Showing 2019 · astro-ph.GAShow all

62 papers · 2 filters

astro-ph.GA2019★ 33 cited

ALMA observations reveal no preferred outflow--filament and outflow--magnetic field orientations

T. Baug, Ke Wang, Tie Liu +12

We present a statistical study on the orientation of outflows with respect to large-scale filaments and the magnetic fields. Although filaments are widely observed toward Galactic…

astro-ph.GA2019★ 56 cited

The STRong lensing Insights into the Dark Energy Survey (STRIDES) 2017/2018 follow-up campaign: Discovery of 10 lensed quasars and 10 quasar pairs

C. Lemon, M. W. Auger, R. McMahon +65

We report the results of the STRong lensing Insights from the Dark Energy Survey (STRIDES) follow-up campaign of the late 2017/early 2018 season. We obtained spectra of 65 lensed q…

astro-ph.GA2019★ 64 cited

The HI/OH/Recombination line survey of the inner Milky Way (THOR): data release 2 and HI overview

Y. Wang, H. Beuther, M. R. Rugel +17

With the Very Large Array (VLA) in C-configuration, we observed a large portion of the first Galactic quadrant ( and $\lvert b \rvert \leq 1.25…

astro-ph.GA2019★ 42 cited

The first high-redshift changing-look quasars

Nicholas P. Ross, Matthew J. Graham, Giorgio Calderone +3

We report on three redshift quasars with dramatic changes in their C IV emission lines, the first sample of changing-look quasars (CLQs) at high redshift. This is also the fi…

astro-ph.GA2019★ 33 cited

Stars made in outflows may populate the stellar halo of the Milky Way

Sijie Yu, James S. Bullock, Andrew Wetzel +8

We study stellar-halo formation using six Milky Way-mass galaxies in FIRE-2 cosmological zoom simulations. We find that of the outer ( kpc) stellar halo in each sy…

astro-ph.GA2019★ 33 cited

Spectral Classification and Ionized Gas Outflows in WISE-Selected Hot Dust-Obscured Galaxies

Hyunsung D. Jun, Roberto J. Assef, Franz E. Bauer +7

We present VLT/XSHOOTER rest-frame UV-optical spectra of 10 Hot Dust-Obscured Galaxies (Hot DOGs) at to investigate AGN diagnostics and to assess the presence and effect o…

astro-ph.GA2019★ 175 cited

Milky Way Satellite Census. I. The Observational Selection Function for Milky Way Satellites in DES Y3 and Pan-STARRS DR1

A. Drlica-Wagner, K. Bechtol, S. Mau +55

We report the results of a systematic search for ultra-faint Milky Way satellite galaxies using data from the Dark Energy Survey (DES) and Pan-STARRS1 (PS1). Together, DES and PS1…

astro-ph.GA2019★ 159 cited

The ALPINE-ALMA [CII] Survey: Multi-Wavelength Ancillary Data and Basic Physical Measurements

A. L. Faisst, D. Schaerer, B. C. Lemaux +37

We present the ancillary data and basic physical measurements for the galaxies in the ALMA Large Program to Investigate C+ at Early Times (ALPINE) survey - the first large multi-wa…

astro-ph.GA2019★ 43 cited

BAT AGN Spectroscopic Survey -- XIX: Type 1 versus Type 2 AGN dichotomy from the point of view of ionized outflows

A. F. Rojas, E. Sani, I. Gavignaud +18

We present a detailed study of ionized outflows in a large sample of ~650 hard X-ray detected AGN. Using optical spectroscopy from the BAT AGN Spectroscopic Survey (BASS) we are ab…

astro-ph.GA2019★ 19 cited

The Massive and Distant Clusters of WISE Survey VII: The Environments and Properties of Radio Galaxies in Clusters at z~1

Emily Moravec, Anthony H. Gonzalez, Daniel Stern +8

We present the results from a study with NSF's Karl G. Jansky Very Large Array (VLA) to determine the radio morphologies of extended radio sources and the properties of their host…

astro-ph.GA2019★ 38 cited

Strong excess Faraday rotation on the Inside of the Sagittarius spiral arm

R. Shanahan, S. J. Lemmer, J. M. Stil +12

We present first results for Faraday rotation of compact polarized sources (1 to 2 GHz continuum) in The HI/OH/Recombination line (THOR) survey of the inner Galaxy. In the Galactic…

astro-ph.GA2019★ 11 cited

VLT/SINFONI study of black hole growth in high redshift radio-loud quasars from the CARLA survey

M. Marinello, R. A. Overzier, H. J. A. Röttgering +11

We present VLT/SINFONI observations of 35 quasars at 2.1 < z < 3.2, the majority of which were selected from the Clusters Around Radio-Loud AGN (CARLA) survey. CARLA quasars have l…

astro-ph.GA2019★ 41 cited

A Catalog of AGN Host Galaxies Observed with HST/ACS: Correlations between Star Formation and AGN Activity

Aaron Stemo, Julia M. Comerford, R. Scott Barrows +3

We present the Advanced Camera for Surveys Active Galactic Nuclei (ACS-AGN) Catalog, a catalog of 2585 active galactic nucleus (AGN) host galaxies that are at redshifts 0.2<z<2.5 a…

astro-ph.GA2019★ 5 cited

Tracing the Formation of Molecular Clouds in a Low-Metallicity Galaxy: A HI Narrow Self-Absorption Survey of the Large Magellanic Cloud

Boyang Liu, Di Li, Lister Staveley-Smith +3

Cold atomic hydrogen clouds are the precursors of molecular clouds. Due to self-absorption, the opacity of cold atomic hydrogen may be high, and this gas may constitute an importan…

astro-ph.GA2019★ 73 cited

Birds of a Feather? Magellan/IMACS Spectroscopy of the Ultra-Faint Satellites Grus II, Tucana IV, and Tucana V

J. D. Simon, T. S. Li, D. Erkal +54

We present Magellan/IMACS spectroscopy of three recently discovered ultra-faint Milky Way satellites, Grus II, Tucana IV, and Tucana V. We measure systemic velocities of V_hel = -1…

astro-ph.GA2019★ 53 cited

Swirls of FIRE: Spatially Resolved Gas Velocity Dispersions and Star Formation Rates in FIRE-2 Disk Environments

Matthew E. Orr, Christopher C. Hayward, Anne M. Medling +6

We study the spatially resolved (sub-kpc) gas velocity dispersion ()--star formation rate (SFR) relation in the FIRE-2 (Feedback in Realistic Environments) cosmological simulati…

astro-ph.GA2019★ 24 cited

An Imprint of the Galactic Magnetic Field in the Diffuse Unpolarized Dust Emission

Brandon S. Hensley, Cheng Zhang, James J. Bock

It is well known that aligned, aspherical dust grains emit polarized radiation and that the degree of polarization depends on the angle between the interstellar magnetic field…

astro-ph.GA2019★ 35 cited

X-ray Observations of a Quasar/Galaxy Merger

Thomas Connor, Eduardo Bañados, Daniel Stern +7

Quasars at early redshifts () with companion galaxies offer unique insights into the growth and evolution of the first supermassive black holes. Here, we report on a 150 ks…

astro-ph.GA2019★ 15 cited

BAT AGN Spectroscopic Survey -- XIII. The nature of the most luminous obscured AGN in the low-redshift universe

Rudolf E. Bär, Benny Trakhtenbrot, Kyuseok Oh +18

We present a multi wavelength analysis of 28 of the most luminous low-redshift narrow-line, ultra-hard X-ray selected active galactic nuclei (AGN) drawn from the 70 month Swift/BAT…

astro-ph.GA2019★ 53 cited

Magnetic fields in the infrared dark cloud G34.43+0.24

Archana Soam, Tie Liu, B-G Andersson +11

We present the B-fields mapped in IRDC G34.43+0.24 using 850\,m polarized dust emission observed with the POL-2 instrument at JCMT. We examine the magnetic field geometries and…

astro-ph.GA2019★ 59 cited

Double dark matter vision: twice the number of compact-source lenses with narrow-line lensing and the WFC3 grism

A. M. Nierenberg, D. Gilman, T. Treu +9

The magnifications of compact-source lenses are extremely sensitive to the presence of low mass dark matter halos along the entire sight line from the source to the observer. Tradi…

astro-ph.GA2019★ 82 cited

Euclid preparation: V. Predicted yield of redshift 7<z<9 quasars from the wide survey

Euclid Collaboration, R. Barnett, S. J. Warren +126

We provide predictions of the yield of quasars from the Euclid wide survey, updating the calculation presented in the Euclid Red Book in several ways. We account for revisi…

astro-ph.GA2019★ 21 cited

The water line emission and ortho-to-para ratio in the Orion Bar photon-dominated region

T. Putaud, X. Michaut, F. Le Petit +2

A very low ortho-to-para ratio (OPR) of 0.1-0.5 was previously reported in the Orion Bar photon-dominated region (PDR), based on observations of two optically thin $\mathrm{H_2^{18…

astro-ph.GA2019★ 48 cited

Space Telescope and Optical Reverberation Mapping Project. VIII. Time Variability of Emission and Absorption in NGC 5548 Based on Modeling the Ultraviolet Spectrum

G. A. Kriss, G. De Rosa, J. Ely +164

We model the ultraviolet spectra of the Seyfert 1 galaxy NGC~5548 obtained with the Hubble Space Telescope during the 6-month reverberation-mapping campaign in 2014. Our model of t…