Results 21 to 30 of about 19,129 (209)
Five New Sirius-like White Dwarf–Main-sequence Star Systems with MagAO-X
The Astronomical JournalMost known white dwarfs in multiple systems with main-sequence stars have been discovered with M-type companions, because the white dwarf causes detectable UV excess and bluer colors than expected from a single M star.
Logan A. Pearce +22 more
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CLOSE BINARY SYSTEMS ON LATE EVOLUTIONARY STAGES
Odessa Astronomical Publications, 2017 Observational and theoretical progress in investigations of close binary stars allow to understand the nature and evolution of many types of close binary systems containing peculiar components: Wolf-Rayet stars, white dwarfs neutron stars and black holes.
A. M. Cherepashchuk
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проект байкал, 2021 Baroque and classicism were called a binary star. In the national architecture, the avant-garde and neoclassicism can be also called a binary star. The model of succession of styles in architecture does not reflect the real situation in the 1920-1950s. Neoclassicism and different movements of “contemporary architecture” run parallel to each other both ...
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TESS Photometry and LAMOST Spectroscopy of 10 Detached Eclipsing Binaries
The Astronomical JournalThis study presents a thorough analysis of 10 detached eclipsing binaries that contain main-sequence stars. We have utilized a multifaceted approach, incorporating data from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST), TESS ...
Mengxin Wang +9 more
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Detection of Contact Binary Candidates Observed By TESS Using the Autoencoder Neural Network
The Astronomical JournalA contact binary may be the progenitor of a red nova that eventually produces a merger event and have a cut-off period of around 0.2 days. Therefore, a large number of contact binaries is needed to search for the progenitor of red novae and to study the ...
Xu Ding +3 more
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TIC 290061484: A Triply Eclipsing Triple System with the Shortest Known Outer Period of 24.5 Days
The Astrophysical JournalWe have discovered a triply eclipsing triple-star system, TIC 290061484, with the shortest known outer period, P _out , of only 24.5 days. This “eclipses” the previous record set by λ Tauri at 33.02 days, which held for 68 yr.
V. B. Kostov +15 more
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Spectroscopic Orbits of Subsystems in Multiple Stars. XI
The Astronomical JournalAdding to the large radial velocity survey of nearby solar-type stars (summary in Tokovinin, 2023a), spectroscopic orbits are determined for four hierarchical systems: HIP 49442 (inner and outer periods of 164.55 days and 34 yr, respectively), HIP 55691 (
Andrei Tokovinin
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The Astrophysical Journal, 1974 It is pointed out that the energy radiated by HD 101584 (F2e Iap) at IR frequencies cannot be convincingly explained by thermal reradiation from atmospheric grains. It is theorized that this energy emission can be explained by assuming that the F supergiant has an M supergiant companion responsible for IR radiation.
Roberta M. Humphreys, E. P. Ney
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Orbits of Twelve Multiple Stars
The Astronomical JournalInner and outer orbits in 12 hierarchical stellar systems are determined using high-resolution speckle imaging, radial velocities, or both. Masses and fluxes of the components are estimated. The Hipparcos numbers of the main stars are 7111, 12912, 17895,
Andrei Tokovinin
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Bimodal Black Hole Mass Distribution and Chirp Masses of Binary Black Hole Mergers
The Astrophysical Journal Letters, 2023 In binary black hole mergers from isolated binary-star evolution, both black holes are from progenitor stars that have lost their hydrogen-rich envelopes by binary mass transfer.
Fabian R. N. Schneider +2 more
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