Results 91 to 100 of about 53,517 (330)

Enhanced Star Formation and Black Hole Accretion Rates in Galaxy Mergers in IllustrisTNG50

The Astrophysical Journal
Many theoretical and observational studies have suggested that galaxy mergers may trigger enhanced star formation or active galactic nucleus activity.
Aimee L. Schechter, Shy Genel, Bryan Terrazas, Julia M. Comerford, Abigail Hartley, Rachel S. Somerville, Rebecca Nevin, Joseph Simon, Erica Nelson   +8 more
doaj   +1 more source

Merging massive black holes: the right place and the right time [PDF]

, 2017
The LIGO/Virgo detections of gravitational waves from merging black holes of $\simeq$ 30 solar mass suggest progenitor stars of low metallicity (Z/Z$_{\odot} \lesssim 0.3$).
Lamberts, Astrid
core   +3 more sources

Observing Galaxy Mergers at the Epoch of Reionization

The Astrophysical Journal, 2018
Abstract The galaxies with photometric redshifts observed in a close angular proximity might be either projection coincidences, strongly lensed images of the same galaxy, or separate galaxies that are in a stage of merging. We search for the groups of galaxies in the Hubble Ultra Deep Field (HUDF09) in z ∼ 7 and z ∼ 8 drop-out samples ...
Evgenii A. Chaikin, Nadezda V. Tyulneva, Alexander A. Kaurov   +2 more
openaire   +2 more sources

Mergers of Luminous Early-Type Galaxies [PDF]

Proceedings of the International Astronomical Union, 2009
Galaxy mergers play an important role in many astrophysical processes, such as growth of massive galaxies, triggering AGN, formation of supermassive black hole (SMBH) binaries, and gravitational wave (GW) radiation. Merger rate is one of key quantities for these studies.
Wen, Z. L., Han, J. L., Liu, F. S.
openaire   +2 more sources

Galaxy evolution in the post-merger regime. II -- Post-merger quenching peaks within 500 Myr of coalescence

The Open Journal of Astrophysics
Mechanisms for quenching star formation in galaxies remain hotly debated, with galaxy mergers an oft-proposed pathway. In Ellison et al. (2022) we tested this scenario by quantifying the fraction of recently and rapidly quenched post-starbursts (PSBs) in
Sara Ellison, Leonardo Ferreira, Vivienne Wild, Scott Wilkinson, Kate Rowlands, David R. Patton   +5 more
doaj   +1 more source

Revisiting the Gas Dynamics of Henize 2–10: Possible Drivers of the Starburst

The Astrophysical Journal
The triggers of starburst episodes are a key component to our understanding of the baryon cycle in galaxies. Galaxy mergers are a commonly suggested catalyst for starbursts, but once the galaxies coalesce into a single kinematically disturbed system ...
Josephine M. Dalsin, Allison H. Costa, Remy Indebetouw, Kelsey E. Johnson, Natalie O. Butterfield, Sabrina Stierwalt   +5 more
doaj   +1 more source

Star Formation Properties in Barred Galaxies(SFB). I. Ultraviolet-to-Infrared Imaging and Spectroscopic Studies of NGC 7479

, 2011
Large-scale bars and minor mergers are important drivers for the secular evolution of galaxies. Based on ground-based optical images and spectra as well as ultraviolet data from the Galaxy Evolution Explorer and infrared data from the Spitzer Space ...
Aguerri, Alongi, Athanassoula, Athanassoula, Athanassoula, Barazza, Bell, Bressan, Calzetti, Calzetti, Calzetti, Chabrier, Chen Cao, Conselice, Conselice, Conselice, de Vaucouleurs, Elmegreen, Eskridge, Fagotto, Fagotto, Fazio, Fazio, Fisher, Fisher, Gadotti, Gadotti, Gadotti, Genzel, Gil de Paz, Helou, Higdon, Ho, Ho, Hong Wu, Hüttemeister, Jogee, Jogee, Kartaltepe, Kennicutt, Kormendy, Kormendy, Laine, Laine, Laine, Lee, Leitherer, Makishima, Marinova, Martin, Martin, Martin, Mazzuca, Meng, Moustakas, Muñoz-Mateos, Pahre, Regan, Reynaud, Rieke, Romano-Díaz, Sandage, Schade, Sellwood, Sellwood, Sheth, Sheth, Shumakova, Skrutskie, Strateva, Wang, Werner, Wu, Wu, Wu, Xian-Min Meng, Zaritsky, Zhi-Min Zhou, Zhu, Zhu, Zurita   +80 more
core   +1 more source

The Fall of a Giant. Chemical evolution of Enceladus, alias the Gaia Sausage [PDF]

, 2019
We present the first chemical evolution model for Enceladus, alias the Gaia Sausage, to investigate the star formation history of one of the most massive satellites accreted by the Milky Way during a major merger event.
Aguirre, Victor Silva, Calura, Francesco, Cescutti, Gabriele, Matteucci, Francesca, Miglio, Andrea, Spitoni, Emanuele, Vincenzo, Fiorenzo   +6 more
core   +4 more sources

The Effect of Galaxy Mergers in the Local Galaxy Population [PDF]

Proceedings of the International Astronomical Union, 2006
The luminosity function (LF) is one of the most fundamental quantities to be observed in Astronomy. It is determined by the combined effects of the various physical phenomena that drive galaxy formation and evolution, therefore it is a very useful tool to constrain cosmological models.
Leda Sampson, Neil Trentham
openaire   +1 more source

Patterns of wild meat and other protein consumption in the periphery of Salonga National Park, Democratic Republic of the Congo

People and Nature, EarlyView.
Abstract In Central Africa, human activities are severely impacting terrestrial and aquatic wildlife, threatening the food security of millions of people. Accordingly, sustainable use of wildlife is crucial for the nutrition and livelihoods of many rural communities in the region.
Zolo Admettons, Mattia Bessone, Josué Ausse Baraka, Josué Engombe Botomia, Espérance Miezi, Bénédicte Nsilu, Jonathan Nkamisha Mukole, Michel Opelele Omeno, Jean Semeki Ngabinzeke, Barbara Fruth   +9 more
wiley   +1 more source