2001MNRAS.323..872B

Query : 2001MNRAS.323..872B

2001MNRAS.323..872B - Mon. Not. R. Astron. Soc., 323, 872-886 (2001/June-1)

Fundamental parameters and new variables of the galactic open cluster NGC 7128.

BALOG Z., DELGADO A.J., MOITINHO A., FURESZ G., KASZAS G., VINKO J. and ALFARO E.J.

Abstract (from CDS):

CCD photometry in Johnson UBV and Strömgren uvby systems and medium-resolution spectroscopy of the galactic open cluster NGC 7128 are presented. Spectral types of the brightest 12 stars in the cluster field were determined based on equivalent widths of the Hα and the Hei 6678-Å line. The spectroscopic observations also revealed two obvious and one probable Be-type stars showing Hα emission. The analysis of the photometric diagrams gave a colour excess of E(B-V)=1.03±0.06mag, a distance modulus DM=13.0±0.2mag and an age above 10Myr. Time-resolved photometric observations obtained on one night resulted in the detection of short time-scale light variations of seven new and three already known variable stars in the cluster field.

Abstract Copyright: The Royal Astronomical Society

Journal keyword(s): techniques: photometric - techniques: spectroscopic - stars: variables: other - open clusters and associations: individual: NGC 7128

Nomenclature: Table 5: Cl* NGC 7128 BDM NNN (No. 718) N=1.

CDS comments: Table 5: Stars have a WEBDA designation, not in SIMBAD: Stars NN<25 are Cl* NGC 7128 HJ NN, Stars NN>25 are Cl* NGC 7128 HJP with the number 'NN' in col(3) in WEBDA, Stars 1NNN are Cl* NGC 7128 BAR NNN.

Simbad objects: 38

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Number of rows : 38
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 19807 * 03 12 30.7472380248 +37 09 03.425639616   9.25 8.97 10.3   B9.5V 9 0
2 HD 21071 Pu* 03 25 57.3820460520 +49 07 14.729885580 5.53 6.02 6.09     B7V 180 0
3 * gam Oph PM* 17 47 53.5605898827 +02 42 26.204838837 3.83 3.80 3.75 3.71 3.71 A1VnkA0mA0 411 0
4 M 16 OpC 18 18 45.1 -13 47 31           ~ 1084 1
5 HD 178849 * 19 08 45.1963846656 +34 45 37.084339152   6.916 7.053     B3V 41 0
6 NGC 6823 OpC 19 43 11.3 +23 18 32   7.71 7.1     ~ 279 2
7 NGC 6871 OpC 20 06 07.9 +35 46 45   5.43 5.2     ~ 237 0
8 HD 191746 Pu* 20 10 31.8222281640 +28 26 03.381187056 6.51 7.168 7.189     B2IV 44 0
9 IC 4996 OpC 20 16 32.7 +37 38 46           ~ 187 0
10 NGC 6910 OpC 20 23 12.2 +40 46 16           ~ 202 0
11 M 29 OpC 20 23 42.9 +38 29 25   7.30 6.6     ~ 256 0
12 NGC 7067 OpC 21 24 14.0 +48 00 55   10.64 9.7     ~ 63 0
13 HD 206183 * 21 38 26.2840588344 +56 58 25.459055868 6.75 7.55 7.41     O9.5IV-V 103 0
14 V* V2349 Cyg EB* 21 43 43.5703146792 +53 46 00.747191316   17.79       ~ 5 0
15 V* V2351 Cyg LP* 21 43 47.7503862600 +53 42 46.934844732       12.46   ~ 3 0
16 V* V2350 Cyg EB* 21 43 50.2842438288 +53 42 47.262028284           ~ 8 0
17 V* V2261 Cyg EB* 21 43 55.1698586328 +53 43 42.807661752   14.49 13.61 13.11   ~ 9 0
18 LS III +53 11 * 21 43 55.2874625016 +53 42 41.729350608   13.05 12.18 11.90   ~ 8 0
19 V* V2262 Cyg s?r 21 43 56.3077941024 +53 42 42.670052316   12.43 10.79 10.29   K:I? 6 0
20 V* V1481 Cyg EB* 21 43 56.6342545848 +53 43 19.937843292   13.13 12.35   11.360 B2V 21 0
21 Cl* NGC 7128 HJ 7 * 21 43 57.4226630592 +53 43 32.020609332 13.36 13.42 12.65     B2:V 10 0
22 NGC 7128 OpC 21 43 58.0 +53 43 00   10.54 9.7     ~ 82 0
23 V* V2352 Cyg EB* 21 43 58.2643437168 +53 42 44.754423264   16.37 15.36 16.19   ~ 8 0
24 V* V1814 Cyg Ir* 21 43 59.1300066816 +53 42 05.476976964   11.7 11.2     B3 15 0
25 Cl* NGC 7128 HJ 39 EB* 21 44 00.9853832328 +53 44 59.966923920   15.94 14.74     ~ 4 0
26 LS III +53 14 * 21 44 02.0123101968 +53 43 27.120357156   13.27 12.55     B2V 10 0
27 V* V2353 Cyg Be* 21 44 02.9701222392 +53 42 11.822590584       13.09   B1Ve 11 0
28 V* V2263 Cyg EB* 21 44 03.5067696216 +53 42 46.109642400 12.81 13.10 12.29 12.26 11.516 B1 20 0
29 BD+53 2693 s*r 21 44 04.3226724600 +53 42 11.832224076   11.97 9.491 9.04   K2Ia 16 0
30 V* V2354 Cyg Be* 21 44 05.2735889736 +53 42 35.886836376   15.08 14.32     B5Ve 7 0
31 V* V2355 Cyg EB* 21 44 07.2996875976 +53 41 55.531884156   16.06 14.20     ~ 5 0
32 V* V2264 Cyg RS* 21 44 11.4225068760 +53 44 18.233702124           ~ 10 0
33 Cl* NGC 7128 HJ 8 * 21 44 19 +53 43.5   13.27 12.67     B7.5 1 0
34 HD 207538 * 21 47 39.7896725544 +59 42 01.348647696 7 7.55 7.30     O9.7IV 213 1
35 * 14 Cep SB* 22 02 04.5726270264 +58 00 01.309758516 4.77 5.551 5.542     O9IV(n)var+B1:V: 262 0
36 * 35 Peg PM* 22 27 51.5231162634 +04 41 44.404460456 6.74 5.86 4.80 4.02 3.46 K1-III-IV 276 0
37 * 42 Peg PM* 22 41 27.7207176 +10 49 52.907917 3.10 3.33 3.41 3.43 3.50 B8.5IV 320 0
38 Cl* NGC 7128 HJ 170 V* ~ ~     17.69     ~ 2 0

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