Central star of NGC 1514
Creators
Description
The large planetary nebula NGC 1514 has a central star classified as A0; the star's continuum was known to be composite. Coude' spectra show the presence of stellar He ii absorption, making it possible to resolve the stellar continuum into a horizontal-branch A star and a visually subluminous 0 star. Spectrophotometry of Balmer lines gives the surface gravity of the HB A star and thus its luminosity as Mv = +0.8; the 0 star has Mv = +2.8. If we adopt the parameters of the nebula from Kohoutek, the ultraviolet luminosity of the 0 star requires T 100,000 K, and Aib = -3.8, typical of a normal planetary nucleus. The velocity of the A star is constant, near +48 + 2 km 1. a redetermination of the nebular velocity gives accordant results, #41 t 5 km 1
Additional details
Identifiers
- DOI
- 10.1086/151426;
Publishing Information
- Journal Title
- The Astrophysical Journal
- Journal Volume
- 173
- Journal Issue
- 2
- Series
- Astrophys. J.
- Journal Page Range
- 367
- ISSN
- 0004-637X
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 3029962
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- GRAVITATION; LUMINOSITY; PLANETARY NEBULAE; SPECTRA; STARS; SURFACES; VELOCITY
- Descriptors DEC
- NEBULAE; OPTICAL PROPERTIES; PHYSICAL PROPERTIES
Optional Information
- Notes
- Updated automatically by Metadata and Full-Text Enrichment Agent