Published November 15, 1972 | Version v1
Journal article Metadata-only

Spectroscopic observations of HZ Herculis

Creators

Description

Spectra have been obtained of HZ Her, the optical counterpart of the pulsating X-ray source Her X-1 (= 2U 1705+34), which show variable Ca ii K absorption, xx464O 650 and 686 emission, and He I absorption lines. The emission lines vary on a timescale as short as 30 . The Ca II and the He I features indicate a composite spectrum combining A- and B-star characteristics.

Additional details

Identifiers

DOI
10.1086/181071;

Publishing Information

Journal Title
The Astrophysical Journal
Journal Volume
178
Journal Issue
1
Series
Astrophys. J.
Journal Page Range
L5
ISSN
0004-637X

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
4054897
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
COSMIC X-RAY SOURCES; EMISSION; LUMINOSITY; SPECTRA; SPECTROSCOPY; STARS
Descriptors DEC
OPTICAL PROPERTIES; PHYSICAL PROPERTIES

Optional Information

Notes
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