SIMBAD references

2011A&A...528L..15B - Astronomy and Astrophysics, volume 528, L15-15 (2011/4-1)

High angular resolution detection of {beta] Pictoris b at 2.18 µm.

BONNEFOY M., LAGRANGE A.-M., BOCCALETTI A., CHAUVIN G., APAI D., ALLARD F., EHRENREICH D., GIRARD J.H.V., MOUILLET D., ROUAN D., GRATADOUR D. and KASPER M.

Abstract (from CDS):

A giant planet was recently discovered around the young star {beta} Pictoris. This planet is the closest to its parent star ever imaged. With an estimated mass of about 9MJup and separation of 8-15AU, it explains most of the peculiarities of {beta} Pictoris and its disk. Previous detections were made in the L' band (3.8µm) and at 4.05µm. We recorded new Ks-band data (2.18µm) in order to measure its color and get an additional estimate of its mass and effective temperature Angular differential Ks-band images of {beta} Pictoris were recorded with NaCo in March and April 2010. The companion is detected at Ks. This independently confirms the physical nature of {beta} Pictoris b inferred from the L' and NB_4.05 bands. The increase of the projected separation between October-December 2009 and April 2010 observations is consistent within error bars with the expected orbital motion. Using the absolute Ks photometry, ``hot start'' evolutionary models predict a mass of 7-11MJup in agreement with previous estimates. Moreover, this mass is compatible with Teff=1700±300K derived from the comparison of the Ks-L' color with those generated using synthetic spectra.

Abstract Copyright:

Journal keyword(s): instrumentation: adaptive optics - stars: early-type - planetary systems - stars: individual {beta} Pictoris

Simbad objects: 8

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2019.09.17-03:14:10

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