Results 41 to 50 of about 1,451,350 (296)

Widely separated binary systems of very low-mass stars

, 2005
In this paper we review some recent detections of wide binary brown dwarf systems and discuss them in the context of the multiplicity properties of very low-mass stars and brown ...
Phan-Bao, N., Reylé, C., Martín, E. L.
core   +2 more sources

Dynamically Forming Extremely Low-mass White Dwarf Binaries in Wide Orbits

The Astrophysical Journal, 2023
The detection of a 0.2 M _⊙ extremely low-mass white dwarf (EW) in a wide orbit ( P _orb ≈ 450 days) with a 1.1 M _⊙ main-sequence companion, KIC 8145411, challenges our current understanding of how EWs form. The traditional channel for EW formation, via
Ambreesh Khurana, Chirag Chawla, Sourav Chatterjee   +2 more
doaj   +1 more source

The implications of close binary stars for star-disk interactions [PDF]

Proceedings of the International Astronomical Union, 2007
AbstractThe presence of close (≲ 0.1 AU) stellar companions must greatly alter the circumstellar environment of classical T Tauri stars, including severe truncation if not elimination of circumstellar disks. It is thus remarkable how little impact the presence of a close companion has on our observable diagnostics for accretion and outflow.
openaire   +1 more source

Close Encounters of Tight Binary Stars with Stellar-mass Black Holes [PDF]

, 2023
Strong dynamical interactions among stars and compact objects are expected in a variety of astrophysical settings, such as star clusters and the disks of active galactic nuclei. Via a suite of 3D hydrodynamics simulations using the moving-mesh code AREPO,
Perna, R., Farmer, Rob, Ryu, T., Ma, Jing-Ze, de Mink, Selma E., Ma, J.-Z., Pakmor, R., de Mink, S.E., Pakmor, Ruediger, Perna, Rosalba, de Mink, S., Farmer, R., Ma, J., Ryu, Taeho, Ruediger Pakmor, Jing-Ze Ma, Taeho Ryu, Rob Farmer, Selma E de Mink, Rosalba Perna   +19 more
core   +1 more source

Young Binary Star/Disk Interactions [PDF]

International Astronomical Union Colloquium, 1996
AbstractYoung binary star systems have associated gaseous disks that affect their evolution. Strong tidal forces of a binary give rise to gaps that separate circumstellar (CS) disks from the circumbinary (CB) disk. We discuss two important processes that involve binary/disk interactions.
Stephen H. Lubow, Pawel Artymowicz
openaire   +1 more source

Synergistic perspectives—How single‐molecule biophysics complement biochemical understanding

FEBS Letters, EarlyView.
In this review, we discuss how ensemble biochemistry and single‐molecule approaches are complementary, outline commonly used single‐molecule techniques, and illustrate their relevance through two representative case studies: chromatin organization by SMC complexes and pathway choice during DNA double‐strand break repair.
Sara De Bragança, Eline L. Jansen, Jorine M. Eeftens   +2 more
wiley   +1 more source

TESS Light Curve of the Interacting Binary W Serpentis

The Astronomical Journal
The unusal light curve of the massive eclipsing binary W Ser was recently observed with high S/N and fast cadence by the NASA TESS mission. The TESS light curve records two eclipses and relatively fast variations outside of the eclipses.
Douglas R. Gies, Katherine A. Shepard, Aman Kar, Noel D. Richardson   +3 more
doaj   +1 more source

A Mini Atlas of H-Band Spectra of Southern Symbiotic Stars

Galaxies, 2023
Symbiotic stars are interacting binary systems composed of an evolved star (generally a late-type red giant) and a degenerate or dwarf companion in orbit close enough for mass transfer to occur. Understanding the status of the late-type star is important
Paula Esther Marchiano, María Laura Arias, Michaela Kraus, Michalis Kourniotis, Andrea Fabiana Torres, Lydia Sonia Cidale, Marcelo Borges Fernandes   +6 more
doaj   +1 more source

Interacting Binary White Dwarf Stars [PDF]

Symposium - International Astronomical Union, 1992
This group of stars consists of 4 systems, also called helium cataclysmics. Three of them show photometric variations and have been studied by the Whole Earth Telescope (WET), which have revealed multiperiodic light curves showing the signature of g-mode non-radial pulsations on the accreting star.
openaire   +1 more source

A Peculiar Interacting Be Star Binary in the Small Magellanic Cloud [PDF]

Publications of the Astronomical Society of the Pacific, 2018
We find that the emission line object OGLEJ005039.05-725751.4, a member of the cluster OGLE-CL SMC 64, exhibits a peculiar light curve pattern repeating with a recurrence time of 141.45 days. The light curve resembles periodic outbursts with a duty cycle of 20%. A second long-cycle of 2500 days is also detected in the photometric dataset. Two X-SHOOTER
Mennickent, Ronald, Rivinius, Thomas, Cidale, Lydia, Soszyńsk, Igor, Fernández-Trincado, J.   +4 more
openaire   +6 more sources