2015AJ....149...43Y


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.11CET03:41:44

2015AJ....149...43Y - Astron. J., 149, 43 (2015/February-0)

Searching for Be stars in the open cluster NGC 663.

YU P.C., LIN C.C., CHEN W.P., LEE C.D., IP W.H., NGEOW C.C., LAHER R., SURACE J. and KULKARNI S.R.

Abstract (from CDS):

We present Be star candidates in the open cluster NGC 663, identified by Hα imaging photometry with the Palomar Transient Factory Survey, as a pilot program to investigate how the Be star phenomena, the emission spectra, extended circumstellar envelopes, and fast rotation, correlate with massive stellar evolution. Stellar membership of the candidates was verified by 2MASS magnitudes and colors and by proper motions (PMs). We discover four new Be stars and exclude one known Be star from being a member due to its inconsistent PMs. The fraction of Be stars to member stars [N(Be)/N(members)] in NGC 663 is 3.5%. The spectral type of the 34 Be stars in NGC 663 shows bimodal peaks at B0-B2 and B5-B7, which is consistent with the statistics in most star clusters. Additionally, we also discover 23 emission-line stars of different types, including non-member Be stars, dwarfs, and giants.

Abstract Copyright:

Journal keyword(s): galaxies: star clusters: individual: NGC 663 - stars: emission-line, Be

CDS comments: PKK 1 - 4 = 2MASS J01451168+6110229, 2MASS J01454789+6116239, 2MASS J01462440+6110372 and 2MASS J01471752+6113176 respectively.

Simbad objects: 37

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Number of rows : 37

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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9134 1
2 Ass Cas OB 8 As* 01 44 +61.1           ~ 42 0
3 2MASS J01451168+6110229 Be* 01 45 11.6808023171 +61 10 22.951451039           ~ 5 0
4 BD+60 325 Be* 01 45 18.0278519925 +61 06 56.476451093   10.47 10.083 9.90   B1Ve 32 0
5 EM* GGA 90 Be* 01 45 18.3559769009 +60 58 09.062762582 11.59 11.78 11.24 11.42   B 10 1
6 EM* GGA 93 Be* 01 45 37.8223678813 +61 07 59.086208238   12.79 12.135 12.31   B2Ve 20 0
7 EM* GGA 94 Be* 01 45 39.6178050308 +61 12 59.119173369   13.16 12.451 12.09   B2Ve 26 0
8 EM* GGA 95 Be* 01 45 46.3957674926 +61 09 20.902360532   12.52 11.937 11.77   B1Ve 22 0
9 NGC 663 128 * 01 45 47.8888584733 +61 16 23.942374748   14.32 13.54     ~ 10 0
10 EM* GGA 97 Be* 01 45 56.1025596480 +61 12 45.283345560   12.05 12.008 11.58   B2Ve 29 0
11 BD+60 332A Be* 01 45 59.3114792109 +61 12 45.625308082   11.20 10.51 10.35   B0/1Ve 27 0
12 NGC 663 84 Be* 01 46 02.0814512172 +61 15 02.098549010   14.74 13.96 13.92   B5Ve 18 0
13 EM* VES 616 Be* 01 46 06.1340477029 +61 13 39.202321440   12.06 11.509 11.35   B0-1Ve 24 0
14 NGC 663 OpC 01 46 09 +61 14.1   7.78 7.1     ~ 233 0
15 NGC 663 51 Be* 01 46 14.0270951639 +61 13 43.831031464   13.88   12.85   B5Ve 18 0
16 EM* GGA 98 Be* 01 46 20.2313566144 +61 14 21.613473375   12.71 11.985 11.44   B2Ve 29 0
17 NGC 663 61 Be* 01 46 24.4144941870 +61 10 37.279463177   14.24 13.52     B5-7Ve 16 0
18 BD+60 341 Be* 01 46 26.8454645313 +61 07 41.712850771   11.30 10.665 10.20   B0-1Ve 38 0
19 EM* GGA 99 Be* 01 46 26.9123128869 +61 14 11.175935757       12.19   B(e) 25 0
20 BD+60 340 Be* 01 46 27.0631826026 +61 10 01.914164982   10.59 10.12     B5III 33 0
21 NGC 663 21 Be* 01 46 27.6718089529 +61 12 25.438892856   11.24 10.538 10.34   Be 25 0
22 NGC 663 14 Be* 01 46 28.6233740417 +61 13 50.420242120   13.32 12.67     B3Ve 15 0
23 NGC 663 6 Be* 01 46 30.6368440938 +61 14 29.226186428   12.89 12.085 11.66   B1Ve 30 0
24 NGC 663 180 Be* 01 46 34.8662300424 +61 06 27.726975235     13.295     B5Ve 11 0
25 BD+60 343B Be* 01 46 35.5367288494 +61 15 47.823750982   10.90 10.286 9.85   B2Ve 24 0
26 EM* GGA 101 Be* 01 46 35.6085406531 +61 13 39.083258962   12.34 12.311     B1Ve 27 0
27 EM* GGA 103 Be* 01 46 57.5700109883 +61 01 40.444823966   12.08 11.525     B(e) 15 0
28 EM* VES 624 Be* 01 46 59.6008875363 +61 12 29.526385446   14.11 13.44     B5Ve 19 1
29 EM* GGA 104 HXB 01 47 00.2121223849 +61 21 23.661992704 11.76 12.09 11.366 11.00 10.52 B1IIIe 167 0
30 NGC 663 124 Be* 01 47 03.7496491223 +61 17 32.047242989     12.281 12.07   B2Ve 20 0
31 NGC 663 151 Be* 01 47 17.5279026241 +61 13 17.620187914           B5-7Ve 6 0
32 EM* GGA 108 Be* 01 47 26.7677299048 +61 08 44.132730533   12.11 11.53     B0-1Ve 27 0
33 EM* GGA 109 Be* 01 47 39.3756129417 +61 18 20.556729980   13.12 12.383     B1Ve 19 0
34 EM* GGA 110 Be* 01 48 23.0655725809 +61 15 53.049580244 11.12 11.3 10.867     B2Ve 19 0
35 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14380 1
36 NGC 2345 OpC 07 08 18 -13 11.6   8.58 7.7     ~ 50 0
37 NGC 7419 OpC 22 54 20 +60 48.9     13.0     ~ 81 0

    Equat.    Gal    SGal    Ecl

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2019.12.11-03:41:44

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