Results 121 to 130 of about 23,012 (280)
Kinematics and Metallicity of the Dwarf Spheroidal Galaxy Andromeda XVIII
The Astrophysical JournalAndromeda XVIII is an isolated dwarf galaxy 579 kpc away from the nearest large galaxy, M31. It is a candidate “backsplash galaxy” that might have been affected by a close passage to M31.
Kateryna A. Kvasova +2 more
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A Dynamically Distinct Stellar Population in the Leading Arm of the Sagittarius Stream
The Astrophysical Journal Letters, 2023 We present a chemical and dynamical analysis of the leading arm (LA) and trailing arm (TA) of the Sagittarius (Sgr) stream, as well as for the Sgr dwarf galaxy core (SC), using red giant branch, main-sequence, and RR Lyrae stars from large spectroscopic ...
Gwibong Kang +3 more
doaj +1 more source
Chemical evolution of Local Group dwarf galaxies in a cosmological context - I. A new modelling approach and its application to the Sculptor dwarf spheroidal galaxy [PDF]
, 2013 We present a new approach for chemical evolution modelling, specifically designed to investigate the chemical properties of dwarf galaxies in a full co smological framework.
D. Romano, E. Starkenburg
semanticscholar +1 more source
Variable Stars in Dwarf Spheroidal Galaxies [PDF]
International Astronomical Union Colloquium, 1973 Interest in dwarf spheroidal galaxies is motivated by a number of reasons; an important one on the occasion of this colloquium is the abundance of variable stars. The theory of stellar evolution and stellar pulsations is now able to predict from theoretical considerations characteristic properties of variable stars in the colour-magnitude diagram (Iben,
openaire +2 more sources
A SPECTROSCOPIC BINARY IN THE HERCULES DWARF SPHEROIDAL GALAXY [PDF]
The Astrophysical Journal, 2013 We present the radial velocity curve of a single-lined spectroscopic binary in the faint Hercules dwarf spheroidal (dSph) galaxy, based on 34 individual spectra covering more than two years of observations. This is the first time that orbital elements could be derived for a binary in a dSph.
Koch, Andreas +3 more
openaire +3 more sources
Little Bear’s pulsating stars: Variable star census of UMi dSph Galaxy
EPJ Web of Conferences, 2017 Recent observations and a photometric search for variable stars in the Ursa Minor dwarf spheroidal galaxy (UMi dSph) are presented. Our observations were taken at Apache Point Observatory in 2014 and 2016 using the 0.5m ARCSAT telescope and the West ...
Kinemuchi K. +4 more
doaj +1 more source
Neutron-capture element deficiency of the Hercules dwarf spheroidal galaxy [PDF]
, 2013 We present an assessment of the barium abundance ratios for red giant member stars in the faint Hercules dwarf spheroidal (dSph) galaxy. Our results are drawn from intermediate-resolution FLAMES/GIRAFFE spectra around the Ba II 6141.71 angstrom ...
A. Koch +3 more
semanticscholar +1 more source
Environmental effects on the structure of the dwarf spheroidal galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 1996 14 pages, plain TEX, 4 figures soon available via ftp://boas3.bo.astro .it bap/files/ , get bap95-34fig*.ps or http://www.bo.astro.it/ or upon request at bellazzini@astbo3.bo.astro.it --accepted by MNRAS ...
M. Bellazzini +2 more
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A Study of Abundance Patterns in the Sextans and Sculptor Dwarf Spheroidal Galaxies
The Astrophysical JournalIn this work, we employ a multicomponent decomposition model to study the Sextans and Sculptor dwarf spheroidal galaxies, which have distinct evolutionary histories.
Shuaishuai Yang +3 more
doaj +1 more source
The Astrophysical Journal, 2023 We present a photometric study of the resolved stellar populations in Andromeda IX (And IX), the closest satellite to M31, a metal-poor and low-mass dwarf spheroidal galaxy. We estimate a distance modulus of ${24.56}_{-0.15}^{+0.05}$ mag based on the tip
Hedieh Abdollahi +11 more
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