Analytic Models of Brown Dwarfs and the Substellar Mass Limit by Sayantan Auddy, Shantanu Basu, S. R. Valluri

“…We present the analytic theory of brown dwarf evolution and the lower mass limit of the hydrogen burning main-sequence stars and introduce some modifications to the existing models. …”
Get full text

Analyses of Multiple Balmer Emission Lines from Accreting Brown Dwarfs and Very Low Mass Stars by Jun Hashimoto, Yuhiko Aoyama

“…To address this, we applied both models to archival data consisting of 96 data points from 76 accreting brown dwarfs and very-low-mass stars, with masses ranging from approximately 0.02 to 0.1 M _⊙ , to test which model best explains their accreting properties. …”
Get full text

Redshifting the Study of Cold Brown Dwarfs and Exoplanets: The Mid-infrared Wavelength Region as an Indicator of Surface Gravity and Mass by S. K. Leggett, Pascal Tremblin

Subjects: “…Brown dwarfs…”
Get full text

Gaia-4b and 5b: Radial Velocity Confirmation of Gaia Astrometric Orbital Solutions Reveal a Massive Planet and a Brown Dwarf Orbiting Low-mass Stars by Gudmundur Stefánsson, Suvrath Mahadevan, Joshua N. Winn, Marcus L. Marcussen, Shubham Kanodia, Simon Albrecht, Evan Fitzmaurice, Onė Mikulskytė, Caleb I. Cañas, Juan I. Espinoza-Retamal, Yiri Zwart, Daniel M. Krolikowski, Andrew Hotnisky, Paul Robertson, Jaime A. Alvarado-Montes, Chad F. Bender, Cullen H. Blake, J. R. Callingham, William D. Cochran, Megan Delamer, Scott A. Diddams, Jiayin Dong, Rachel B. Fernandes, Mark R. Giovinazzi, Samuel Halverson, Jessica Libby-Roberts, Sarah E. Logsdon, Michael W. McElwain, Joe P. Ninan, Jayadev Rajagopal, Varghese Reji, Arpita Roy, Christian Schwab, Jason T. Wright

“…Gaia-4b is a massive planet ( M  = 11.8 ± 0.7 M _J ) in a P  = 571.3 ± 1.4 day orbit with a projected semimajor axis a _0  = 0.312 ± 0.040 mas orbiting a 0.644 ± 0.02 M _⊙ star. Gaia-5b is a brown dwarf ( M  = 20.9 ± 0.5 M _J ) in a P  = 358.62 ± 0.20 days eccentric e  = 0.6423 ± 0.0026 orbit with a projected angular semimajor axis of a _0  = 0.947 ± 0.038 mas around a 0.34 ± 0.03 M _⊙ star. …”
Get full text

Gaia astrometry and exoplanetary science: DR2, (E)DR3, and beyond by Sozzetti, Alessandro

Subjects: Get full text