Results 21 to 30 of about 41,072 (339)
The Stellar Association LH 99 [PDF]
Symposium - International Astronomical Union, 1991 The stellar content of this stellar association, related to the supernova remnant N 157B = SNR 0538-691, was up to now unknown, except for three Wolf-Rayet stars and a few red supergiant candidates. A thorough study based on UBV photometry, spectra of 95 stars and nebular spectra will be described elsewhere (see also Schild et al. in these Proceedings).
M.C. Lortet, G. Testor, H. Schild
openaire +1 more source
OB stellar associations in the Large Magellanic Cloud: Survey of young stellar systems [PDF]
Astronomy & Astrophysics, 2003 The method developed by Gouliermis et al. (2000, Paper I), for the detection and classification of stellar systems in the LMC, was used for the identification of stellar associations and open clusters in the central area of the LMC. This method was applied on the stellar catalog produced from a scanned 1.2m UK Schmidt Telescope Plate in U with a field ...
Gouliermis, D. +3 more
openaire +3 more sources
Chandra Studies of the X-ray Point Source Luminosity Functions of M31 [PDF]
, 2002 Three different M31 disk fields, spanning a range of stellar populations, were observed by Chandra. We report the X-ray point source luminosity function (LF) of each region, and the LF of M31's globular clusters, and compare these with each other and ...
Albert K. H. Kong +12 more
core +2 more sources
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
openaire +1 more source
Young stellar clusters and associations in M 33 [PDF]
Astronomy and Astrophysics, 2010 17 pages, 13 figures.
Grossi, M. +3 more
openaire +2 more sources
Activity cycles in members of young loose stellar associations [PDF]
, 2017 Magnetic cycles have been detected in tens of solar-like stars. The relationship between the cycle properties and global stellar parameters is not fully understood yet.
Distefano, E. +4 more
core +2 more sources
A Population of Dipper Stars from the Transiting Exoplanet Survey Satellite Mission
The Astrophysical Journal Supplement Series, 2022 Dipper stars are a classification of young stellar objects that exhibit dimming variability in their light curves, dropping in brightness by 10%–50%, likely induced by occultations due to circumstellar disk material.
Benjamin K. Capistrant +14 more
doaj +1 more source
, 1999 Since the previous (1990) edition of this meeting enormous progress in the field of OB associations has been made. Data from X-ray satellites have greatly advanced the study of the low-mass stellar content of associations, while astrometric data from the
Blaauw, A. +4 more
core +3 more sources
Lithium depletion boundary, stellar associations, andGaia
Astronomy & Astrophysics, 2022 Context.Stellar ages are key to improving our understanding of different astrophysical phenomena. However, many techniques to estimate stellar ages are highly model-dependent. The lithium depletion boundary (LDB), based on the presence or absence of lithium in low-mass stars, can be used to derive ages in stellar associations of between 20 and 500 Ma ...
F. J. Galindo-Guil +11 more
openaire +3 more sources
Reaction of Massive Clusters to Gas Expulsion - The cluster density dependence [PDF]
, 2013 The expulsion of the unconverted gas at the end of the star formation process potentially leads to the expansion of the just formed stellar cluster and membership loss.
Kaczmarek, Thomas, Pfalzner, Susanne
core +2 more sources