H I spectrum of the symbiotic nova HM Sge

Journal Article · Fri Jun 01 00:00:00 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), Vol. 99; ISSN 0004-6256
• Country of Publication: United States
• Language: English

Related Subjects

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