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Haro 5-2: A New Pre-Main Sequence Quadruple Stellar System
Bo Reipurth, C. Briceno, T. R. Geballe +9
We have discovered that the Halpha emission line star Haro 5-2, located in the 3-6 Myr old Ori OB1b association, is a young quadruple system. The system has a 2+2 configuration wit…
TESS Hunt for Young and Maturing Exoplanets (THYME) IX: a 27 Myr extended population of Lower-Centaurus Crux with a transiting two-planet system
Mackenna L. Wood, Andrew W. Mann, Madyson G. Barber +35
We report the discovery and characterization of a nearby (~ 85 pc), older (27 +/- 3 Myr), distributed stellar population near Lower-Centaurus-Crux (LCC), initially identified by se…
Large amplitude periodic outbursts and long period variables in the VVV VIRAC2- database
Zhen Guo, P. W. Lucas, L. C. Smith +13
The VISTA Variables in the Via Lactea (VVV) survey obtained near-infrared photometry toward the Galactic bulge and the southern disc plane for a decade (2010 - 2019). We designed a…
Statistics of wide pre-main sequence binaries in the Orion OB1 association
Andrei Tokovinin, Monika Petr-Gotzens, Cesar Briceno
Statistics of low-mass pre-main sequence binaries in the Orion OB1 association with separations ranging from 0.6" to 20" (220 to 7400 au at 370 pc) are studied using images from th…
TOI-811b and TOI-852b: New transiting brown dwarfs with similar masses and very different radii and ages from the TESS mission
Theron W. Carmichael, Samuel N. Quinn, George Zhou +17
We report the discovery of two transiting brown dwarfs (BDs), TOI-811b and TOI-852b, from NASA's Transiting Exoplanet Survey Satellite mission. These two transiting BDs have simila…
TIC 278956474: Two close binaries in one young quadruple system, identified by \textit{TESS}
Pamela Rowden, Tamás Borkovits, Jon M. Jenkins +25
We have identified a quadruple system with two close eclipsing binaries in TESS data. The object is unresolved in Gaia and appears as a single source at parallax 1.08~0.01 mas…