Results 21 to 30 of about 2,261,610 (72)

Faint Thermonuclear Supernovae from AM Canum Venaticorum Binaries [PDF]

, 2007
Helium that accretes onto a carbon/oxygen white dwarf in double white dwarf AM Canum Venaticorum (AM CVn) binaries undergoes unstable thermonuclear flashes when the orbital period is in the 3.5-25 minute range.
Shen, K.J., Bildsten, L., Nelemans, G.A., Weinberg, N.N.   +3 more
core   +1 more source

The AM Canum Venaticorum binary SDSS J173047.59+554518.5 [PDF]

, 2014
The AM Canum Venaticorum (AM CVn) binaries are a rare group of hydrogen-deficient, ultrashort period, mass-transferring white dwarf binaries and are possible progenitors of Type Ia supernovae.
Marsh, Tom, Copperwheat, Chris M., Nelemans, Gijs, Kupfer, T., Copperwheat, C.M., Steeghs, D., Groot, Paul J., Copperwheat, C. M., Carter, P. J., Carter, P.J., Nelemans, G., Marsh, T.R., Nelemans, G.A., Groot, P. J., Marsh, T. R., Groot, P.J.   +15 more
core   +1 more source

Contemporaneous Imaging Comparisons of the Spotted Giant σ Geminorum Using Interferometric, Spectroscopic, and Photometric Data [PDF]

, 2022
Nearby active stars with relatively rapid rotation and large starspot structures offer the opportunity to compare interferometric, spectroscopic, and photometric imaging techniques.
Strassmeier KG, Weber M, Baron F, Hackman T, Monnier JD, ten Brummelaar TA, Roettenbacher RM, Henry GW, Schaefer GH, Harmon RO, Korhonen H   +10 more
core   +3 more sources

Time Series Energy Production in Smoothed Particle Hydrodynamics Accretion Disks: Superhumps in the AM Canum Venaticorum Stars

The Astrophysical Journal, 1998
The energy production time series of our purely hydrodynamic accretion disk simulations display remarkable similarities with the observed light curves of dwarf novae superhumps in general and the AM CVn stars in particular. The superhump period excess as a function of mass ratio agrees well with earlier theoretical and numerical results, and the ...
James C. Simpson, Matt A. Wood
openaire   +1 more source

The Thermal State of the Accreting White Dwarf in AM Canum Venaticorum Binaries [PDF]

, 2006
Contains fulltext : 35202_1.pdf (Author’s version preprint ) (Open Access) Contains fulltext : 35202._2.pdf (Publisher’s version ) (Open Access)We calculate the heating and cooling of
Townsley, D.M., Bildsten, L., Nelemans, G.A., Deloye, C.J.   +3 more
core   +1 more source

Orbital Period Increase in ES Ceti

, 2022
We report a long-term study of the eclipse times in the 10-minute helium binary ES Ceti. The binary period increases rapidly, with P/P-dot = 6.2x10^6 yr.
Jonathan Kemp (14058720), Thomas Krajci (14082576), Robert Rea (14082569), Lewis Cook (14082579), Enrique de Miguel (14082562), Gordon Myers (14082567), Joseph Patterson (5162888), Berto Monard (14082578)   +7 more
core   +1 more source

The first eclipsing binary catalogue from the MOA-II data base

, 2017
We present the first catalogue of eclipsing binaries in twoMOA (Microlensing Observations in Astrophysics) fields towards the Galactic bulge, in which over 8000 candidates,mostly contact and semidetached binaries of periods < 1 d, were identified.
T Sumi (7720022), D Suzuki (7720025), K Masuda (7739525), A Sharan (7720016), M Donachie (7719965), DP Bennett (7719959), M Freeman (7751873), A Bhattacharya (7719962), F Abe (100427), Y Asakura (7739522), Y Itow (7719974), A Fukui (7719971), DJ Sullivan (7720019), Y Matsubara (7719989), M Nagakane (7720001), PJ Tristram (7720028), Y Hirao (7719938), T Saito (7720013), N Koshimoto (7719980), K Ohnishi (7720004), IA Bond (7719956), MCA Li (7719983), R Barry (7719953), NJ Rattenbury (7739528), A Yonehara (7720034), CH Ling (7719986), P Evans (7719968), Y Muraki (7719998)   +27 more
core   +6 more sources

Orbital Period Increase in ES Ceti [PDF]

, 2017
We report a long-term study of the eclipse times in the 10 minute helium binary ES Ceti. The binary period icreases rapidly, with with P/P = 6.2 x 106 years.
Lewis M. Cook, Berto Monard, Krajci, Thomas, Robert Rea, Myers, Gordon, Miguel Agustino, Enrique de, Gordon Myers, Joseph Patterson, Patterson, Joseph, Thomas Krajci, Jonathan Kemp, Cook, Lewis M., Enrique de Miguel, Monard, Berto, Kemp, Jonathan, Rea, Robert   +15 more
core   +1 more source

A Solar Analog Model for Decrease in Far Ultraviolet Irradiance Under a Grand Minimum

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Solar analog field stars having a range of magnetic activity can provide an estimate of solar spectral irradiance (SSI) variability relevant to understanding the Sun's influence on terrestrial climate. This approach is particularly useful for far ultraviolet (FUV) irradiance that cannot be observed from the Earth surface.
D. Lubin, C. Melis, D. Tytler
wiley   +1 more source

Revisiting Variable Stars Toward the Globular Cluster NGC 6496 With ATLAS and Gaia Photometry

Astronomische Nachrichten, Volume 347, Issue 7, August 2026.
ABSTRACT We revisit 13 variable stars in the field of the metal‐rich globular cluster NGC 6496, discovered by Abbas et al. (2015; Astronomical Journal 149:40) (hereafter referred to as “MA15”) via time‐series data, spanning 2 years. We improve upon the MA15 characterization of the variables using ATLAS time‐series photometry data, spanning 8 years, in ...
Madison E. Martin, Andrew Layden, Andrew McNeill   +2 more
wiley   +1 more source