Search Results - "Winget, D E"

All-Order Full-Coulomb Quantum Spectral Line-Shape Calculations by Gomez, T A, Nagayama, T, Cho, P B, Zammit, M C, Fontes, C J, Kilcrease, D P, Bray, I, Hubeny, I, Dunlap, B H, Montgomery, M H, Winget, D E

“…Understanding how atoms interact with hot dense matter is essential for astrophysical and laboratory plasmas. Interactions in high-density plasmas broaden…”
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Magnetic white dwarf stars in the Sloan Digital Sky Survey by Kepler, S. O., Pelisoli, I., Jordan, S., Kleinman, S. J., Koester, D., Külebi, B., Peçanha, V., Castanheira, B. G., Nitta, A., Costa, J. E. S., Winget, D. E., Kanaan, A., Fraga, L.

“…To obtain better statistics on the occurrence of magnetism among white dwarfs, we searched the spectra of the hydrogen atmosphere white dwarf stars (DAs) in…”
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Hunting for Polluted White Dwarfs and Other Treasures with Gaia XP Spectra and Unsupervised Machine Learning by Kao, Malia L., Hawkins, Keith, Rogers, Laura K., Bonsor, Amy, Dunlap, Bart H., Sanders, Jason L., Montgomery, M. H., Winget, D. E.

“…Abstract White dwarfs (WDs) polluted by exoplanetary material provide the unprecedented opportunity to directly observe the interiors of exoplanets. However,…”
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Pruning The ELM Survey: Characterizing Candidate Low-mass White Dwarfs through Photometric Variability by Bell, Keaton J., Gianninas, A., Hermes, J. J., Winget, D. E., Kilic, Mukremin, Montgomery, M. H., Castanheira, B. G., Vanderbosch, Z., Winget, K. I., Brown, Warren R.

“…We assess the photometric variability of nine stars with spectroscopic Teff and log g values from the ELM Survey that locates them near the empirical extremely…”
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A Gravitational Redshift Determination of the Mean Mass of White Dwarfs. Da Stars by Falcon, Ross E, Winget, D. E, Montgomery, M. H, Williams, Kurtis A

“…We measure apparent velocities (v{sub app}) of the Halpha and Hbeta Balmer line cores for 449 non-binary thin disk normal DA white dwarfs (WDs) using optical…”
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The Dust Cloud around the White Dwarf G29-38 by Reach, William T, Kuchner, Marc J, von Hippel, Ted, Burrows, Adam, Mullally, Fergal, Kilic, Mukremin, Winget, D. E

“…We present new observations of the white dwarf G29-38 with the camera (4.5 and 8 km), photometer (24 km), and spectrograph (5.5-14 km) of the Spitzer Space…”
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Debris Disks around White Dwarfs: The DAZ Connection by Kilic, Mukremin, von Hippel, Ted, Leggett, S. K, Winget, D. E

“…We present near-infrared spectroscopic observations of 20 previously known DAZ white dwarfs obtained at the NASA Infrared Telescope Facility. Two of these…”
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The Physics of Crystallization From Globular Cluster White Dwarf Stars in NGC 6397 by Winget, D. E, Kepler, S. O, Campos, Fabíola, Montgomery, M. H, Girardi, Leo, Bergeron, P, Williams, Kurtis

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Limits on Planets around Pulsating White Dwarf Stars by Mullally, Fergal, Winget, D. E, Degennaro, Steven, Jeffery, Elizabeth, Thompson, S. E, Chandler, Dean, Kepler, S. O

“…We present limits on planetary companions to pulsating white dwarf stars. A subset of these stars exhibit extreme stability in the period and phase of some of…”
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Excess Infrared Radiation from the Massive DAZ White Dwarf GD 362: A Debris Disk? by Kilic, Mukremin, von Hippel, Ted, Leggett, S. K, Winget, D. E

“…We report the discovery of excess K-band radiation from the massive DAZ white dwarf star GD 362. Combining infrared photometric and spectroscopic observations,…”
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Strong Limits on the DFSZ Axion Mass with G117-B15A by Bischoff-Kim, A, Montgomery, M. H, Winget, D. E

“…We compute rates of period change for the 215 s mode in G117-B15A and the 213 s mode in R548, first for models without axions, and then for models with axions…”
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Inverting Color-Magnitude Diagrams to Access Precise Star Cluster Parameters: A Bayesian Approach by von Hippel, Ted, Jefferys, William H, Scott, James, Stein, Nathan, Winget, D. E, DeGennaro, Steven, Dam, Albert, Jeffery, Elizabeth

“…We demonstrate a new Bayesian technique to invert color-magnitude diagrams of main-sequence and white dwarf stars to reveal the underlying cluster properties…”
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Fine Grid Asteroseismology of G117-B15A and R548 by Bischoff-Kim, A, Montgomery, M. H, Winget, D. E

“…We now have a good measurement of the cooling rate of G117-B15A. In the near future, we will have equally well determined cooling rates for other pulsating…”
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SDSS J142625.71+575218.3: A Prototype for a New Class of Variable White Dwarf by Montgomery, M. H, Williams, Kurtis A, Winget, D. E, Dufour, Patrick, DeGennaro, Steven, Liebert, James

“…We present the results of a search for pulsations in six of the recently discovered carbon-atmosphere white dwarf ("hot DQ") stars. On the basis of our…”
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HST AND OPTICAL DATA REVEAL WHITE DWARF COOLING, SPIN, AND PERIODICITIES IN GW LIBRAE 3―4 YEARS AFTER OUTBURST by SZKODY, Paula, MUKADAM, Anjum S, SULLIVAN, Denis J, WINGET, D. E, GÄNSICKE, Boris T, HENDEN, Arne, SION, Edward M, TOWNSLEY, Dean, CHOTE, Paul, HARMER, Diane, HARPE, Eric J, HERMES, J. J

“…Since the large amplitude 2007 outburst which heated its accreting, pulsating white dwarf, the dwarf nova system GW Librae has been cooling to its quiescent…”
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Ensemble Characteristics of the ZZ Ceti Stars by Mukadam, Anjum S, Montgomery, M. H, Winget, D. E, Kepler, S. O, Clemens, J. C

“…We present the observed pulsation spectra of all known noninteracting ZZ Ceti stars (hydrogen atmosphere white dwarf variables [DAVs]) and examine changes in…”
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TWO NEW TIDALLY DISTORTED WHITE DWARFS by HERMES, J. J, KILIC, Mukremin, BROWN, Warren R, MONTGOMERY, M. H, WINGET, D. E

“…We identify two new tidally distorted white dwarfs (WDs), SDSS J174140.49+652638.7 and J211921.96-001825.8 (hereafter J1741 and J2119). Both stars are…”
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Measuring the Evolution of the Most Stable Optical Clock G 117-B15A by Kepler, S. O, Costa, J. E. S, Castanheira, B. G, Winget, D. E, Mullally, Fergal, Nather, R. E, Kilic, Mukremin, von Hippel, Ted, Mukadam, Anjum S, Sullivan, Denis J

“…We report our measurement of the rate of change of period with time (P) for the 215 s periodicity in the pulsating white dwarf G 117-B15 A, the most stable…”
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Evidence for Temperature Change and Oblique Pulsation from Light Curve Fits of the Pulsating White Dwarf GD 358 by Montgomery, M. H, Provencal, J. L, Kanaan, A, Mukadam, Anjum S, Thompson, S. E, Dalessio, J, Shipman, H. L, Winget, D. E, Kepler, S. O, Koester, D

“…Convective driving, the mechanism originally proposed by Brickhill for pulsating white dwarf stars, has gained general acceptance as the generic linear…”
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SDSS J163030.58+423305.8: a 40-min orbital period detached white dwarf binary by Kilic, Mukremin, Brown, Warren R., Hermes, J. J., Allende Prieto, Carlos, Kenyon, S. J., Winget, D. E., Winget, K. I.

“…ABSTRACT We report the discovery of a new detached, double white dwarf (WD) system with an orbital period of 39.8 min. We targeted SDSS J163030.58+423305.8…”
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