609 citations · 1.9k across the 25 of their papers we have counts for
12 papers · 1 filter
The Highly Variable Wind from WD J005311, the Stellar Remnant of the Peculiar Galactic Supernova of 1181
C. Alexander Thomas, Peter Garnavich, Charlotte Wood +2
WD J005311 is the peculiar stellar remnant of the Galactic supernova from 1181, and appears to have been the merger of two white dwarfs. We present time-resolved spectroscopy of WD…
TESS light curves of two new magnetic cataclysmic variables: an asynchronous polar at the period minimum, and an eclipsing system with a large spin-to-orbit ratio
Colin Littlefield, Krystian Ilkiewicz, Paul A. Mason +2
A recent development in the study of magnetic cataclysmic variable stars (mCVs) has been the identification of asynchronously spinning mCVs with orbital periods <2 h that have sign…
A Catalogue of Orbital Periods of Cataclysmic Variables and Candidates from TESS Observations
Meryem K. Dağ, Simone Scaringi, Kieran O'Brien +21
We present a systematic analysis of 2544 cataclysmic variable systems and related candidates observed by the Transiting Exoplanet Survey Satellite (TESS), with the aim of compiling…
A Refined Orbital Ephemeris for the Intermediate Polar FO Aquarii and Evidence for a Period Derivative
Peter Garnavich, Jordan Tweddale, Colin Littlefield
We combine more than 40 years of eclipse timings of the intermediate polar FO Aqr and derive new orbital ephemerides. The eclipse times are best fit with a second order polynomial,…
HST Observations of the CV Propeller LAMOST J024048.51+195226.9
Jordan Tweddale, Peter Garnavich, Colin Littlefield +1
We present Hubble Space Telescope (HST) FUV spectra and light curves of the magnetic cataclysmic variable (CV) LAMOST J024048.51+195226.9 (J0240), the second known CV propeller. Th…
An Eccentric Planet Orbiting the Polar V808 Aurigae
McKenna Leichty, Peter Garnavich, Colin Littlefield +4
We analyze 15 years of eclipse timings of the polar V808 Aur. The rapid ingress/egress of the white dwarf and bright accretion region provide timings as precise as a few tenths of…
Discovery of a New WZ Sagittae Type Cataclysmic Variable in the Kepler/K2 Data
R. Ridden-Harper, B. E. Tucker, P. Garnavich +7
We identify a new, bright transient in the Kepler/K2 Campaign 11 field. Its light curve rises over seven magnitudes in a day and then declines three magnitudes over a month before…
X-ray observations of FO Aqr during the 2016 low state
M. R. Kennedy, P. M. Garnavich, C. Littlefield +5
We present the first ever X-ray data taken of an intermediate polar, FO Aqr, when in a low accretion state and during the subsequent recovery. The Swift and Chandra X-ray data take…
The Evolved Main-Sequence Channel: HST and LBT observations of CSS120422:111127+571239
M. Kennedy, P. M. Garnavich, P. J. Callanan +3
The "evolved main-sequence" channel is thought to contribute significantly to the population of AM CVn type systems in the Galaxy, and also to the number of cataclysmic variables d…
Observations of Type Ia Supernova 2014J with FLITECAM/SOFIA
William D. Vacca, Ryan T. Hamilton, Maureen Savage +9
We present medium resolution near-infrared (NIR) spectra, covering 1.1 to 3.4 microns, of the normal Type Ia supernova (SN Ia) SN 2014J in M82 obtained with the FLITECAM instrument…
Multi-epoch time-resolved photometry of the eclipsing polar CSS081231:J071126+440405
A. D. Schwope, F. Mackebrandt, B. D. Thinius +4
The eclipsing polar CSS081231 turned bright (V_max ~ 14.5) in late 2008 and was subsequently observed intensively with small and medium-sized telescopes. A homogeneous analysis of…
The Transitional Stripped-Envelope SN 2008ax: Spectral Evolution and Evidence for Large Asphericity
R. Chornock, A. V. Filippenko, W. Li +19
Supernova (SN) 2008ax in NGC 4490 was discovered within hours after shock breakout, presenting the rare opportunity to study a core-collapse SN beginning with the initial envelope-…