Results 141 to 150 of about 51,217 (241)

Search for Past Stellar Encounters and the Origin of 3I/ATLAS

The Astronomical Journal
3I/ATLAS, the third discovered interstellar object, has a heliocentric speed of 58 km s ^−1 and exhibits cometary activity. To constrain the origin of 3I/ATLAS and its past dynamical evolution, we propagate the orbits of 3I/ATLAS and nearby stars to ...
Yiyang Guo, Luyao Zhang, Fabo Feng, Zhao-Yu Li, Anton Pomazan, Xiaohu Yang   +5 more
doaj   +1 more source

Jupiter-like planets might be common in a low-density environment. [PDF]

Nat Commun, 2023
Gratton R, Mesa D, Bonavita M, Zurlo A, Marino S, Kervella P, Desidera S, D'Orazi V, Rigliaco E.   +8 more
europepmc   +1 more source

The BANANA Project. VII. High Eccentricity Predicts Spin–Orbit Misalignment in Binaries

The Astrophysical Journal
The degree of spin–orbit alignment in a population of binary stars can be determined from measurements of their orbital inclinations and rotational broadening of their spectral lines.
Marcus L. Marcussen, Simon H. Albrecht, Joshua N. Winn, Yubo Su, Mia S. Lundkvist, Kevin C. Schlaufman   +5 more
doaj   +1 more source

Physical characterization of late-type contact binary systems observed by LAMOST: a comprehensive statistical analysis. [PDF]

Sci Rep, 2023
Abdel Rahman HI, Darwish M.
europepmc   +1 more source

Orbital and Physical Properties of the Pleiades Binary 27 Tau (Atlas)

The Astrophysical Journal
We report new spectroscopic and interferometric observations of the Pleiades binary star Atlas, which played an important role nearly 3 decades ago in settling the debate over the distance to the cluster from ground-based and space-based determinations ...
Guillermo Torres, Andrew Tkachenko, Krešimir Pavlovski, Seth Gossage, Gail H. Schaefer, Carl Melis, Michael Ireland, John D. Monnier, Narsireddy Anugu, Stefan Kraus, Cyprien Lanthermann, Kathryn Gordon, Robert Klement, Simon J. Murphy, Rachael M. Roettenbacher   +14 more
doaj   +1 more source

Swift Observations of Gaia BH3

The Astrophysical Journal
We present UV and X-ray observations, obtained with the Swift Observatory, of Gaia BH3, a binary system containing a 33 M _⊙ black hole discovered through Gaia astrometry. The system is well detected in all UV and optical filters (1700–6500 Å).
Boris Sbarufatti, Renato Falomo, Aldo Treves   +2 more
doaj   +1 more source

Precise Physical Parameters, Habitability, and Orbital Stability of Sun-like SB2 Systems: HD 130669, HD 184467, HD 191854, and HD 214222

The Astronomical Journal
This work analyzes four Sun-like double-lined spectroscopic binary systems by combining visual and spectroscopic observational data with Al-Wardat’s atmospheric modeling method to accurately determine their fundamental parameters.
Ahmad Abushattal, Nikolaos Georgakarakos, Mashhoor A. Al-Wardat, Bilal Algnamat, Hassan B. Haboubi, Deshinta Arrova Dewi, Enas M. Abu-Alrob, Abdallah M. Hussein   +7 more
doaj   +1 more source

A binary pulsar in a 53-minute orbit. [PDF]

Nature, 2023
Pan Z, Lu JG, Jiang P, Han JL, Chen HL, Han ZW, Liu K, Qian L, Xu RX, Zhang B, Luo JT, Yan Z, Yang ZL, Zhou DJ, Wang PF, Wang C, Li MH, Zhu M.   +17 more
europepmc   +1 more source

A Dual-Purpose Camera for Attitude Determination and Resident Space Object Detection on a Stratospheric Balloon. [PDF]

Sensors (Basel), 2023
Chianelli G, Kunalakantha P, Myhre M, Lee RSK.   +3 more
europepmc   +1 more source

Astrometric-spectroscopy binary star orbits. IV - Beta Coronae Borealis

The Astronomical Journal, 1990
Karl W. Kamper, Harold A. McAlister, William I. Hartkopf   +2 more
openaire   +1 more source