Results 31 to 40 of about 2,677,677 (287)

The magnetosphere of the close accreting PMS binary V4046 Sgr [PDF]

, 2014
SGG acknowledges support from the Science & Technology Facilities Council (STFC) via an Ernest Rutherford Fellowship [ST/J003255/1]. GAW is supported by a Discovery Grant from the Natural Science & Engineering Research Council of Canada (NSERC).V4046 ...
Damiani, F., V. R. Holzwarth, Audard, M., Audard, M, Güdel, M, J.-F. Donati, Gregory, S. G.; id_orcid, S. H. P. Alencar, D. P. Huenemoerder, Wade, G. A., Huenemoerder, D. P, Sacco, G. G, Holzwarth, V.R., Wade, G.A., Argiroffi C., Maggio, A, Kastner, J.H., C. Argiroffi, Kastner J. H., Hussain, G. A. J, Bouvier, J, M. Audard, Alencar, S. H. P, Sacco, G. G., Huenemoerder, D.P., Holzwarth V. R., Huenemoerder D. P., Gregory, S.G., Hussain, G. A. J., Maggio, A., Damiani F., A. Maggio, ARGIROFFI, Costanza, Donati, J.-F., Damiani, F, Audard, Marc, F. Damiani, Sacco G. G., Hussain, G.A.J., Alecian, E., Sacco, G.G., Montmerle, T, Donati J.-F., Alencar S. H. P., Güdel, M., Argiroffi, C., Kastner, J. H., Alecian, E, Alencar, S.H.P., Gregory, S. G, Gregory, S. G., Montmerle T., G. A. J. Hussain, Donati, J. -F., Alencar, S. H. P., Audard M., E. Alecian, Kastner, J. H, T. Montmerle, Montmerle T, J. Bouvier, Wade G. A., Donati, J. F, J. H. Kastner, G. G. Sacco, Holzwarth, V. R., Bouvier, J., Alecian E., M. Güdel, Bouvier J., Gregory S. G., G. A. Wade, Güdel M., Montmerle, T., Huenemoerder, D. P., Maggio A., Holzwarth, V. R, S. G. Gregory, Hussain G. A. J.   +78 more
core   +1 more source

On the lower limit of contact binary star periods

Monthly Notices of the Royal Astronomical Society, 2022
ABSTRACT Data for 405 contact binary systems extracted from a recent compilation are supplemented by information from the literature for an additional ten ultrashort period (P < 0.2 d) binaries. This is used to calibrate period–luminosity–temperature relations for contact binaries.
openaire   +1 more source

Photometric study of the contact binary star V861 Herculis [PDF]

Astronomy & Astrophysics, 2004
First Cousins V(RI)C light curves of the W UMa-type eclipsing variable star V861 Herculis are presented. The system was observed in 2000 and 2003. The light curves obtained at different epochs showed significant deviation from each other. The O'Connell effect was about ∆V = 0.05 mag in 2000 but it vanished in 2003 (except the night of February 22/23 ...
Sz. Csizmadia, L. Patkós, A. Moór, V. Könyves   +3 more
openaire   +1 more source

Mass Ratio Estimates for Overcontact Binaries Using the Derivatives of Light Curves

The Astrophysical Journal, 2023
The photometric mass ratios of eclipsing binaries are usually estimated by light-curve modeling with an iterative method. We propose a new method for estimating the photometric mass ratio of an overcontact binary using the derivatives of a light curve ...
Shinjirou Kouzuma
doaj   +1 more source

FM stars II: a Fourier view of pulsating binary stars - determining binary orbital parameters photometrically for highly eccentric cases [PDF]

, 2015
Continuous and precise space-based photometry has made it possible to measure the orbital frequency modulation of pulsating stars in binary systems with extremely high precision over long time spans.
Kurtz, Donald W., Murphy, Simon J., Kurtz, Donald Wayne, Murphy, S. J., Shibahashi, Hiromoto, Shibahashi, H.   +5 more
core   +1 more source

Conversion of Contact Binary Stars to Single Star; Observational Paradox [PDF]

, 2023
Tek yıldızlarda dönme hareketinin hızı manyetik frenleme ile 200-300 km/sn değerlerinden 3-5 km/sn değerlerine kadar yavaşladığı 1960 lardan beri bilinmektedir.
Güneş, Mümin, Bulut, İbrahim, Bulut, Ahmet, Demircan, Osman   +3 more
core   +1 more source

Three Ultra-short-period Contact Eclipsing Binary Systems Mined from Massive Astronomical Surveys

The Astronomical Journal, 2023
We present the photometric analysis of three ultra-short-period total eclipsing binaries in contact configuration, CRTS_J172718.0+431624, OGLE-BLG-ECL-000104, and OGLE-BLG-ECL-000012, mined from massive astronomical surveys.
Athanasios Papageorgiou, Panagiota-Eleftheria Christopoulou, C. E. Ferreira Lopes, Eleni Lalounta, Márcio Catelan, Andrew J. Drake   +5 more
doaj   +1 more source

Contact-binary Evolution with Energy Transfer and Saturated Magnetic Braking

The Astrophysical Journal
The evolution of low-mass contact binaries is influenced by angular momentum loss, mass and energy transfer (ET), and the nuclear evolution of the components.
Matthias Fabry, Andrej Prša
doaj   +1 more source

A Method of Measuring Gamma-Velocities of Contact Binary Stars [PDF]

International Astronomical Union Colloquium, 1999
AbstractGamma-velocities of bright contact binary stars (VW Cep, SW Lac, AB And, OO Aql) have been computed using cross-correlation. The template spectra were synthesized with a newly developed computer code WGMODEL.
G. Kaszás, J. Vinkó, G. Fürész
openaire   +1 more source

Single‐cell DNA methylation profiling: Technologies, computation, and applications in precision oncology

Molecular Oncology, EarlyView.
Single‐cell DNA methylation (scDNAme) profiling maps epimutational clonal evolution, revealing mechanisms of malignancy and therapeutic resistance across diverse cancer types. By providing a high‐resolution landscape of intratumoral heterogeneity, these technologies empower precise patient stratification, guide the development of enhanced ...
Ik Soo Kim
wiley   +1 more source