Properties of the young gas giant planet β Pictoris b

Mickaël Bonnefoy, Anthony Boccaletti, Anne Marie Lagrange, France Allard, Christoph Mordasini, Hervé Beust, Gaël Chauvin, Julien H V Girard, Derek Homeier, Daniel Apai, Sylvestre Lacour, Daniel Rouan, Julien Rameau, Hubert Klahr

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The young (12+8 -4 Myr) and nearby (19.44±0.05 pc) star β Pictoris is considered one of the best laboratories for the study of early phases of planetary systems formation since the identification of an extended debris disk surrounding the star in 1984. In 2009, we imaged at 3.8 μm with NaCo at VLT a gas giant planet around β Pictoris, roughly along the disk mid-plane, with a semi-major axis between 8 and 14 AU. We present here the first images of the planet in the J (1.265 μm), H (1.66 μm), and M' (4.78 μm) bands obtained between 2011 and 2012. We used these data to build the 1-5 μm spectral energy distribution (SED) of the companion, and to consolidate previous semi-major axis (8-10 AU) estimates. We compared the SED to seven atmospheric models to derive Teff = 1700 ± 100 K. We used the temperature and the luminosity of β Pictoris b to estimate new masses for the companion. We compared these masses to independent constraints set by the orbital parameters and the radial velocities and use them to discuss the formation history of the object.

Original languageEnglish (US)
Title of host publicationProceedings of the International Astronomical Union
PublisherCambridge University Press
Pages241-246
Number of pages6
Volume8
EditionS299
ISBN (Print)9781107045200
DOIs
StatePublished - 2013

Publication series

NameProceedings of the International Astronomical Union
NumberS299
Volume8
ISSN (Print)17439213
ISSN (Electronic)17439221

Fingerprint

gas giant planets
spectral energy distribution
stars
atmospheric models
planetary systems
estimates
debris
radial velocity
planets
luminosity
histories
orbitals
temperature

Keywords

  • Atmosphere
  • Evolution
  • Exoplanets: formation
  • High angular resolution
  • Instrumentation: adaptive optics
  • Stars: β Pictoris

ASJC Scopus subject areas

  • Astronomy and Astrophysics

Cite this

Bonnefoy, M., Boccaletti, A., Lagrange, A. M., Allard, F., Mordasini, C., Beust, H., ... Klahr, H. (2013). Properties of the young gas giant planet β Pictoris b. In Proceedings of the International Astronomical Union (S299 ed., Vol. 8, pp. 241-246). (Proceedings of the International Astronomical Union; Vol. 8, No. S299). Cambridge University Press. https://doi.org/10.1017/S174392131300848X

Properties of the young gas giant planet β Pictoris b. / Bonnefoy, Mickaël; Boccaletti, Anthony; Lagrange, Anne Marie; Allard, France; Mordasini, Christoph; Beust, Hervé; Chauvin, Gaël; Girard, Julien H V; Homeier, Derek; Apai, Daniel; Lacour, Sylvestre; Rouan, Daniel; Rameau, Julien; Klahr, Hubert.

Proceedings of the International Astronomical Union. Vol. 8 S299. ed. Cambridge University Press, 2013. p. 241-246 (Proceedings of the International Astronomical Union; Vol. 8, No. S299).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Bonnefoy, M, Boccaletti, A, Lagrange, AM, Allard, F, Mordasini, C, Beust, H, Chauvin, G, Girard, JHV, Homeier, D, Apai, D, Lacour, S, Rouan, D, Rameau, J & Klahr, H 2013, Properties of the young gas giant planet β Pictoris b. in Proceedings of the International Astronomical Union. S299 edn, vol. 8, Proceedings of the International Astronomical Union, no. S299, vol. 8, Cambridge University Press, pp. 241-246. https://doi.org/10.1017/S174392131300848X
Bonnefoy M, Boccaletti A, Lagrange AM, Allard F, Mordasini C, Beust H et al. Properties of the young gas giant planet β Pictoris b. In Proceedings of the International Astronomical Union. S299 ed. Vol. 8. Cambridge University Press. 2013. p. 241-246. (Proceedings of the International Astronomical Union; S299). https://doi.org/10.1017/S174392131300848X
Bonnefoy, Mickaël ; Boccaletti, Anthony ; Lagrange, Anne Marie ; Allard, France ; Mordasini, Christoph ; Beust, Hervé ; Chauvin, Gaël ; Girard, Julien H V ; Homeier, Derek ; Apai, Daniel ; Lacour, Sylvestre ; Rouan, Daniel ; Rameau, Julien ; Klahr, Hubert. / Properties of the young gas giant planet β Pictoris b. Proceedings of the International Astronomical Union. Vol. 8 S299. ed. Cambridge University Press, 2013. pp. 241-246 (Proceedings of the International Astronomical Union; S299).
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