Exoplanet Characterization and the Search for Life (2009)
Kasting, J., Traub, W., Roberge, A., Leger, A., Schwartz, A., Wooten, A., ...
Over 300 extrasolar planets (exoplanets) have been detected orbiting nearby stars. We now hope to conduct a census of all planets around nearby stars and to characterize their atmospheres and...
Observations of V592 Cas -— an Outflow at Optical Wavelengths (2009)
Kafka, S., Hoard, D. W., Honeycutt, R. K., Deliyannis, C. P.
We present new red optical spectra of V592 Cas aimed at exploring the properties of the outflow of this system in a spectral region where the underlying white dwarf and the accretion disk do not...
New Complexities in the Low-State Line Profiles of AM Herculis (2008)
Kafka, S., Ribeiro, T., Baptista, R., Honeycutt, R. K., Robertson, J. W.
When accretion temporarily ceases in the polar AM Her, the emission-line profiles are known to develop several distinct components, whose origin remains poorly understood. The new low-state spectra...
Robertson, Jeff W., Howell, Steve B., Honeycutt, R. K., Kafka, S., Campbell, T.
We present high-resolution echelle spectra and contemporaneous photometry of the polar ST LMi during a high state in 2007 March. Emission lines at Hα, He I λ5876, and He I λ7065 show similar line...
Observations of V592 Cas - An Outflow at Optical Wavelengths (2008)
Kafka, S., Hoard, D. W., Honeycutt, R. K., Deliyannis, C. P.
We present new red optical spectra of V592 Cas aimed at exploring the properties of the outflow of this system in a spectral region where the underlying white dwarf and the accretion disk do not...
New Complexities in the Low-State line profiles of AM Herculis (2008)
Kafka, S., Ribeiro, T., Baptista, R., Honeycutt, R. K., Robertson, J. W.
When accretion temporarily ceases in the polar AM Her, the emission line profiles are known to develop several distinct components, whose origin remains poorly understood. The new low-state spectra...
"Dark matter" in accretion disks (2008)
Howell, Steve B., Hoard, D. W., Brinkworth, C., Kafka, S., Walentosky, M. J., Walter, Frederick M., ...
Using Spitzer Space Telescope photometric observations of the eclipsing, interacting binary WZ Sge, we have discovered that the accretion disk is far more complex than previously believed. Our 4.5...
Campbell, R. K ., Harrison, T. E., Kafka, S.
We present phase-resolved low-resolution infrared spectra of AM Her and ST LMi, two low-field polars that we observed with SPEX on the IRTF. Optical/NIR light curves are also published to help...
Hoard, D. W., Wachter, S., Brinkworth, C. S., Kafka, S., Howell, S. B., Ciardi, D. R.
Cataclysmic variables have been extensively observed at optical, ultraviolet, and Xray wavelengths, where their white dwarf primary stars and bright accretion disks dominate their emitted luminosity....
QU Carinae: A SNeIa progenitor? (2008)
Kafka, S., Anderson, R., Honeycutt, R. K.
Optical spectra obtained in 2006-2007 of the nova-like cataclysmic variable QU Car are studied for radial velocities (RVs), line profiles, and line identifications. We are not able to confirm the...
QU Carinae: a SNeIa progenitor? (2008)
Kafka, S., Anderson, R., Honeycutt, R. K.
Optical spectra obtained in 2006-07 of the nova-like cataclysmic variable QU Car are studied for radial velocities, line profiles, and line identifications. We are not able to confirm the reported...
A Photometric and Spectroscopic Study of the Cataclysmic Variable ST LMi during 2005-2006 (2006)
Kafka, S., Howell, S. B., Honeycutt, R. K., Robertson, J. W.
We present orbit-resolved spectroscopic and photometric observations of the polar ST LMi during its recent low and high states. In the low state spectra, we report the presence of blue and red...