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The enigmatic multiple star VV Ori
Edwin Budding, John Southworth, Kresimir Pavlovski +6
New photometry, including TESS data, have been combined with recent spectroscopic observations of the Orion Ib pulsating triple-star system VV Ori. This yields a revised set of abs…
Rediscussion of eclipsing binaries. Paper XIV. The F-type system V570 Persei
John Southworth
V570 Per is a binary star system containing two F-type stars in a 1.90 d period circular orbit. It shows shallow partial eclipses that were discovered from its Hipparcos light curv…
OGLE-2019-BLG-0825: Constraints on the Source System and Effect on Binary-lens Parameters arising from a Five Day Xallarap Effect in a Candidate Planetary Microlensing Event
Yuki K. Satoh, Naoki Koshimoto, David P. Bennett +86
We present an analysis of microlensing event OGLE-2019-BLG-0825. This event was identified as a planetary candidate by preliminary modeling. We find that significant residuals from…
TOI-2084 b and TOI-4184 b: two new sub-Neptunes around M dwarf stars
K. Barkaoui, M. Timmermans, A. Soubkiou +67
We present the discovery and validation of two TESS exoplanets orbiting nearby M dwarfs: TOI-2084b, and TOI-4184b. We characterized the host stars by combining spectra from Shane/K…
Rediscussion of eclipsing binaries. Paper XIII. The F-type twin system IT Cassiopeiae
John Southworth
IT Cas is a detached eclipsing binary system containing two F3 V stars in an orbit of period 3.90 d and eccentricity 0.089. Light curves are available from three sectors of observa…
Power-2 limb-darkening coefficients for the , , SDSS , Gaia, Kepler, TESS, and CHEOPS photometric systems II. PHOENIX spherically symmetric stellar atmosphere models
A. Claret, J. Southworth
Multiple parametric limb-darkening laws have been presented, and there are many available sources of theoretical limb-darkening coefficients (LDCs) calculated using stellar model a…