The following papers were presented by Astronomy faculty and
students at the Villanova meeting of Sigma Xi
Friday April 6, 2001

A Comparative Far UV Spectroscopic Study of the Dwarf Novae VW Vul and X Leo During Quiescence
HENRY, COLLEEN K, and Sion, Edward

The Dwarf Novae UZ Serpentis and SS Aurigae During Quiescence: Exposed White Dwarfs?
LAKE, JOSHUA, and Sion, Edward

The Dwarf Novae TY Psc and V436 Cen During Quiescence: Exposed White Dwarfs?
NADALIN, IRA., and Sion, Edward

A Far UV Spectral Analysis in the Far UV of the Dwarf Nova RU Peg
URBAN, JOEL, and Sion, Edward

Chemical Abundances of the Accreting Magnetic White Dwarf in the Polar AM Herculis
DEPASQUALE, JOSEPH, and Sion, Edward

The Underlying White Dwarf Accretor in the Dwarf Nova UU Aquilae
STUMP, MICHAEL and Sion, Edward

Hubble Space Telescope Observations of the Old Nova DI Lacertae
MOYER, ELIZABETH, and Sion, Edward

The Thermal History of the Magnetic White Dwarf in the Pre-Cataclysmic Binary V471 Tauri
HENRY, COLLEEN, and Sion, Edward

Archival HST and IUE Spectroscopy of the Dwarf Novae AH Her and CM Del During Quiescence
LYONS, KELLY, STYS, DAVID, SLEVINSKY, RICHARD, and Sion, Edward

The Rotation/Activity Relation for Solare Neighborhood ZAMS Stars.
C. W. Ambruster, F. C. Fekel, A. Brown, & B. E. Wood

The Sun in Time:Starspots and Luminosity Variations of the Solar-type Stars of Different Ages
*J.J. Bochanski, *J. M. DePasquale, L. E. DeWarf, *P. V. DiTuro
E. F. Guinan, G. P. McCook, M. Guedel, *J. Hargis, I. Ribas

The Distance to the Large Magellanic Cloud from Eclipsing Binaries
E. L. Fitzpatrick, I. Ribas, E. F. Guinan, L. E. DeWarf, F. P. Maloney, & D. L. Massa

A Possible Brown Dwarf Companion to the Hyades Eclipsing Binary V471
E. F. Guinan, I. Ribas, *J.J. Bochanski, G. P. McCook
Tauri

STudies of the Eclipses of the M-type Eclipsing Binary CM Dra: Surface Maps and Searches for Low-Mass Companions. J. R. Hargis, D. H. Bradstreet, *J.S. Lake, F. D. Jewett, G.R.
Wilkinson, *J. M. Blair, E. F. Guinan, I. Ribas, G. P. McCook

The Amazing Blue Stragglers in the Core of the Galactic Blobular Cluster NGC 6397
J. F. Sepinsky, R. A. Saffer, *C. S. Pilman

Photometric Observations of Planetary Transits: Discovery of a Jupiter-size Planet around HD 209458
M. Stump & E. F. Guina