2001A&A...376..175F

Query : 2001A&A...376..175F

2001A&A...376..175F - Astronomy and Astrophysics, volume 376, 175-187 (2001/9-2)

δ Scuti stars in Praesepe. I. The STACC 1998 campaign - the photometry.

FRANDSEN S., PIGULSKI A., NUSPL J., BREGER M., BELMONTE J.A., DALL T.H., ARENTOFT T., STERKEN C., MEDUPE T., GUPTA S.K., PINHEIRO F.J.G., MONTEIRO M.J.P.F.G., BARBAN C., CHEVRETON M., MICHEL E., BENKO J.M., BARCZA S., SZABO R., KOLACZKOWSKI Z., KOPACKI G. and UDOVICHENKO S.N.

Abstract (from CDS):

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 (∼0.5mmag) 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.

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Journal keyword(s): stars: oscillations - stars: variable: δ Scuti - open clusters and associations: individual: Praesepe

Simbad objects: 9

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Number of rows : 9
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 V* BS Cnc dS* 08 39 09.0975243288 +19 35 32.619758244   8.78 8.59     A9V 123 0
2 * 38 Cnc dS* 08 39 42.6543233112 +19 46 42.436048548   6.88 6.66     F0IV 141 0
3 V* BU Cnc dS* 08 39 44.6645719872 +19 16 30.772035552   7.84 7.65     A7Vn 117 0
4 NGC 2632 OpC 08 40 13.0 +19 37 16           ~ 1566 0
5 HD 73712 SB* 08 40 20.1451748712 +19 20 56.315955804   7.04 6.78     A9V 101 0
6 V* BV Cnc dS* 08 40 32.9592741000 +19 11 39.569214768   8.98 8.72     F0V 90 0
7 V* BN Cnc dS* 08 40 39.2340192816 +19 13 41.848124700   8.01 7.80     A9V 113 0
8 V* XX Pyx dS* 08 58 39.0320074224 -24 35 10.589779932           A4V 82 0
9 V* FG Vir dS* 12 14 15.4565381808 -05 42 59.750820036   6.807 6.558     A8/9V 216 0

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