Results 61 to 70 of about 282,692 (200)

Early Results from GLASS-JWST. XI. Stellar Masses and Mass-to-light Ratio of z > 7 Galaxies

The Astrophysical Journal Letters, 2023
We exploit James Webb Space Telescope (JWST) NIRCam observations from the GLASS-JWST-Early Release Science program to investigate galaxy stellar masses at z > 7.
P. Santini, A. Fontana, M. Castellano, N. Leethochawalit, M. Trenti, T. Treu, D. Belfiori, S. Birrer, A. Bonchi, E. Merlin, C. Mason, T. Morishita, M. Nonino, D. Paris, G. Polenta, P. Rosati, L. Yang, K. Boyett, M. Bradac, A. Calabrò, A. Dressler, K. Glazebrook, D. Marchesini, S. Mascia, T. Nanayakkara, L. Pentericci, G. Roberts-Borsani, C. Scarlata, B. Vulcani, Xin Wang   +29 more
doaj   +1 more source

An empirical prediction for stellar metallicity distributions in nearby galaxies

, 2012
We combine star-formation histories derived from observations of high redshift galaxies with measurements of the z~0 relation between gas-phase metallicity, stellar mass, and star formation rate to make an explicit and completely empirical connection ...
Allende Prieto, Arrigoni, Asplund, Behroozi, Bensby, Bland-Hawthorn, Bouché, Brinchmann, Brooks, Brooks, Bruzual, Chabrier, Colavitti, Conroy, Daddi, Davé, Davé, Dayal, De Lucia, De Lucia, Delahaye, Dolphin, Eisenstein, Elbaz, Ellison, Ellison, Erb, Finlator, Fontanot, Gallazzi, Gallazzi, Garnett, Hirschmann, Hughes, Ivezić, Karim, Kewley, Kewley, Kimm, Kirby, Kirby, Kirby, Klypin, Kobayashi, Kobulnicky, Kormendy, Lara-López, Leitner, Leitner, Lopez-Sanchez, Lynden-Bell, Maiolino, Mannucci, Mannucci, Molly S. Peeples, Moster, Mouhcine, Nagashima, Nicholls, Noeske, Oliver, Oppenheimer, Pagel, Pasquali, Pasquali, Peeples, Rachel S. Somerville, Robaina, Salim, Savaglio, Scannapieco, Shapley, Skelton, Somerville, Sommariva, Spitoni, Thomas, Tinsley, Tinsley, Tissera, Toomre, Trager, Tremonti, Tumlinson, Weisz, Wiersma, Woo, Yabe, Yates, Zahid, Zahid, Zaritsky, Zheng   +92 more
core   +1 more source

The Growth of Galaxy Stellar Haloes over 0.2 ≤ z ≤ 1.1

The Astrophysical Journal
Galaxies are predicted to assemble their stellar haloes through the accretion of stellar material from interactions with their cosmic environment. Observations that trace stellar halo buildup probe the processes that drive galaxy size and stellar mass ...
Devin J. Williams, Ivana Damjanov, Marcin Sawicki, Harrison Souchereau, Lingjian Chen, Guillaume Desprez, Angelo George, Marianna Annunziatella, Stéphane Arnouts, Stephen Gwyn, Danilo Marchesini, Anna Sajina   +11 more
doaj   +1 more source

Does God play dice with star clusters?

The Open Journal of Astrophysics, 2023
When a detailed model of a stellar population is unavailable, it is most common to assume that stellar masses are independently and identically distributed according to some distribution: the universal initial mass function (IMF). However, stellar masses
Michael Y. Grudic, Stella S. R. Offner, Dávid Guszejnov, Claude-André Faucher-Giguère, Philip F. Hopkins   +4 more
doaj   +1 more source

Parametrizing the Stellar Haloes of Galaxies

, 2014
We study the stellar haloes of galaxies out to 70-100 kpc as a function of stellar mass and galaxy type by stacking aligned $r$ and $g$ band images from a sample of 45508 galaxies from SDSS DR9 in the redshift range $0.06\,\le\,z\,\le\,0.1$ and in the ...
D'Souza, R., Kauffmann, G., Vegetti, S., Wang, J.   +3 more
core   +1 more source

Stellar Mass and Stellar Mass-to-light Ratio–Color Relations for Low Surface Brightness Galaxies

The Astronomical Journal, 2020
Abstract We estimate the stellar mass for a sample of low surface brightness galaxies (LSBGs) by fitting their multiband spectral energy distributions (SEDs) to the stellar population synthesis model. The derived stellar masses (log M */M ⊙) span from 7.1 to 11.1, with a mean of log M
Wei Du, Cheng Cheng, Zheng Zheng, Hong Wu   +3 more
openaire   +2 more sources

Intermediate-mass black hole binary evolution in nuclear star clusters: The effect of the stellar-mass black hole population

Astronomy & Astrophysics
Aims. In this study, we investigate the dynamics of intermediate-mass black hole (IMBH) binaries within nuclear star clusters (NSCs) that contain a population of stellar-mass black holes (BHs).
Khan Fazeel Mahmood, Berczik Peter, Sobolenko Margaryta, Just Andreas, Spurzem Rainer, Holley-Bockelmann Kelly, Macciò Andrea V.   +6 more
doaj   +1 more source

Tracing the Evolution of SMBHs and Stellar Objects in Galaxy Mergers: A Multi-mass Direct N-body Model

The Astrophysical Journal, 2023
By using direct N -body numerical simulations, we model the dynamical coevolution of two supermassive black holes (SMBHs) and the surrounding stars in merging galaxies. In order to investigate how different stellar components evolve during the merger, we
Shuo Li, Shiyan Zhong, Peter Berczik, Rainer Spurzem, Xian Chen, F. K. Liu   +5 more
doaj   +1 more source

The ages and metallicities of galaxies in the local universe

, 2005
We derive stellar metallicities, light-weighted ages and stellar masses for a magnitude-limited sample of 175,128 galaxies drawn from the Sloan Digital Sky Survey Data Release Two (SDSS DR2).
Brinchmann, Jarle, Charlot, Stephane, Gallazzi, Anna, Tremonti, Christy A., White, Simon D. M.   +4 more
core   +3 more sources

Tracing Galaxy Evolution in the Nearby Universe: The Role of Dark Matter

The Astronomical Journal
Using a sample of ∼126,000 late-type galaxies (LTGs) from the Sloan Digital Sky Survey, we analyzed stellar mass as a function of the dynamical mass. Stellar masses are estimated using eight stellar population synthesis (SPS) models with constant initial
A. Nigoche-Netro, P. Lagos, R. J. Diaz, E. de la Fuente, M. P. Agüero, A. Ruelas-Mayorga, S. N. Kemp, R. A. Marquez-Lugo, R. Ibarra-Nuño   +8 more
doaj   +1 more source