Results 31 to 40 of about 29,699 (309)
The Astrophysical Journal Supplement Series, 1985 Rotational velocities and spectral types have been determined for Be stars in 12 open clusters in both the northern and the southern sky, and color-magnitude or H-R diagrams constructed for each from available photometric data. The location of the Be stars in the color-magnitude diagrams shows again that Be stars may exist in various evolutionary ...
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A Study of Stellar Spins in 15 Open Clusters
The Astrophysical Journal, 2023 We analyze spectroscopic and photometric data to determine the projected inclinations of stars in 11 open clusters, placing constraints on the spin-axis distributions of six clusters.
Brian F. Healy +3 more
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On the disc and halo of the milky way through a study of star clusters [PDF]
Serbian Astronomical Journal, 2000 The subject is the metallicity and the correlation between the metallicity and spatial distribution of star clusters of the Milky Way. The open star clusters are confirmed as good indicators for the population of the galactic disc, whereas the globular ...
Nagl M.
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The Occurrence of Peculiar Stars in Open Clusters [PDF]
Symposium - International Astronomical Union, 1978 We have classified on the MK system a total of 455 stars in 12 open clusters and associations. The classification is based on wide (1.2 mm) spectra of two reciprocal dispersions (39, 128 Å mm−1) obtained with the Kitt Peak 2.1 m and 90 cm reflectors, respectively.
Helmut A. Abt, Hugo Levato
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UOCS. XIII. Study of the Far-ultraviolet Bright Stars in the Open Cluster NGC 2420 Using AstroSat
The Astrophysical JournalWe present the study of four far-ultraviolet (FUV) bright stars in the field of the open cluster NGC 2420 using the Ultra Violet Imaging Telescope mounted on AstroSat.
R. K. S. Yadav +5 more
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Cool Carbon Stars in Open Clusters [PDF]
Symposium - International Astronomical Union, 1975 By combining lists of carbon stars with the catalogue of open clusters (Alter et al., 1970), a list of variable carbon stars, being probable members of clusters is given. The number of stars is too small to derive reliable statistics on cluster membership. Too few radial velocities are yet available.
A. Alksnis, Z. Alksne
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Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors
Population Ecology, EarlyView.Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley +1 more source
The Astrophysical Journal Supplement Series, 2023 Despite having data for over 10 ^9 stars from Gaia, less than 10 ^4 star clusters and candidates have been discovered. In particular, distant star clusters are rarely identified, due to the challenges posed by heavy extinction and great distance. However,
Zhihong He +7 more
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Interstellar Extinction in 20 Open Star Clusters [PDF]
Publications of the Astronomical Society of Australia, 2017 AbstractThe interstellar extinction law in 20 open star clusters namely, Berkeley 7, Collinder 69, Hogg 10, NGC 2362, Czernik 43, NGC 6530, NGC 6871, Bochum 10, Haffner 18, IC 4996, NGC 2384, NGC 6193, NGC 6618, NGC 7160, Collinder 232, Haffner 19, NGC 2401, NGC 6231, NGC 6823, and NGC 7380 have been studied in the optical and near-IR wavelength ranges.
Geeta Rangwal +3 more
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Making tau amyloid models in vitro: a crucial and underestimated challenge
FEBS Letters, EarlyView.This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
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