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Title:
The infrared coronal lines of recent novae
Authors:
Greenhouse, Matthew A.; Grasdalen, G. L.; Woodward, C. E.; Benson, J.; Gehrz, R. D.; Rosenthal, E.; Skrutskie, M. F.
Affiliation:
AA(Wyoming Infrared Observatory, Laramie), AB(Wyoming Infrared Observatory, Laramie), AC(Wyoming Infrared Observatory, Laramie), AD(Wyoming Infrared Observatory, Laramie), AE(Minnesota, University, Minneapolis)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 352, March 20, 1990, p. 307-317. Research supported by the University of Minnesota and NSF. (ApJ Homepage)
Publication Date:
03/1990
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
INFRARED SPECTRA, METALLICITY, NOVAE, STELLAR CORONAS, STELLAR SPECTRA, ELECTRON ENERGY, LINE SPECTRA, NEAR INFRARED RADIATION, STELLAR SPECTROPHOTOMETRY
DOI:
10.1086/168537
Bibliographic Code:
1990ApJ...352..307G

Abstract

IR coronal line emissions are reported in the novae V1819 Cyg and V827 Her; high-resolution near-IR spectra of coronal line emission in the nova QU Vul have also been obtained, increasing the number of known IR coronal line novae from two to four. Each of the four is found to be characterized by approximately the same Si VI/Si VII line-intensity ratio, which indicates a common coronal-zone electron temperature of 300,000 K. The coronal-line novae are noted to possess a remarkably similar near-IR spectrum, suggesting that their coronal line emission will only occasionally be observed at optical wavelengths.

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