Thomas E. Harrison's Oxford/Warner Symposium Poster

The Astrometric and Spectroscopic Parallaxes of

Three Dwarf Novae (SS Aur, U Gem, and SS Cyg)

Poster Text (Color Postscript)

Poster Figures:

Figure 1. Mk versus Mv for the three DN.

Figure 2. IR Spectra of the DN and standard stars.

Figure 3. IR Spectra of SS Aur and two standards.

Figure 4. IR Spectra of U Gem and two standards.

Figure 5. IR Spectral Energy Distribution of SS Aur.

Figure 6. IR Spectral Energy Distribution of U Gem.

Figure 7.IR Spectral Energy Distribution of SS Cyg.

NOTE: Figures 5, 6 and 7 are out of date, they have changed somewhat due to the slight changes in parallax (see below), along with new calibrations of the DN at R and I.

Official Contribution (Just the facts--some of which are wrong!)

Preprint of ApJ Letter paper on the parallaxes.

Note that these results are not final, as the Lutz-Kelker bias was not included in this analysis. Also, small changes to the spectral types and photometry of the reference stars has resulted in small adjustments to the final parallax. These changes have been relatively minor: one percent for SS Aur and U Gem, and 4% for SS Cyg---well within the published error bars.

These just in:

The spectrum of SS Aur

The spectrum of U Gem

The spectrum of SS Cyg