Zobrazeno 1 - 10
of 2 774
pro vyhledávání: '"early-type galaxies"'
Autor:
Pieter van Dokkum, Charlie Conroy
Publikováno v:
The Astrophysical Journal Letters, Vol 973, Iss 1, p L32 (2024)
The stellar initial mass function (IMF) is thought to be bottom heavy in the cores of the most massive galaxies, with an excess of low-mass stars compared to the Milky Way. However, studies of the kinematics of quiescent galaxies at 2 < z < 5 find M
Externí odkaz:
https://doaj.org/article/03ce657a651c4ebfaf703bf298f12a54
Publikováno v:
The Astrophysical Journal Letters, Vol 965, Iss 2, p L19 (2024)
van Dokkum et al. reported the discovery of JWST-ER1, a strong lensing object at redshift z ≈ 2, using data from the James Webb Space Telescope. The lens mass within the Einstein ring is 5.9 times higher than the expected stellar mass from a Chabri
Externí odkaz:
https://doaj.org/article/99fcbb2a55564798a2692f35e7975da8
Autor:
Bret D. Lehmer, Kristen Garofali, Breanna A. Binder, Francesca Fornasini, Neven Vulic, Andreas Zezas, Ann Hornschemeier, Margaret Lazzarini, Hannah Moon, Toni Venters, Daniel Wik, Mihoko Yukita, Matteo Bachetti, Javier A. García, Brian Grefenstette, Kristin Madsen, Kaya Mori, Daniel Stern
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 10 (2023)
We construct simulated galaxy data sets based on the High Energy X-ray Probe (HEX-P) mission concept to demonstrate the significant advances in galaxy science that will be yielded by the HEX-P observatory. The combination of high spatial resolution i
Externí odkaz:
https://doaj.org/article/ea6ff892a3784b9eb4699285b4c0d3bd
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 1, p 46 (2024)
In this paper, we present a statistical study of the [C ii ] 158 μ m line and the CO(1−0) emission for a sample of ∼200 local and high- z (32 sources with z > 1) galaxies with very different physical conditions. We explore the correlation betwee
Externí odkaz:
https://doaj.org/article/7a1fe6f1225e4ef789e78aa4b0d1a0ba
Autor:
Jonathan H. Cohn, Maeve Curliss, Jonelle L. Walsh, Kyle M. Kabasares, Benjamin D. Boizelle, Aaron J. Barth, Karl Gebhardt, Kayhan Gültekin, David A. Buote, Jeremy Darling, Andrew J. Baker, Luis C. Ho
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 179 (2024)
We present 0.″22 resolution CO(2–1) observations of the circumnuclear gas disk in the local compact galaxy NGC 384 with the Atacama Large Millimeter/submillimeter Array (ALMA). While the majority of the disk displays regular rotation with project
Externí odkaz:
https://doaj.org/article/45c9291b24aa436599943a79218bfffe
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 124 (2024)
Lenticular galaxies (S0s) in the local Universe are generally absent of recent star formation and lack molecular gas. In this paper, we investigate one massive ( M _* ∼ 5 × 10 ^10 M _⊙ ) star-forming S0, PGC 39535, with the Northern Extended Mil
Externí odkaz:
https://doaj.org/article/35c2f7220b1a4f32b31667c3f5ec0d5e
Autor:
Yu-zhong Wu, Wei Zhang
Publikováno v:
The Astronomical Journal, Vol 168, Iss 5, p 226 (2024)
We derive a sample of 114 Baldwin–Phillips–Terlevich-diagram star-forming and Wide-field Infrared Survey Explorer (WISE) low-star-formation-rate early-type galaxies (ETGs) by utilizing the criterion W2 − W3 < 2.5 (where W2 and W3 are the wavele
Externí odkaz:
https://doaj.org/article/40256ac66da04683843bcdacd908cad9
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 299 (2024)
The most massive early-type galaxies (ETGs) are known to form through numerous galaxy mergers. Thus, it is intriguing to study whether their formation in low-density environments, where nearby companions are almost absent, is associated with mergers,
Externí odkaz:
https://doaj.org/article/d0fc77c4770544ab92bfaa30012918ae
Autor:
Fujia Li, Enci Wang, Ming Zhu, Ying-jie Peng, Jing Wang, Chuan-Peng Zhang, Zesen Lin, Yu Rong, Hong-xin Zhang, Xu Kong
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 238 (2024)
We analyze the properties of a rare population, the strongly bulge-dominated early-type galaxies (sBDEs) with significant H i gas, using the databases from the FAST All Sky H i survey (FASHI) and the Arecibo Legacy Fast ALFA (ALFALFA) survey. We sele
Externí odkaz:
https://doaj.org/article/10c3638a172742179c9b932db9b627ad
Publikováno v:
The Astronomical Journal, Vol 168, Iss 5, p 197 (2024)
A gaseous counterrotating galaxy is a galaxy containing a gas component with opposite angular momentum to the main stellar disk. The counterrotating gas provides direct evidence for the accretion of external material, a key aspect in hierarchical gal
Externí odkaz:
https://doaj.org/article/9d9c231adfd1498792486a4176c5d9e2