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Title: 29 frequencies for the delta Scuti variable BICMi: the 1997-2000 multisite campaigns
Authors: Breger, M ×
Garrido, R
Handler, G
Wood, MA
Shobbrook, RR
Bischof, KM
Rodler, F
Gray, RO
Stankov, A
Martinez, P
O'Donoghue, D
Szabo, R
Zima, Wolfgang
Kaye, AB
Barban, C
Heiter, U #
Issue Date: Jan-2002
Publisher: Priestley and Weale
Series Title: Monthly Notices of the Royal Astronomical Society vol:329 issue:3 pages:531-542
Abstract: A multisite campaign of BI CMi was carried out with excellent frequency resolution and high photometric accuracy from 1997 to 2000, including two long observing seasons. 29 pulsation frequencies could be extracted from the 1024 h (177 nights) of photometry used. The detected frequencies include 20 pulsation modes in the main pulsation frequency range from 4.8 to 13.0 cycle d(-1) (55 to 150 RHz), eight linear combinations of these frequencies, and a very low frequency at 1.66 cycle d(-1). Since the value of the low frequency at 1.66 cycle d(-1) cannot be identified with a linear combination of other frequencies, g-mode pulsation is suspected, but rotational modulation of abundance spots cannot be ruled out. BI CMi, which is situated near the cool edge of the classical instability strip, may be both a delta Scuti and a gamma Doradus star. Another outstanding property of BI CMi is the presence of a number of close frequency pairs in the power spectrum with separations as small as 0.01 cycle d(-1),
URI: 
ISSN: 0035-8711
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Institute of Astronomy
× corresponding author
# (joint) last author

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