1.3k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Shanghai Jiao Tong UniversityCN68 papers
- Chinese Academy of SciencesCN52 papers
- Texas A&M UniversityUS52 papers
- Technische Universität DarmstadtDE43 papers
- GSI Helmholtz Centre for Heavy Ion ResearchDE37 papers
- Institute of Modern PhysicsCN31 papers
- Shanghai Institute of Applied PhysicsCN30 papers
- Michigan State UniversityUS29 papers
- Institute of Theoretical PhysicsCN25 papers
- Xi'an Jiaotong UniversityCN22 papers
- Goethe University FrankfurtDE21 papers
- National Superconducting Cyclotron LaboratoryUS21 papers
44 papers · 1 filter
Solar fusion III: New data and theory for hydrogen-burning stars
B. Acharya, M. Aliotta, A. B. Balantekin +47
In stars that lie on the main sequence in the Hertzsprung-Russel diagram, like our sun, hydrogen is fused to helium in a number of nuclear reaction chains and series, such as the p…
The Merger Fraction of Ultramassive White Dwarfs
Mukremin Kilic, Adam G. Moss, Alekzander Kosakowski +6
We search for merger products among the 25 most massive white dwarfs in the Montreal White Dwarf Database 100 pc sample through follow-up spectroscopy and high-cadence photometry.…
Short Duration Accretion States of Polars as seen in TESS and ZTF data
C. Duffy, G. Ramsay, Kinwah Wu +4
Polars are highly magnetic cataclysmic variables which have been long observed to have both high and low brightness states. The duration of these states has been previously seen to…
The Rapid Rotation of the Strongly Magnetic Ultramassive White Dwarf EGGR 156
K. A. Williams, J. J. Hermes, Z. P. Vanderbosch
The distribution of white dwarf rotation periods provides a means for constraining angular momentum evolution during the late stages of stellar evolution, as well as insight into t…
The Periodic Signals of Nova V1674 Herculis (2021)
Joseph Patterson, Marguerite Epstein-Martin, Josie Enenstein +24
We present time-series photometry during eruption of the extremely fast nova V1674 Herculis (Nova Her 2021). The 2021 light curve showed periodic signals at 0.152921(3) d and 501.4…
The Initial-Final Mass Relation for Hydrogen-Deficient White Dwarfs
Joseph W. Barnett, Kurtis A. Williams, A. Bédard +1
The initial-final mass relation (IFMR) represents the total mass lost by a star during the entirety of its evolution from the zero age main sequence to the white dwarf cooling trac…
Detection of an energetic flare from the M5V secondary star in the Polar MQ Dra
Gavin Ramsay, Pasi Hakala, Matt Wood
MQ Dra is a strongly magnetic Cataclysmic Variable whose white dwarf accretes material from its secondary star through a stellar wind at a low rate. TESS observations were made of…
The White Dwarfs of the Old, Solar Metallicity Open Star Cluster Messier 67: Properties and Progenitors
Paul A. Canton, Kurtis A. Williams, Mukremin Kilic +1
The old, solar metallicity open cluster Messier 67 has long been considered a lynchpin in the study and understanding of the structure and evolution of solar-type stars. The same i…
The pulsating white dwarf G117-B15A: still the most stable optical clock known
S. O. Kepler, D. E. Winget, Zachary P. Vanderbosch +14
The pulsating hydrogen atmosphere white dwarf star G 117-B15A has been observed since 1974. Its main pulsation period at 215.19738823(63) s, observed in optical light curves, varie…
Ensemble Evolutionary Studies of White Dwarfs in Open Star Clusters
Kurtis A. Williams
White dwarfs (WDs) in open star clusters are a highly useful ensemble of stars. While numerous researchers use open cluster WDs to study the initial-final mass relation, numerous o…
The Spin-Period History of Intermediate Polars
Joseph Patterson, Enrique de Miguel, Jonathan Kemp +25
We report the detailed history of spin-period changes in five intermediate polars (DQ Herculis, AO Piscium, FO Aquarii, V1223 Sagittarii, and BG Canis Minoris) during the 30-60 yea…
Ensemble Properties of the White Dwarf Population of the Old, Solar Metallicity Open Star Cluster Messier 67
Kurtis A. Williams, Paul A. Canton, A. Bellini +4
White dwarfs are excellent forensic tools for studying end-of-life issues surrounding low- and intermediate-mass stars, and the old, solar-metallicity open star cluster Messier 67…
V729 Sgr: A long period dwarf nova showing negative superhumps during quiescence
Gavin Ramsay, Matt A. Wood, John Cannizzo +2
We report K2 observations of the eclipsing cataclysmic variable V729 Sgr which covered nearly 80 days in duration. We find five short outbursts and two long outbursts, one of which…
The Ages of the Thin Disk, Thick Disk, and the Halo from Nearby White Dwarfs
Mukremin Kilic, Jeffrey A. Munn, Hugh C. Harris +5
We present a detailed analysis of the white dwarf luminosity functions derived from the local 40 pc sample and the deep proper motion catalog of Munn et al (2014, 2017). Many of th…
A 16-Year Photometric Campaign on the Eclipsing Novalike Variable DW Ursae Majoris
D. R. S. Boyd, E. de Miguel, J. Patterson +29
We present an analysis of photometric observations of the eclipsing novalike variable DW UMa made by the CBA consortium between 1999 and 2015. Analysis of 372 new and 260 previousl…
Testing the formation scenarios of binary neutron star systems with measurements of the neutron star moment of inertia
William G. Newton, Andrew W. Steiner, Kent Yagi
Two low mass neutron stars, J0737-3039B and the companion to J1756-2251, show strong evidence of being formed from the collapse of an ONeMg core in an electron capture supernova (E…
A Deep Proper Motion Catalog Within the Sloan Digital Sky Survey Footprint. II. The White Dwarf Luminosity Function
Jeffrey A. Munn, Hugh C. Harris, Ted von Hippel +8
A catalog of 8472 white dwarf (WD) candidates is presented, selected using reduced proper motions from the deep proper motion catalog of Munn et al. 2014. Candidates are selected i…
New Halo White Dwarf Candidates in the Sloan Digital Sky Survey
Kyra Dame, A. Gianninas, Mukremin Kilic +5
We present optical spectroscopy and near-infrared photometry of 57 faint () high proper motion white dwarfs identified through repeat imaging of square degr…
The Emergence of Negative Superhumps in Cataclysmic Variables: Smoothed Particle Hydrodynamics Simulations
David M. Thomas, Matt A. Wood
Negative superhumps are believed to arise in cataclysmic variable systems when the accretion disk is tilted with respect to the orbital plane. Slow retrograde precession of the lin…
Variability in Hot Carbon-Dominated Atmosphere (hot DQ) White Dwarfs: Rapid Rotation?
Kurtis A. Williams, M. H. Montgomery, D. E. Winget +2
Hot white dwarfs with carbon-dominated atmospheres (hot DQs) are a cryptic class of white dwarfs. In addition to their deficiency of hydrogen and helium, most of these stars are hi…
Time-series spectroscopy of two candidate double degenerates in the open cluster NGC 6633
Kurtis A. Williams, Donald Serna-Grey, Subho Chakraborty +2
Type Ia supernovae are heavily used tools in precision cosmology, yet we still are not certain what the progenitor systems are. General plausibility arguments suggest there is pote…
Continuous `stunted' outbursts detected from the Cataclysmic Variable KIC 9202990 using Kepler data
Gavin Ramsay, Pasi Hakala, Matt A Wood +4
Based on early Kepler data, Ostensen et al. (2010) found that KIC 9202990 showed a 4 hr and a two-week photometric period. They suggested the 4 hr period was a signature of an orbi…
Observational constraints on neutron star crust-core coupling during glitches
William G. Newton, Sabrina Berger, Brynmor Haskell
We demonstrate that observations of glitches in the Vela pulsar can be used to investigate the strength of the crust-core coupling in a neutron star, and suggest that recovery from…
A Deep Proper Motion Catalog Within The Sloan Digital Sky Survey Footprint
Jeffrey A. Munn, Hugh C. Harris, Ted von Hippel +6
A new proper motion catalog is presented, combining the Sloan Digital Sky Survey (SDSS) with second epoch observations in the r band within a portion of the SDSS imaging footprint.…