no code implementations • 22 Dec 2020 • Tomaž Zwitter, Janez Kos, Sven Buder, Klemen Čotar, Martin Asplund, Joss Bland-Hawthorn, Andrew R. Casey, Gayandhi M. De Silva, Valentina D'Orazi, Kenneth C. Freeman, Michael R. Hayden, Geraint F. Lewis, Jane Lin, Karin Lind, Sarah L. Martell, Katharine J. Schlesinger, Sanjib Sharma, Jeffrey D. Simpson, Dennis Stello, Daniel B. Zucker, Kevin L. Beeson, Richard de Grijs, Thomas Nordlander, Yuan-Sen Ting, Gregor Traven, Fred Watson, Rob Wittenmyer
GALAH+ is a magnitude-limited survey of high resolution stellar spectra obtained by the HERMES spectrograph at the Australian Astronomical Observatory.
Solar and Stellar Astrophysics Astrophysics of Galaxies Instrumentation and Methods for Astrophysics
no code implementations • 30 Nov 2020 • J. Ted Mackereth, Andrea Miglio, Yvonne Elsworth, Benoit Mosser, Savita Mathur, Rafael A. Garcia, Domenico Nardiello, Oliver J. Hall, Mathieu Vrard, Warrick H. Ball, Sarbani Basu, Rachael L. Beaton, Paul G. Beck, Maria Bergemann, Diego Bossini, Luca Casagrande, Tiago L. Campante, William J. Chaplin, Christina Chiappini, Léo Girardi, Andreas Christ Sølvsten Jørgensen, Saniya Khan, Josefina Montalbán, Martin B. Nielsen, Marc H. Pinsonneault, Thaíse S. Rodrigues, Aldo Serenelli, Victor Silva Aguirre, Dennis Stello, Jamie Tayar, Johanna Teske, Jennifer L. van Saders, Emma Willett
Better quality astrometry and simpler target selection than the $\it{Kepler}$ sample makes this data ideal for studies of the local star formation history and evolution of the Galactic disc.
Astrophysics of Galaxies
1 code implementation • 4 Nov 2020 • Sven Buder, Sanjib Sharma, Janez Kos, Anish M. Amarsi, Thomas Nordlander, Karin Lind, Sarah L. Martell, Martin Asplund, Joss Bland-Hawthorn, Andrew R. Casey, Gayandhi M. De Silva, Valentina D'Orazi, Ken C. Freeman, Michael R. Hayden, Geraint F. Lewis, Jane Lin, Katharine. J. Schlesinger, Jeffrey D. Simpson, Dennis Stello, Daniel B. Zucker, Tomaz Zwitter, Kevin L. Beeson, Tobias Buck, Luca Casagrande, Jake T. Clark, Klemen Cotar, Gary S. Da Costa, Richard de Grijs, Diane Feuillet, Jonathan Horner, Shourya Khanna, Prajwal R. Kafle, Fan Liu, Benjamin T. Montet, Govind Nandakumar, David M. Nataf, Melissa K. Ness, Lorenzo Spina, Gregor Traven, Thor Trepper-Garcia, Yuan-Sen Ting, Rok Vogrincic, Robert A. Wittenmyer, Marusa Zerjal, the GALAH collaboration
Based on kinematics, 4% are halo stars.
Astrophysics of Galaxies Solar and Stellar Astrophysics
no code implementations • 18 Jan 2019 • Torben Arentoft, Frank Grundahl, Timothy R. White, Ditte Slumstrup, Rasmus Handberg, Mikkel N. Lund, Karsten Brogaard, Mads F. Andersen, Victor Silva Aguirre, Chunguang Zhang, Xiaodian Chen, Zhengzhou Yan, Benjamin J. S. Pope, Daniel Huber, Hans Kjeldsen, Jørgen Christensen-Dalsgaard, Jens Jessen-Hansen, Victoria Antoci, Søren Frandsen, Timothy R. Bedding, Pere L. Palle, Rafael A. Garcia, Licai Deng, Marc Hon, Dennis Stello, Uffe G. Jørgensen
Using asteroseismic techniques combined with other methods, we aim to derive physical parameters and the evolutionary stage for the planet hosting star epsilon Tau, which is one of the four red giants located in the Hyades.
Solar and Stellar Astrophysics
2 code implementations • 13 Feb 2018 • Jie Yu, Daniel Huber, Timothy R. Bedding, Dennis Stello, Marc Hon, Simon J. Murphy, Shourya Khanna
Thanks to the large red giant sample, we confirm that red-giant-branch (RGB) and helium-core-burning (HeB) stars collectively differ in the distribution of oscillation amplitude, granulation power, and width of power excess, which is mainly due to the mass difference.
Solar and Stellar Astrophysics