Results 101 to 110 of about 23,810 (131)

H i Observations of Giant Low Surface Brightness Galaxies

The Astrophysical Journal
Giant low surface brightness (gLSB) galaxies are galaxies with extremely extended, faint, optical disks over 50 kpc in radius and have high total masses, which can reach 10 ^12 M _⊙ .
Philip Lah, Nikhil Arora, Ivan Yu. Katkov, Joseph D. Gelfand, Anna S. Saburova, Igor V. Chilingarian, Ivan Gerasimov, Damir Gasymov   +7 more
doaj   +1 more source

Occurrence Rates of Accreting Companions from a New Method for Computing Emission-line Survey Sensitivity: Application to the Hα Giant Accreting Protoplanet Survey

The Astronomical Journal
A key scientific goal of exoplanet surveys is to characterize the underlying population of planets in the local galaxy. In particular, the properties of accreting proto planets can inform the rates and physical processes of planet formation. We develop a
Cailin Plunkett, Katherine B. Follette, Gabriel-Dominique Marleau, Eric L. Nielsen   +3 more
doaj   +1 more source

McFACTS III: Compact Binary Mergers from Active Galactic Nucleus Disks over an Entire Synthetic Universe

The Astrophysical Journal
The active galactic nucleus (AGN) channel for the formation of binary black hole (BBH) mergers has been previously studied as a potential formation channel for the merging compact binaries observed by the LIGO–Virgo–KAGRA (LVK) scientific collaboration ...
Vera Delfavero, K. E. Saavik Ford, Barry McKernan, Harrison E. Cook, Kaila Nathaniel, Jake Postiglione, Shawn Ray, Emily McPike, Richard O’Shaughnessy   +8 more
doaj   +1 more source

Anisotropy of Core-collapse Supernovae Effected by the Disks of Active Galactic Nuclei

The Astrophysical Journal
Active galactic nuclei (AGN) disks provide dense environments that influence star formation, evolution, and migration. In AGN disks, pressure gradients and migration accelerations could create the anisotropy of the core-collapse supernovae that occurs ...
Jiao-Zhen She, Tong Liu, Bao-Quan Huang, Yun-Feng Wei, Fu-Lin Li, Jin-Jun Geng, Xue-Feng Wu   +6 more
doaj   +1 more source

Stellar CoRGI in MaNGA: Stellar Counterrotating Galaxies Identified in the MaNGA Survey

The Astrophysical Journal Supplement Series
Stellar counterrotating (CR) galaxies are systems hosting two large-scale stellar components rotating in opposite directions—a main, preexisting galaxy body with an older stellar population and a younger CR stellar disk likely formed from externally ...
Damir Gasymov, Ivan Yu. Katkov, Evgenii V. Rubtsov, Anna S. Saburova, Alexei Yu. Kniazev, Joseph D. Gelfand, Olga K. Sil’chenko, Igor V. Chilingarian, Alexei V. Moiseev, Anastasia V. Kasparova, Anatoly V. Zasov   +10 more
doaj   +1 more source

Circumbinary Disk Spectra Irradiated by Two Central Accretion Disks in a Binary Black Hole System

The Astrophysical Journal
We study the effect of irradiation from two accretion disks (minidisks) around respective black holes of stellar-to-intermediate masses in a circular binary on the spectrum of a circumbinary disk (CBD) surrounding them. We assume the CBD to be a standard
Yunewoo Lee, Atsuo T. Okazaki, Kimitake Hayasaki   +2 more
doaj   +1 more source

Radiation Hydrodynamic Simulations of Massive Stars in Gas-rich Environments: Accretion of AGN Stars Suppressed by Thermal Feedback

The Astrophysical Journal
Massive stars may form in or be captured into active galactic nuclei (AGN) disks. Recent 1D studies employing stellar-evolution codes have demonstrated the potential for rapid growth of such stars through accretion up to a few hundred solar masses.
Yi-Xian Chen, Yan-Fei Jiang, Jeremy Goodman, Douglas N. C. Lin   +3 more
doaj   +1 more source

Late-time X-Ray Observations of the Jetted Tidal Disruption Event AT2022cmc: The Relativistic Jet Shuts Off

The Astrophysical Journal
The tidal disruption event (TDE) AT2022cmc represents the fourth known example of a relativistic jet produced by the tidal disruption of a stray star, providing a unique probe of the formation and evolution of relativistic jets in otherwise dormant ...
T. Eftekhari, A. Tchekhovskoy, K. D. Alexander, E. Berger, R. Chornock, T. Laskar, R. Margutti, Y. Yao, Y. Cendes, S. Gomez, A. Hajela, D. R. Pasham   +11 more
doaj   +1 more source

Discovery of a Luminosity-dependent Continuum Lag in NGC 4151 from Photometric and Spectroscopic Continuum Reverberation Mapping

The Astrophysical Journal
Accretion onto supermassive black holes (SMBHs) powers active galactic nuclei (AGNs) and drives feedback that shapes galaxy evolution. Constraining AGN accretion disk structure is therefore essential for understanding black hole growth and feedback ...
Hai-Cheng Feng, Sha-Sha Li, Mouyuan Sun, Ciro Pinto, Shuying Zhou, Yerong Xu, J. M. Bai, Elena Dalla Bontà, ZhongNan Dong, Neeraj Kumari, Jiaqi Lin, H. T. Liu, Kai-Xing Lu, Bin Ma, Ji-Rong Mao, Emanuele Nardini, Enrico Piconcelli, Fabio Pintore, Jian-Guo Wang, Ding-Rong Xiong   +19 more
doaj   +1 more source

Saturated Luminosity Of Slim Accretion Disks In Anrrow Line Seyfert 1 Galaxies

, 2018
Classical model of slim accretion disks predicts saturated luminosity which only linearly proportional to the accreting black hole mass. We should the evidence for this luminosity from the Lijiang reverberation mapping campaigns of narrow line Seyfert 1 galaxies. This lends an opportunity of using super-Eddington accreting massive black holes as cosmic
openaire   +1 more source