Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic On-line Article (HTML)
· Citations to the Article (1) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Hydrogen Molecules in the Planetary Nebula NGC6302
Authors:
Matsuura, Mikako; Zijlstra, Albert
Publication:
High Resolution Infrared Spectroscopy in Astronomy, Proceedings of an ESO Workshop held at Garching, Germany, 18-21 November 2003. Edited by H.U. Käufl, R. Siebenmorgen, and A. Moorwood. Garching, Germany, 2005., pp. 423-426
Publication Date:
00/2005
Origin:
AUTHOR
DOI:
10.1007/10995082_67
Bibliographic Code:
2005hris.conf..423M

Abstract

NGC 6302 is the classical example of a planetary nebula with a bipolar shape. The bipolar ‘butterfly’ shape is often explained as caused by the fast wind of the central star colliding with a dense circumstellar disk. This disk should be compressible, i.e., molecular. The main constituent will be hydrogen molecules. H2 lines have been detected with ISO/SWS in NGC6302, covering the wavelength range 2 17 μm. The energy diagram of these lines shows a thermal population of 700 900 K. The expected temperature of H2 in the disk is 100 K or less. We conclude that the detected H2 should be located on the surface of the disk, and most of H2 in the cold disk is not detected. There is some indication of colder H2 seen in the 17 μm line. Further mid-infrared observations are desired.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints