Results 31 to 40 of about 28,044 (289)
Open Astronomy, 2021 We introduce the application of the clustering algorithm to the preliminary compiled list of probable wide pairs of co-moving stars. The main aim of such development is a possibility of unsupervised blind search of coeval loose stellar structures over ...
Sapozhnikov Sergei, Kovaleva Dana
doaj +1 more source
The Astrophysical Journal, 2023 We present spectroscopic chemical abundances of red giant branch stars in Andromeda (M31), using medium-resolution ( R ∼ 6000) spectra obtained via the Spectroscopic and Photometric Landscape of Andromeda’s Stellar Halo survey.
J. Leigh Wojno +8 more
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Streams in the Aquarius stellar haloes [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 We use the very high resolution, fully cosmological simulations from the Aquarius project, coupled to a semi-analytical model of galaxy formation, to study the phase-space distribution of halo stars in "solar neighbourhood"-like volumes. We find that this distribution is very rich in substructure in the form of stellar streams for all five stellar ...
F. A. Gomez +5 more
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Stellar Motions in the Polar Ring Galaxy NGC 4650A [PDF]
, 2003 We present the first measurement of the stellar kinematics in the polar ring of NGC 4650A. There is well defined rotation, with the stars and gas rotating in the same direction, and with similar amplitude.
Combes F., Rob A. Swaters, Vera C. Rubin
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Stellar streams around the Magellanic Clouds [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 15 pages, 11 figures. Figures improved.
Vasily Belokurov, Sergey E. Koposov
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The Spectacular Tidal Tails of Globular Cluster M3 (NGC 5272)
The Astrophysical Journal, 2023 We provide a detailed analysis of the tidal tails of the globular cluster M3 (NGC 5272). We first discover clear extratidal structures with a slight S shape near the cluster. This inspires us to examine the existence of its long tidal tails. We highlight
Yong Yang +4 more
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The Virgo Stellar Stream: Extended sample [PDF]
Proceedings of the International Astronomical Union, 2009 AbstractWe have completed a spectroscopic study of the “12.4 hr clump”, the second largest substructure in the Quasar Equatorial Survey Team (QUEST) catalog. First discovered as an over-density of RR Lyrae stars (Vivas et al. 2001, ApJL 554 33), the region containing the “12.4 hr clump” has generated much interest (Newberg et al.
S. Duffau +4 more
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The Astrophysical Journal, 2023 The positions and velocities of stellar streams have been used to constrain the mass and shape of the Milky Way's dark matter halo. Several extragalactic streams have already been detected, though it has remained unclear what can be inferred about the ...
Jacob Nibauer +2 more
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A comprehensive view of the Virgo stellar stream [PDF]
Astronomy & Astrophysics, 2014 16 pages, 13 figures, 11 tables, Accepted for publication in A& ...
Duffau, Sonia +4 more
openaire +3 more sources
Finding halo streams with a pencil-beam survey: new wraps in the Sagittarius stream [PDF]
, 2013 We use data from two CFHT-MegaCam photometric pencil-beam surveys in the g' and the r' bands to measure distances to the Sagittarius, the Palomar 5 and the Orphan stream.
de Jong, J. T. A. +4 more
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