Abstract
view Abstract Citations (97) References (15) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Discovery of a nonsolar extreme-ultraviolet source. Lampton, M. ; Margon, B. ; Paresce, F. ; Stern, R. ; Bowyer, S. Abstract Results are reported for observations of EUV emission from an extrasolar object which were made with a grazing-incidence telescope during the Apollo-Soyuz mission. The total energy flux in the spectral band between 170 and 620 A is estimated to be approximately 4 by 10 to the -9th power erg/sq cm per sec. It is shown that the data support the identification of the EUV object with the ultrasoft X-ray source in Coma Berenices. The source of both emissions is suggested to be the hot white dwarf HZ 43, located at right ascension 13 hr 43 min and declination +29 deg 22 min (1950). The temperature of HZ 43 is estimated as 110,000 K, giving it the highest temperature of any known white dwarf. Publication: The Astrophysical Journal Pub Date: January 1976 DOI: 10.1086/182022 Bibcode: 1976ApJ...203L..71L Keywords: Far Ultraviolet Radiation; Radiation Sources; Stellar Spectrophotometry; X Ray Sources; Apollo Soyuz Test Project; Apollo Telescope Mount; Black Body Radiation; Extraterrestrial Radiation; Grazing Incidence Telescopes; Spectral Energy Distribution; White Dwarf Stars; Astronomy full text sources ADS | data products SIMBAD (2) Related Materials (1) Part 2: 1976ApJ...209..525M
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