Published April 15, 1972 | Version v1
Journal article

Central star of NGC 1514

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

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
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