Results 11 to 20 of about 202,502 (193)
Cool Companions to White Dwarfs from the 2MASS Second Incremental Data Release [PDF]
, 2002 We present near-infrared magnitudes for all white dwarfs (selected from the catalog of McCook & Sion) contained in the 2 Micron All Sky Survey Second Incremental Data Release(2MASS 2IDR). We show that the near-IR color-color diagram is an effective means
D. W. Hoard +11 more
core +3 more sources
The evolution of photo-evaporating viscous discs in binaries [PDF]
, 2017 A large fraction of stars are in binary systems, yet the evolution of proto-planetary discs in binaries has been little explored from the theoretical side.
Clarke, Cathie J., Rosotti, Giovanni P.
core +2 more sources
Binary Be Stars and Be Binaries [PDF]
Symposium - International Astronomical Union, 1992 Two hypotheses have been put forward for the rôle of binarity in Be stars: (1) All Be stars are interacting binaries. (2) Roughly one-half of the observed Be stars are post-mass exchange binaries with compact companions. Contrary to (1), (2) does not attempt to explain also the existence of disks in Be stars.
openaire +1 more source
Formation of Neutral Disk-Like Zone Around the Active Hot Stars in Symbiotic Binaries
Open Astronomy, 2012 In this contribution we present the ionization structure in the enhanced wind from the hot star in symbiotic binaries during active phases. Rotation of the hot star leads to the compression of the outflowing material towards its equatorial plane.
Cariková Z., Skopal A.
doaj +1 more source
Mass Ejection from the Symbiotic Prototype Z and During its 2006 Outburst
Open Astronomy, 2012 High-resolution spectroscopic observations in the region of the Balmer Hα and Hγ lines of the symbiotic binary Z And were performed during its major eruption in 2006.
Tomov N. A. +2 more
doaj +1 more source
Galaxies, 2023 We investigate some properties of exotic spherical configurations made of dark matter and dark energy. For the former, we adopt a polytropic equation-of-state, while for the latter, we adopt the extended Chaplygin gas equation-of-state.
Camila Sepúlveda, Grigoris Panotopoulos
doaj +1 more source
Collisional Hardening of Compact Binaries in Globular Clusters [PDF]
, 2006 We consider essential mechanisms for orbit-shrinkage or "hardening" of compact binaries in globular clusters to the point of Roche-lobe contact and X-ray emission phase, focussing on the process of collisional hardening due to encounters between binaries
Angelini +30 more
core +3 more sources
Symbiotic Nova PU Vul - 33 Years of Observations
Open Astronomy, 2012 We present UBVRI light curves of the symbiotic nova PU Vul after its outburst in 1978. Three observed eclipses of the hot component by the cool one were used to determine the ephemeris of the binary system as JD (Min I) = 2444550(15) + 4897(10) × E days.
Shugarov S., Chochol D., Kolotilov E.
doaj +1 more source
Analyzing Binary Relationships of Identity Labels Using Distributional Semantic Models
Iperstoria, 2023 Following the shift towards quantitative, corpus-based analysis in queer linguistics, I examine the usage of identity labels to explore the binary relationships and predicted normative effects in the case of the online community r/lgbt, a subreddit ...
Hunter Youngquist
doaj +1 more source
Photometric Activity of the Symbiotic Star CH Cyg During 2008–2011
Open Astronomy, 2012 We present results of UBVRC observations of the symbiotic star CH Cyg before and after optical and X-ray bursts in 2009 at various timescales. Rapid variability was found only during a strong burst (U ~ 9.5 mag) in 2009 October, while during the low ...
Shugarov S. +4 more
doaj +1 more source