Results 61 to 70 of about 374,157 (297)
The New Version of the Binary Star Database (BDB)
Open Astronomy, 2012 The Binary star database contains data on about 100 000 stellar systems of multiplicity 2 to 22, taken from a large variety of published catalogues for all types of binary stars: visual, orbital, astrometric, interferometric, spectroscopic, photometric ...
Kaygorodov P. +4 more
doaj +1 more source
Search for DA White Dwarf Binary Candidates from LAMOST DR7
Universe, 2023 We obtained spectroscopy data for 761 Degenerate A (DA)white dwarfs (WDs) with multiple LAMOST observations. The radial velocity (RV) of each spectrum was calculated using the cross-correlation function method (CCF), and 60 DA WD binary candidates were ...
Hua-Hui Yan +6 more
doaj +1 more source
Ephemerides of Visual Binaries of highly eccentric orbits [PDF]
, 2013 Ephemerides of binary stars are important information for astronomical observation and research. In this paper, ephemerides of the visual binaries ADS784, ADS13665, A1529, ADS836, ADS 3434, ADS1105 and ADS 3315 have been calculated using a computational ...
Elsanhoury, Waleed, H., W.
core +1 more source
Don’t Believe the Hype(r): The Yellow Supergiants of Westerlund 1
The Astrophysical Journal, 2023 Yellow hypergiants (YHGs) are often presumed to represent a transitional post-red supergiant (RSG) phase for stars ∼30–40 M _⊙ . Here we present visual-wavelength echelle spectra of six YHG candidates in the Galactic cluster Westerlund 1, and we compare ...
Emma R. Beasor +2 more
doaj +1 more source
Dynamical detection of three triple stellar systems in open clusters [PDF]
, 2014 We present a kinematic analysis of three triple stellar systems belonging to two open clusters: CPD-60{\deg}961 and HD66137 in NGC2516, and HD315031 in NGC6530.
Cowley, C. R. +2 more
core +3 more sources
Symbiotic Stars in OGLE Data I. Large Magellanic Cloud Systems [PDF]
, 2013 Symbiotic stars are long-orbital-period interacting-binaries characterized by extended emission over the whole electromagnetic range and by complex photometric and spectroscopic variability.
Angeloni, R. +12 more
core +3 more sources
The triple degenerate star WD1704+481 [PDF]
, 2000 WD1704+481 is a visual binary in which both components are white dwarfs. We present spectra of the H-alpha line of both stars which show that one component (WD1704+481.2 = Sanduleak B = GR 577) is a close binary with two white dwarf components.
Han, Z. +3 more
core +4 more sources
Molecular Oncology, EarlyView.Large multidimensional digital images of cancer tissue are becoming prolific, but many challenges exist to automatically extract relevant information from them using computational tools. We describe publicly available resources that have been developed jointly by expert and non‐expert computational biologists working together during a virtual hackathon
Sandhya Prabhakaran +16 more
wiley +1 more source
Cas A and the Crab Were Not Stellar Binaries At Death [PDF]
, 2017 The majority of massive stars are in binaries, which implies that many core collapse supernovae (ccSNe) should be binaries at the time of the explosion. Here we show that the three most recent, local (visual) SNe (the Crab, CasA and SN1987A) were not binaries, with limits on the initial mass ratios of q=M2/M1<0.1. No quantitative limits have previously
arxiv +1 more source
Visual Orbits & Alignments of Planet Hosting Binary Systems [PDF]
arXiv, 2023 Roughly half of Solar-type planet hosts have stellar companions, so understanding how these binary companions affect the formation and evolution of planets is an important component to understanding planetary systems overall. Measuring the dynamical properties of planet host binaries enables a valuable test of planet formation in multi-star systems and
arxiv