Results 61 to 70 of about 5,935,155 (266)
POLARIS (α UMi),- MULTISTELLAR SYSTEM IN THE OPEN CLUSTER
Odessa Astronomical Publications, 2007 We present the results of our analysis of high-resolution spectroscopic observations of Cepheid α UMi (Polaris A) and main-sequence type stars Polaris B and HD 5914, - optical companion and a member of Polaris open cluster. The last ones are objects with
I. A. Usenko +3 more
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The Astronomical JournalNGC 2506 is a rich, intermediate-age (2.0 Gyr), metal-poor ([Fe/H] ∼ −0.2) open cluster. This work presents the results of 12,157 spectroscopic radial-velocity measurements of 2442 stars in the NGC 2506 field obtained over 41 yr, made as part of the WIYN
Evan Linck +2 more
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Formation of Open Clusters [PDF]
Symposium - International Astronomical Union, 1980 A forming star progresses through several evolutionary stages which are marked by different observational signs that can be identified by different techniques. Stellar birth from interstellar matter occurs in dense, cold clouds of gas due to a local increase in the density and interstellar clouds composed of molecules and grains are the preferential ...
openaire +1 more source
Hunting for open clusters inGaiaEDR3: 628 new open clusters found with OCfinder
Astronomy & Astrophysics, 2022 Context.The improvements in the precision of the published data inGaiaEDR3 with respect toGaiaDR2, particularly for parallaxes and proper motions, offer the opportunity to increase the number of known open clusters in the Milky Way by detecting farther and fainter objects that have thus far gone unnoticed.Aims.Our aim is to continue to complete the ...
A. Castro-Ginard +8 more
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Iterative parallel reconstruction of images on OPEN- POWER cluster
Системный анализ и прикладная информатика, 2019 Now one of the most important tasks is development and adaptation of iterative methods for the solution of the big rarefied systems of the algebraic equations.
S. A. Zolotarev +2 more
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Distant Galactic Open Clusters [PDF]
Symposium - International Astronomical Union, 1980 The motivation for studying distant open clusters primarily arose out of a desire to gain some understanding of star formation processes in the general context of galactic structure. Of specific interest are faint open clusters (c.f. Alter, Balázs and Ruprecht 1970) near the galactic anticenter which are part of a larger survey of objects which may be ...
openaire +1 more source
WIYN OPEN CLUSTER STUDY. LX. SPECTROSCOPIC BINARY ORBITS IN NGC 6819 [PDF]
, 2014 We present the current state of the WOCS radial-velocity (RV) survey for the rich open cluster NGC 6819 (2.5 Gyr) including 93 spectroscopic binary orbits with periods ranging from 1.5 to 8000 days.
K. Milliman +5 more
semanticscholar +1 more source
SODIUM AND OXYGEN ABUNDANCES IN THE OPEN CLUSTER NGC 6791 FROM APOGEE H-BAND SPECTROSCOPY [PDF]
, 2014 The open cluster NGC 6791 is among the oldest, most massive, and metal-rich open clusters in the Galaxy. High-resolution H-band spectra from the Apache Point Observatory Galactic Evolution Experiment (APOGEE) of 11 red giants in NGC 6791 are analyzed for
K. Cunha +29 more
semanticscholar +1 more source
THREE GIANTS – MEMBERS OF THE OPEN CLUSTER M 67
Odessa Astronomical Publications, 2017 We determined the atmospheric parameters and chemical composition of the three giants, which are members of the open cluster M 67. The high resolution spectra (R = 60 000) were obtained with the echelle spectrograph NES mounted on
T. Mishenina +6 more
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Investigating Stellar Variability in the Open Cluster Region NGC 381
The Astronomical Journal, 2023 We study variable stars in the field of the open cluster NGC 381 using photometric data observed over 27 nights and identify a total of 57 variable stars, six of which are member stars. The variable stars are classified based on their periods, amplitudes,
Jayanand Maurya +3 more
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