Hostname: page-component-78c5997874-4rdpn Total loading time: 0 Render date: 2024-11-10T01:32:51.585Z Has data issue: false hasContentIssue false

A possible dividing line between massive planets and brown-dwarf companions

Published online by Cambridge University Press:  10 November 2011

Johannes Sahlmann
Affiliation:
Observatoire de Genève, Université de Genève, 51 Chemin Des Maillettes, 1290 Sauverny, Switzerland. email: [email protected]
Damien Ségransan
Affiliation:
Observatoire de Genève, Université de Genève, 51 Chemin Des Maillettes, 1290 Sauverny, Switzerland. email: [email protected]
Didier Queloz
Affiliation:
Observatoire de Genève, Université de Genève, 51 Chemin Des Maillettes, 1290 Sauverny, Switzerland. email: [email protected]
Stéphane Udry
Affiliation:
Observatoire de Genève, Université de Genève, 51 Chemin Des Maillettes, 1290 Sauverny, Switzerland. email: [email protected]
Rights & Permissions [Opens in a new window]

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.

Brown dwarfs are intermediate objects between planets and stars. The lower end of the brown-dwarf mass range overlaps with the one of massive planets and therefore the distinction between planets and brown-dwarf companions may require to trace the individual formation process. We present results on new potential brown-dwarf companions of Sun-like stars, which were discovered using CORALIE radial-velocity measurements. By combining the spectroscopic orbits and Hipparcos astrometric measurements, we have determined the orbit inclinations and therefore the companion masses for many of these systems. This has revealed a mass range between 25 and 45 Jupiter masses almost void of objects, suggesting a possible dividing line between massive planets and sub-stellar companions.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2011

References

Benedict, G. F., McArthur, B. E., Bean, J. L., Barnes, R., Harrison, T. E., Hatzes, A., Martioli, E., & Nelan, E. P. 2010, AJ, 139, 1844CrossRefGoogle Scholar
Correia, A. C. M., Udry, S., Mayor, M., Laskar, J., Naef, D., Pepe, F., Queloz, D., & Santos, N. C. 2005, A&A, 440, 751Google Scholar
Diaz, R., The SOPHIE Consortium 2011, EPJ Web of Conferences, 11, 02006CrossRefGoogle Scholar
Grether, D. & Lineweaver, C. H. 2006, ApJ, 640, 1051CrossRefGoogle Scholar
Halbwachs, J. L., Mayor, M., Udry, S., & Arenou, F. 2003, A&A, 397, 159Google Scholar
Leconte, J., Baraffe, I., Chabrier, G., Barman, T., & Levrard, B. 2009, A&A, 506, 385Google Scholar
Lee, B. L., Ge, J., Fleming, S. W., et al. 2011, ApJ, 728, i.d32CrossRefGoogle Scholar
Lindegren, L. 2010, Proceedings IAU Symposium, 261, 296Google Scholar
Marcy, G. W. & Butler, R. P. 2000, PASP, 112, 137CrossRefGoogle Scholar
Sahlmann, J., Segransan, D., Queloz, D., Udry, S., Santos, N. C., Marmier, M., Mayor, M., Naef, D., Pepe, F., & Zucker, S. 2011, A&A, 525, A95Google Scholar
Santos, N. C., Mayor, M., Bonfils, X., Dumusque, X., Bouchy, F., Figueira, P., Lovis, C., Melo, C., Pepe, F., Queloz, D., Ségransan, D., Sousa, S. G., & Udry, S. 2011, A&A, 526, A112Google Scholar
Ségransan, D., Udry, S., Mayor, M., Naef, D., Pepe, F., Queloz, D., Santos, N. C., Demory, B.-O., Figueira, P., Gillon, M., Marmier, M., Mégevand, D., Sosnowska, D., Tamuz, O., & Triaud, A. H. M. J. 2010, A&A, 511, A45+Google Scholar
Sozzetti, A. & Desidera, S. 2010, A&A, 509, A26+Google Scholar
Udry, S., Mayor, M., Naef, D., Pepe, F., Queloz, D., Santos, N. C., Burnet, M., Confino, B., & Melo, C. 2000, A&A, 356, 590Google Scholar
Udry, S., Mayor, M., Naef, D., Pepe, F., Queloz, D., Santos, N. C., & Burnet, M. 2002, A&A, 390, 267Google Scholar
Wright, J. T., Upadhyay, S., Marcy, G. W., Fischer, D. A., Ford, E. B., & Johnson, J. A. 2009, ApJ, 693, 1084Google Scholar
Zucker, S. & Mazeh, T. 2001, ApJ, 562, 549CrossRefGoogle Scholar