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Main Authors: Bertrand, G., Buil, C., Lain, M. Le, Desnoux, V., Garde, O., Bertrand, E., Blais, A., Broussat, JJ., Bryssinck, E., Dalbin, L., Dupont, X., Garrigós, A., DiLazzaro, M., Leadbeater, R., Lecocq, V., Lecomte, J., Leduc, A., Louis, P., Maetz, A., de Pont, L. Ribé, Stiewing, A., de Visscher, S., Weil, F.
Format: Preprint
Published: 2025
Subjects:
Solar and Stellar Astrophysics
Online Access:https://arxiv.org/abs/2511.17206
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author Bertrand, G.
Buil, C.
Lain, M. Le
Desnoux, V.
Garde, O.
Bertrand, E.
Blais, A.
Broussat, JJ.
Bryssinck, E.
Dalbin, L.
Dupont, X.
Garrigós, A.
DiLazzaro, M.
Leadbeater, R.
Lecocq, V.
Lecomte, J.
Leduc, A.
Louis, P.
Maetz, A.
de Pont, L. Ribé
Stiewing, A.
de Visscher, S.
Weil, F.
author_facet Bertrand, G.
Buil, C.
Lain, M. Le
Desnoux, V.
Garde, O.
Bertrand, E.
Blais, A.
Broussat, JJ.
Bryssinck, E.
Dalbin, L.
Dupont, X.
Garrigós, A.
DiLazzaro, M.
Leadbeater, R.
Lecocq, V.
Lecomte, J.
Leduc, A.
Louis, P.
Maetz, A.
de Pont, L. Ribé
Stiewing, A.
de Visscher, S.
Weil, F.
contents We present the results of a STAROS monitoring campaign on the bright eclipsing binary star alpha Draconis. Over 200 high-resolution spectra were obtained by an international group of amateur astronomers. We were able to calculate an homogeneously covered radial velocity curve and redetermine the orbital elements of the alpha Draconis system. From the data set, we estimated the quality of our observations and accuracy of our radial velocity measurements. Finally, we have also implemented a spectral disentangling method to search for the signature of a companion star and used atmosphere models to constrain the atmospheric parameters of the system.
format Preprint
id arxiv_https___arxiv_org_abs_2511_17206
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Orbital parameters of the bright binary alpha Draconis based on amateur spectra from the STAROS database
Bertrand, G.
Buil, C.
Lain, M. Le
Desnoux, V.
Garde, O.
Bertrand, E.
Blais, A.
Broussat, JJ.
Bryssinck, E.
Dalbin, L.
Dupont, X.
Garrigós, A.
DiLazzaro, M.
Leadbeater, R.
Lecocq, V.
Lecomte, J.
Leduc, A.
Louis, P.
Maetz, A.
de Pont, L. Ribé
Stiewing, A.
de Visscher, S.
Weil, F.
Solar and Stellar Astrophysics
We present the results of a STAROS monitoring campaign on the bright eclipsing binary star alpha Draconis. Over 200 high-resolution spectra were obtained by an international group of amateur astronomers. We were able to calculate an homogeneously covered radial velocity curve and redetermine the orbital elements of the alpha Draconis system. From the data set, we estimated the quality of our observations and accuracy of our radial velocity measurements. Finally, we have also implemented a spectral disentangling method to search for the signature of a companion star and used atmosphere models to constrain the atmospheric parameters of the system.
title Orbital parameters of the bright binary alpha Draconis based on amateur spectra from the STAROS database
topic Solar and Stellar Astrophysics
url https://arxiv.org/abs/2511.17206

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