2003A&A...411..157M


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.17CET20:40:08

2003A&A...411..157M - Astronomy and Astrophysics, volume 411, 157-160 (2003/11-4)

First NACO observations of the brown dwarf LHS 2397aB.

MASCIADRI E., BRANDNER W., BOUY H., LENZEN R., LAGRANGE A.M. and LACOMBE F.

Abstract (from CDS):

Observations of the standard late type M8 star LHS 2397aA were obtained at the ESO-VLT 8 m telescope ``Yepun'' using the NAOS/CONICA Adaptive Optics facility. The observations were taken during the NACO commissioning, and the infrared standard star LHS 2397aA was observed in the H, and Ks broad band filters. In both bands the brown dwarf companion LHS 2397aB was detected. Using a program recently developed (Bouy et al., 2003AJ....126.1526B) for the detection of stellar binaries we calculated the principal astrometric parameters (angular binary separation and position angle PA) and the photometry of LHS 2397aA and LHS 2397aB. Our study largely confirms previous results obtained with the AO-Hokupa'a facility at Gemini-North (Freed et al., 2003ApJ...584..453F); however a few discrepancies are observed.

Abstract Copyright:

Journal keyword(s): stars: low-mass, brown dwarfs - stars: binaries: general - techniques: high angular resolution

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 LP 732-94 SB* 11 21 49.1720839605 -13 13 08.728765179   21.1 19.57     M8.5V 121 0
2 NAME LHS 2397 aB BD* ~ ~           ~ 2 0

    Equat.    Gal    SGal    Ecl

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2020.02.17-20:40:08

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