Temperature and emission-measure distributions for several planetary nebulae
Journal Article
·
· Astrophys. J.; (United States)
Observations of BD + 30 deg 3639, NGC 6572, NGC 6590, and NGC 7027 were made at 6 cm and 20 cm with the VLA. From these data, two-dimensional distributions of temperature, emission measure, and optical depth assuming a constant line-of-sight temperature were derived. The temperature and emission-measure distributions, in general, are not similar. Temperatures for the four nebulae greatly vary, from a low of about 6000 K to a high of about 14,000 K. The results of NGC 7027 are especially interesting, since the temperature distribution is similar to the optical image. 23 references.
- Research Organization:
- Iowa State Univ. of Science and Technology, Ames; San Diego State Univ., CA
- OSTI ID:
- 5954733
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 317; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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