Showing 2020 · astro-ph.GAShow all

78 papers · 2 filters

astro-ph.GA2020★ 84 cited

Dust polarized emission observations of NGC 6334; BISTRO reveals the details of the complex but organized magnetic field structure of the high-mass star-forming hub-filament network

D. Arzoumanian, R. Furuya, T. Hasegawa +145

[Abridged] Filaments and hubs have received special attention recently thanks to studies showing their role in star formation. While the column density and velocity structures of b…

astro-ph.GA2020★ 42 cited

Gaia GraL: Gaia DR2 Gravitational Lens Systems. VI. Spectroscopic Confirmation and Modeling of Quadruply-Imaged Lensed Quasars

D. Stern, S. G. Djorgovski, A. Krone-Martins +23

Combining the exquisite angular resolution of Gaia with optical light curves and WISE photometry, the Gaia Gravitational Lenses group (GraL) uses machine learning techniques to ide…

astro-ph.GA2020★ 7 cited

A Redshift for the First Einstein Ring, MG 1131+0456

Daniel Stern, Dominic Walton

MG 1131+0456 is a radio-selected gravitational lens, and is the first known Einstein ring. Discovered in 1988, the system consists of a bright radio source imaged into a ring and t…

astro-ph.GA2020★ 28 cited

A Statistical Estimation of the Occurrence of Extraterrestrial Intelligence in the Milky Way Galaxy

Xiang Cai, Jonathan H. Jiang, Kristen A. Fahy +1

In the field of Astrobiology, the precise location, prevalence and age of potential extraterrestrial intelligence (ETI) have not been explicitly explored. Here, we address these in…

astro-ph.GA2020★ 28 cited

A Large Population of Luminous Active Galactic Nuclei Lacking X-ray Detections: Evidence for Heavy Obscuration?

Christopher M. Carroll, Ryan C. Hickox, Alberto Masini +5

We present a large sample of infrared-luminous candidate active galactic nuclei (AGNs) that lack X-ray detections in Chandra, XMM-Newton, and NuSTAR fields. We selected all optical…

astro-ph.GA2020★ 27 cited

Observations of magnetic fields surrounding LkH 101 taken by the BISTRO survey with JCMT-POL-2

Nguyen Bich Ngoc, Pham Ngoc Diep, Harriet Parsons +146

We report the first high spatial resolution measurement of magnetic fields surrounding LkH 101, a part of the Auriga-California molecular cloud. The observations were taken with…

astro-ph.GA2020★ 22 cited

The Relativistic Jet Orientation and Host Galaxy of the Peculiar Blazar PKS 1413+135

A. C. S. Readhead, V. Ravi, I. Liodakis +26

PKS 1413+135 is one of the most peculiar blazars known. Its strange properties led to the hypothesis almost four decades ago that it is gravitationally lensed by a mass concentrati…

astro-ph.GA2020★ 112 cited

Gaia Early Data Release 3: Acceleration of the solar system from Gaia astrometry

Gaia Collaboration, S. A. Klioner, F. Mignard +414

Context. Gaia Early Data Release 3 (Gaia EDR3) provides accurate astrometry for about 1.6 million compact (QSO-like) extragalactic sources, 1.2 million of which have the best-quali…

astro-ph.GA2020★ 50 cited

Probing Cosmic Reionization and Molecular Gas Growth with TIME

Guochao Sun, Tzu-Ching Chang, Bade D. Uzgil +23

Line intensity mapping (LIM) provides a unique and powerful means to probe cosmic structures by measuring the aggregate line emission from all galaxies across redshift. The method…

astro-ph.GA2020★ 27 cited

ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Detection of extremely high density compact structure of prestellar cores and multiple substructures within

Dipen Sahu, Sheng-Yuan Liu, Tie Liu +38

Prestellar cores are self-gravitating dense and cold structures within molecular clouds where future stars are born. They are expected, at the stage of transitioning to the protost…

astro-ph.GA2020★ 46 cited

A machine learning approach to galaxy properties: joint redshift-stellar mass probability distributions with Random Forest

S. Mucesh, W. G. Hartley, A. Palmese +72

We demonstrate that highly accurate joint redshift-stellar mass probability distribution functions (PDFs) can be obtained using the Random Forest (RF) machine learning (ML) algorit…

astro-ph.GA2020★ 219 cited

Gaia Early Data Release 3: Summary of the contents and survey properties

Gaia Collaboration, A. G. A Brown, A. Vallenari +423

We present the early installment of the third Gaia data release, Gaia EDR3, consisting of astrometry and photometry for 1.8 billion sources brighter than magnitude 21, complemented…

astro-ph.GA2020★ 37 cited

A Spitzer survey of Deep Drilling Fields to be targeted by the Vera C. Rubin Observatory Legacy Survey of Space and Time

M. Lacy, J. A. Surace, D. Farrah +60

The Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) will observe several Deep Drilling Fields (DDFs) to a greater depth and with a more rapid cadence than the main…

astro-ph.GA2020★ 43 cited

A Catalog of 220 Offset and Dual AGNs: Increased AGN Activation in Major Mergers and Separations under 4 kpc

Aaron Stemo, Julia M. Comerford, R. Scott Barrows +4

During galaxy mergers, gas and dust is driven towards the centers of merging galaxies, triggering enhanced star formation and supermassive black hole (SMBH) growth. Theory predicts…

astro-ph.GA2020★ 79 cited

New Horizons Observations of the Cosmic Optical Background

Tod R. Lauer, Marc Postman, Harold A. Weaver +26

We used existing data from the New Horizons LORRI camera to measure the optical-band () sky brightness within seven high galactic latitude fields. T…

astro-ph.GA2020★ 10 cited

The CARMA-NRO Orion Survey: Filament Formation via Collision-Induced Magnetic Reconnection -- The Stick in Orion A

Shuo Kong, Volker Ossenkopf-Okada, Héctor G. Arce +13

A unique filament is identified in the {\it Herschel} maps of the Orion A giant molecular cloud. The filament, which, we name the Stick, is ruler-straight and at an early evolution…

astro-ph.GA2020★ 83 cited

BAT AGN Spectroscopic Survey-XX: Molecular Gas in Nearby Hard X-ray Selected AGN Galaxies

Michael J. Koss, Benjamin Strittmatter, Isabella Lamperti +23

We present the host galaxy molecular gas properties of a sample of 213 nearby (0.01<z< 0.05) hard X-ray selected AGN galaxies, drawn from the 70-month catalog of Swift-BAT, with 20…

astro-ph.GA2020★ 51 cited

ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP) II. Survey overview: a first look at 1.3 mm continuum maps and molecular outflows

Somnath Dutta, Chin-Fei Lee, Tie Liu +32

Planck Galactic Cold Clumps (PGCCs) are contemplated to be the ideal targets to probe the early phases of star formation. We have conducted a survey of 72 young dense cores inside…

astro-ph.GA2020★ 308 cited

The third realization of the International Celestial Reference Frame by very long baseline interferometry

P. Charlot, C. S. Jacobs, D. Gordon +17

A new realization of the International Celestial Reference Frame (ICRF) is presented based on the work achieved by a working group of the International Astronomical Union (IAU) man…

astro-ph.GA2020★ 35 cited

Fast Outflows in Hot Dust-Obscured Galaxies with Keck/NIRES

Luke Finnerty, Kirsten Larson, B. T. Soifer +10

We present rest-frame optical spectroscopic observations of 24 Hot Dust-Obscured Galaxies (Hot DOGs) at redshifts 1.7-4.6 with KECK/NIRES. Our targets are selected based on their e…

astro-ph.GA2020★ 65 cited

Bayesian AGN Decomposition Analysis for SDSS Spectra: A Correlation Analysis of [OIII] Outflow Kinematics with AGN and Host Galaxy Properties

Remington O. Sexton, William Matzko, Nicholas Darden +2

We present Bayesian AGN Decomposition Analysis for SDSS Spectra (BADASS), an open source spectral analysis code designed for automatic detailed deconvolution of AGN and host galaxy…

astro-ph.GA2020★ 5 cited

The End of Galaxy Surveys

Jason Rhodes, Eric Huff, Daniel Masters +1

For nearly a century, imaging and spectroscopic surveys of galaxies have given us information about the contents of the universe. We attempt to define the logical endpoint of such…

astro-ph.GA2020★ 26 cited

The Dust-to-Gas Ratio and the Role of Radiation Pressure in Luminous, Obscured Quasars

Hyunsung D. Jun, Roberto J. Assef, Christopher M. Carroll +5

The absence of high Eddington ratio, obscured Active Galactic Nuclei (AGN) in local () samples of moderate luminosity AGN has generally been explained to result from…

astro-ph.GA2020★ 48 cited

Space Telescope and Optical Reverberation Mapping Project. XII. Broad-Line Region Modeling of NGC 5548

P. R. Williams, A. Pancoast, T. Treu +155

We present geometric and dynamical modeling of the broad line region for the multi-wavelength reverberation mapping campaign focused on NGC 5548 in 2014. The dataset includes photo…