Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Tomkin, Jocelyn"'
Autor:
Tomkin, Jocelyn, Fekel, Francis C.
Publikováno v:
Astron.J.131:2652-2663,2006
Radial velocities from the 2.1 m telescope at McDonald Observatory supplemented with radial velocities from the coude' feed telescope at KPNO provide new precise orbits for the double-lined spectroscopic binaries RR Lyn (A3/A8/A6), 12 Boo (F8IV), and
Externí odkaz:
http://arxiv.org/abs/astro-ph/0601716
Autor:
Tomkin, Jocelyn
A new determination of the orbit of the Hyades double-lined spectroscopic binary HD 27149 is presented. The well-defined orbit provides the spectroscopic basis for an extremely accurate orbital parallax for the system -- in particular, the size of th
Externí odkaz:
http://arxiv.org/abs/astro-ph/0212454
Publikováno v:
Mon.Not.Roy.Astron.Soc. 340 (2003) 304
Photospheric abundances are presented for 27 elements from carbon to europium in 181 F-G dwarfs from a differential LTE analysis of high-resolution and high signal-to-noise spectra. Stellar $T_{\rm eff}$ were adopted from an infrared flux method cali
Externí odkaz:
http://arxiv.org/abs/astro-ph/0211551
Autor:
Rao, N. Kameswara, Lambert, David L., Adams, Mark T., Doss, David R., Gonzalez, Guillermo, Hatzes, Artie P., James, C. Renee, Johns-Krull, C. M., Luck, R. Earle, Pandey, Gajendra, Reinsch, Klaus, Tomkin, Jocelyn, Woolf, Vincent M.
A set of high-resolution optical spectra of RCrB acquired before, during, and after its 1995-1996 decline is discussed. All of the components reported from earlier declines are seen. This novel dataset provides new information on these components inc
Externí odkaz:
http://arxiv.org/abs/astro-ph/9907099
Autor:
Tomkin, Jocelyn, Lambert, David L.
We report the first extensive study of stellar Rb abundances. High-resolution spectra have been used to determine, or set upper limits on, the abundances of this heavy element and the associated elements Y, Zr, and Ba in 44 dwarfs and giants with met
Externí odkaz:
http://arxiv.org/abs/astro-ph/9905164
Publikováno v:
Astron.Astrophys. 327 (1997) 587
We have made new abundance determinations for a sample of NaMgAl stars. These stars, which are a subgroup of the nearby metal-rich field F and G disk dwarfs, were first identified by Edvardsson et al. (1993) on the basis of their apparent enrichment
Externí odkaz:
http://arxiv.org/abs/astro-ph/9707208
Autor:
Tomkin, Jocelyn, Lambert, David L.
Publikováno v:
Publications of the Astronomical Society of the Pacific, 1994 Apr 01. 106(698), 365-369.
Externí odkaz:
https://www.jstor.org/stable/40680406
Autor:
TOMKIN, JOCELYN, HUISONG, TAN
Publikováno v:
Publications of the Astronomical Society of the Pacific, 1985 Jan 01. 97(587), 51-53.
Externí odkaz:
https://www.jstor.org/stable/40678448
Autor:
FEKEL, FRANCIS C., TOMKIN, JOCELYN
Publikováno v:
Publications of the Astronomical Society of the Pacific, 1983 Dec 01. 95(574), 1000-1005.
Externí odkaz:
https://www.jstor.org/stable/40678270
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