Physical Parameters of 59 Stars with Planets
نویسندگان
چکیده
منابع مشابه
Are Stars with Planets Polluted?
We compare the metallicities of stars with radial velocity planets to the metallicity of a sample of field dwarfs. We confirm recent work indicating that the stars-with-planet sample as a whole is iron rich. However, the lowest mass stars tend to be iron poor, with several having [Fe/H] < −0.2, demonstrating that high metallicity is not required for the formation of short period Jupiter-mass pl...
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Since the first massive planet in a short period orbit was discovered, the question arised how such an object could have formed. There are basically two formation scenarios: migration due to planet-disk or planet-planet interaction. Which of the two scenarios is more realistic can be found out by observing short-period planets of stars with an age between 10 and 10 yrs. The second aim of the su...
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Planets have been reported orbiting the Sun-like stars 1 Cnc, Boo o, and And based on low-amplitude radial velocity variations. We have derived 1 Based on observations made at Mount Wilson Observatory, operated by the Mount Wilson Institute under an agreement with the Carnegie Institution of Washington. information on the rst two stars from analysis of spectra, as well as parallel records of hi...
متن کاملOn the Nature of Stars with Planets
We consider the metallicities and kinematics of nearby stars known to have planetary-mass companions in the general context of the overall properties of the local Galactic Disk. We have used Strömgren photometry to determine abundances for both the extrasolar-planet host stars and for a volume-limited sample of 486 F, G and K stars selected from the Hipparcos catalogue. The latter data show tha...
متن کاملGalactic orbits of stars with planets ⋆
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 2004
ISSN: 0074-1809
DOI: 10.1017/s0074180900182385