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Record Details

Record 39 of 5875
Nova LMC 1990 no. 1: The first extragalactic neon nova
Offline Availability: Go to Request Form
Author and Affiliation:
Sonneborn, George(NASA Goddard Space Flight Center, Greenbelt, MD., United States)
Shore, Steven N.(Computer Sciences Corp., Greenbelt, MD., United States)
Starrfield, Sumner G.(Arizona State Univ., Tempe., United States)
Abstract: International Ultraviolet Explorer (IUE) observations of nova LMC (Large Magellanic Cloud) 1990 No. 1, the first neon (or ONeMg) nova observed outside the Galaxy are presented. The observations were obtained from 17 Jan. to Mar. 1990, with especially dense coverage during the first 25 days of the outburst. (The neon nova categorization is based on the detection of forbidden Ne 3-4 lines in optical spectra; the ultraviolet neon lines were not detected.) During the first 30 days of the outburst, the radiative losses were dominated by the N 5 delta 1240 and C 4 delta 1550 lines. The maximum ejection velocity was approximately 8000 km/s, based on the blue absorption edge of the C 4 P-Cygni profile. Early in the outburst of Nova LMC 1990 No. 1 the UV luminosity alone was approximately 3 times 10 to the 38th power erg/sec, implying that the bolometric luminosity was well in excess of the Eddington luminosity for a one solar mass object.
Publication Date: Aug 01, 1990
Document ID:
19910008630
(Acquired Nov 07, 1995)
Accession Number: 91N17943
Subject Category: ASTROPHYSICS
Document Type: Conference Paper
Publication Information: ESA, Evolution in Astrophysics: IUE Astronomy in the Era of New Space Missions; p 439-442
Publisher Information: United States
Contract/Grant/Task Num: NSF AST-88-18215; NAG5-481; NAG5-1393
Financial Sponsor: NASA; United States
Organization Source: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Description: 4p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Distribution within the U.S. granted by agreement
NASA Terms: EMISSION SPECTRA; LINE SPECTRA; MAGELLANIC CLOUDS; NEON; NOVAE; STELLAR RADIATION; ULTRAVIOLET SPECTRA; EXTRAGALACTIC RADIO SOURCES; IUE; STELLAR LUMINOSITY; STELLAR SPECTROPHOTOMETRY; ULTRAVIOLET ASTRONOMY
Imprint And Other Notes: In ESA, Evolution in Astrophysics: IUE Astronomy in the Era of New Space Missions p 439-442 (SEE N91-17861 09-90)
Miscellaneous Notes: Sponsored in part by DOE
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