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astro-ph.GA2021

Predictions for the X-ray circumgalactic medium of edge-on discs and spheroids

Anna Nica, Benjamin D. Oppenheimer, Robert A. Crain +5

We investigate how the X-ray circumgalactic medium (CGM) of present-day galaxies depends on galaxy morphology and azimuthal angle using mock observations generated from the EAGLE c…

astro-ph.SR2021★ 1 cited

NGC 1850 BH1 is another stripped-star binary masquerading as a black hole

Kareem El-Badry, Kevin Burdge

We show that the radial velocity-variable star in the black hole candidate NGC 1850 BH1 cannot be a normal subgiant, as was proposed, but is an overluminous…

astro-ph.GA2021★ 9 cited

Surveys of Clumps, Cores, and Condensations in the Cygnus X: II. Radio Properties of the Massive Dense Cores

Yuwei Wang, Keping Qiu, Yue Cao +3

We have carried out a high-sensitivity and high-resolution radio continuum study towards a sample of 47 massive dense cores (MDCs) in the Cygnus X star-forming complex using the Ka…

astro-ph.GA2021★ 22 cited

The DR21(OH) Trident -- Resolving the Massive Ridge into Three Entangled Fibers As the Initial Condition of Cluster Formation

Yue Cao, Keping Qiu, Qizhou Zhang +1

DR21(OH) ridge, the central part of a high-mass star and cluster forming hub-filament system, is resolved spatially and kinematically into three nearly parallel fibers (f1, f2, and…

astro-ph.HE2021★ 13 cited

Follow-up Observations of the Prolonged, super-Eddington, Tidal Disruption Event Candidate 3XMM~J150052.0+015452: the Slow Decline Continues

Dacheng Lin, Olivier Godet, Natalie A. Webb +7

The X-ray source 3XMM~J150052.0+015452 was discovered as a spectacular tidal disruption event candidate during a prolonged ( yrs) outburst (Lin et al. 2017). It exhibited uniq…

astro-ph.GA2021★ 2 cited

Optical light curves of light-weight supermassive black holes produced by the Zwicky Transient Facility Forced Photometry Service

Mariia Demianenko, Igor Chilingarian, Kirill Grishin +4

In this paper, we present an algorithm to correct optical light curves obtained using The Zwicky Transient Facility Forced Photometry Service and its application to the analysis of…

astro-ph.HE2021★ 53 cited

Evidence for a Compact Object in the Aftermath of the Extra-Galactic Transient AT2018cow

Dheeraj R. Pasham, Wynn C. G. Ho, William Alston +16

The brightest Fast Blue Optical Transients (FBOTs) are mysterious extragalactic explosions that may represent a new class of astrophysical phenomena. Their fast time to maximum bri…

astro-ph.GA2021★ 51 cited

Magnetic fields in star formation: a complete compilation of all the DCF estimations

Junhao Liu, Keping Qiu, Qizhou Zhang

The Davis-Chandrasekhar-Fermi (DCF) method provides an indirect way to estimate the magnetic field strength from statistics of magnetic field orientations. We compile all the previ…

astro-ph.GA2021★ 1 cited

Observational insights on the formation scenarios of giant low surface brightness galaxies

Anna Saburova, Igor Chilingarian, Anastasia Kasparova +4

Giant low surface brightness galaxies (gLSBGs) with the disk radii of up to 130 kpc represent a challenge for currently accepted theories of galaxy formation and evolution, because…

astro-ph.EP2021★ 73 cited

p-winds: an open-source Python code to model planetary outflows and upper atmospheres

Leonardo A. Dos Santos, Aline A. Vidotto, Shreyas Vissapragada +6

Atmospheric escape is considered to be one of the main channels for evolution in sub-Jovian planets, particularly in their early lives. While there are several hypotheses proposed…

astro-ph.GA2021★ 9 cited

Evolution and Kinematics of Protostellar Envelopes in the Perseus Molecular Cloud

Daniel J. Heimsoth, Ian W. Stephens, Hector G. Arce +3

We present a comprehensive analysis on the evolution of envelopes surrounding protostellar systems in the Perseus molecular cloud using data from the MASSES survey. We focus our at…

astro-ph.HE2021★ 13 cited

The morphology of the ejecta of SN 1987A at 31 years from 1150 to 10000 Å

Tuomas Kangas, Claes Fransson, Josefin Larsson +7

We present spectroscopy of the ejecta of SN 1987A in 2017 and 2018 from the Hubble Space Telescope and the Very Large Telescope, covering the wavelength range between and $1…

astro-ph.GA2021★ 15 cited

Methoxymethanol Formation Starting from CO-Hydrogenation

Jiao He, Mart Simons, Gleb Fedoseev +7

Methoxymethanol (CH3OCH2OH, MM) has been identified through gas-phase signatures in both high- and low-mass star-forming regions. This molecule is expected to form upon hydrogen ad…

astro-ph.CO2021★ 32 cited

The DESI -body Simulation Project I: Testing the Robustness of Simulations for the DESI Dark Time Survey

Cameron Grove, Chia-Hsun Chuang, Ningombam Chandrachani Devi +19

Analysis of large galaxy surveys requires confidence in the robustness of numerical simulation methods. The simulations are used to construct mock galaxy catalogs to validate data…

astro-ph.GA2021★ 17 cited

The Complete Local Volume Groups Sample -- IV. Star formation and gas content in group-dominant galaxies

Konstantinos Kolokythas, Sravani Vaddi, Ewan O'Sullivan +5

Using multi-band data we examine the star formation activity of the nearby group-dominant early-type galaxies of the Complete Local-volume Groups Sample (CLoGS), and the relation b…

astro-ph.SR2021★ 30 cited

Estimating fundamental parameters of nearby M dwarfs from SPIRou spectra

P. I. Cristofari, J. -F. Donati, T. Masseron +10

We present the results of a study aiming at retrieving the fundamental parameters of M dwarfs from spectra secured with SPIRou, the near-infrared high-resolution spectropolarimeter…

astro-ph.SR2021

MagAO observations of the binary microlens OGLE-2014-BLG-1050 prefer the higher-mass solution

Xiaojia Xie, Subo Dong, Wei Zhu +9

We report adaptive-optics (AO) follow-up imaging of OGLE-2014-BLG-1050, which is the second binary microlensing event with space-based parallax measurements. The degeneracy in micr…

astro-ph.CO2021★ 38 cited

The DES view of the Eridanus supervoid and the CMB Cold Spot

A. Kovács, N. Jeffrey, M. Gatti +119

The Cold Spot is a puzzling large-scale feature in the Cosmic Microwave Background temperature maps and its origin has been subject to active debate. As an important foreground str…

astro-ph.GA2021★ 30 cited

On the formation of massive quiescent galaxies with diverse morphologies in the TNG50 simulation

Minjung Park, Sandro Tacchella, Erica J. Nelson +7

Observations have shown that the star-formation activity and the morphology of galaxies are closely related, but the underlying physical connection is not well understood. Using th…

astro-ph.GA2021★ 45 cited

The Prevalence of Galaxy Overdensities Around UV-Luminous Lyman Emitters in the Epoch of Reionization

E. Leonova, P. A. Oesch, Y. Qin +19

Before the end of the epoch of reionization, the Hydrogen in the Universe was predominantly neutral. This leads to a strong attenuation of Ly lines of galaxies in th…

astro-ph.HE2021

Impact of Massive Binary Star and Cosmic Evolution on Gravitational Wave Observations II: Double Compact Object Rates and Properties

Floor S. Broekgaarden, Edo Berger, Simon Stevenson +9

Making the most of the rapidly increasing population of gravitational-wave detections of black hole (BH) and neutron star (NS) mergers requires comparing observations with populati…

astro-ph.SR2021★ 38 cited

ATOMIUM: ALMA tracing the origins of molecules in dust forming oxygen rich M-type stars: Motivation, sample, calibration, and initial results

C. A. Gottlieb, L. Decin, A. M. S. Richards +33

This overview paper presents ATOMIUM, a Large Programme in Cycle 6 with the Atacama Large Millimeter-submillimeter Array (ALMA). The goal of ATOMIUM is to understand the dynamics a…

astro-ph.EP2021★ 16 cited

Stepsize errors in the -body problem: discerning Mercury's true possible long-term orbits

David M. Hernandez, Richard E. Zeebe, Sam Hadden

Numerical integrations of the Solar System have been carried out for decades. Their results have been used, for example, to determine whether the Solar System is chaotic, whether M…

astro-ph.HE2021★ 32 cited

Changing-look event in NGC 3516: continuum or obscuration variability?

Missagh Mehdipour, Gerard A. Kriss, Laura W. Brenneman +6

The Seyfert-1 galaxy NGC 3516 has undergone major spectral changes in recent years. In 2017 we obtained Chandra, NuSTAR, and Swift observations during its new low-flux state. Using…