2009A&A...493L..21L


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.08CET20:03:53

2009A&A...493L..21L - Astronomy and Astrophysics, volume 493, L21-25 (2009/1-2)

A probable giant planet imaged in the β Pictoris disk. VLT/NaCo deep L'-band imaging.

LAGRANGE A.-M., GRATADOUR D., CHAUVIN G., FUSCO T., EHRENREICH D., MOUILLET D., ROUSSET G., ROUAN D., ALLARD F., GENDRON E., CHARTON J., MUGNIER L., RABOU P., MONTRI J. and LACOMBE F.

Abstract (from CDS):

Since the discovery of its dusty disk in 1984, {beta} Pictoris has become the prototype of young early-type planetary systems, and there are now various indications that a massive Jovian planet is orbiting the star at ∼10AU. However, no planets have been detected around this star so far. Our goal was to investigate the close environment of β Pic, searching for planetary companion(s). Deep adaptive-optics L'-band images of β Pic were recorded using the NaCo instrument at the Very Large Telescope. A faint point-like signal is detected at a projected distance of ≃8AU from the star, within the northeastern extension of the dust disk. Various tests were made to rule out possible instrumental or atmospheric artefacts at a good confidence level. The probability of a foreground or background contaminant is extremely low, based in addition on the analysis of previous deep HST images. Its L'=11.2 apparent magnitude would indicate a typical temperature of ∼1500K and a mass of ∼8MJup. If confirmed, it could explain the main morphological and dynamical peculiarities of the β Pic system. The present detection is unique among A-stars by the proximity of the resolved planet to its parent star. Its closeness and location inside the β Pic disk suggest a formation process by core accretion or disk instabilities rather than binary-like formation processes.

Abstract Copyright:

Journal keyword(s): instrumentation: adaptive optics - stars: early-type - stars: planetary systems - stars: individual: β Pic

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 1696 1
2 HD 44627 Ro* 06 19 12.9129838711 -58 03 15.524890610   10.01 9.205   8.185 K1V(e) 143 1
3 * N Car * 06 34 58.5799290 -52 58 32.191880 4.22 4.37 4.40     A0II 52 0
4 * 51 Peg Ro* 22 57 27.9804167474 +20 46 07.782240714 6.39 6.16 5.46 4.97 4.61 G2IV 1089 1

    Equat.    Gal    SGal    Ecl

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