph.GA2015★ 58 cited

Herschel Galactic plane survey of [NII] fine structure emission

Paul F. Goldsmith, Umut A. Yıldız, William D. Langer +1

We present the first large scale high angular resolution survey of ionized nitrogen in the Galactic Plane through emission of its two fine structure transitions ([NII]) at 122 m…

astro-ph.GA2015

A NuSTAR Survey of Nearby Ultraluminous Infrared Galaxies

Stacy H. Teng, Jane R. Rigby, Daniel Stern +17

We present a NuSTAR, Chandra, and XMM--Newton survey of nine of the nearest ultraluminous infrared galaxies (ULIRGs). The unprecedented sensitivity of NuSTAR at energies above 10 k…

astro-ph.GA2015★ 27 cited

The Mysterious Morphology of MRC0943-242 as Revealed by ALMA and MUSE

Bitten Gullberg, Carlos De Breuck, Matthew D. Lehnert +11

We present a pilot study of the z=2.923 radio galaxy MRC0943-242, where we for the first time combine information from ALMA and MUSE data cubes. Even with modest integration times,…

astro-ph.GA2015★ 1 cited

Probing star formation in the dense environments of z~1 lensing halos aligned with dusty star-forming galaxies detected with the South Pole Telescope

N. Welikala, M. Béthermin, D. Guery +46

We probe star formation in the environments of massive dark matter halos at redshifts of . This star formation is linked to a sub-millimetre cl…

astro-ph.GA2015★ 314 cited

Space Telescope and Optical Reverberation Mapping Project. III. Optical Continuum Emission and Broad-Band Time Delays in NGC 5548

M. M. Fausnaugh, K. D. Denney, A. J. Barth +94

We present ground-based optical photometric monitoring data for NGC 5548, part of an extended multi-wavelength reverberation mapping campaign. The light curves have nearly daily ca…

astro-ph.GA2015★ 209 cited

Formation of Massive Primordial Stars: Intermittent UV Feedback with Episodic Mass Accretion

Takashi Hosokawa, Shingo Hirano, Rolf Kuiper +3

We present coupled stellar evolution (SE) and 3D radiation-hydrodynamic (RHD) simulations of the evolution of primordial protostars, their immediate environment, and the dynamic ac…

astro-ph.GA2015★ 125 cited

Velocity-resolved [CII] emission and [CII]/FIR Mapping along Orion with Herschel

J. R. Goicoechea, D. Teyssier, M. Etxaluze +22

We present the first 7.5'x11.5' velocity-resolved map of the [CII]158um line toward the Orion molecular cloud-1 (OMC-1) taken with the Herschel/HIFI instrument. In combination with…

astro-ph.GA2015★ 80 cited

BAT AGN Spectroscopic Survey II: X-ray Emission and High Ionization Optical Emission Lines

Simon Berney, Michael Koss, Benny Trakhtenbrot +17

We investigate the relationship between X-ray and optical line emission in 340 nearby AGN selected above 10 keV using Swift BAT. We find a weak correlation between the extinction c…

astro-ph.GA2015★ 44 cited

Radio Jet Feedback and Star Formation in Heavily Obscured Quasars at Redshifts ~0.3-3, I: ALMA Observations

Carol J. Lonsdale, Mark Lacy, Amy E. Kimball +17

We present ALMA 870 micron (345 GHz) data for 49 high redshift (0.47<z<2.85), luminous (11.7 < log L(bol) (Lsun) < 14.2) radio-powerful AGN, obtained to constrain cool dust emissio…

astro-ph.GA2015★ 71 cited

The NANOGrav Nine-year Data Set: Astrometric Measurements of 37 Millisecond Pulsars

Allison M. Matthews, David J. Nice, Emmanuel Fonseca +18

Using the nine-year radio-pulsar timing data set from the North American Nanohertz Observatory for Gravitational Waves (NANOGrav), collected at Arecibo Observatory and the Green Ba…