Results 41 to 50 of about 6,328,275 (332)

CCD measurements of double and multiple stars at NAO Rozhen [PDF]

open access: yesSerbian Astronomical Journal, 2005
With the 2-m telescope of the Bulgarian National Astronomical Observatory at Rozhen observations of fifteen multiple stars were carried out during one night - October 17/18, 2004.
Pavlović Rade M.   +5 more
doaj   +1 more source

Intellectual capital and productivity of managers: The case study of hotel industry in Serbia

open access: yesBizInfo, 2022
Intellectual capital is the part of intangible assets that affects value creation. Intellectual capital includes human capital, structural capital, and customer capital.
Jasmina Ognjanović   +2 more
doaj   +1 more source

Binary interactions as a possible scenario for the formation of multiple stellar populations in globular clusters

open access: yes, 2014
Observations revealed the presence of multiple stellar populations in globular clusters (GCs) that exhibit wide abundance variations and multiple sequences in Hertzsprung-Russell (HR) diagram.
Han, Zhanwen, Jiang, Dengkai, Li, Lifang
core   +1 more source

Unresolved Binaries and Multiples in the Intermediate Mass Range in Open Clusters: Pleiades, Alpha Per, Praesepe, and NGC 1039

open access: yesThe Astronomical Journal, 2023
In this study, we continue our project to search for unresolved binary and multiple systems in open clusters exploiting the photometric diagram (H–W2)–W1 versus W2–(BP–K) first introduced in Malofeeva et al. In particular, here we estimate the binary and
Alina A. Malofeeva   +3 more
doaj   +1 more source

Hot Magnetic Stars in Exotic Multiple Systems [PDF]

open access: yesEPJ Web of Conferences, 2020
A strong and stable magnetic field covering the whole surface is a landmark of chemically peculiar or CP stars. To explain the origin of mag- netic stars, several hypotheses were proposed, which depending on the mech- anism and time of formation can be ...
Semenko Eugene
doaj   +1 more source

CCD Photometry Using Multiple Comparison Stars [PDF]

open access: yesJournal 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
doaj   +1 more source

The Great Escape II: Exoplanet Ejection from Dying Multiple Star Systems

open access: yes, 2012
Extrasolar planets and belts of debris orbiting post-main-sequence single stars may become unbound as the evolving star loses mass. In multiple star systems, the presence or co-evolution of the additional stars can significantly complicate the prospects ...
Tout, Christopher A., Veras, Dimitri
core   +1 more source

BSDB: A New Consistent Designation Scheme for Identifying Objects in Binary and Multiple Stars

open access: yes, 2015
The new consistent scheme for designation of objects in binary and multiple systems, BSDB, is described. It was developed in the frame of the Binary star DataBase, BDB (http://www.inasan.ru), due to necessity of a unified and consistent system for ...
D. Kovaleva   +4 more
semanticscholar   +1 more source

Investigation of a W UMa-type contact binary GZ And in a physical triple system

open access: yesFrontiers in Astronomy and Space Sciences
GZ And is a variable star within the visually observed multiple-star system ADS 1693. Recent observations have yielded new light curves for GZ And, obtained using the Xinglong 85-cm telescope and the Transiting Exoplanet Survey Satellite (TESS) satellite.
Lin-Qiao Jiang   +3 more
doaj   +1 more source

Precision Astrometry of a Sample of Speckle Binaries and Multiples with the Adaptive Optics Facilities at the Hale and Keck II Telescopes [PDF]

open access: yes, 2009
Using the adaptive optics facilities at the 200-in Hale and 10-m Keck II, we observed in the near infrared a sample of 12 binary and multiple stars and one open cluster. We used the near diffraction limited images of these systems to measure the relative
Al-Shukri   +50 more
core   +2 more sources

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