Astronomy and Astrophysics – Astrophysics
Scientific paper
1999-03-13
Astron.Astrophys.344:L9-L12,1999
Astronomy and Astrophysics
Astrophysics
4 pages, 3 figures, use A&A style files
Scientific paper
We report the detection of the H2 v=1-0 S(1) line at 2.122um, from RNO91 in the L43 dark cloud, which is known to be a T Tauri star surrounded by a 1700AU disk structure (containing ices) and a weak outflow. The non-detection of the H2 v=2-1 S(1) line at 2.247um suggests shock excitation rather than fluorescence. The emission is extended spatially up to 9arcsec in the north-south direction. The line intensity peak (FWHM 3arcsec) corresponds to the star RNO91 which is embedded in a cocoon of gas and dust. The observed H2 emission from this cocoon may be attributed to embedded Herbig-Haro like knots. The H2 line flux in the central 2"X3"is estimated to be 7X10^{-14} ergs/sec/cm^{2}, which indicates a mass flow rate of 4X10^{-8} M_{sun}/yr. Furthermore, narrow band image taken through H2 1-0 S(1) filter is presented, which reveal a tilted disk and bipolar outflow structure that agrees with earlier observations and models. We show that this disk/outflow system is a unique case.
Anandarao Boddapati G.
Davis Christopher J.
Nanda Kumar M. S.
No associations
LandOfFree
Shocked Molecular Hydrogen from RNO91 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Shocked Molecular Hydrogen from RNO91, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shocked Molecular Hydrogen from RNO91 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-425806