Results 271 to 280 of about 20,379 (296)
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Abundance of α-elements in red clump giants
Chinese Astronomy and Astrophysics, 2001Abstract Based on high-resolution, high signal-to-noise ratio spectra, we have analysed the abundance of five α elements (Mg, Si, S, Ca, Ti) in 17 red clump giants. The results show that the giants can be divided into two categories, one metal-rich, with metallicity [Fe/H]≥ 0.0, the other metal-poor, with [Fe/H]≤ −0.3.
Gang Zhao, Hong-mei Qiu, Hua-wei Zhang
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Identification of red clump giants by 2MASS photometric data
Kinematics and Physics of Celestial Bodies, 2009The infrared J, K-photometry of the 2MASS catalog has been used to identify red clump giants as well as to determine the distances to them and the interstellar extinction. Color-magnitude diagrams plotted for ten sky regions situated mostly near the galactic plane have been analyzed.
S. P. Rybka, A. I. Yatsenko
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Distance moduli of open cluster NGC 6819 from Red Giant Clump stars
New Astronomy, 2016Abstract In this paper we study Kepler open cluster NGC 6819 using Kepler data of Red Giant Clump (RGC) single member (SM) stars. The Kepler data spans a period of 4 years starting in 2009. In particular, we derive distance moduli for each individual RGC star, from which we get the mean distance modulus of μ0 = 11.520 ± 0.105 mag for the cluster when
O.P. Abedigamba, L.A. Balona, R. Medupe
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Thick disk kinematics from data on red clump giants at the north galactic pole
Kinematics and Physics of Celestial Bodies, 2009The distribution of radial (U) and rotational (V) velocities of red clump giants was studied as a function of their heights above the galactic plane. The stars of this type were selected from the compiled catalogue of stellar proper motions and infrared photometry at the north galactic pole with the use of the diagram “color-reduced proper motion ...
S. P. Rybka, A. I. Yatsenko
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2023
Galactic archaeology, a study of stellar populations to understand the formation history of the Milky Way, involves analysis of stellar properties, motions and chemical signatures. With the upcoming large scale surveys like WEAVE and 4MOST, we expect to leap frog our understanding of the evolution of our galaxy.
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Galactic archaeology, a study of stellar populations to understand the formation history of the Milky Way, involves analysis of stellar properties, motions and chemical signatures. With the upcoming large scale surveys like WEAVE and 4MOST, we expect to leap frog our understanding of the evolution of our galaxy.
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Peculiarities of galactic rotation in the solar neighborhood from the data on red clump giants
Kinematics and Physics of Celestial Bodies, 2008The three-dimensional Ogorodnikov-Milne model was used to investigate the local velocity field on the basis of the tangential velocities of more than 53 000 red giants which were identified as most probable Red Clump members from the Tycho-2 catalog.
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Giant virus biology and diversity in the era of genome-resolved metagenomics
Nature Reviews Microbiology, 2022Frederik Schulz +2 more
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Structural Chemistry of Giant Metal Based Supramolecules
Chemical Reviews, 2021Alexander V Virovets +2 more
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Giant magnetoelastic effect in soft systems for bioelectronics
Nature Materials, 2021Yihao Zhou, Jing Xu, Yunsheng Fang
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Mimivirus: leading the way in the discovery of giant viruses of amoebae
Nature Reviews Microbiology, 2017Philippe Colson +2 more
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