Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988cuny.reptr....h&link_type=abstract
Final Technical Report, 1 Jul. 1986 - 31 Aug. 1988 Columbia Univ., New York, NY. Astrophysics Lab.
Astronomy and Astrophysics
Astronomy
Emission Spectra, Iue, Line Spectra, Stellar Spectra, Stellar Spectrophotometry, Ultraviolet Spectroscopy, Accretion Disks, Quasars, Radio Astronomy, Seyfert Galaxies, Signal To Noise Ratios, Stellar Rotation
Scientific paper
The results of the 9th and 10th IUE episode programs listed are summarized. Observations and basic data reductions were completed for 4 extragalactic programs which were allocated a total of 9 US1 shifts, and 2 stellar investigations which used 10 US2 shifts. Use was made of the Goddard RDAF to obtain better signal to noise ratio spectra using the Gaussian extraction routines. Highlights include the first IUE observations of H1821+643, the second brightest quasar in the sky, and the discovery of accretion disk emission line profiles in the elliptical Seyfert galaxy Arp 102B. Both of these observations were accompanied by nearly simultaneous optical spectrophotometry. As a result of the stellar programs, large amplitude variability associated with the rotation period of the Ap stars 78 Vir and 53 Cam was found.
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