H I spectrum of the symbiotic nova HM Sge

Journal Article · Fri Jun 01 04:00:00 EDT 1990 · Astronomical Journal; (USA)

DOI:https://doi.org/10.1086/115474· OSTI ID:6644443

Leahy, D A; Taylor, A R; Young, G ^[1]

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1. Calgary Univ. (Canada)

VLA observations are used to measure the H I spectrum of the symbiotic nova HM Sge. It is found that the H I column density to HM Sge is 4 x 10 to the 20th/sq cm and that the upper limit to the mass of circumstellar H I is 0.008 D-squared solar mass, with D equal to the distance to HM Sge in kparsecs. In addition, the spectrum of the quasar O V + 168 is used to show that the total Galactic H I column density in the direction of HM Sge is 9.5 x 10 to the 20th/sq cm. The implications of these results on the interpretation of other observations of HM Sge are discussed. 18 refs.

• OSTI ID: 6644443
• Journal Information: Astronomical Journal; (USA), Journal Name: Astronomical Journal; (USA) Vol. 99; ISSN 0004-6256; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC RADIO SOURCES
DENSITY
ELECTROMAGNETIC RADIATION
ELECTRON DENSITY
EMISSION SPECTRA
ERUPTIVE VARIABLE STARS
LIMITING VALUES
MASS
NOVAE
PHYSICAL PROPERTIES
QUASARS
RADIATIONS
RADIOWAVE RADIATION
SPECTRA
STARS
SYMBIOTIC STARS
VARIABLE STARS
X-RAY SPECTRA