Zobrazeno 1 - 10
of 136
pro vyhledávání: '"Bruce W. Carney"'
Autor:
Bruce W. Carney, Alessandro Sozzetti, Sylvain G. Korzennik, Alan P. Boss, D. W. Latham, Guillermo Torres, Robert P. Stefanik, John B. Laird
Publikováno v:
Proceedings of the International Astronomical Union. 5:416-419
We present an analysis of three years of precision radial velocity measurements of 160 metal-poor stars observed with Keck/HIRES. We report on variability and long-term velocity trends for each star in our sample. We identify several long-term, low-a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad4edb211c3525593debb68e1608f5fe
https://doi.org/10.1017/s1743921310001110
https://doi.org/10.1017/s1743921310001110
Autor:
Robert P. Stefanik, John B. Laird, Guillermo Torres, David W. Latham, Sylvain G. Korzennik, Bruce W. Carney, Alan P. Boss, Alessandro Sozzetti
Publikováno v:
The Astrophysical Journal. 697:544-556
We present an analysis of three years of precision radial velocity measurements of 160 metal-poor stars observed with HIRES on the Keck 1 telescope. We report on variability and long-term velocity trends for each star in our sample. We identify sever
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90f2b3f7c4f882041b53d315bf94dbdc
https://doi.org/10.1088/0004-637x/697/1/544
https://doi.org/10.1088/0004-637x/697/1/544
Publikováno v:
The Astronomical Journal. 135:2033-2037
We do an initial reconnaissance of asymmetries of spectral lines in metal-poor field stars using high-resolution observations of four red horizontal-branch and 11 red giant branch stars taken with the coude spectrograph at the Canada-France-Hawaii Te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec07c0bc1f2e2449454859e45da05e87
https://doi.org/10.1088/0004-6256/135/6/2033
https://doi.org/10.1088/0004-6256/135/6/2033
Autor:
Robert P. Stefanik, John B. Laird, Guillermo Torres, David W. Latham, Alessandro Sozzetti, Bruce W. Carney, Sylvain G. Korzennik, Alan P. Boss
Publikováno v:
The Astrophysical Journal. 649:428-435
We describe a high-precision Doppler search for giant planets orbiting a well-defined sample of metal-poor dwarfs in the field. This experiment constitutes a fundamental test of theoretical predictions which will help discriminate between proposed gi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e1ecf47be2ec87dde48dcd1c24a04bc
https://doi.org/10.1086/506267
https://doi.org/10.1086/506267
Autor:
Guillermo Torres, Bruce W. Carney, David Yong, David W. Latham, John B. Laird, Alessandro Sozzetti
Publikováno v:
NASA Astrophysics Data System
We present a detailed chemical abundance analysis of the parent star of the transiting extrasolar planet TrES-1. Based on high-resolution Keck/HIRES and HET/HRS spectra, we have determined abundances relative to the Sun for 16 elements (Na, Mg, Al, S
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e0f7977308adafbac006b214ebf219ab
https://doi.org/10.1086/500639
https://doi.org/10.1086/500639
Publikováno v:
The Astronomical Journal. 129:1886-1905
We find a deficiency of binary stars moving on strongly retrograde Galactic orbits. No binary deficiencies are seen for U or W velocities, however. From theoretical analyses, we rule out preferential disruption of pre-existing binary stars due to enc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f07869366a63413ede54f29d00b558e4
https://doi.org/10.1086/427542
https://doi.org/10.1086/427542
Publikováno v:
The Astronomical Journal. 129:267-302
We have performed a detailed study of the pulsational and evolutionary characteristics of 133 RR Lyrae stars in the globular cluster NGC5272 (M3) using highly accurate BVI data taken on 5 separate epochs. M3 seems to contain no less than ~32% of Blaz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8df88a6efbdca1eec2cd138171958f80
https://doi.org/10.1086/426325
https://doi.org/10.1086/426325
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:
Mary-Margaret Brewer, Bruce W. Carney
Publikováno v:
Publications of the Astronomical Society of Australia. 21:134-137
We discuss our work on chemical abundance ratios of stars belonging to the thick-disk and thin-disk stellar populations. We discuss the selection of stars, and show that the two samples of stars have different [α/Fe] versus [Fe/H] behaviour.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7961e3c93ec747ae3336ffd5ec1e066
https://doi.org/10.1071/as04027
https://doi.org/10.1071/as04027
Autor:
C. Renée James, Bruce W. Carney, J. Craig Wheeler, Peter Höflich, Christopher Sneden, George W. Preston, Inese I. Ivans, J. P. Fulbright
Publikováno v:
The Astrophysical Journal. 592:906-934
We report the results of a coherent study of a new class of halo stars defined on the basis of the chemical compositions of three metal-poor objects (½Fe=H �’� 2) that exhibit unusually low abundances of � -element (Mg, Si, Ca) and neutron-c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::172f21b1f367c4cb2f0ba9877f14603f
https://doi.org/10.1086/375812
https://doi.org/10.1086/375812