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8 papers · 2 filters
KIC 7955301: a hierarchical triple system with eclipse timing variations and an oscillating red giant
P. Gaulme, T. Borkovits, T. Appourchaux +13
KIC 7955301 is a hierarchical triple system with eclipse timing and depth variations discovered by the Kepler mission. It is composed of a non-eclipsing primary star at the bottom…
Mode Mixing and Rotational Splittings: I. Near-Degeneracy Effects Revisited
J. M. Joel Ong, Lisa Bugnet, Sarbani Basu
Rotation is typically assumed to induce strictly symmetric rotational splitting into the rotational multiplets of pure p- and g-modes. However, for evolved stars exhibiting mixed m…
Bump Morphology of the CMAGIC Diagram
L. Aldoroty, L. Wang, P. Hoeflich +38
We apply the color-magnitude intercept calibration method (CMAGIC) to the Nearby Supernova Factory SNe Ia spectrophotometric dataset. The currently existing CMAGIC parameters are t…
Improved asteroseismic inversions for red-giant surface rotation rates
F. Ahlborn, E. P. Bellinger, S. Hekker +2
Asteroseismic observations of internal stellar rotation have indicated a substantial lack of angular momentum transport in theoretical models of subgiant and red-giant stars. Accur…
Solar-like oscillations and ellipsoidal variations in TESS observations of the binary 12 Boötis
Warrick H. Ball, Andrea Miglio, William J. Chaplin +14
Binary stars in which oscillations can be studied in either or both components can provide powerful constraints on our understanding of stellar physics. The bright binary 12 Boötis…
HMI Ring Diagram Analysis: Effects of tracking, noise and resolution
Sarbani Basu, Richard S. Bogart
Ring diagram analysis is a standard local helioseismic technique. Data from the Helioseismic and Magnetic Imager (HMI) on the Solar Dynamics Observatory (SDO) are routinely used fo…