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74 papers · 1 filter
Stellar flare study of nearby young moving group members with TESS Data
Andrew Tran, Inseok Song
We analyze TESS data to explore stellar flares and rotational characteristics in members of Nearby Young Moving Groups (NYMGs). Our study focuses on 417 members of NYMGs aged 10-15…
The Morphology of Asteroidal Dust Around White Dwarf Stars: Optical and Near-infrared Pulsations in G29-38
T. von Hippel, J. Farihi, J. L. Provencal +20
More than 36 years have passed since the discovery of the infrared excess from circumstellar dust orbiting the white dwarf G29-38, which at 17.5 pc it is the nearest and brightest…
An unusual reservoir of water emission in the VV CrA A protoplanetary disk
Colette Salyk, Klaus M. Pontoppidan, Andrea Banzatti +7
We present an analysis of an unusual pattern of water vapor emission from the 2 Myr-old low-mass binary system VV CrA, as observed in infrared spectra obtained with VLT-CRIRE…
Improving white dwarfs as chronometers with Gaia parallaxes and spectroscopic metallicities
Adam Moss, Ted von Hippel, Elliot Robinson +9
White dwarfs (WDs) offer unrealized potential in solving two problems in astrophysics: stellar age accuracy and precision. WD cooling ages can be inferred from surface temperatures…
Low-mass members of nearby young stellar moving groups from Gaia EDR3
Jinhee Lee, Inseok Song, Simon J. Murphy
Gaia EDR3 offers greatly improved kinematics for nearby objects, including members of nearby young stellar moving groups (NYMGs). In this study, we aim to identify low-mass NYMG me…
Enhanced Phase Mixing of Torsional Alfvén Waves in Stratified and Divergent Solar Coronal Structures, Paper II: Nonlinear Simulations
Callum Boocock, David Tsiklauri
We use MHD simulations to detect the nonlinear effects of torsional Alfvén wave propagation in a potential magnetic field with exponentially divergent field lines, embedded in a st…