Results 61 to 70 of about 4,901,298 (173)

ADF22-WEB: Detection of a Molecular Gas Reservoir in a Massive Quiescent Galaxy Located in a z ≈ 3 Protocluster Core

The Astrophysical Journal Letters
We present a study of the molecular gas reservoirs and dust contents in three quiescent galaxies (QGs) located in the core of the z = 3.09 SSA22 protocluster.
Hideki Umehata, Mariko Kubo, Kouichiro Nakanishi   +2 more
doaj   +1 more source

The JWST EXCELS Survey: Insights into the Nature of Quenching at Cosmic Noon

The Astrophysical Journal
We study 24 massive quiescent galaxies with $\mathrm{log}{{M}}_{* }/{{M}}_{\odot }\gt 10$ at 1 
Maya Skarbinski, Kate Rowlands, Katherine Alatalo, Vivienne Wild, Adam C. Carnall, Omar Almaini, David Maltby, Thomas de Lisle, Timothy Heckman, Ryan Begley, Fergus Cullen, James S. Dunlop, Guillaume Hewitt, Ho-Hin Leung, Derek McLeod, Ross McLure, Justin Atsushi Otter, Pallavi Patil, Andreea Petric, Alice E. Shapley, Struan Stevenson, Elizabeth Taylor   +21 more
doaj   +1 more source

Caught in the Act of Quenching? -- A Population of Post-Starburst Ultra-Diffuse Galaxies

The Open Journal of Astrophysics
We report the discovery of post-starburst ultra-diffuse galaxies (UDGs), identified through spectroscopic analysis with KCWI at the Keck II Telescope. Our analysis is based on a sample of 44 candidate UDGs selected from the Systematically Measuring Ultra-
Loraine Sandoval Ascencio, M. C. Cooper, Dennis Zaritsky, Richard Donnerstein, Donghyeon J. Khim, Devontae C. Baxter   +5 more
doaj   +1 more source

SQuIGG E: Buried Star Formation Cannot Explain the Rapidly Fading CO(2–1) Luminosity in Massive, z ∼ 0.7 Post-starburst Galaxies

The Astronomical Journal
Observational and theoretical studies have long held that rapid gas consumption in starbursts is responsible for the formation of the most massive quiescent galaxies at high redshift.
David J. Setton, Justin S. Spilker, Rachel Bezanson, Katherine A. Suess, Jenny E. Greene, Andy D. Goulding, Elia Cenci, Vincenzo R. D’Onofrio, Robert Feldmann, Mariska Kriek, Anika Kumar, Yuanze Luo, Desika Narayanan, Margaret E. Verrico, Pengpei Zhu   +14 more
doaj   +1 more source

The Delay Time Distribution of Tidal Disruption Events

The Astrophysical Journal
Tidal disruption events (TDEs) can be observed when stars get too close to supermassive black holes and are torn apart and accreted. The delay time distribution of TDEs, or rate of TDEs as a function of time since a burst of star formation, can be used ...
Margaret Shepherd, K. Decker French, Nicholas C. Stone, Nicholas Earl, Denyz Melchor, Teddy R. Smith, Jean Somalwar, Odelia Teboul, Margaret E. Verrico   +8 more
doaj   +1 more source

Unveiling the evolutionary history of local post-starburst galaxies through careful Bayesian modelling of their spectra

When we gaze upon the night sky into the stars in the Milky Way, it seems that the cosmos is constant, at least in the timescale of a lifetime. However, as our telescopes continued to improve, we have discovered that galaxies are instead dynamic systems,
Leung, Ho-Hin
core   +1 more source

Clocking the Evolution of Post-starburst Galaxies: Methods and First Results [PDF]

The Astrophysical Journal, 2018
Abstract Detailed modeling of the recent star formation histories (SFHs) of post-starburst (or “E+A”) galaxies is impeded by the degeneracy between the time elapsed since the starburst ended (post-burst age), the fraction of stellar mass produced in the burst (burst strength), and the burst duration.
K. Decker French, Yujin Yang, Ann I. Zabludoff, Christy A. Tremonti   +3 more
openaire   +2 more sources

Measuring the star formation rate density from CNOC2 [PDF]

, 2006
This thesis charts the evolution of the Universal Star Formation Rate Density (SFRD) across the redshift range 0.2 < z < 0.6, using the 2nd Canadian Network for Observational Cosmology Survey (CN0C2).
Whitaker, Richard James
core  

Massive post-starburst galaxies at z > 1 are compact proto-spheroids [PDF]

, 2017
We investigate the relationship between the quenching of star formation and the structural transformation of massive galaxies, using a large sample of photometrically-selected poststarburst galaxies in the UKIDSS UDS field.
Almaini, Omar, James S. Dunlop, Nina A. Hatch, McLure, Ross J., Omar Almaini, Chris Simpson, Dunlop, James S., Hatch, Nina A., Rowlands, Kate, William G. Hartley, David T. Maltby, Hartley, William G., Kate Rowlands, Maltby, David T., Vivienne Wild, Simpson, Chris, Wild, Vivienne, Dunlop, James, Ross J. McLure   +18 more
core   +1 more source

No Metallicity Preference in Fast Radio Burst Host Galaxies

The Astrophysical Journal Letters
Fast radio bursts (FRBs) are millisecond-duration extragalactic radio transients of unknown origin, and studying their host galaxies could offer clues to constrain progenitor models.
Shotaro Yamasaki, Tetsuya Hashimoto, Haruka Kusakabe, Tomotsugu Goto   +3 more
doaj   +1 more source