2011A&A...528L..15B


Query : 2011A&A...528L..15B

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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Number of rows : 8
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 b Pl 05 47 17.0876901 -51 03 59.441135           ~ 392 1
2 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 1718 1
3 HD 44627B BD* 06 19 12.94 -58 03 20.9           L1 115 1
4 TWA 27 LM* 12 07 33.4676156527 -39 32 54.016042897     19.95 17.99 15.88 M8IVe 316 0
5 TWA 27B BD* 12 07 33.50 -39 32 54.4           L3 251 0
6 2MASS J15491331-3539118 LM* 15 49 13.3081131346 -35 39 11.790418380           ~ 102 0
7 * alf Lyr dS* 18 36 56.33635 +38 47 01.2802 0.03 0.03 0.03 0.07 0.10 A0Va 2549 0
8 2MASS J22495345+0044046 BD* 22 49 53.45592 +00 44 04.6608           L3+L5 40 0

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2021.08.01-12:16:51

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