Request for observations of Procyon
نویسندگان
چکیده
منابع مشابه
Modeling of αCen and Procyon using VLTI observations
We present a novel approach to model the nearby stars αCen A & B and Procyon A using asteroseismic and interferometric constraints. Using the VINCI instrument installed at the VLT Interferometer (VLTI), the angular diameters of the αCentauri system were measured with a relative precision of 0.2% and 0.6%, respectively. From these values, we derive linear radii of R[A] = 1.224±0.003R⊙ and R[B] =...
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The aim of this paper is to discuss the possible stellar origin of the observed excess power presented in Martic et al. (1999) by comparing these observational data with theoretical predictions and numerical simulations. Stellar models are calculated for Procyon A with appropriate physics for this star and with the revised astrometric mass (1.46 ± 0.04) M found by Girard (1998). For these model...
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Aims. Procyon A, a bright F5 IV-V Sun-like star, is justifiably regarded as a prime asteroseismological target. This star was repeatedly observed by MOST, a specialized microsatellite providing long-term, non-interrupted broadband photometry of bright targets. So far, the widely anticipated p modes eluded direct photometric detection, though numerous independent approaches hinted for the presen...
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Context. This paper reports a 9-night asteroseismic observation program conducted in January 2007 with the new spectrometer sophie at the OHP 193-cm telescope , on the F5 IV-V target Procyon A. Aims. This first asteroseismic program with sophie was intended to test the performance of the instrument with a bright but demanding asteroseismic target and was part of a multisite network. Methods. Th...
متن کاملOutlier test for a group of multivariate observations
Assume that we have m independent random samples each of size n from Np(; ) and our goal is to test whether or not the ith sample is an outlier (i=1,2,…..m). To date it is well known that a test statistics exist whose null distribution is Betta and given the relationship between Betta and F distribution, an F test statistic can be used. In the statistical literature however a clear and preci...
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ژورنال
عنوان ژورنال: Astronomische Nachrichten
سال: 1898
ISSN: 0004-6337,1521-3994
DOI: 10.1002/asna.18981470306