Results 11 to 20 of about 2,258 (240)
On the origin of stellar associations [PDF]
, 2020 In this review I discuss different theories of the formation of OB associations in the Milky Way, and provide the observational evidences in support of them. In fact, the second release of Gaia astrometric data (April 2018) is revolutionising the field, because it allows us to unravel the 3D structure and kinematics of stellar associations with ...
G. Carraro
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Stellar Associations in the LMC [PDF]
Symposium - International Astronomical Union, 1999 The stellar associations are defined as loose unbound concentrations of young stars with a bright OB stellar component, mainly located at the most recent star forming regions, representing the smallest units in the hierarchy of stellar systems in galaxies.
E. Kontizas +5 more
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Stellar Associations and Regions of Star Formation [PDF]
Symposium - International Astronomical Union, 1987 The genetic nature of the OB and T-Tau stars connection with stellar associations is at present beyond any doubt. They present the characteristic population of the latter. From this important observational fact follows that all young objects connected with OB and T-Tau stars also originated in stellar associations, and hence, are genetically connected ...
L. V. Mirzoyan
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The kinematics of young stellar population in the W5 region of the Cassiopeia OB6 association: implication on the formation process of stellar associations [PDF]
The Astronomical Journal, 2023 Abstract The star-forming region W5 is a major part of the Cassiopeia OB6 association. Its internal structure and kinematics may provide hints of the star formation process in this region. Here, we present a kinematic study of young stars in W5 using the Gaia data and our radial velocity data.
Beomdu Lim +5 more
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Stellar Associations in the Tail of NGC 4038 [PDF]
Symposium - International Astronomical Union, 2004 We have used the Hubble Space Telescope and Wide Field Planetary Camera 2 to image the putative tidal dwarf galaxy located at the tip of the Southern tidal tail of NGC 4038/9, the Antennae. We resolve individual stars, and identify two stellar populations.
I. Saviane +2 more
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Evolution of Stellar Clusters and Associations
, 1971 Star clusters are usually defined as agglomerations of stars in space, whose average projected densities appear to exceed the density of background stars. Cluster members are identified either by parallax measurements or by common motion or also with the help of the color-luminosity diagram established from known members.
Pierre Bouvier
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A study of stellar association I Lacertae.
The Astronomical Journal, 1958 III Howard William E.
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Spectrophotometry in Stellar Associations [PDF]
Symposium - International Astronomical Union, 1978 When analyzing the spectral energy distributions of early type stars as measured at Cerro Calán, we find that many of them have a feature which we have called ΔD (Gutiérrez-Moreno et al., 1968); the internal error of the measure of ΔD for a single star is ±0.02.
A. Gutiérrez-Moreno, H. Moreno
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Young stellar clusters and associations in M 33 [PDF]
Astronomy and Astrophysics, 2010 17 pages, 13 figures.
Grossi, M. +3 more
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Stellar associations in M81 [PDF]
Monthly Notices of the Royal Astronomical Society, 1992 A catalogue of 180 stellar associations in M81 has been compiled using two plates taken with the 2-m Rozhen telescope. The catalogue gives the positions of associations, their mean angular sizes and H II identifications. It is found that the frequency distribution of associations in M81 is similar to that in M33, and their characteristic length is ≃ 80
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