J/A+A/325/987 J/A+A/325/987 UBV magnitude of NGC 884 B-type pulsators J Krzesinski A Pigulski Astron. Astrophys. 325 987 1997 1997A&A...325..987K Clusters, open Photometry, UBV Stars, Be open clusters and associations: individual (NGC 884, chi Per) stars: emission-line, Be stars: oscillations stars: variables: other (beta Ceph) We present the results of the photometric CCD search for B-type pulsators in the central region of Chi Persei (NGC 884) open cluster. In addition to the two newly-discovered Beta Cephei stars we found 11 other variables in the observed field. The photometric data for them are given in the file 'bmag' and 'vmag' for B and V-filter data, respectively. In addition, we present the new UBV magnitudes for stars in the observed field. This is Table 4 of the paper, available only in electronic form.

Oo 2246NGC 884 2246BD+56 57202 22 02.7+57 08 25 Oo 2299NGC 884 2299BD+56 57502 22 08.5+57 07 28 Oo 2088NGC 884 2088V506 Per02 21 43.4+57 07 32 Oo 2140NGC 884 214002 21 49.9+57 07 05 Oo 2165NGC 884 2165V507 Per02 21 53.1+57 09 57 Oo 2227NGC 884 2227HD 1444302 22 00.5+57 08 43 Oo 2242NGC 884 224202 22 02.5+57 09 20 Oo 2301NGC 884 230102 22 09.0+57 07 24 Oo 2311NGC 884 2311BD+56 57602 22 09.6+57 07 02 Oo 2371NGC 884 2371BD+56 57802 22 17.6+57 07 25 Oo 2417NGC 884 2417HD 1448802 22 24.2+57 06 34

HJD Heliocentric Julian day d Oo2246 Differential magnitude for Oo 2246, number=1 All magnitude are differential magnitudes in the sense of variable minus comparison, where in all cases the comparison star is the mean magnitude of two comparison stars, Oo 2235 and Oo 2296. mag Oo2299 Differential magnitude for Oo 2299, number=1 All magnitude are differential magnitudes in the sense of variable minus comparison, where in all cases the comparison star is the mean magnitude of two comparison stars, Oo 2235 and Oo 2296. mag Oo2088 Differential magnitude for Oo 2088, number=1 All magnitude are differential magnitudes in the sense of variable minus comparison, where in all cases the comparison star is the mean magnitude of two comparison stars, Oo 2235 and Oo 2296. mag Oo2140 Differential magnitude for Oo 2140, number=1 All magnitude are differential magnitudes in the sense of variable minus comparison, where in all cases the comparison star is the mean magnitude of two comparison stars, Oo 2235 and Oo 2296. mag Oo2165 Differential magnitude for Oo 2165, number=1 All magnitude are differential magnitudes in the sense of variable minus comparison, where in all cases the comparison star is the mean magnitude of two comparison stars, Oo 2235 and Oo 2296. mag Oo2227 Differential magnitude for Oo 2227, number=1 All magnitude are differential magnitudes in the sense of variable minus comparison, where in all cases the comparison star is the mean magnitude of two comparison stars, Oo 2235 and Oo 2296. mag Oo2242 Differential magnitude for Oo 2242, number=1 All magnitude are differential magnitudes in the sense of variable minus comparison, where in all cases the comparison star is the mean magnitude of two comparison stars, Oo 2235 and Oo 2296. mag Oo2301 Differential magnitude for Oo 2301, number=1 All magnitude are differential magnitudes in the sense of variable minus comparison, where in all cases the comparison star is the mean magnitude of two comparison stars, Oo 2235 and Oo 2296. mag Oo2311 Differential magnitude for Oo 2311, number=1 All magnitude are differential magnitudes in the sense of variable minus comparison, where in all cases the comparison star is the mean magnitude of two comparison stars, Oo 2235 and Oo 2296. mag Oo2371 Differential magnitude for Oo 2371, number=1 All magnitude are differential magnitudes in the sense of variable minus comparison, where in all cases the comparison star is the mean magnitude of two comparison stars, Oo 2235 and Oo 2296. mag Oo2417 Differential magnitude for Oo 2417, number=1 All magnitude are differential magnitudes in the sense of variable minus comparison, where in all cases the comparison star is the mean magnitude of two comparison stars, Oo 2235 and Oo 2296. mag Xpos X coordinate of a star (as in Fig.1) pix Ypos Y coordinate of a star (as in Fig.1) pix Name Star designation, see Note number=1 Star numbers are according to Oosterhoff (1937AnLei..17a...1O) except for those preceded by 'W' or 'VM' for which the designations were taken from Wildey (1964ApJ...139..435W) and Vogt & Moffat (1974VeBoc...2....1V), respectively. --- Vmag V magnitude, see Note number=2 For variable stars we use the following rules in listing their UBV magnitudes: for periodic variables (Oo 2246, 2299, 2371) we list the mean magnitudes, while for the eclipsing binaries (Oo 2301 and 2311) the magnitudes at the phase of maximum light are given. For the remaining 6 variables we give the UBV magnitudes at one, arbitrarily chosen epoch, HJD 2450163.338, i.e., the middle of the night March 19/20, 1996. mag B-V B-V colour index, see Note number=2 For variable stars we use the following rules in listing their UBV magnitudes: for periodic variables (Oo 2246, 2299, 2371) we list the mean magnitudes, while for the eclipsing binaries (Oo 2301 and 2311) the magnitudes at the phase of maximum light are given. For the remaining 6 variables we give the UBV magnitudes at one, arbitrarily chosen epoch, HJD 2450163.338, i.e., the middle of the night March 19/20, 1996. mag U-B U-B colour index, see Note number=2 For variable stars we use the following rules in listing their UBV magnitudes: for periodic variables (Oo 2246, 2299, 2371) we list the mean magnitudes, while for the eclipsing binaries (Oo 2301 and 2311) the magnitudes at the phase of maximum light are given. For the remaining 6 variables we give the UBV magnitudes at one, arbitrarily chosen epoch, HJD 2450163.338, i.e., the middle of the night March 19/20, 1996. --- Patricia Bauer CDS 1997Oct16Andrzej Pigulski, <pigulski@astro.uni.wroc.pl> J_A+A_325_987.xml