Published November 1989
| Version v1
Journal article
The peculiar planetary nebula in M22
Creators
- 1. NASA, Astrophysics Div., Washington, DC (USA)
- 2. Palomar Observatory, Pasadena, CA (USA)
Description
The source discovered by the IRAS satellite near the center of the globular cluster M22, IRAS 18333-2357, has been studied using the IUE satellite and a ground-based optical telescope. The northern component of the close pair of stars is not a member of the cluster. The southern component is a hot star with T(eff) of about 50,000 K illuminating a small planetary nebula and is a member of M22. Both the planetary nebula and its central star are extremely hydrogen deficient. The luminosity of the central star is in good agreement with that expected on theoretical grounds and with the observed luminosity of the tip of the red giant branch. 27 refs
Additional details
Publishing Information
- Journal Title
- Astrophysical Journal
- Journal Volume
- 346
- Series
- Astrophys. J.
- Journal Page Range
- 803-807
- ISSN
- 0004-637X
- CODEN
- ASJOA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 21041379
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- CHEMICAL COMPOSITION; ENERGY SPECTRA; HYDROGEN; INFRARED RADIATION; LUMINOSITY; PLANETARY NEBULAE; RED GIANT STARS; STAR CLUSTERS; WHITE DWARF STARS
- Descriptors DEC
- DWARF STARS; ELECTROMAGNETIC RADIATION; ELEMENTS; GIANT STARS; NEBULAE; NONMETALS; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; RADIATIONS; SPECTRA; STARS