Analysis of MERCATOR data - Part II: variable A &amp; F stars

Cuypers, J.

doi:10.1553/cia147s52

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…In previous analyses of the Mercator data (De Ridder et al 2004;Cuypers et al 2006) only two frequencies were found, but now the three frequencies, as given by Henry et al (2005), could be confirmed without any doubt. The threefrequency solution is also clearly present in the Hipparcos data of this star.…”

Section: Hd 2842 = Hip 2510mentioning

confidence: 78%

Long-term photometric monitoring with the Mercator telescope. Frequencies and multicolour amplitudes of $γ$ Doradus stars

Cuypers,

Aerts,

De Cat

et al. 2009

Preprint

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Context. γ Dor stars are excellent targets for asteroseismology since the gravity modes present in these stars probe the deep stellar interiors. Mode identification will improve the knowledge of these stars considerably. Aims. A selected group of γ Dor stars and some candidates were observed with the Mercator telescope to find and/or confirm the periodicities in the light variations and to derive reliable amplitude ratios in different pass bands. Methods. A frequency analysis was performed on all new data obtained in the Geneva photometric system. In order to have more reliable and accurate frequencies, the new data were combined with similar data from the literature and with Hipparcos observations. A set of frequencies that minimized the the residuals in a harmonic fit was searched for while allowing means and amplitudes to vary from one observation set to another. Results. Frequencies and amplitudes in the photometric passbands of the Geneva system are given for 21 γ Dor stars. We report the discovery of HD 74504 as a newly found γ Dor star. Conclusions. Our study provides the first extensive multicolour database for the understanding of gravity modes in F-type stars

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Section: Hd 2842 = Hip 2510mentioning

confidence: 78%

Long-term photometric monitoring with the Mercator telescope. Frequencies and multicolour amplitudes of $γ$ Doradus stars

Cuypers,

Aerts,

De Cat

et al. 2009

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

Long-term photometric monitoring with the Mercator telescope

Cuypers¹,

Aerts

Cat³

et al. 2009

A&A

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Context. γ Dor stars are excellent targets for asteroseismology since the gravity modes present in these stars probe the deep stellar interiors. Mode identification will improve the knowledge of these stars considerably. Aims. A selected group of γ Dor stars and some candidates were observed with the Mercator telescope to find and/or confirm the periodicities in the light variations and to derive reliable amplitude ratios in different pass bands. Methods. A frequency analysis was performed on all new data obtained in the Geneva photometric system. In order to have more reliable and accurate frequencies, the new data were combined with similar data from the literature and with Hipparcos observations. A set of frequencies that minimized the residuals in a harmonic fit was searched for while allowing means and amplitudes to vary from one observation set to another. Results. Frequencies and amplitudes in the photometric passbands of the Geneva system are given for 21 γ Dor stars. We report the discovery of HD 74504 as a newly found γ Dor star. Conclusions. Our study provides the first extensive multicolour database for the understanding of gravity modes in F-type stars.

show abstract

Analysis of MERCATOR data - Part II: variable A & F stars

Cited by 2 publications

References 3 publications

Long-term photometric monitoring with the Mercator telescope. Frequencies and multicolour amplitudes of $γ$ Doradus stars

Long-term photometric monitoring with the Mercator telescope. Frequencies and multicolour amplitudes of $γ$ Doradus stars

Long-term photometric monitoring with the Mercator telescope

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