Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006apj...650..237h&link_type=abstract
The Astrophysical Journal, Volume 650, Issue 1, pp. 237-245.
Astronomy and Astrophysics
Astronomy
7
Stars: Circumstellar Matter, Infrared: Stars, Ism: Planetary Nebulae: General, Stars: Agb And Post-Agb, Stars: Mass Loss
Scientific paper
H2 emission has been detected in the bipolar proto-planetary nebula IRAS 17150-3224 from the 1-0 S(1), 1-0 S(0), and 2-1 S(1) transitions in the 2 μm region. Line ratios suggest that this emission is due to collisional excitation. High-resolution imaging with NICMOS on HST shows that the emission comes from four regions: clumps near the ends of the lobes (the brightest region), the lobes in general, a particular region outside the northwest lobe, and a faint loop in the equatorial region. Spatially resolved high-resolution spectra at 2.12 μm reveal that the H2 1-0 S(1) line has a velocity width of about 35 km s-1 in the lobes, consistent with C-type shocks. The emission from the clumps in the lobes appears to arise from the impact of a fast wind with the slower moving material in the AGB wind.
This work was based on observations with the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Institute, which is operated by AURA, Inc., under NASA contract NAS5-26555.
Hrivnak Bruce J.
Kelly Douglas M.
Kwok Sun
Sahai Raghvendra
Su Kate Y. L.
No associations
LandOfFree
A Study of H2 Emission in the Bipolar Proto-Planetary Nebula IRAS 17150-3224 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 A Study of H2 Emission in the Bipolar Proto-Planetary Nebula IRAS 17150-3224, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Study of H2 Emission in the Bipolar Proto-Planetary Nebula IRAS 17150-3224 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-869709