منابع مشابه
The Visual Orbit of • Pegasi
We have determined the visual orbit for the spectroscopic binary • Pegasi with interferometric visibility data obtained by the Palomar Testbed Interferometer in 1997. • Peg is a double-lined binary system whose minimum masses and spectral typing suggests the possibility of eclipses. Our orbital and component diameter determinations do not favor the eclipse hypothesis : the limb-to-limb separati...
متن کاملThe Planet around 51 Pegasi
Doppler measurements of 51 Pegasi have been made from 1995 October through 1996 August, with a precision of 5 m s~1. We Ðnd a period of 4.231 days, a velocity amplitude of 56^ 1 m s~1, and a velocity curve that is essentially sinusoidal, all in excellent agreement with Mayor & Queloz. The only viable interpretation is a companion having minimum mass, m sin i \ 0.45 in a circular orbit of MJupit...
متن کاملCalibration of ι Pegasi system
Recent observations provide determinations of individual masses, chemical composition and metallicity of the components of the spectroscopic and interferometric binary ι Peg (Boden et al. 1999). Using updated physics, to calibrate the system, we have computed using the stellar evolutionary code CESAM (Morel 1997), evolutionary sequences of stellar models with the masses of ι Peg A 1.326M and ι ...
متن کاملStellar atmospheric parameters for the giant stars μ Pegasi and λ Pegasi
Profiles of the strong lines Ca II 8542 Å and Mg I 8806 Å together with regions containing Ca I, Fe I and Fe II lines in the spectra of the G8 giant stars μ Peg and λ Peg have been recorded at high resolution and with signal/noise ≥ 100. The wings of the strong lines and the full profiles of intermediate strength lines are consistent with an LTE analysis based on the following sets of atmospher...
متن کاملPulsation and Orbit of AU Pegasi
AU Pegasi is a pulsating star in a spectroscopic binary system with an orbital period of 53.26 days. Between 1960 and 1990 an extremely rapid period increase was observed in the value of the pulsation period, but in the last 15 years the observation show that the period set in 2.411 days. Fourier analysis of photometric data obtained during the ASAS project and those taken at the Piszkéstető Mo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astronomische Nachrichten
سال: 1904
ISSN: 0004-6337,1521-3994
DOI: 10.1002/asna.19041670604