Simultaneous uvby photometry of the new d Sct-type variable HD 205

Autor(en)

Eloy Rodriguez, Victor Costa, Gerald Handler, José Manuel Garcia

Abstrakt

The star HD 205 has been discovered to be a new d Sct-type pulsator through simultaneous uvby photometric observations carried out during the autumn of 2001. A few Hß-Crawford measurements were also collected. The calibration of the Strošmgren photometric indices places this star in the middle part of the d Sct instability strip. The behaviour of the light curves is shown to be very complex with a lot of frequencies necessary to fit the data. The data in the bands, v, b and y were analyzed separately to confirm detected pulsations and then combined using a weighting scheme to maximize the signal-to-noise ratio. Nine frequencies were detected with the present data, but several more are probably present. The majority of the detected frequencies are due to nonradial low order p-modes as is commonl in d Sct variables.

Organisation(en)

Institut für Astrophysik

Externe Organisation(en)

Instituto de Astrofísica de Andalucía, Universidad de Murcia

Journal

Astronomy & Astrophysics

Band

399

Seiten

253-262

Anzahl der Seiten

10

ISSN

0004-6361

Publikationsdatum

2003

Peer-reviewed

Ja

ÖFOS 2012

103003 Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/37841c53-d41c-4f31-bd65-f1084601eb75