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The cataclysmic variable CW 1045+525: a secondary-dominated dwarf nova?
C. Tappert, J. R. Thorstensen, W. H. Fenton +3
We present spectroscopic and photometric observations of the cataclysmic variable CW 1045+525. Both the optical spectrum and the photometric lightcurve show a strong contribution o…
Redshifts for 2410 Galaxies in the Century Survey Region
G. Wegner, J. R. Thorstensen, M. J. Kurtz +6
The `Century Survey' strip covers 102 square degrees within the limits 8.5h \leq α_{1950} \leq 16.5h, 29.0 degrees \leq δ_{1950} \leq 30.0 degrees. The strip passes through the Cor…
The Long-Period Orbit of the Dwarf Nova V630 Cassiopaeia
Jerome A. Orosz, John R. Thorstensen, R. Kent Honeycutt
We present extensive spectroscopy and photometry of the dwarf nova V630 Cassiopeiae. A late-type (K4-5) absorption spectrum is easily detectable, from which we derive the orbital p…
Spectroscopy and orbital periods of four cataclysmic variable stars
J. R. Thorstensen, C. J. Taylor
We present spectroscopy and orbital periods Porb of four relatively little-studied cataclysmic variable stars. The stars and their periods are: AF Cam, Porb = 0.324(1) d (the daily…
The Expansion Center and Dynamical Age of the Galactic Supernova Remnant Cassiopeia A
John R. Thorstensen, Robert A. Fesen, Sidney van den Bergh
We present proper motions for 21 bright main shell and 17 faint, higher-velocity, outer ejecta knots in the Cas A supernova remnant and use them to derive new estimates for the rem…