Results 51 to 60 of about 282,692 (200)
The stellar mass - size relation for cluster galaxies at z=1 with high angular resolution from the Gemini/GeMS multi-conjugate adaptive optics system [PDF]
, 2016 We present the stellar mass - size relation for 49 galaxies within the $z$ = 1.067 cluster SPT-CL J0546$-$5345, with FWHM $\sim$80-120 mas $K_{\mathrm s}$-band data from the Gemini multi-conjugate adaptive optics system (GeMS/GSAOI).
Abraham, Roberto +9 more
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Rapid mass segregation in small stellar clusters [PDF]
Astrophysics and Space Science, 2017 In this paper we focus our attention on small-to-intermediate N-body systems that are, initially, distributed uniformly in space and dynamically cool (virial ratios $Q=2T/| |$ below ~0.3). In this work, we study the mass segregation that emerges after the initial violent dynamical evolution.
Mario Spera, Roberto Capuzzo-Dolcetta
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ON THE ORIGIN OF STELLAR MASSES [PDF]
The Astrophysical Journal, 2011 It has been a longstanding problem to determine, as far as possible, the characteristic masses of stars in terms of fundamental constants; the almost complete invariance of this mass as a function of the star-forming environment suggests that this should be possible. Here I provide such a calculation.
openaire +3 more sources
, 2009 Using a large SDSS galaxy group catalogue, we study how the stellar ages and metallicities of central and satellite galaxies depend on stellar mass and halo mass.
Bosch, Frank C. van den +6 more
core +1 more source
The COSMOS2015 galaxy stellar mass function [PDF]
Astronomy & Astrophysics, 2017 We measure the stellar mass function (SMF) and stellar mass density of galaxies in the COSMOS field up to z ~ 6. We select them in the near-IR bands of the COSMOS2015 catalogue, which includes ultra-deep photometry from UltraVISTA-DR2, SPLASH, and Subaru/Hyper Suprime-Cam. At z> 2.5 we use new precise photometric redshifts with error σz = 0.03(1 + z)
Davidzon, I. +23 more
openaire +5 more sources
The Astrophysical Journal, 2023 Based on independent shear measurements using the Dark Energy Camera Legacy Survey/DR8 imaging data, we measure the weak lensing signals around isolated central galaxies (ICGs) from Sloan Digital Sky Survey/DR7 at z ∼ 0.1.
Pedro Alonso +8 more
doaj +1 more source
Pulsation Period Change & Classical Cepheids: Probing the Details of Stellar Evolution
, 2014 Measurements of secular period change probe real-time stellar evolution of classical Cepheids making these measurements powerful constraints for stellar evolution models, especially when coupled with interferometric measurements. In this work, we present
Bisol, Alexandra C. +3 more
core +1 more source
Ly Halo Properties and Dust in the Circumgalactic Medium of z ∼ 2 Star-forming Galaxies
The Astrophysical JournalWe present Keck Cosmic Web Imager integral-field unit observations around extended Ly α halos of 27 typical star-forming galaxies with redshifts 2.0 < z < 3.2 drawn from the MOSFIRE Deep Evolution Field survey.
Zhiyuan Song +9 more
doaj +1 more source
Intrinsic stellar mass flux and steady stellar winds
The Astrophysical Journal, 1982 The conventional view that winds from stars like the Sun result from the existence of a hot corona and a low-pressure interstellar medium has recently been challeanged by R. N. Thomas and collegues. They suggest that the rates of mass loss from these and other stars are determined by conditions imposed on the flow at or below photospheric levels and ...
R. L. T. Wolfson, T. E. Holzer
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A STEEPER THAN LINEAR DISK MASS–STELLAR MASS SCALING RELATION [PDF]
The Astrophysical Journal, 2016 ABSTRACT The disk mass is among the most important input parameter for every planet formation model to determine the number and masses of the planets that can form. We present an ALMA 887 μm survey of the disk population around objects from ∼2 to 0.03 M ⊙ in the nearby ∼2 Myr old Chamaeleon I star-forming region.
I. Pascucci +15 more
openaire +7 more sources