Hostname: page-component-76fb5796d-vvkck Total loading time: 0 Render date: 2024-04-26T02:33:44.149Z Has data issue: false hasContentIssue false
  • English
  • Français

Physical Parameters of 59 Stars with Planets

Published online by Cambridge University Press:  26 May 2016

G. Cayrel de Strobel
G. Cayrel de Strobel*
Affiliation:
Observatoire de Paris-Meudon, 5 place Jules Janssen F92195 Meudon cedex France

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Astrometric, kinematic, spectroscopic and internal stellar structure data of 59 out of 102, extra-solar planet stars (thereafter ESPs), as yet discovered, are herewith discussed. The remaining 43 have been discarded, because they are not yet subjected to detailed spectroscopic analyses. The assembling of true physical parameters of ESPs has been made with the help of the Hipparcos and the [Fe/H] Catalogues. The retained 59 ESPs, could be divided into three sub-samples: midly metal poor, metal normal and metal enriched ESPs. Three observational (logTeff, Mbol) diagrams for each of the metallicity groups have been constructed and interpreted with the help of theoretical HR diagrams, computed for metal-poor, metal-normal, and metal-rich internal structure models. The age of 47 evolved ESPs of the sample has been estimated from the relevant isochrones. Even if the age difference between some of the ESPs is great, (from 1 to >12 Gyr) stars as young as the Hyades (670 Myr) have not been found. ESPs are biased towards metallicities higher than solar. In this sample the number of ESPs with metallicity [Fe/H]>0 is 2.4 times the number of ESPs with [Fe/H] < 0, whereas the proportion is roughly inverted in a sample of non ESPs.

Type
Part 7: Cool Stars and their Planets
Information
Symposium - International Astronomical Union , Volume 219: Stars as Suns : Activity, Evolution and Planets , 2004 , pp. 395 - 399
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

Alonso, A., Arribas, S., & Martinez-Roger, C. 1996, A & A, 313, 873.Google Scholar
Cayrel de Strobel, G., Soubiran, C. & Ralite, N. 2001, 373, 159.Google Scholar
Cayrel de Strobel, G. et al., 1981, A & A 94, 1.Google Scholar
Cayrel de Strobel, G., & Bentolila, C., 1989, A & A, 211, 324.Google Scholar
ESA 1997, The Hipparcos and Tycho Catalogues ESA SP-1200, Noordwijk:ESA.Google Scholar
Friel, E.D., Cayrel de Strobel, G., Chmiielewski, , et al., 1993, A & A, 274, 825.Google Scholar
Gonzalez, G., Laws, C., Tyagi, S., & Reddy, E., 2001, AJ 121, 432.Google Scholar
Lebreton, Y. 2000 ARA & A 38, 35.Google Scholar
Santos, N.C., Israelian, G. Mayor, M. Rebolo, R. & Udry, S. 2003, A & A, 398, 376.CrossRefGoogle Scholar
Schneider, J. 2000, “Extrasolar Planets Encyclopedia”, http://www.obspm.fr/encycl.html.Google Scholar