Results 1 to 10 of about 189,755 (181)

The Distribution of Quenched Galaxies in the Massive z = 0.87 Galaxy Cluster El Gordo

The Astrophysical Journal
El Gordo (ACT-CL J0102−4915) is a massive galaxy cluster with two major mass components at redshift z = 0.87. Using spectral energy distribution fitting results from JWST/NIRCam photometry, the fraction of quenched galaxies in this cluster was measured ...
Rachel Honor, Seth H. Cohen, Timothy Carleton, S. P. Willner, Maria del Carmen Polletta, Rogier A. Windhorst, Dan Coe, Christopher J. Conselice, Jose M. Diego, Simon P. Driver, Jordan C. J. D’Silva, Nicholas Foo, Brenda L. Frye, Norman A. Grogin, Nimish P. Hathi, Rolf A. Jansen, Patrick S. Kamieneski, Anton M. Koekemoer, Reagen Leimbach, Madeline A. Marshall, Rafael Ortiz III, Nor Pirzkal, Massimo Ricotti, Aaron S. G. Robotham, Michael J. Rutkowski, Russell E. Ryan Jr., Payaswini Saikia, Jake Summers, Christopher N. A. Willmer, Haojing Yan   +29 more
doaj   +2 more sources

Discrepancies between JWST Observations and Simulations of Quenched Massive Galaxies at z > 3: A Comparative Study with IllustrisTNG and ASTRID

The Astrophysical Journal
Recent JWST observations have uncovered an unexpectedly large population of massive quiescent galaxies at z  > 3. Using the cosmological simulations IllustrisTNG and ASTRID , we identify analogous galaxies and investigate their abundance, formation ...
Emma Jane Weller, Fabio Pacucci, Yueying Ni, Lars Hernquist, Minjung Park   +4 more
doaj   +2 more sources

On the Origin of Quenched but Gas-rich Regions at Kiloparsec Scales in Nearby Galaxies [PDF]

The Astrophysical Journal
We use resolved spectroscopy from MaNGA to investigate the significance of both local and global properties of galaxies to the cessation of star formation at kpc scales.
Tao Jing, Cheng Li
doaj   +2 more sources

The quenching time and timescale distribution of z~2 quiescent galaxies from precise colour distribution analysis

The Open Journal of Astrophysics
Understanding when and how galaxies quench their star formation is crucial for understanding the dominant physical processes at play. The spectral energy distribution (SED) of galaxies encodes significant information on their past histories: the relative
Vivienne Wild, Ho-Hin Leung, Adam Carnall, Maya Skarbinski   +3 more
doaj   +1 more source

Machine Learning Classification of COSMOS2020 Galaxies: Quiescent versus Star-forming

The Astrophysical Journal
Accurately distinguishing between quiescent and star-forming galaxies is essential for understanding galaxy evolution. Traditional methods, such as spectral energy distribution (SED) fitting, can be computationally expensive and may struggle to capture ...
Vahid Asadi, Nima Chartab, Akram Hasani Zonoozi, Hosein Haghi, Ghassem Gozaliasl, Aryana Haghjoo, Bahram Mobasher   +6 more
doaj   +1 more source

Photometric Objects Around Cosmic Webs (PAC). VII. Disentangling Mass and Environment Quenching with the Aid of Galaxy–Halo Connection in Simulations

The Astrophysical Journal
Star formation quenching in galaxies plays a crucial role in galaxy evolution and is believed to be driven primarily by galaxy mass and environment.
Yun Zheng, Kun Xu, Donghai Zhao, Y. P. Jing, Hongyu Gao, Xiaolin Luo, Ming Li   +6 more
doaj   +1 more source

Tracing evolutionary pathways of bar-driven quenching in local Universe disk galaxies

Astronomy & Astrophysics
Bars play an integral role in regulating star formation in spiral galaxies, from triggering central starbursts to driving quenching. The diverse star formation morphologies observed in local barred galaxies reflect different evolutionary stages of the ...
Renu D., Subramanian S., George K.
doaj   +1 more source

Dwarf Galaxies in the TNG50 Field: connecting their Star-formation Rates with their Environments

The Open Journal of Astrophysics
The dwarf galaxies comparable to the LMC and SMC, with stellar masses $7.5
Joy Bhattacharyya, Annika H.G. Peter, Alexie Leauthaud   +2 more
doaj   +1 more source

Double trouble: Two spectroscopically confirmed low-mass quiescent galaxies at z > 5 in overdensities

Astronomy & Astrophysics
We present the discovery of two low-mass, high-redshift quiescent galaxies, GS-z5-Q1 and COS-z5-Q1, using JWST NIRSpec spectroscopy alongside NIRCam and MIRI photometry.
Baker William M., Ito Kei, Valentino Francesco, Zhu Pengpei, Scarpe Gianluca, Gottumukkala Rashmi, Hjorth Jens, Barrufet Laia, Langeroodi Danial   +8 more
doaj   +1 more source

ELVES-Field: Isolated Dwarf Galaxy Quenched Fractions Rise below M∗ ≈ 107 M⊙

The Astrophysical Journal Letters
We use a new sample of low-mass ( M _*   10 ^9 M _⊙ . We find that, at higher dwarf masses ( M _⋆  ≳ 10 ^7 M _⊙ ), essentially all field dwarfs are star forming as has been found before. In contrast, at M _⋆  ≲ 10 ^7 M _⊙ , ∼30% of field dwarfs appear to
Scott G. Carlsten, Jiaxuan Li, Jenny E. Greene, Alex Drlica-Wagner, Shany Danieli   +4 more
doaj   +1 more source