Results 21 to 30 of about 744 (267)

Properties of Stellar Streams in the Galactic Disk

open access: yesOpen Astronomy, 2016
Stars of the Sirius, Coma Berenices, Hyades, Pleiades, Wolf 630, Dehnen 6, Dehnen 14, HR 1614, η Cephei, γ Leo streams, the newly identified two subgroups of the Hercules stream, and the streams BB 14, BB 17, BB 20, and BB 21 are selected using the ...
Marsakov V. A.   +2 more
doaj   +1 more source

THE STELLAR AND GASEOUS CONTENTS OF THE ORION DWARF GALAXY [PDF]

open access: yesThe Astronomical Journal, 2010
Astronomical Journal, in press.
Cannon, John M.   +7 more
openaire   +2 more sources

From Carbon to Cobalt: Chemical Compositions and Ages of z ∼ 0.7 Quiescent Galaxies

open access: yesThe Astrophysical Journal, 2023
We present elemental abundance patterns (C, N, Mg, Si, Ca, Ti, V, Cr, Fe, Co, and Ni) for a population of 135 massive quiescent galaxies at z ∼ 0.7 with ultra-deep rest-frame optical spectroscopy drawn from the LEGA-C survey.
Aliza G. Beverage   +7 more
doaj   +1 more source

The Stellar Content of the Nuclei of Spiral Galaxies [PDF]

open access: yesHighlights of Astronomy, 1980
Widened, image-tube spectra at a dispersion of 120 Å mm-1 were obtained of the nuclei of 36 spiral (Shapley-Ames) galaxies. Spectral features in the region λλ 3800 - 4300 Å were used to assign a spectral index to each galaxy and to estimate the luminosity classes of the stars contributing the majority of the light at these wavelengths. Bulge magnitudes
openaire   +1 more source

STELLAR, GAS, AND DARK MATTER CONTENT OF BARRED GALAXIES [PDF]

open access: yesThe Astrophysical Journal, 2017
ABSTRACT We select a sample of galaxies from the Sloan Digital Sky Survey Data Release 7 (SDSS-DR7) where galaxies are classified, through visual inspection, as hosting strong bars, weak bars, or as unbarred galaxies, and make use of H i mass and kinematic information from the Arecibo Legacy Fast ALFA survey catalog, to study the stellar,
openaire   +2 more sources

Stellar content of extremely red quiescent galaxies atz> 2 [PDF]

open access: yesAstronomy & Astrophysics, 2017
14 pages, published in A&A. v2: Erratum correction of a factor (1+z)^4 in the luminosity of Figs.
Lopez-Corredoira, M.   +3 more
openaire   +2 more sources

Vertical Density Distribution of the Galaxy from Star Count Analysis [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2002
The five space density distribution D(z) with distance perpendicular to the Galactic plane were combined. The scale heights and the local densities at z = 0 of the thin disk, thick disk, and the halo components were estimated from the nonlinear least ...
Young-Jong Sohn
doaj   +1 more source

The Stellar Content of the Local Group Dwarf Galaxy Phoenix

open access: yesThe Astronomical Journal, 1999
We present new deep $VI$ ground-based photometry of the Local Group dwarf galaxy Phoenix. Our results confirm that this galaxy is mainly dominated by red stars, with some blue plume stars indicating recent (100 Myr old) star formation in the central part of the galaxy.
Martinez-Delgado, D   +2 more
openaire   +6 more sources

Stellar Content of Local Group Galaxies - An Introduction [PDF]

open access: yesSymposium - International Astronomical Union, 1999
In The Realm of the Nebulae, Hubble (1936) first drew attention to the fact that the Milky Way system and the Andromeda galaxy belong to a small cluster that also contains M32, M33, the Magellanic Clouds, NGC 205, NGC 6822 and IC 1613. Hubble also listed IC 10 as a possible member of what he referred to as “the Local Group”. Inspection of the prints of
openaire   +1 more source

The Stellar Content of the Nuclei of Spiral Galaxies [PDF]

open access: yesHighlights of Astronomy, 1983
Numerous studies have been attempted to determine the stellar content of the nuclei of galaxies. In the case of elliptical galaxies observations show that there is a change in spectral type from later to earlier types correlated with a variation from high to low luminosity (e.g. Faber 1977).
D. Crampton, R.D. McClure, A.P. Cowley
openaire   +1 more source

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