Zobrazeno 1 - 10
of 192
pro vyhledávání: '"Galaxy nuclei"'
Publikováno v:
The Astrophysical Journal Letters, Vol 973, Iss 1, p L9 (2024)
Observations of tidal disruption events (TDEs) show signs of nitrogen enrichment reminiscent of other astrophysical sources such as active galactic nuclei and star-forming galaxies. Given that TDEs probe the gas from a single star, it is possible to
Externí odkaz:
https://doaj.org/article/abd73f0a36284f3eb04d06971c5da4ca
Autor:
Robert Stein, Ashish Mahabal, Simeon Reusch, Matthew Graham, Mansi M. Kasliwal, Marek Kowalski, Suvi Gezari, Erica Hammerstein, Szymon J. Nakoneczny, Matt Nicholl, Jesper Sollerman, Sjoert van Velzen, Yuhan Yao, Russ R. Laher, Ben Rusholme
Publikováno v:
The Astrophysical Journal Letters, Vol 965, Iss 2, p L14 (2024)
Optical surveys have become increasingly adept at identifying candidate tidal disruption events (TDEs) in large numbers, but classifying these generally requires extensive spectroscopic resources. Here we present tdescore , a simple binary photometri
Externí odkaz:
https://doaj.org/article/efb596792c5740438ef25f4cae116cd1
Publikováno v:
The Astrophysical Journal Letters, Vol 962, Iss 1, p L7 (2024)
Recent observations of changing-look active galactic nuclei (AGNs) hint at a frequency of accretion activity not fully explained by tidal disruption events (TDEs) stemming from relaxation processes in nuclear star clusters (NSCs), traditionally estim
Externí odkaz:
https://doaj.org/article/1f020cb41167413e90e307efc97fc790
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 204 (2024)
Scouring by supermassive black hole (SMBH) binaries is the most accepted mechanism for the formation of the cores seen in giant elliptical galaxies. However, an additional mechanism is required to explain the largest observed cores. Gravitational-wav
Externí odkaz:
https://doaj.org/article/1f965b1e0d9544cd9260486d2749b591
Autor:
Hannah Dykaar, Maria R. Drout, B. M. Gaensler, David L. Kaplan, Tara Murphy, Assaf Horesh, Akash Anumarlapudi, Dougal Dobie, Laura N. Driessen, Emil Lenc, Adam J. Stewart
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 2, p 104 (2024)
We present a systematic search for tidal disruption events (TDEs) using radio data from the Variables and Slow Transients (VAST) Pilot Survey conducted using the Australian Square Kilometre Array Pathfinder. Historically, TDEs have been identified us
Externí odkaz:
https://doaj.org/article/10cca728da444b24bda7747f9883b3d3
Autor:
Mark Dodici, Scott Tremaine
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 2, p 193 (2024)
Using the equations of motion from Hill’s problem, with added accelerations for different forms of dynamical friction, we provide the (to-date) broadest scale-free study of friction-driven binary formation in gaseous disks and stellar clusters. We
Externí odkaz:
https://doaj.org/article/bfdd8ddd4d7243adaf42bde31688c2bf
Autor:
Jared R. Davidson, Benjamin D. Boizelle, Jonelle L. Walsh, Aaron J. Barth, Emma Rasmussen, Andrew J. Baker, David A. Buote, Jeremy Darling, Luis C. Ho, Kyle M. Kabasares, Jonathan H. Cohn
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 1, p 127 (2024)
Dusty circumnuclear disks (CNDs) in luminous early-type galaxies (ETGs) show regular, dynamically cold molecular gas kinematics. For a growing number of ETGs, Atacama Large Millimeter/sub-millimeter Array (ALMA) CO imaging and detailed gas-dynamical
Externí odkaz:
https://doaj.org/article/ca0ad03336e14f73b21b820e74632f45
Autor:
Maximilian Häberle, N. Neumayer, A. Bellini, M. Libralato, C. Clontz, A. C. Seth, M. S. Nitschai, S. Kamann, M. Alfaro-Cuello, J. Anderson, S. Dreizler, A. Feldmeier-Krause, N. Kacharov, M. Latour, A. P. Milone, R. Pechetti, G. van de Ven, K. Voggel
Publikováno v:
The Astrophysical Journal, Vol 970, Iss 2, p 192 (2024)
Omega Centauri ( ω Cen) is the most massive globular cluster of the Milky Way. It is thought to be the nucleus of an accreted dwarf galaxy because of its high mass and its complex stellar populations. To decipher its formation history and study its
Externí odkaz:
https://doaj.org/article/c6a17bba19504e269f6ba9ad4101c6b3
Autor:
M. S. Nitschai, N. Neumayer, M. Häberle, C. Clontz, A. C. Seth, A. P. Milone, M. Alfaro-Cuello, A. Bellini, S. Dreizler, A. Feldmeier-Krause, T.-O. Husser, N. Kacharov, S. Kamann, M. Latour, M. Libralato, G. van de Ven, K. Voggel, Z. Wang
Publikováno v:
The Astrophysical Journal, Vol 970, Iss 2, p 152 (2024)
ω Centauri, the most massive globular cluster in the Milky Way, has long been suspected to be the stripped nucleus of a dwarf galaxy that fell into the Galaxy a long time ago. There is considerable evidence for this scenario including a large spread
Externí odkaz:
https://doaj.org/article/2167d54e3a23419ca207b8ddb4d708be
Publikováno v:
The Astronomical Journal, Vol 168, Iss 1, p 45 (2024)
Using the Systematically Measuring Ultra-Diffuse Galaxies and Sloan Digital Sky Survey catalogs and our own reprocessing of the Legacy Survey imaging, we investigate the properties of nuclear star clusters (NSCs) in galaxies having central surface br
Externí odkaz:
https://doaj.org/article/734a809300f647beb710ea963522bd64