Results 21 to 30 of about 189,755 (181)

Shape asymmetry : a morphological indicator for automatic detection of galaxies in the post-coalescence merger stages [PDF]

, 2016
MMP and VW acknowledge support from the European Career Reintegration Grant Phiz-Ev (P.I. VW). VW, KR and JM-A acknowledge support from the European Research Council Starting Grant SEDMorph (P.I. VW).
Wild, V., Rowlands, K., Walcher, C. J., Mendez Abreu, Jairo, Villforth, Carolin, Villforth, C., Mendez-Abreu, J., Johansson, P. H., Rowlands, Kate Elizabeth, Johansson, P.~H., Hewlett, T., Walcher, C.~J., Hewlett, Tim, Pawlik, Milena, Wild, Vivienne, Pawlik, M.~M., Pawlik, M. M., Villforth, C.; id_orcid, Wild, Vivienne; id_orcid   +18 more
core   +1 more source

Investigating the Dominant Environmental Quenching Process in UVCANDELS/COSMOS Groups

The Astrophysical Journal, 2023
We explore how the fraction of quenched galaxies changes in groups of galaxies with respect to the distance to the center of the group, redshift, and stellar mass to determine the dominant process of environmental quenching in 0.2 < z < 0.8 groups.
Bonnabelle Zabelle, Claudia Scarlata, Vihang Mehta, Harry I. Teplitz, Marc Rafelski, Xin Wang, Ben Sunnquist, Laura Prichard, Norman Grogin, Anton Koekemoer, Rogier Windhorst, Michael Rutkowski, Anahita Alavi, Nima Chartab, Christopher J. Conselice, Y. Sophia Dai, Eric Gawiser, Mauro Giavalisco, Pablo Arrabal Haro, Nimish Hathi, Rolf A. Jansen, Zhiyuan Ji, Ray A. Lucas, Kameswara Mantha, Bahram Mobasher, Robert W. O’Connell, Brant Robertson, Zahra Sattari, L. Y. Aaron Yung, Romeel Davé, Duilia DeMello, Mark Dickinson, Henry Ferguson, Steven L. Finkelstein, Matt Hayes, Justin Howell, Sugata Kaviraj, John W. Mackenty, Brian Siana   +38 more
doaj   +1 more source

Active Galactic Nucleus Quenching in Simulated Dwarf Galaxies

The Astrophysical Journal, 2023
We examine the quenching characteristics of 328 isolated dwarf galaxies $\left({10}^{8}\lt {M}_{\mathrm{star}}/{M}_{\odot }\lt {10}^{10}\right)$ within the Romulus25 cosmological hydrodynamic simulation.
Ray S. Sharma, Alyson M. Brooks, Michael Tremmel, Jillian Bellovary, Thomas R. Quinn   +4 more
doaj   +1 more source

The size evolution of star-forming and quenched galaxies in the IllustrisTNG simulation

, 2019
© 2017 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. We analyse scaling relations and evolution histories of galaxy sizes in TNG100, part of the IllustrisTNG simulation suite.
Naiman, Jill, Torrey, Paul, Genel, Shy, Pakmor, Rüdiger, Pillepich, Annalisa, Hernquist, Lars, Marinacci, Federico, Springel, Volker, Weinberger, Rainer, Vogelsberger, Mark, Nelson, Dylan   +10 more
core   +2 more sources

Early Results from GLASS-JWST. IX. First Spectroscopic Confirmation of Low-mass Quiescent Galaxies at z > 2 with NIRISS

The Astrophysical Journal Letters, 2023
How passive galaxies form, and the physical mechanisms which prevent star formation over long timescales, are some of the most outstanding questions in understanding galaxy evolution.
Danilo Marchesini, Gabriel Brammer, Takahiro Morishita, Pietro Bergamini, Xin Wang, Marusa Bradac, Guido Roberts-Borsani, Victoria Strait, Tommaso Treu, Adriano Fontana, Tucker Jones, Paola Santini, Benedetta Vulcani, Ana Acebron, Antonello Calabrò, Marco Castellano, Karl Glazebrook, Claudio Grillo, Amata Mercurio, Themiya Nanayakkara, Piero Rosati, Chanita Tubthong, Eros Vanzella   +22 more
doaj   +1 more source

Relight the Candle: What happens to High Redshift Massive Quenched Galaxies [PDF]

, 2023
A puzzling population of extremely massive quiescent galaxies at redshifts beyond z=3 has recently been revealed by JWST and ALMA, some of them with stellar ages that show their quenching times to be as high as z=6, while their stellar masses are already
Kimmig, Lucas C., Remus, Rhea-Silvia
core  

ELVES. III. Environmental Quenching by Milky Way–mass Hosts

The Astrophysical Journal, 2023
Isolated dwarf galaxies usually exhibit robust star formation but satellite dwarf galaxies are often devoid of young stars, even in Milky Way–mass groups.
Jenny E. Greene, Shany Danieli, Scott Carlsten, Rachael Beaton, Fangzhou Jiang, Jiaxuan Li   +5 more
doaj   +1 more source

Early assembly of the most massive galaxies [PDF]

, 2009
The current consensus is that galaxies begin as small density fluctuations in the early Universe and grow by in situ star formation and hierarchical merging(1).
Chris A. Collins, Scott T Kay (16045382), Nicola Mehrtens (16047884), Ed Lloyd-Davies, Hoyle, Ben, Hosmer, Mark, Christopher J. Miller, Ben Hoyle, Mehrtens, Nicola, Robert G. Mann, Pedro T. P. Viana, Martin Sahlén (267044), S Adam Stanford (16061237), Mark Hosmer (16070585), Robert C Nichol (16067396), John P Stott (16070582), Martin Sahlén, Sahlen, Martin, John P. Stott, Kathy Romer (4460893), Matt Hilton (6956609), Viana, Pedro T. P., Mann, Robert G., Ben Hoyle (6914513), Stott, John P., Matt Hilton, Robert G Mann (7965452), Andrew Liddle, Stanford, S. Adam, Christopher J Miller (16070591), A. Kathy Romer, Davidson, Michael, Ed Lloyd-Davies (16075100), Romer, A. Kathy, Robert C. Nichol, Andrew Liddle (16042793), Pedro T P Viana (16045379), Nichol, Robert C., Kay, Scott T., Michael J. West, Chris A Collins (16061234), Scott T. Kay, Collins, Chris A., Michael Davidson, Mark Hosmer, West, Michael J., Michael Davidson (699678), S. Adam Stanford, Michael J West (5524436), Liddle, Andrew, Nicola Mehrtens, Miller, Christopher J., Hilton, Matt, Lloyd-Davies, Ed   +53 more
core   +1 more source

Rapid Quenching of Galaxies at Cosmic Noon

The Astrophysical Journal, 2023
The existence of massive quiescent galaxies at high redshift seems to require rapid quenching, but it is unclear whether all quiescent galaxies have gone through this phase and what physical mechanisms are involved.
Minjung Park, Sirio Belli, Charlie Conroy, Sandro Tacchella, Joel Leja, Sam E. Cutler, Benjamin D. Johnson, Erica J. Nelson, Razieh Emami   +8 more
doaj   +1 more source

Environmental quenching of high-redshift galaxies: Interpreting JWST observations with simulations

Astronomy & Astrophysics
Recent observations of the high-redshift Universe (z > 3), particularly with the James Webb Space Telescope (JWST), have revealed a population of quenched galaxies that challenges current galaxy formation models, which systematically underpredict their ...
Döven Aleyna, Ayromlou Mohammadreza, Porciani Cristiano   +2 more
doaj   +1 more source