2012ApJ...761..120W


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.07CET21:07:56

2012ApJ...761..120W - Astrophys. J., 761, 120 (2012/December-3)

Spatially resolved observations of the bipolar optical outflow from the brown dwarf 2MASS J12073347-3932540.

WHELAN E.T., RAY T.P., COMERON F., BACCIOTTI F. and KAVANAGH P.J.

Abstract (from CDS):

Studies of brown dwarf (BD) outflows provide information pertinent to questions on BD formation, as well as allowing outflow mechanisms to be investigated at the lowest masses. Here new observations of the bipolar outflow from the 24 MJUP BD 2MASS J12073347-3932540 are presented. The outflow was originally identified through the spectro-astrometric analysis of the [O I]λ6300 emission line. Follow-up observations consisting of spectra and [S II], R-band and I-band images were obtained. The new spectra confirm the original results and are used to constrain the outflow position angle (P.A.) at ∼65°. The [O I]λ6300 emission line region is spatially resolved and the outflow is detected in the [S II] images. The detection is firstly in the form of an elongation of the point-spread function (PSF) along the direction of the outflow P.A. Four faint knot-like features (labeled A-D) are also observed to the southwest of 2MASS J12073347-3932540 along the same P.A. suggested by the spectra and the elongation in the PSF. Interestingly, D, the feature furthest from the source, is bow shaped with the apex pointing away from 2MASS J12073347-3932540. A color-color analysis allows us to conclude that at least feature D is part of the outflow under investigation while A is likely a star or galaxy. Follow-up observations are needed to confirm the origin of B and C. This is a first for a BD, as BD optical outflows have to date only been detected using spectro-astrometry. This result also demonstrates for the first time that BD outflows can be collimated and episodic.

Abstract Copyright:

Journal keyword(s): ISM: jets and outflows - stars: pre-main sequence

Simbad objects: 11

goto Full paper

goto View the reference in ADS

Number of rows : 11

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 SN 2007Y SN* 03 02 35.92 -22 53 50.1     17.5     SNIb 84 1
2 NGC 1187 EmG 03 02 37.5891179515 -22 52 02.463111425   11.41   10.43 11.2 ~ 191 1
3 HH 212 HH 05 43 51.41 -01 02 53.1           ~ 257 1
4 NAME TW Hya Association As* 11 01.9 -34 42           ~ 795 0
5 NAME Cha I MoC 11 06 48 -77 18.0           ~ 942 1
6 2MASS J11160287-7624533 Y*O 11 16 02.7637412498 -76 24 53.241656215     19.60   17.25 K8 20 0
7 TWA 27 BD* 12 07 33.467 -39 32 54.00     19.95 17.99 15.88 M8Ve 305 1
8 TWA 27B BD* 12 07 33.50 -39 32 54.4           L5 229 1
9 V* V1192 Sco Or* 16 08 51.4339982240 -39 05 30.468181083     21.9 18.97 18.18 M5 57 0
10 [GY92] 204 Y*O 16 27 06.5924723987 -24 41 48.883697790       17.57 15.43 M5 78 0
11 HH 600 HH ~ ~           ~ 8 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2012ApJ...761..120W and select 'bookmark this link' or equivalent in the popup menu


2019.12.07-21:07:56

© Université de Strasbourg/CNRS

    • Contact