Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Suchitra Balachandran"'
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 410:2526-2539
Lithium abundances are presented and discussed for 70 members of the 50 Myr old open cluster alpha Per. More than half of the abundances are from new high-resolution spectra. The Li abundance in the F-type stars is equal to its presumed initial abund
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03c022c0bc5cccffd87c213981d5a817
https://doi.org/10.1111/j.1365-2966.2010.17630.x
https://doi.org/10.1111/j.1365-2966.2010.17630.x
Publikováno v:
The Astronomical Journal. 128:2388-2401
We present high-resolution infrared echelle spectroscopy for the globular clusters Palomar 6 and M71. Our mean heliocentric radial velocity of Palomar 6 is +180.6 +/- 3.2 km sec/s and is 20 km/s lower than that found by Minniti in 1995. Contrary to t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::369e9ba0c3a3ed8dce5c83bf1cd0da45
https://doi.org/10.1086/425047
https://doi.org/10.1086/425047
Autor:
Suchitra Balachandran
Publikováno v:
International Astronomical Union Colloquium. 137:333-346
This is a review of our understanding of the effects of rotation on the stellar interior through an examination of observed surface stellar abundances. First, the evolution of angular momentum from the pre-main sequence through the giant phase is sum
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a62289705073c974cb8c69c3bab0b6d2
https://doi.org/10.1017/s0252921100018030
https://doi.org/10.1017/s0252921100018030
Autor:
Suchitra Balachandran
Publikováno v:
Highlights of Astronomy ISBN: 9780792335542
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd7ed853ebe0079f62acb8c928a88c5a
https://doi.org/10.1007/978-94-010-9374-3_73
https://doi.org/10.1007/978-94-010-9374-3_73
Publikováno v:
Infrared Astronomy with Arrays ISBN: 9789401044660
Since oxygen represents one half of all atoms of elements other than hydrogen and helium, its abundance is crucial in fundamental astrophysical contexts like the ages of globular clusters and the rate of chemical evolution in the Galaxy. However the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bddf828fac84ad66aeb5708013b57d09
https://doi.org/10.1007/978-94-011-1070-9_163
https://doi.org/10.1007/978-94-011-1070-9_163
Publikováno v:
Symposium - International Astronomical Union. 198:373-374
We use Hipparcos parallaxes to determine the evolutionary status and the nature of the so-called Li-rich giants. These informations clearly support the hypothesis of internal nuclear lithium enrichment by an extra-mixing process at two distinct evolu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0b2e8265f19935d5f79e88532243d05
https://doi.org/10.1017/s0074180900166914
https://doi.org/10.1017/s0074180900166914
Publikováno v:
The Astrophysical Journal. 470:1243
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5e6a706013f9fd57ca616f76eb92b42
https://doi.org/10.1086/177947
https://doi.org/10.1086/177947
Autor:
Bruce W. Carney, Suchitra Balachandran
Publikováno v:
The Astronomical Journal. 111:946
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::003f2585de496387377d74b93b7ec75f
https://doi.org/10.1086/117842
https://doi.org/10.1086/117842
Autor:
Suchitra Balachandran
Publikováno v:
The Astrophysical Journal. 446:203
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19493f29a9fd0af6c68b8ab818cb7969
https://doi.org/10.1086/175779
https://doi.org/10.1086/175779
Publikováno v:
The Astrophysical Journal. 413:368
We report the finding of an unusually large lithium abundance in the tidally locked binary halo star HD 89499. The effective temperature of this star has been determined to be 4900±150 K from photometric and spectroscopic analyses. Its metallicity h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5aaddca9b0c62b6015c5915826e33d5b
https://doi.org/10.1086/173005
https://doi.org/10.1086/173005