Results 11 to 20 of about 73,056 (308)
CCD Photometry Using Multiple Comparison Stars [PDF]
Journal of Astronomy and Space Sciences, 2004 The accuracy of CCD observations obtained at the Korean 1.8 m telescope has been studied. Seventeen comparison stars in the vicinity of the cataclysmic variable BG CMi have been measured.
Yonggi Kim +2 more
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Multiplicity of Massive Stars [PDF]
Symposium - International Astronomical Union, 2001 We discuss the observed multiplicity of massive stars and implications on theories of massive star formation. After a short summary of the literature on massive star multiplicity, we focus on the O-and B-type stars in the Orion Nebula Cluster, which constitute a homogenous sample of very young massive stars.
Preibisch, Thomas +2 more
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Multiple Populations in Star Clusters
Universe, 2022 We review the multiple population (MP) phenomenon of globular clusters (GCs): i.e., the evidence that GCs typically host groups of stars with different elemental abundances and/or distinct sequences in photometric diagrams. Most Galactic and extragalactic clusters exhibit internal variations of He, C, N, O, Na, and Al.
Milone, Antonino P, Marino, AF
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ULTRACOMPACT STARS WITH MULTIPLE NECKS [PDF]
Modern Physics Letters A, 2002 We discuss ultracompact stellar objects which have multiple necks in their optical geometry. There are in fact physically reasonable equations of state for which the number of necks can be arbitrarily large. The proofs of these statements rely on a recent regularized formulation of the field equations for static spherically symmetric models due to ...
Karlovini, Max +2 more
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A CONGRUENCE BETWEEN SYMMETRIC MULTIPLE ZETA-STAR VALUES AND MULTIPLE ZETA-STAR VALUES
Kyushu Journal of Mathematics, 2021 The authors studied on some congruence relations among symmetric multiple zeta functions, called symmetric multiple zeta-star values and multiple zeta-star values. They showed a congruence between symmetric multiple zeta-star values and multiple zeta-star values.
Fujita, Kento, Komori, Yasushi
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CCD measurements of double and multiple stars at NAO Rozhen. IV [PDF]
Serbian Astronomical Journal, 2010 Using the 2 m telescope of the Bulgarian National Astronomical Observatory at Rozhen observations of 30 double or multiple stars were carried out during two half nights on July 20 and 21, 2009.
Cvetković Zorica +2 more
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A Catalog of Nearby Accelerating Star Candidates in Gaia DR3
The Astronomical Journal, 2023 We describe a new catalog of accelerating star candidates with Gaia G ≤ 17.5 mag and distances d ≤ 100 pc. Designated as the Gaia Nearby Accelerating Star Catalog (GNASC), it contains 29,684 members identified using a supervised machine-learning ...
Marc L. Whiting +3 more
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CCD measurements of double and multiple stars at NAO Rozhen. III [PDF]
Serbian Astronomical Journal, 2007 Using the 2-m telescope of the Bulgarian National Astronomical Observatory at Rozhen, observations of 55 multiple stars were carried out during one night, December 16/17. 2006.
Cvetković Z. +4 more
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Multiplicity among chemically peculiar stars [PDF]
Astronomy & Astrophysics, 2002 We present new orbits for sixteen Ap spectroscopic binaries, four of which might in fact be Am stars, and give their orbital elements. Four of them are SB2 systems: HD 5550, HD 22128, HD 56495 and HD 98088. The twelve other stars are : HD 9996, HD 12288, HD 40711, HD 54908, HD 65339, HD 73709, HD 105680, HD 138426, HD 184471, HD 188854, HD 200405 and ...
Carrier, F. +3 more
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Atmospheric and Fundamental Parameters of the Individual Components of Multiple Stellar Systems
The Astronomical Journal, 2023 We present detailed analyses of eight triple stellar systems (lying between 20 and 155 pc) and nine quadruple stellar systems (lying between 20 and 250 pc) with different configurations. Most of these systems are hierarchical.
Enas M. Abu-Alrob +2 more
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