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Ultraviolet and Optical Observations of OB Associations in M31
O'Connell, R. W.; Bohlin, R. C.; Stecher, T. P. +7 more
Images of the central and southern parts of the local group Sb spiral galaxy M31 were obtained by the Ultraviolet Imaging Telescope during the Astro-1 Spacelab mission. Stellar photometry is obtained for 611 stars in 59 van den Bergh associations in the near-UV A1 band (central wavelength 2490 A), and for 130 of these stars in the far-UV B1 band (…
Hubble Space Telescope Images of the Nuclear Star-forming Region in the Interacting Galaxy NGC 5930
Bower, Gary A.; Wilson, Andrew S.
High-resolution images of the spiral galaxy NGC 5930 have been obtained with the Planetary Camera aboard the Hubble Space Telescope in the emission lines of [O III] λλ4959, 5007 + Hβ and Hα + [N II] λλ6548, 6583, and their adjacent continua. NGC 5930 is the interacting companion of the Type 2 Seyfert galaxy NGC 5929. Five bright continuum knots, w…
Far-Ultraviolet Stellar Photometry: Fields in Sagittarius and Scorpius
Schmidt, Edward G.; Carruthers, George R.
Far-ultraviolet photometry for 741 objects in a field in Sagittarius centered near M8 and 541 objects in a field centered near sigma Scorpii is presented. These data were extracted from electographic images obtained with two cameras during a shuttle flight in 1991 April/May. The cameras provided band passes with lambdaeff = 1375 A and l…
The X-Ray Spectra of Blazars: Analysis of the Complete EXOSAT Archive: Erratum
Giommi, Paolo; Barr, Paul; Sambruna, Rita M. +3 more
In the paper "The X-Ray Spectra of Blazars: Analysis of the Complete EXOSAT Archive" by Rita M. Sambruna, Paul Barr, Paolo Giommi, Laura Maraschi, Gianpiero Tagliaferri, and Aldo Treves (ApJS, 95,371 [1994]), the section regarding the object PKS 1510-08 (Section 4.4.14) contains an erroneous quotation. K. P. Singh, A.R. Rao, and M.N. Vahia (ApJ, 3…