Search Results for author: Martin Asplund

Found 4 papers, 1 papers with code

The relationship between photometric and spectroscopic oscillation amplitudes from 3D stellar atmosphere simulations

no code implementations3 Feb 2021 Yixiao Zhou, Thomas Nordlander, Luca Casagrande, Meridith Joyce, Yaguang Li, Anish M. Amarsi, Henrique Reggiani, Martin Asplund

For the Sun, we predict theoretical ratios of 21. 0 and 23. 7 ppm/[m/s] from BiSON and SONG respectively, in good agreement with observations 19. 1 and 21. 6 ppm/[m/s].

Solar and Stellar Astrophysics

The COMBS Survey -- II. Distinguishing the Metal-Poor Bulge from the Halo Interlopers

no code implementations8 Sep 2020 Madeline Lucey, Keith Hawkins, Melissa Ness, Victor P. Debattista, Alice Luna, Martin Asplund, Thomas Bensby, Luca Casagrande, Sofia Feltzing, Kenneth C. Freeman, Chiaki Kobayashi, Anna F. Marino

Currently, it is unclear if the metal-poor stars in the bulge ([Fe/H] < -1 dex) are merely halo interlopers, a unique accreted population, part of the boxy/peanut-shaped (B/P) bulge or a classical bulge population.

Astrophysics of Galaxies

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