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| Indexado |
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| DOI | 10.3847/1538-3881/AD12A6 | ||||
| Año | 2024 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
We derive distances and masses of stars from the Sloan Digital Sky Survey (SDSS) Apache Point Observatory Galactic Evolution Experiment Data Release 17 using simple neural networks. Training data for distances comes from Gaia EDR3, supplemented by literature distances for star clusters. For masses, the network is trained using asteroseismic masses for evolved stars and isochrone masses for main-sequence stars. The models are trained on effective temperature, surface gravity, metallicity, and carbon and nitrogen abundances. We found that our distance predictions have median fractional errors that range from approximate to 20% at low log g and approximate to 10% at higher log g with a standard deviation of approximate to 11%. The mass predictions have a standard deviation of +/- 12%. Using the masses, we derive ages for evolved stars based on the correspondence between mass and age for giant stars given by isochrones. The results are compiled into a Value Added Catalog called DistMass that contains distances and masses for 733,901 independent spectra, plus ages for 396,548 evolved stars.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Stone-Martinez, Alexander | Hombre |
New Mexico State Univ - Estados Unidos
New Mexico State University - Estados Unidos |
| 2 | Holtzman, J. A. | Hombre |
New Mexico State Univ - Estados Unidos
New Mexico State University - Estados Unidos |
| 3 | Imig, Julie | Mujer |
New Mexico State Univ - Estados Unidos
Space Telescope Sci Inst - Estados Unidos Space Telescope Science Institute - Estados Unidos New Mexico State University - Estados Unidos |
| 4 | Nitschelm, Christian | Hombre |
Universidad de Antofagasta - Chile
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| 5 | Stassun, Keivan | - |
Vanderbilt Univ - Estados Unidos
Vanderbilt University - Estados Unidos |
| 6 | Brownstein, Joel | Hombre |
Univ Utah - Estados Unidos
The University of Utah - Estados Unidos |
| Fuente |
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| National Science Foundation |
| NSF |
| Alfred P. Sloan Foundation |
| Office of Science |
| National Science Foundation (NSF)https://doi.org/10.13039/100000001 |
| Agradecimiento |
|---|
| A.S-M., J.A.H., and J.I gratefully acknowledge support from NSF grant AST-1909897. |
| Funding for the Sloan Digital Sky Survey IV has been provided by the Alfred P. Sloan Foundation, the U.S. Department of Energy Office of Science, and the Participating Institutions. |
| Funding for the Sloan Digital Sky Survey IV has been provided by the Alfred P. Sloan Foundation, the U.S. Department of Energy Office of Science, and the Participating Institutions. |