An in-depth study of HD 174966 with CoRoT photometry and HARPS spectroscopy: Large separation as a new observable for δ  Scuti stars

The aim of this work was to use a multi-approach technique to derive the most accurate values possible of the physical parameters of the delta Set star HD 174966, which was observed with the CoRoT satellite. In addition, we searched for a periodic pattern in the frequency spectra with the goal of us...

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Published in:Astronomy and astrophysics (Berlin) 2013-11, Vol.559, p.1-14
Main Authors: Hernandez, A Garcia, Moya, A, Michel, E, Suarez, J C, Poretti, E, Martin-Ruiz, S, Amado, P J, Garrido, R, Rodriguez, E, Rainer, M, Uytterhoeven, K
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics
Density
Fourier analysis
Light curve
Photometry
Physics
Spectra
Spectroscopy
Stars
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container_title Astronomy and astrophysics (Berlin)
container_volume 559
creator Hernandez, A Garcia
Moya, A
Michel, E
Suarez, J C
Poretti, E
Martin-Ruiz, S
Amado, P J
Garrido, R
Rodriguez, E
Rainer, M
Uytterhoeven, K
description The aim of this work was to use a multi-approach technique to derive the most accurate values possible of the physical parameters of the delta Set star HD 174966, which was observed with the CoRoT satellite. In addition, we searched for a periodic pattern in the frequency spectra with the goal of using it to determine the mean density of the star. First, we extracted the frequency content from the CoRoT light curve. Then, we derived the physical parameters of HD 174966 and carried a mode identification out from the spectroscopic and photometric observations. A total of 185 peaks were obtained from the Fourier analysis of the CoRoT light curve, all of which were reliable pulsating frequencies. As a result the value of the mean density is achieved with a 6% uncertainty. So, the delta [nu] pattern could be used as a new observable for A-F type stars.
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subjects Astronomy
Astrophysics
Density
Fourier analysis
Light curve
Photometry
Physics
Spectra
Spectroscopy
Stars
title An in-depth study of HD 174966 with CoRoT photometry and HARPS spectroscopy: Large separation as a new observable for δ  Scuti stars
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