1998A&A...340..149A

Query : 1998A&A...340..149A

1998A&A...340..149A - Astronomy and Astrophysics, volume 340149-159 (1998/12-1)

Pulsation, binarity and close frequency spacing in δ Scuti stars: BQ and BW Cancri. Results of the STEPHI VI campaign in Praesepe cluster.

ALVAREZ M., HERNANDEZ M.M., MICHEL E., JIANG S.Y., BELMONTE J.A., CHEVRETON M., MASSACRIER G., LIU Y.Y., LI Z.P., GOUPIL M.J., ROCA CORTES T., MANGENEY A., DOLEZ N., VALTIER J.-C., VIDAL I., SPERL M. and TALON S.

Abstract (from CDS):

New pulsation modes in two δ Scuti stars of Praesepe cluster, BQ and BW Cnc, have been detected during the STEPHI VI campaign in 1995. In particular, 3 frequencies for BQ Cnc and 9 frequencies for BW Cnc have been found above a 99% confidence level. The possibility of the presence of a g-mode present in BQ Cnc is discussed, considering its binarity. The effect of mutual interference between very close detected frequencies in BW Cnc during the observations, is also considered. This last effect reveals the necessity of long-period observing runs, in order to avoid its influence in the final number of detected modes. In such situation, studies of secular amplitude changes can be strongly affected.

Abstract Copyright: ∼

Journal keyword(s): stars: oscillations - stars: variables: δSct - stars: individual: BQ Cnc - stars: individual: BW Cnc

Simbad objects: 15

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Number of rows : 15
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 15165 dS* 02 26 45.6478667280 +10 33 55.070566704   6.94 6.69     F0IV 97 0
2 V* V647 Tau dS* 03 47 19.3458598776 +24 08 20.815318464   8.51 8.26   7.97 A7Vs 182 0
3 V* V650 Tau dS* 03 47 26.8283452536 +23 40 41.988023688   7.93 7.79   7.61 A3Van 140 0
4 V* BS Cnc dS* 08 39 09.0975243288 +19 35 32.619758244   8.78 8.59     A9V 130 0
5 * 38 Cnc dS* 08 39 42.6543233112 +19 46 42.436048548   6.88 6.66     F0IV 151 0
6 HD 73574 ** 08 39 42.7802673288 +20 05 10.405586760   9.11 8.85 8.62   A5V 91 0
7 V* BU Cnc dS* 08 39 44.6645719872 +19 16 30.772035552   7.84 7.65     A7Vn 128 0
8 NGC 2632 OpC 08 39 58.4 +19 36 33           ~ 1733 0
9 HD 73712 SB* 08 40 20.1451748712 +19 20 56.315955804   7.04 6.78     A9V 106 0
10 V* BQ Cnc SB* 08 40 26.7477443016 +20 10 55.223326884   8.46 8.15     A9Vn 87 0
11 V* BN Cnc dS* 08 40 39.2340192816 +19 13 41.848124700   8.01 7.80     A9V 120 0
12 V* BW Cnc dS* 08 40 52.4779618920 +20 15 59.472562896   8.74 8.48     F0Vn 116 0
13 V* EP Cnc dS* 08 40 56.2946955456 +19 34 49.228381848 7.090 6.950 6.780     A6Vn 131 0
14 * 63 Her dS* 17 11 03.1634107176 +24 14 15.700660440 6.510 6.410 6.200     A8V 98 0
15 V* GX Peg SB* 22 31 34.3513897128 +29 32 33.935492760 6.630 6.520 6.330     kA6hA8mA8 99 0

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