Results 31 to 40 of about 143,610 (241)

The gas metallicity gradient and the star formation activity of disc galaxies [PDF]

, 2015
We study oxygen abundance profiles of the gaseous disc components in simulated galaxies in a hierarchical universe. We analyse the disc metallicity gradients in relation to the stellar masses and star formation rates of the simulated galaxies.
Pedrosa, Susana E., Sillero, Emanuel, Tissera, Patricia B., Vilchez, Jose M.   +3 more
core   +2 more sources

Critical Rates of Stellar Mass Loss [PDF]

Symposium - International Astronomical Union, 1979
Many of the effects of mass loss on OB stars have now been explored. Mass loss will cause a star to be overluminous for its mass (though less luminous than a star of its original mass) and, for moderate mass-loss rates, the luminosity decreases at the same rate as the mass contained in the convective core decreases causing the main sequence lifetime to
D. S. P. Dearborn, J. B. Blake
openaire   +1 more source

Stellar masses calibrated with micro-lensed quasars [PDF]

, 2014
We measure the stellar mass surface densities of early type galaxies by observing the micro-lensing of macro-lensed quasars caused by individual stars, including stellar remnants, brown dwarfs and red dwarfs too faint to produce photometric or ...
Blackburne, Jeffrey A., Pooley, David, Schechter, Paul L., Wambsganss, Joachim   +3 more
core   +1 more source

Low-Mass and Sub-stellar Eclipsing Binaries in Stellar Clusters [PDF]

, 2020
30 pages, 5 figures, no table.
Lodieu, Nicolas, Paunzen, Ernst, Zejda, Miloslav   +2 more
openaire   +2 more sources

Spitzer Observations of Red Galaxies: Implication for High-Redshift Star Formation

, 2005
My colleagues and I identified distant red galaxies (DRGs) with J-K>2.3 mag in the GOODS-S field. These galaxies reside at z~1-3.5, (=2.2) and based on their ACS (0.4-1 micron), ISAAC (1-2.2 micron), and IRAC (3-8 micron) photometry, they typically have ...
Alexander, Bauer, Baugh, Bell, Bell, Bouwens, Bruzual, Bunker, Casey Papovich, Chapman, Chary, Cimatti, Cole, Cowie, Daddi, Dale, Dickinson, Eyles, Fan, Ferguson, Franx, Förster-Schreiber, Giavalisco, Giavalisco, Hernquist, Juneau, Kauffmann, Kennicutt, Panagia, Papovich, Papovich, Rudnick, Steidel, Wolf, Yan, Yan   +35 more
core   +1 more source

The luminosity and stellar mass Fundamental Plane of early-type galaxies [PDF]

, 2009
From a sample of ~50000 early-type galaxies from the SDSS, we measured the traditional Fundamental Plane in four bands. We then replaced luminosity with stellar mass, and measured the "stellar mass" FP.
Bell, Bell, Bender, Bernardi, Bernardi, Bernardi, Bolton, Bower, Boylan-Kolchin, Bruzual, Bundy, Cappellari, Chabrier, D'Onofrio, De Lucia, de Vaucouleurs, Djorgovski, Dressler, Gallazzi, Gallazzi, Hopkins, Hyde, Joseph B. Hyde, Jørgensen, Jørgensen, La Barbera, La Barbera, Mariangela Bernardi, Nelan, Nigoche-Netro, Padmanabhan, Pahre, Robertson, Saglia, Saglia, Sersic, Thomas, Tinsley, Trager, Tremonti, Worthey   +40 more
core   +3 more sources

THE UNIVERSAL STELLAR MASS-STELLAR METALLICITY RELATION FOR DWARF GALAXIES [PDF]

The Astrophysical Journal, 2013
24 pages, 13 figures, 1 machine-readable table included in "Other formats," accepted to ApJ.
Kirby, E.V., Cohen, J.G., Ghathakurta, P., Cheng, L., Bullock, J.S., Gallazzi, Anna Rita   +5 more
openaire   +3 more sources

Stellar masses and mass ratios for Gaia open cluster members

Astronomy & Astrophysics
Context. Unresolved binaries in star clusters can bias stellar and cluster mass estimates. A proper treatment is therefore essential for studying the cluster dynamics and evolution. Aims.
Malhotra Sagar, Castro-Ginard Alfred, Anders Friedrich, Jordi Carme, Donada Judit, Luri Xavier, Balaguer-Núñez Lola, Qin Songmei, Jiang Yueyue, Župić Andrija   +9 more
doaj   +1 more source

Reproducing the Stellar Mass/Halo Mass Relation in Simulated LCDM Galaxies: Theory vs Observational Estimates

, 2012
We examine the present-day total stellar-to-halo mass (SHM) ratio as a function of halo mass for a new sample of simulated field galaxies using fully cosmological, LCDM, high resolution SPH + N-Body simulations.These simulations include an explicit ...
A. M. Brooks, Abadi, Avila-Reese, B. Moster, Behroozi, Behroozi, Bell, Bell, Bigiel, Blain, Blanton, Bower, Brooks, Brooks, C. Christensen, Cannon, Ceverino, Colín, Conroy, Dalcanton, Eke, F. Governato, Fall, Ferah Munshi, Geha, Geller, Genzel, Giovanelli, Gnedin, Gnedin, Graham, Guedes, Huang, J. Wadsley, Johansson, Keres, Klypin, Knollmann, Krumholz, Kuhlen, Leauthaud, Leauthaud, Leitherer, Leitner, Macciò, Maraston, Martin, Moore, Ogiya, Oh, Reddick, S. Loebman, S. Shen, Sawala, Shimasaku, T. Quinn, Thacker, Trujillo-Gomez, Vázquez, Wang, White, Wise, Yang, Yasuda, Zheng, Zolotov   +65 more
core   +1 more source

Cerebrospinal Fluid Liquid Biopsy Enables Targeted Therapy Without Tissue Diagnosis in Pediatric Low‐Grade Gliomas With BRAF V600E Mutation

Pediatric Blood &Cancer, EarlyView.
ABSTRACT We present two pediatric cases of pediatric low‐grade gliomas (PLGG) with BRAF V600E mutations diagnosed and monitored using cerebrospinal fluid (CSF) liquid biopsy analyzed via digital droplet PCR (ddPCR), without tissue biopsy. Both patients were treated with dabrafenib and trametinib and monitored through clinical assessments, magnetic ...
Hannah Sultan, Damien Faury, Alexander G. Weil, Harrison J. Westwick, Nada Jabado, Sébastien Perreault   +5 more
wiley   +1 more source