Search Publications
Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I.
Gray, R. O.; Corbally, C. J.; Garrison, R. F. +2 more
We have embarked on a project, under the aegis of the Nearby Stars (NStars)/Space Interferometry Mission Preparatory Science Program, to obtain spectra, spectral types, and, where feasible, basic physical parameters for the 3600 dwarf and giant stars earlier than M0 within 40 pc of the Sun. In this paper, we report on the results of this project f…
Observations of the SW Sextantis Star DW Ursae Majoris with the Far Ultraviolet Spectroscopic Explorer
Szkody, Paula; Hoard, D. W.; Long, Knox S. +2 more
We present an analysis of the first far-ultraviolet observations of the SW Sextantis type cataclysmic variable DW Ursae Majoris, obtained in 2001 November with the Far Ultraviolet Spectroscopic Explorer. The time-averaged spectrum of DW UMa shows a rich assortment of emission lines (plus some contamination from interstellar absorption lines includ…
The Early Ultraviolet Evolution of the ONeMg Nova V382 Velorum 1999
Gehrz, Robert D.; Bond, Howard E.; Krautter, Joachim +7 more
We present a multiwavelength study of the ONeMg Galactic nova V382 Velorum 1999 using HST/STIS and FUSE ultraviolet spectra and comparisons with published ground-based optical spectra. We find a close match to the basic phenomenology of another well-studied ONeMg nova, V1974 Cygni (Nova Cyg 1992), in particular, to the spectral development through…
Deconstructing HD 28867
Walter, Frederick M.; Wolk, Scott J.; Morse, Jon A. +1 more
The 3" pair of B9 stars HD 28867 is one of the brightest X-ray sources in the Taurus-Auriga star-forming region. In this multiwavelength study, we attempt to deduce the source of the X-ray emission. We show that the east component is the X-ray source. The east component has a near-IR excess and displays narrow absorption lines in the optical, both…
Far-Ultraviolet Observations of the Circumstellar Gas in the 2 Andromedae System
Neff, James E.; Cheng, K. -P.
The A5 star β Pictoris is a possible young planetary system and has the best-studied circumstellar disk. Our visible and ultraviolet observations of 2 Andromedae indicated that this A3 star has β Pictoris-like gas infall. We present the far-ultraviolet spectrum (905-1195 Å) of 2 And we obtained with the NASA-CNES-CSA Far Ultraviolet Spectroscopic …
Hubble Space Telescope Observations of the Nova-like Cataclysmic Variable V348 Puppis
Long, Knox S.; Froning, Cynthia S.; Baptista, Raymundo
We present time series UV and optical (1150-8000 Å) spectrophotometry of the nova-like (NL) cataclysmic variable V348 Pup through and after eclipse. Outside of eclipse the spectrum is characterized by a blue continuum, strong line emission, and a broad dip from 2000 to 3000 Å. The continuum eclipse depth is roughly the same over the entire wavelen…
Hubble Space Telescope Observations of the Old Nova DI Lacertae
Szkody, Paula; Sion, Edward M.; Starrfield, Sumner +3 more
We have carried out a synthetic spectral analysis of a Hubble Space Telescope Space Telescope Imaging Spectrograph observation of the old nova DI Lacertae (Nova Lacerta 1910). The spectrum, obtained with the E140M disperser, reveals a rising continuum shortward of 1560 Å, a C IV P Cygni profile indicative of wind outflow associated with disk accre…