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6 papers · 2 filters
The SAPP pipeline for the determination of stellar abundances and atmospheric parameters of stars in the core program of the PLATO mission
Matthew Raymond Gent, Maria Bergemann, Aldo Serenelli +25
We introduce the SAPP (Stellar Abundances and atmospheric Parameters Pipeline), the prototype of the code that will be used to determine parameters of stars observed within the cor…
Discovery of eight 'Main-sequence Radio Pulse emitters' using the GMRT: clues to the onset of coherent radio emission in hot magnetic stars
Barnali Das, Poonam Chandra, Matt E. Shultz +6
'Main-sequence radio pulse-emitters' (MRPs) are magnetic early-type stars from which periodic radio pulses, produced via electron cyclotron maser emission (ECME), are observed. Des…
Changes in granulation scales over the solar cycle seen with SDO/HMI and Hinode/SOT
J. Ballot, T. Roudier, J. M. Malherbe +1
The Sun is the only star where the superficial turbulent convection can be observed at very high spatial resolution. The Solar Dynamics Observatory (SDO) has continuously observed…
Seismic constraints on the internal structure of evolved stars: From high-luminosity RGB to AGB stars
G. Dréau, B. Mosser, Y. Lebreton +2
The space-borne missions CoRoT and Kepler opened up a new opportunity for better understanding stellar evolution by probing stellar interiors with unrivalled high-precision photome…
Photospheric downflows observed with SDO/HMI, HINODE, and an MHD simulation
T. Roudier, M. Švanda, J. M. Malherbe +3
Downflows on the solar surface are suspected to play a major role in the dynamics of the convection zone. We investigate the existence of the long-lasting downflows whose effects i…
Characterization of the variability in the O+B eclipsing binary HD 165246
Cole Johnston, Nicolas Aimar, Michael Abdul-Masih +8
O-stars are known to experience a wide range of variability mechanisms originating at both their surface and their near-core regions. Characterization and understanding of this var…