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Observations of NGC 7662 from 1300 to 2850 Å

Published online by Cambridge University Press:  22 September 2016

R.C. Bohlin
Affiliation:
Goddard Space Flight Center
T.P. Stecher
Affiliation:
Goddard Space Flight Center

Extract

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An ultraviolet spectrum of NGC 7662 was obtained with a rocket-borne telescope in a 130 s exposure using a microchannel plate detector and film. In addition to the three strong ultraviolet lines of C III], C IV, and He II seen previously in NGC 7027, a new strong line of [Ne IV] at 2440 Å and a prominent continuum were measured in NGC 7662. The observed fluxes are given for both the lines and the continuum on an absolute basis, with a typical accuracy of about 25 percent. The absolute calibration is based primarily on in-flight observations of the stars α Lyr and α And, which have been well measured in the ultraviolet. This calibration is confirmed by laboratory data and by photoelectric observations from the ANS satellite.

Type
Session II: Observations of Planetary Nebulae
Copyright
Copyright © Reidel 1978