2001A&A...367..831U


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.31CET18:21:18

2001A&A...367..831U - Astronomy and Astrophysics, volume 367, 831-839 (2001/3-1)

Spectroscopic investigations of classical cepheids and main-sequence stars in galactic open clusters and associations. I. Association Cas OB2 and the small-amplitude cepheid SU Cassiopeae.

USENKO I.A., KOVTYUKH V.V., KLOCHKOVA V.G., PANCHUK V.E. and YERMAKOV S.V.

Abstract (from CDS):

The small-amplitude Cepheid SU Cas and four members of the association Cas OB2 (HD 16893, HD 17327a and b, HD 17443) were investigated, using high-resolution CCD spectra. The following results were obtained: 1) All these objects have the same metallicity values, close to that of the Sun; 2) Elemental abundance indicates that SU Cas is a post first dredge-up star with an age from 1x108 to 1.45x108yr, and it is not crossing the Cepheid instability strip for the first time. The mean value of logg=2.35 corresponds to pulsations in the fundamental tone, although errors in gravity estimations provide overtone pulsations. The questions about its pulsational mode and membership in Cas OB2 remained open; 3) HD 17327a is a slowly rotating HgMn-star with the highest helium content among such objects, while HD 16893 also has a manganese overabundance and might be classified as an Am-star; 4) HD 17327b and HD 17443 are rapidly rotating main-sequence stars, while HD 17443 has a helium content comparable with that of the Sun.

Abstract Copyright:

Journal keyword(s): associations - stars: abundances - stars: Cepheids - stars: main-sequence

CDS comments: Table 1: objects Sco OBa, and OBanon, not identified

Simbad objects: 77

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Number of rows : 77

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* CG Cas cC* 00 00 59.2384113995 +60 57 32.432020899   12.70 11.28     F5 79 0
2 V* DL Cas cC* 00 29 58.5886100054 +60 12 43.069687745 10.66 9.88 8.63   7.582 G1Ib-IIHdel-1 300 0
3 NGC 129 OpC 00 30 00 +60 13.1   7.33 6.5     ~ 179 0
4 V* VY Cas LP* 00 51 26.0011824096 +62 55 14.874447782   10.94 9.62     M6/7III 53 0
5 NGC 663 OpC 01 46 09 +61 14.1   7.78 7.1     ~ 236 0
6 V* BY Cas cC* 01 47 11.9193204766 +61 25 20.952299938   11.5 10.369     F5 113 0
7 V* VX Per cC* 02 07 48.4806035107 +58 26 36.740590982   10.47 9.37   7.927 G2IV 170 0
8 Ass Per OB 1 As* 02 21 +57.6           ~ 162 1
9 NGC 884 OpC 02 22 23 +57 07.5           ~ 448 0
10 V* V440 Per cC* 02 23 51.7443033534 +55 21 53.502365644 7.76 7.120 6.291     F8Ib-II 170 0
11 V* SZ Cas cC* 02 27 13.7670524473 +59 27 38.174718163   11.5 9.60     G5III 155 0
12 V* VY Per cC* 02 27 35.4624890063 +58 55 01.756435189   12.48 11.32   9.246 F7.5Ib 92 0
13 V* UY Per cC* 02 34 31.3000705518 +58 49 53.839204521   12.46 11.18   9.431 F7 108 0
14 C 0232+587 OpC 02 36 06 +59 01.5   11.42 10.5     ~ 32 0
15 HD 16893 * 02 45 59.5043548015 +67 48 31.080236441   8.88 8.55     A2 6 0
16 HD 17327 ** 02 49 58.13254 +64 37 50.8803 7.7 7.794 7.503     B8II-III 25 0
17 HD 17327B *i* 02 49 58.2843504755 +64 37 45.680735780   10.72 10.29     ~ 3 1
18 HD 17443 *iN 02 51 32.7701457866 +67 48 54.158169711   9.04 8.75     B9V 36 2
19 V* SU Cas cC* 02 51 58.7508894403 +68 53 18.601570075 6.92 6.44 5.80     F5.5III+ 409 1
20 HD 17706 ** 02 53 40.4830574015 +64 27 07.210030499   6.312 6.408 7.60   B5IV 29 0
21 V* BE Cam LP* 03 49 31.2774211916 +65 31 33.556745782 8.49 6.36 4.48 2.77 1.35 M2II 104 0
22 V* SZ Tau cC* 04 37 14.7778803229 +18 32 34.929341041 7.65 7.13 6.37     F6.7:Ib 287 0
23 NGC 1647 OpC 04 45 55 +19 06.9   6.82 6.4     ~ 141 0
24 V* T Mon cC* 06 25 12.9997562821 +07 05 08.561189768 8.24 7.20 5.98   4.996 G3Iabv+A0p 447 1
25 NAME Rosette OB Association As* 06 31.7 +04 58           ~ 137 0
26 V* CV Mon cC* 06 37 04.8448658715 +03 03 50.276498200   11.32 9.90   8.631 ~ 215 0
27 V* AC Mon cC* 07 00 59.8200989695 -08 42 32.367780933   11.37 10.29     F5 74 0
28 NGC 2323 OpC 07 02 47.5 -08 20 16           ~ 157 0
29 Ass Pup OB 2 As* 07 57 -27.5           ~ 22 0
30 C 0802-461 OpC 08 02 49.00 -46 23 00.0           ~ 30 0
31 V* AH Vel cC* 08 11 59.9670207132 -46 38 39.656138625   6.35 5.76     F7Ib/II 162 0
32 V* RS Pup cC* 08 13 04.2157137938 -34 34 42.691837063 8.89 8.00 6.70   5.453 F8Iab 319 0
33 Ass Pup OB 3 As* 08 18.1 -35 46           ~ 23 0
34 V* RZ Vel cC* 08 37 01.3029337589 -44 06 52.844429407   8.507 7.260     G1Ib 199 0
35 V* SW Vel cC* 08 43 38.6904013543 -47 24 11.196771088   9.58 8.32     F8/G0Ib 169 0
36 Ass Vel OB 1 As* 08 49.9 -45 00           ~ 94 0
37 V* CS Vel cC* 09 41 10.2609558071 -53 48 57.782655270   12.46 11.24   10.078 ~ 91 0
38 V* AQ Car cC* 10 21 22.9755883634 -61 04 26.734361226   9.73 8.84     F8/G0Ib 98 0
39 V* U Car cC* 10 57 48.1866898409 -59 43 55.880151632 8.31 7.21 6.11   5.073 G5/8Iab 212 0
40 Ass Car OB 2 As* 11 08 -60.2           ~ 76 0
41 V* V Cen cC* 14 32 33.0828020969 -56 53 15.774776152 8.44 7.84 6.93   5.798 F5Ib/II 242 0
42 NGC 5662 OpC 14 35 37 -56 37.1   6.18 5.5     ~ 97 0
43 Cl Lynga 6 OpC 16 04 52 -51 56.0   10.28 9.5     ~ 71 0
44 V* TW Nor cC* 16 04 55.2266686530 -51 57 12.652767620   13.67 11.17     ~ 141 0
45 V* QZ Nor cC* 16 11 20.4661902809 -54 21 14.826048900 10.08 9.53 8.71 8.66   G1Iab 116 0
46 NGC 6067 OpC 16 13 11 -54 13.1           ~ 173 0
47 V* V340 Nor cC* 16 13 17.3998357878 -54 14 05.588347830   9.61 8.47 8.83   G2Iab 134 0
48 V* GU Nor cC* 16 14 54.7527637745 -53 20 18.342856523   11.60 10.08   8.802 ~ 80 0
49 NGC 6087 OpC 16 18 50 -57 56.1   5.85 5.4     ~ 151 0
50 V* S Nor cC* 16 18 51.8313333962 -57 53 59.253617873 8.15 7.49 6.49   5.427 F8/G0Ib 341 1
51 V* KQ Sco cC* 16 51 38.5473466715 -45 25 36.105341336 12.37 10.69 9.31     K7 117 0
52 NGC 6449 G 17 43 46.355 +56 48 14.81   14.6       ~ 14 0
53 C 1814-191 OpC 18 14.3 -19 06           ~ 3 1
54 V* WZ Sgr cC* 18 16 59.7158915244 -19 04 32.989119557   9.10 7.45     F7(III) 230 0
55 IC 4725 OpC 18 31 47 -19 07.0           ~ 192 0
56 V* U Sgr cC* 18 31 53.3321808602 -19 07 30.262730218 8.50 7.81 6.68   5.413 G1Ib 433 0
57 V* V367 Sct cC* 18 33 35.2353194475 -10 25 38.130057884   13.34 11.580     ~ 152 0
58 NGC 6664 OpC 18 36 37 -07 48.8   8.81 7.8     ~ 102 0
59 V* EV Sct cC* 18 36 39.6017832876 -08 11 05.360422056   10.99 9.90     G0II 229 0
60 V* RU Sct cC* 18 41 56.3817508914 -04 06 38.375080426   10.17 8.82     G5 183 0
61 Cl Trumpler 35 OpC 18 42 54 -04 08.0   10.44 9.2     ~ 64 0
62 V* BB Sgr cC* 18 50 59.8730479535 -20 17 42.828317888 8.07 7.53 6.69   5.824 G0Ib 234 0
63 C 1850-204 OpC 18 52 16 -20 12.2     6.3     ~ 57 0
64 V* GY Sge LP* 19 35 13.6267912014 +19 12 08.666171766 13.62 11.84 9.84     ~ 103 0
65 Ass Vul OB 1 As* 19 44.0 +24 13           ~ 89 0
66 Ass Vul OB 2 As* 19 47.6 +28 49           ~ 27 0
67 V* S Vul RV* 19 48 23.8064092484 +27 17 11.426469538   10.99 8.69     K0 176 0
68 V* SV Vul cC* 19 51 30.9059608126 +27 27 36.835645654 8.65 7.86 6.74   5.703 F8Ia 399 0
69 V* V1726 Cyg cC* 21 29 38.9420420958 +48 58 08.704046445   9.76 8.91     F5 65 1
70 Cl Platais 1 OpC 21 30 02 +48 58.6           ~ 23 2
71 V* IR Cep cC* 21 57 51.9255446770 +61 01 07.903989255   8.68 7.86     G0 84 1
72 Ass Cas OB 2 As* 23 20 +60.9           ~ 64 0
73 V* CE Cas B cC* 23 58 09.1060126033 +61 12 49.080293324   12.27 11.20     F8Ib 33 0
74 V* CE Cas A cC* 23 58 09.4462986260 +61 12 49.332003456   12.15 10.95     F9Ib 38 0
75 V* CF Cas cC* 23 58 17.9757306390 +61 13 15.821709555   12.72 10.80   9.700 F8Ibv 218 0
76 NGC 7790 OpC 23 58 24 +61 12.5   9.18 8.5     ~ 245 0
77 Ass Vel OB 5 As* ~ ~           ~ 8 0

    Equat.    Gal    SGal    Ecl

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2020.10.31-18:21:18

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