Results 71 to 80 of about 282,692 (200)

Constraints on the relationship between stellar mass and halo mass at low and high redshift

, 2009
We use a statistical approach to determine the relationship between the stellar masses of galaxies and the masses of the dark matter halos in which they reside.
Andrea V. Macciò, Bell, Benjamin P. Moster, Berlind, Bertschinger, Brown, Bryan, Christian Maulbetsch, Cole, Conroy, Conroy, Drory, Drory, Fall, Frank C. van den Bosch, Kauffmann, Klypin, Kravtsov, Lin, Lin, Ludwig Oser, Marín, Moster, Press, Rachel S. Somerville, Shankar, Spergel, Tasitsiomi, Thorsten Naab, Tinker, White, White, Yan, Yang, Yang, Zehavi, Zehavi, Zehavi, Zheng   +38 more
core   +1 more source

Stellar Mass-Radius Relation

Communications Faculty Of Science University of Ankara, 1989
The stellar mass-radius relation is determined by using new data on absolute dimensions of the components of well-detached binary systems. The relation is compared with the published empirical and theoretical mass-radins relations. The location of the knee in the empirical relation is estimated in 1.66 solar mass.
openaire   +2 more sources

Stellar Mass Segregation in Dark Matter Halos

The Astrophysical Journal
We study the effect of stellar mass segregation driven by collisional relaxation within the potential well of a smooth dark matter halo. This effect is of particular relevance for old stellar systems with short crossing times, where small collisional ...
Raphaël Errani, Jorge Peñarrubia, Matthew G. Walker   +2 more
doaj   +1 more source

X-Shooter study of accretion in Chamaeleon I: II. A steeper increase of accretion with stellar mass for very low mass stars? [PDF]

, 2017
The dependence of the mass accretion rate on the stellar properties is a key constraint for star formation and disk evolution studies. Here we present a study of a sample of stars in the Chamaeleon I star forming region carried out using the VLT/X ...
Alcala, J. M., Antoniucci, S., Fedele, D., Henning, T., Herczeg, G. J., Manara, C. F., Mohanty, S., Mulders, G. D., Natta, A., Pascucci, I., Prusti, T., Rigliaco, E., Testi, L.   +12 more
core   +2 more sources

Constraints on the Faint End of the Galaxy Stellar Mass Function at z ≃ 4–8 from Deep JWST Data

The Astrophysical Journal
We analyze a sample of 3300 galaxies between redshifts z ≃ 3.5 and z ≃ 8.5 selected from James Webb Space Telescope (JWST) images in the Hubble Ultra Deep Field and UKIDSS Ultra Deep Survey field, including objects with stellar masses as low as ≃10 ^8 M ...
Rafael Navarro-Carrera, Pierluigi Rinaldi, Karina I. Caputi, Edoardo Iani, Vasily Kokorev, Sophie E. van Mierlo   +5 more
doaj   +1 more source

The Massive End of the Stellar Mass Function

, 2015
We derive average flux corrections to the \texttt{Model} magnitudes of the Sloan Digital Sky Survey (SDSS) galaxies by stacking together mosaics of similar galaxies in bins of stellar mass and concentration.
D'Souza, R., Kauffmann, G., Vegetti, S.
core   +1 more source

A missing outskirts problem? Comparisons between stellar halos in the Dragonfly Nearby Galaxies Survey and the TNG100 simulation

, 2020
Low surface brightness galactic stellar halos provide a challenging but promising path towards unraveling the past assembly histories of individual galaxies.
Hernquist, Lars, Marinacci, Federico, Merritt, Allison, Nelson, Dylan, Pillepich, Annalisa, van Dokkum, Pieter, Vogelsberger, Mark   +6 more
core   +1 more source

Evolution of the Near-Infrared Tully-Fisher Relation: Constraints on the Relationship Between the Stellar and Total Masses of Disk Galaxies since z=1

, 2005
Using a combination of Keck spectroscopy and near-infrared imaging, we investigate the K-band and stellar mass Tully-Fisher relation for 101 disk galaxies at 0.2 < z < 1.2, with the goal of placing the first observational constraints on the assembly ...
Andrew C. Phillips, Christopher J. Conselice, Groth E. J., Jarle Brichmann, Kevin Bundy, Motohara K., Nicole P. Vogt, Poggianti B. M., Richard S. Ellis, Tully R. B.   +9 more
core   +1 more source

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

The Stellar Morphology and Size of X-Ray-selected Active Galactic Nucleus Host Galaxies Revealed by JWST

The Astrophysical Journal
We investigate the stellar shape and size–mass relationship of X-ray-selected active galactic nucleus (AGN) host galaxies using the high angular resolution and deep sensitivity in the near-infrared of the COSMOS-Web JWST survey field. We present the rest-
Bovornpratch Vijarnwannaluk, Zhen-Kai Gao, Wei-Hao Wang, Chian-Chou Chen, Abdurrahman Naufal, Adarsh Ranjan, Bau-Ching Hsieh, Chayan Mondal, Chih-Yuan Chang, Hiddo S.B. Algera, Li-Wen Liao, Masayuki Akiyama, Seong Jin Kim, Shoichiro Mizukoshi, Tomotsugo Goto, Yu-Yen Chang, Caitlin Casey, Jeyhan S. Kartaltepe, Hollis B. Akins, Marko Shuntov, Maximilien Franco, Santosh Harish   +21 more
doaj   +1 more source