2001A&A...380..599A

Query : 2001A&A...380..599A

2001A&A...380..599A - Astronomy and Astrophysics, volume 380, 599-608 (2001/12-3)

A search for new variable stars in NGC 6231.

ARENTOFT T., STERKEN C., KNUDSEN M.R., FREYHAMMER L.M., DUERBECK H.W., POMPEI E., DELAHODDE C.E. and CLASEN J.W.

Abstract (from CDS):

NGC 6231 is a well-studied young open cluster hosting several variable stars. In the field six β Cephei stars, several eclipsing binaries and one δ Scuti star are known (as well as a foreground δ Scuti star). In an ongoing effort to map and study the variability in NGC 6231, we present new results based on CCD time-series data optimised for the bright β Cephei stars as well as data optimised for much fainter stars. We detect 17 new variable stars in the cluster, including three δ Scuti stars, three γ Doradus candidates, three Slowly Pulsating B star candidates and one, or possibly two, new β Cephei stars.

Abstract Copyright: ∼

Journal keyword(s): stars: variables: general - individual: NGC 6231 - techniques: photometric - methods: data analysis

CDS comments: Acronym ASK0171 not in Simbad; ASK0171 = V* V1211 Sco

Simbad objects: 28

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Number of rows : 28
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* V945 Sco bC* 16 53 54.5203569984 -41 52 14.960561412 9.090 9.745 9.575 9.618 9.260 B1V 43 0
2 V* V1032 Sco bC* 16 53 58.6055666592 -41 48 41.790648132 9.327 9.920 9.767 9.811 9.445 B2V 41 0
3 NGC 6231 249 Pu* 16 53 59.3149479480 -41 53 04.040266236 11.810 12.132 11.876 12.11 11.504 B4-5V 14 0
4 V* V946 Sco bC* 16 54 01.7631666120 -41 51 11.868345252 9.890 10.471 10.281 10.327 9.927 B2IV-V 47 0
5 V* V1199 Sco dS* 16 54 01.8665401536 -41 53 23.809520688 15.089 14.655 13.974 14.24 13.124 ~ 14 0
6 V* V1200 Sco gD* 16 54 04.9315146528 -41 56 45.691087488 17.541 16.930 15.713   14.225 ~ 10 0
7 CD-41 11030 SB* 16 54 05.0795262120 -41 50 06.929151792 8.924 9.575 9.457   9.201 B1V 46 0
8 CD-41 11027A Y*? 16 54 06.7182176904 -41 51 06.979097448 8.108 8.848 8.720   8.439 O9.7V 34 0
9 CD-41 11032 SB* 16 54 06.9496123464 -41 49 23.360333088 8.93 9.60 9.512 10.81 9.256 B0.5V 40 0
10 NGC 6231 209 Y*? 16 54 10.7255921880 -41 47 47.372416692 10.307 10.795 10.599 10.62 10.265 B2IV-V 30 0
11 NGC 6231 OpC 16 54 10.8 -41 48 43           ~ 538 0
12 V* V1202 Sco gD* 16 54 12.9361182240 -41 52 28.864465752 16.252 15.772 14.618 14.52 13.223 ~ 10 0
13 V* V1203 Sco dS* 16 54 14.0636549016 -41 53 58.080214788 15.878 15.388 14.690   13.782 ~ 8 0
14 CPD-41 7734 Y*? 16 54 14.2460503200 -41 55 01.326705420 10.103 10.616 10.331 10.25 9.801 B0Vn 28 0
15 V* V1205 Sco dS* 16 54 15.7377001608 -41 51 39.861550332 14.548 13.87 13.22 13.38 12.671 A5III 13 0
16 CD-41 7736 Pu* 16 54 15.7425941640 -41 49 32.321424612 9.859 10.400 10.174 10.14 9.780 B1Vn 32 0
17 CPD-41 7737 Y*? 16 54 16.3028817696 -41 50 26.660630976 10.456 10.955 10.745 10.71 10.387 B1V 23 0
18 V* V964 Sco bC* 16 54 18.3200772432 -41 51 35.651104416 9.126 9.776 9.603 9.61 9.290 B0.5V 59 0
19 CD-41 11042 Y*O 16 54 19.8364084848 -41 50 09.378605616 7.733 9.02 8.80 9.23 7.859 O9.5IV 101 0
20 NGC 6231 233 Y*? 16 54 20.1147403368 -41 51 25.164373644 15.639 15.202 14.120   12.789 ~ 11 0
21 V* V1207 Sco Y*O 16 54 20.6163048120 -41 49 28.631620668 11.062 11.455 11.198 11.23 10.774 B1Vn: 13 0
22 V* V1208 Sco Y*O 16 54 21.3090092232 -41 51 41.766233904 9.293 9.91 9.708 9.96 9.344 B0-2V 47 0
23 V* V1210 Sco gD* 16 54 29.7645693960 -41 55 38.749448172 14.422 14.149 13.701   13.069 ~ 9 0
24 V* V1213 Sco gD* 16 54 33.3548087280 -41 56 32.458697880 16.897 16.291 14.960   13.538 ~ 12 0
25 V* V1214 Sco gD* 16 54 34.1913765240 -41 54 48.514480740 16.371 16.004 15.118   13.956 ~ 5 0
26 V* V1215 Sco gD* 16 54 35.5627001376 -41 53 20.944612716 16.761 16.499 15.671   14.689 ~ 3 0
27 V* V947 Sco bC* 16 54 36.0500878224 -41 53 38.119259292 9.45 10.06 9.78 10.06   B1V 52 0
28 V* V920 Sco bC* 16 54 43.1657949576 -41 49 35.456774916 9.153 9.795 9.601 9.95 9.256 B1V 65 0

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