Search Results for author: F. Anders

Found 3 papers, 1 papers with code

Parameters for > 300 million Gaia stars: Bayesian inference vs. machine learning

no code implementations14 Feb 2023 F. Anders, A. Khalatyan, A. B. A. Queiroz, S. Nepal, C. Chiappini

The Gaia Data Release 3 (DR3), published in June 2022, delivers a diverse set of astrometric, photometric, and spectroscopic measurements for more than a billion stars.

Bayesian Inference

The RAdial Velocity Experiment: Parameterization of RAVE spectra based on Convolutional Neural Network

no code implementations27 Apr 2020 G. Guiglion, G. Matijevic, A. B. A. Queiroz, M. Valentini, M. Steinmetz, C. Chiappini, E. K. Grebel, P. J. McMillan, G. Kordopatis, A. Kunder, T. Zwitter, A. Khalatyan, F. Anders, H. Enke, I. Minchev, G. Monari, R. F. G. Wyse, O. Bienayme, J. Bland-Hawthorn, B. K. Gibson, J. F. Navarro, Q. Parker, W. Reid, G. M. Seabroke, A. Siebert

We trained a CNN, adopting stellar atmospheric parameters and chemical abundances from APOGEE DR16 (resolution R~22500) data as training set labels.

Astrophysics of Galaxies Instrumentation and Methods for Astrophysics Solar and Stellar Astrophysics

Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18

1 code implementation25 Apr 2019 F. Anders, A. Khalatyan, C. Chiappini, A. B. Queiroz, B. X. Santiago, C. Jordi, L. Girardi, A. G. A. Brown, G. Matijevič, G. Monari, T. Cantat-Gaudin, M. Weiler, S. Khan, A. Miglio, I. Carrillo, M. Romero-Gómez, I. Minchev, R. S. de Jong, T. Antoja, P. Ramos, M. Steinmetz, H. Enke

Combining the precise parallaxes and optical photometry delivered by Gaia's second data release (Gaia DR2) with the photometric catalogues of PanSTARRS-1, 2MASS, and AllWISE, we derive Bayesian stellar parameters, distances, and extinctions for 265 million stars brighter than G=18.

Astrophysics of Galaxies Solar and Stellar Astrophysics 85A15

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