Results 31 to 40 of about 14,525 (205)

Pegasus W: An Ultrafaint Dwarf Galaxy Outside the Halo of M31 Not Quenched by Reionization

The Astrophysical Journal, 2023
We report the discovery of an ultrafaint dwarf (UFD) galaxy, Pegasus W, located on the far side of the Milky Way–M31 system and outside the virial radius of M31.
Kristen B. W. McQuinn, Yao-Yuan Mao, Matthew R. Buckley, David Shih, Roger E. Cohen, Andrew E. Dolphin   +5 more
doaj   +1 more source

Signatures of quenching in dwarf galaxies in local galaxy clusters

Astronomy & Astrophysics, 2021
17 pages, 16 figures, accepted for publication in A& ...
Janz, Joachim, Salo, Heikki, Su, Alan H., Venhola, Aku   +3 more
openaire   +3 more sources

Rest-frame Near-infrared Radial Light Profiles up to z = 3 from JWST/NIRCam: Wavelength Dependence of the Sérsic Index

The Astrophysical Journal, 2023
We examine the wavelength dependence of radial light profiles based on Sérsic index n measurements of 1067 galaxies with M _* ≥ 10 ^9.5 M _⊙ and in the redshift range 0.5 < z < 3. The sample and rest-frame optical light profiles are drawn from the Cosmic
Marco Martorano, Arjen van der Wel, Eric F. Bell, Marijn Franx, Katherine E. Whitaker, Angelos Nersesian, Sedona H. Price, Maarten Baes, Katherine A. Suess, Erica J. Nelson, Tim B. Miller, Rachel Bezanson, Gabriel Brammer   +12 more
doaj   +1 more source

AGN Jet-induced Feedback in Galaxies. II. Galaxy colours from a multicloud simulation [PDF]

, 2009
We study the feedback from an AGN on stellar formation within its host galaxy, mainly using one high resolution numerical simulation of the jet propagation within the interstellar medium of an early-type galaxy. In particular, we show that in a realistic
A. D. Romeo, Antonuccio-Delogu, Baek, Baldwin, Benson, Bildfell, Bonnor, Borch, Bower, Bower, Bruzual, Bundy, C. Tortora, Cattaneo, Cowie, Croton, De Lucia, Dekel, Di Matteo, Ebert, Falle, Fryxell, Granato, Granato, Hasinger, Hester, Iliev, Inoue, J. Silk, Kaiser, Kauffmann, Kauffmann, Kaviraj, Kaviraj, Kaviraj, Kaviraj, Kennicutt, Khalatyan, Krause, Liu, Martin, Martin, Martin, Matković, Nagashima, Nandra, Nelan, Panter, Perucho, Perucho, Prugniel, Rawle, Romeo, S. Kaviraj, Salim, Saxton, Schawinski, Schawinski, Schawinski, Scheuer, Schmidt, Schmidt, Shabala, Shapiro, Shen, Silk, Silverman, Springel, Springel, Sutherland, Sutherland, Thomas, Tortora, Trager, U. Becciani, V. Antonuccio-Delogu, Yi   +76 more
core   +2 more sources

ΣSFR–M ∗ Diagram: A Valuable Galaxy Evolution Diagnostic to Complement (s)SFR–M ∗ Diagrams

The Astrophysical Journal, 2023
The specific star formation rate (sSFR) is commonly used to describe the level of galaxy star formation (SF) and to select quenched galaxies. However, since it is a relative measure of the young-to-old population, an ambiguity in its interpretation may ...
Samir Salim, Sandro Tacchella, Chandler Osborne, S. M. Faber, Janice C. Lee, Sara L. Ellison   +5 more
doaj   +1 more source

MOSFIRE Spectroscopy of Quiescent Galaxies at 1.5 < z < 2.5. II - Star Formation Histories and Galaxy Quenching [PDF]

, 2019
We investigate the stellar populations for a sample of 24 quiescent galaxies at 1.5 < z < 2.5 using deep rest-frame optical spectra obtained with Keck MOSFIRE. By fitting templates simultaneously to the spectroscopic and photometric data, and exploring a
Belli, Sirio, Ellis, Richard S., Newman, Andrew B.   +2 more
core   +2 more sources

Star formation quenching in massive galaxies [PDF]

Nature Astronomy, 2018
Understanding how and why star formation turns off in massive galaxies is a major challenge for studies of galaxy evolution. Many theoretical explanations have been proposed, but a definitive consensus is yet to be reached.
Man A., Belli S.
openaire   +4 more sources

AEGIS: New Evidence Linking Active Galactic Nuclei to the Quenching of Star Formation [PDF]

, 2007
Utilizing Chandra X-ray observations in the All-wavelength Extended Groth Strip International Survey (AEGIS) we identify 241 X-ray selected Active Galactic Nuclei (AGNs, L > 10^{42} ergs/s) and study the properties of their host galaxies in the range 0.4
Alison Coil, Alonso-Herrero A., Antonis Georgakakis, Bower R. G., Cattaneo A., Christopher J. Conselice, Christy M. Pierce, Cooper M. C., Elise Laird, Ferrarese L., Jeff A. Newman, Joel R. Primack, Kevin Bundy, Kirpal Nandra, Martin D. C., Michael C. Cooper, Nandra K., Renbin Yan, Richard S. Ellis, Salim S., Sandra M. Faber, Schawinski K., Silk J.   +22 more
core   +2 more sources

Bar quenching in gas-rich galaxies [PDF]

Astronomy & Astrophysics, 2018
Galaxy surveys have suggested that rapid and sustained decrease in the star-formation rate (SFR), “quenching”, in massive disk galaxies is frequently related to the presence of a bar. Optical and near-IR observations reveal that nearly 60% of disk galaxies in the local universe are barred, thus it is important to understand the relationship between ...
Khoperskov, S., Haywood, M., Di Matteo, P., Lehnert, M. D., Combes, F.   +4 more
openaire   +4 more sources

Spatially Resolved Stellar Populations of 0.3 < z < 6.0 Galaxies in WHL 0137–08 and MACS 0647+70 Clusters as Revealed by JWST: How Do Galaxies Grow and Quench over Cosmic Time?

The Astrophysical Journal, 2023
We study the spatially resolved stellar populations of 444 galaxies at 0.3 < z < 6.0 in two clusters (WHL 0137–08 and MACS 0647+70) and a blank field, combining imaging data from the Hubble Space Telescope and JWST to perform spatially resolved spectral ...
Abdurro’uf, Dan Coe, Intae Jung, Henry C. Ferguson, Gabriel Brammer, Kartheik G. Iyer, Larry D. Bradley, Pratika Dayal, Rogier A. Windhorst, Adi Zitrin, Ashish Kumar Meena, Masamune Oguri, Jose M. Diego, Vasily Kokorev, Paola Dimauro, Angela Adamo, Christopher J. Conselice, Brian Welch, Eros Vanzella, Tiger Yu-Yang Hsiao, Xinfeng Xu, Namrata Roy, Celia R. Mulcahey   +22 more
doaj   +1 more source