Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Laird, John B."'
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
Kerzendorf, Wolfgang E., Schmidt, Brian P., Laird, John B., Podsiadlowski, Philipp, Bessell, Michael S.
Type Ia supernovae play a significant role in the evolution of the Universe and have a wide range of applications. It is widely believed that these events are the thermonuclear explosions of carbon-oxygen white dwarfs close to the Chandrasekhar mass
Externí odkaz:
http://arxiv.org/abs/1207.4481
Autor:
Carney, Bruce W., Gray, David F., Yong, David, Latham, David W., Manset, N., Zelman, R., Laird, John B.
We report the results for rotational velocities, Vrot sin i, and macroturbulence dispersion, zeta(RT), for 12 metal-poor field red giant branch stars and 7 metal-poor field red horizontal branch stars. The results are based on Fourier transform analy
Externí odkaz:
http://arxiv.org/abs/0711.4984
Publikováno v:
Astron.J.135:196-208,2008
We report 349 radial velocities for 45 metal-poor field red giant and red horizontal branch stars. We have have identified one new spectroscopic binary, HD 4306, and one possible such system, HD 184711. We also report 57 radial velocities for 11 of t
Externí odkaz:
http://arxiv.org/abs/0710.0392
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:
http://arxiv.org/abs/astro-ph/0412111
We report radial velocity studies of five candidate metal-poor field blue stragglers, all known to be deficient in lithium. Four of the five stars are single-lined spectroscopic binaries, with periods ranging from 302 to 840 days, and low orbital ecc
Externí odkaz:
http://arxiv.org/abs/astro-ph/0412110
Publikováno v:
Publications of the Astronomical Society of the Pacific, 1992 Mar 01. 104(673), 168-178.
Externí odkaz:
https://www.jstor.org/stable/40679843
Autor:
Sozzetti, Alessandro, Torres, Guillermo, Carney, Bruce W., Laird, John B., Latham, David W., Yong, David
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 Hobby-Eberly Telescope HRS spectra, we have determined abundances relative to the Sun for 16 elem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64df9eb26b1fe62d1505f760061fe478
Autor:
Laird, John B., Sozzetti, Alessandro, Latham, David W., Carney, Bruce W., Boss, Alan P., Torres, Guillermo, Stefanik, Robert P., Korzennik, Sylvain G.
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_________::575f829f5a1ce06fa4545ad172d7d031
Autor:
Laird, John B., Yong, David, Torres, Guillermo, Latham, David W., Sozzetti, Alessandro, Carney, Bruce W., Prieto, Carlos Allende, Charbonneau, David, Brown, Timothy M.
We report on a spectroscopic determination of the stellar parameters and chemical abundances for the parent star of the transiting planet TrES-1. Based on a detailed analysis of iron lines in our Keck and HET spectra we derive $T_\mathrm{eff} = 5250\
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ecc35eb1b4a665d83a1600620da14796