δScuti stars in Praesepe
Open Access
- 15 September 2001
- journal article
- research article
- Published by EDP Sciences in Astronomy & Astrophysics
- Vol. 376 (1) , 175-187
- https://doi.org/10.1051/0004-6361:20010950
Abstract
We present the results of the multisite differential CCD photometry for the two δ Scuti stars, BN and BV Cnc, in the open cluster Praesepe. The main objective was to identify the character of the pulsation modes in BN Cnc deriving their accurate periods, amplitudes and phases. These parameters are essential for the mode identification which uses combined photometric and spectroscopic data and is presented in the second article. For BN Cnc, six pulsation modes with amplitudes above the detection limit (~0.5 mmag) were detected. Using the same CCD frames it was possible to verify the presence of the four pulsation modes in BV Cnc, the faintest of δ Scuti stars in Praesepe. It is shown that in this very low-amplitude pulsator, substantial amplitude variations are seen between 1997 and 1998.Keywords
This publication has 6 references indexed in Scilit:
- A revised catalogue of δ Sct starsAstronomy and Astrophysics Supplement Series, 2000
- The multiperiodic δ Scuti star 4 Canum Venaticorum: 1997 APT photometryAstronomy and Astrophysics Supplement Series, 1999
- Wolfgang-Amadeus: The University of Vienna Twin Automatic Photoelectric TelescopePublications of the Astronomical Society of the Pacific, 1997
- New Whole Earth Telescope observations of CD-24 7599: steps towards Scuti star seismologyMonthly Notices of the Royal Astronomical Society, 1997
- Three Years of Antena: What We Have Done!Published by Springer Nature ,1997
- High-precision time-resolved CCD photometryPublications of the Astronomical Society of the Pacific, 1992