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Record Details

Record 58 of 1615
Diffuse X-ray emission from the Dumbbell Nebula?
External Online Source: doi:10.1086/116671
Author and Affiliation:
Chu, You-Hua(Illinois Univ., Urbana, United States)
Kwitter, Karen B.(Williams College, Williamstown, MA, United States)
Kaler, James B.(Illinois Univ., Urbana, United States)
Abstract: We have analyzed ROSAT Position Sensitive Proportional Counter pointed observations of the Dumbbell Nebula and find that the previously reported 'extended' X-ray emission is an instrumental electronic ghost image at the softest energy band. At slightly higher energy bands, the image of the Dumbbell is not very different from that of the white dwarf HZ43. We conclude that the X-ray emission of the Dumbbell Nebula comes from its central star. A blackbody model is fitted to the spectrum and the best-fit temperature of not greater than 136,000 +/- 10,000 K is in excellent agreement with the Zanstra temperatures.
Publication Date: Aug 01, 1993
Document ID:
19930066924
(Acquired Dec 28, 1995)
Accession Number: 93A50921
Subject Category: ASTROPHYSICS
Document Type: Journal Article
Publication Information: Astronomical Journal; p. p. 650-655.; (ISSN 0004-6256); 106; 2
Publisher Information: United States
Contract/Grant/Task Num: NSF AST-91-15030; NAG5-1888; NAG5-1755; NAG5-1900
Financial Sponsor: NASA; United States
Organization Source: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Description: 6p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: PLANETARY NEBULAE; PROPORTIONAL COUNTERS; ROSAT MISSION; X RAY ASTRONOMY; X RAY IMAGERY; X RAYS; BLACK BODY RADIATION; POINT SOURCES; STELLAR TEMPERATURE
Imprint And Other Notes: Astronomical Journal vol. 106, no. 2 p. 650-655. Aug. 1993
Miscellaneous Notes: Research supported by Research Corp.
Availability Source: Other Sources
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