HEAD 2000, November 2000
Session 41. Cataclysmic Variables
Display, Friday, November 10, 2000, 8:00am-6:00pm, Bora Bora Ballroom

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[41.03] CHANDRA and HST/STIS Observations of V382 Vel (1999) and V1494 Aql (1999)

S. Starrfield (ASU), S.N. Shore (IUSB), Y. Butt, J. Drake (CFA), H. E. Bond, R. Downes (STScI), J. Krautter (LSW-Heidelberg), R. M. Wagner (U of Arizona), R. D. Gehrz, C. E. Woodward (U of Minnesota), M. Della Valle (Arcetri Obs.), P. H. Hauschildt (U of Georgia), J. W. Truran (U of Chicago)

V382 Vel was discovered on May 22, 1999 and reached a Vmax brighter than 3 making it the brightest nova since V1500 Cyg in 1975. We observed it with HST/STIS three times during Summer 1999 and activated our CHANDRA Target of Opportunity program in early Fall 1999. Our first ACIS-I observation was on December 30, 1999 and we obtained an HRC+LETG spectrum on February 14, 2000. This nova is known to be an ONeMg nova and the grating spectrum showed lines of O VII and VIII, N VI and VII, Ne IX and X, and Mg XI plus other lines. We obtained two more ACIS-I spectra, one in April 2000 and one in August 2000. We shall show the results of these observations plus our inferences with respect to the hard component seen in the ROSAT observations of V1974 Cyg (Krautter et al. ApJ, 456, 788, 1996) and other novae.

V1494 Aql was discovered in outburst on December 1, 1999 and reached a Vmax of ~5. Our first CHANDRA ACIS - I observation was in April 2000. We obtained 2 more ACIS-I observations in June and August 2000. At this time, an HRC+LETG spectrum is planned for late September 2000. We will also present our available data on this nova.

We gratefully acknowledge partial support from NASA, NSF, STScI, CHANDRA, and DOE grants to our various institutions.

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The author(s) of this abstract have provided an email address for comments about the abstract: starrfield@asu.edu

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