Near-infrared spectroscopy of classical novae in the coronal phase

Journal Article · Thu Nov 01 04:00:00 EST 1990 · Astronomical Journal; (USA)

DOI:https://doi.org/10.1086/115619· OSTI ID:5980111

Benjamin, R A; Dinerstein, H L ^[1]

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1. Texas Univ., Austin (USA)

Spectroscopic observations of V1819 Cyg, V827 Her, and V2214 Oph, obtained at 1-2.5 microns using a 32-channel InSb array detector at the Cassegrain focus of the 2.7-m telescope at McDonald Observatory during 1986-1989, are reported. The data are presented in extensive tables and graphs and characterized in detail, with a focus on the nature of the coronal emission. The ratios of Br-gamma (2.167 microns) and forbidden Si VI (1.960 microns) are found to be consistent with coronal gas temperatures of about 10,000 K and with photoionization as the primary mechanism of origin for the coronal species. Severe constraints on theoretical models involving shock heating and collisional ionization are inferred. 50 refs.

• OSTI ID: 5980111
• Journal Information: Astronomical Journal; (USA), Journal Name: Astronomical Journal; (USA) Vol. 100; 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
ATMOSPHERES
ELECTROMAGNETIC RADIATION
ENERGY-LEVEL TRANSITIONS
ERUPTIVE VARIABLE STARS
FORBIDDEN TRANSITIONS
HEATING
INFRARED RADIATION
IONIZATION
MASS TRANSFER
MATHEMATICAL MODELS
NEAR INFRARED RADIATION
NOVAE
PHOTOIONIZATION
RADIATIONS
SPECTROSCOPY
STAR EVOLUTION
STAR MODELS
STARS
STELLAR ATMOSPHERES
STELLAR CORONAE
TABLES
VARIABLE STARS