2018AJ....155...91Y


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.21CEST15:37:02

2018AJ....155...91Y - Astron. J., 155, 91-91 (2018/February-0)

Searching for Be stars in the open clusters with PTF/iPTF. I. Cluster sample and Be star candidates.

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

Abstract (from CDS):

We conducted a search for Be star candidates in open clusters using Hα imaging photometry of the Palomar Transient Factory Survey to investigate some connections among Be star phenomena, cluster environments, and ages. Stellar members of clusters were identified by spatial distributions, near-infrared magnitudes and colors, and by proper motions. Among 104 open clusters, we identified 96 Be star candidates in 32 clusters; 11 of our candidates have been reported in previous studies. We found that the clusters with age 7.5 < log(t(year)) 8.5 tend to have more Be star candidates; there is about a 40% occurrence rate within this age bin. The clusters in this age bin also tend to have a higher Be fraction N(Be)/N(Be+B-type). These results suggest that the environments of young and intermediate clusters are favorable to the formation of Be phenomena. Spatial distribution of Be star candidates with different ages implies that they do not form preferentially in the central regions. Furthermore, we showed that the mid-infrared (MIR) colors of the Be star candidates are similar to known Be stars, which could be caused by free-free emission or bound-free emission. Some Be star candidates might have no circumstellar dust according to their MIR colors. Finally, among 96 Be candidates, we discovered that one Be star candidate FSR 0904-1 exhibits long-term variability on the timescale of ∼2000 days with an amplitude of 0.2-0.3 mag, indicating a long timescale of disk evolution.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): open clusters and associations: general - stars: emission-line, Be - stars: general - surveys

VizieR on-line data: <Available at CDS (J/AJ/155/91): table1.dat table2.dat table3.dat>

Status at CDS : Examining the need for a new acronym. // All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 133

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Number of rows : 133

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 Cl Mayer 1 OpC 00 21 54.00 +61 45 32.0           ~ 23 2
2 Cl Stock 20 OpC 00 25 14.3 +62 37 49           ~ 18 0
3 Cl Stock 21 OpC 00 30 24.4 +57 55 37           ~ 18 0
4 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9557 1
5 NGC 381 OpC 01 08 19.9 +61 35 02     9.3     ~ 51 0
6 C 0109+620 OpC 01 12 09 +62 15.5           ~ 9 0
7 [KPR2005] 6 OpC 01 47 13 +57 43.8           ~ 21 0
8 TYC 3688-1659-1 * 01 58 11.7373634857 +55 42 18.688552840   11.73 11.29     ~ 1 0
9 NGC 744 OpC 01 58.6 +55 28   8.38 7.9     ~ 57 0
10 NGC 743 OpC 01 58 37 +60 09.4           ~ 12 0
11 [KPR2005] 7 OpC 01 58 55 +58 58.2           ~ 15 0
12 TYC 3688-1741-1 * 01 59 29.5086182170 +55 26 23.433583493   11.45 11.53     ~ 1 0
13 EM* GGA 134 Em* 02 00 10.0468141067 +60 10 53.529026621   12.01 11.22     OB-e 9 0
14 C 0158+626 OpC 02 02.0 +62 52           ~ 17 0
15 C 0200+642 OpC 02 04 30 +64 26.0           ~ 24 0
16 NGC 869 OpC 02 19 00 +57 07.7           ~ 430 0
17 C 0215+580 OpC 02 19 28.0 +58 18 00   11.19 9.9     ~ 29 0
18 EM* VES 734 Em* 02 20 03.7936187353 +63 37 24.630040092   14.30 13.51     ~ 6 0
19 EM* GGA 157 Em* 02 20 20.3439720939 +58 19 32.504268738   12.45 11.97     B 5 0
20 NGC 884 OpC 02 22 23 +57 07.5           ~ 448 0
21 NGC 886 OpC 02 23.5 +63 46           ~ 11 1
22 C 0229+585 OpC 02 33 01 +58 46.1   10.89 9.7     ~ 29 0
23 NGC 957 OpC 02 33 21 +57 33.6   8.34 7.6     ~ 86 0
24 C 0235+547 OpC 02 39.2 +54 56           ~ 14 0
25 Ass Cas OB 6 As* 02 43 +61.3           ~ 118 0
26 C 0257+602 OpC 02 59 23.00 +60 34 00.0     6.8     ~ 5 0
27 SAI 24 OpC 02 59 25.4 +60 33 58           ~ 11 0
28 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5758 1
29 NGC 1220 OpC 03 11 41 +53 20.8     11.8     ~ 17 0
30 C 0311+525 OpC 03 14 46 +52 41.8           ~ 51 0
31 Cl Czernik 15 OpC 03 23.2 +52 15           ~ 11 0
32 NAME Per Arm PoG 03 30 +45.0           ~ 1276 0
33 NGC 1348 OpC 03 33 51.7 +51 26 09           ~ 18 0
34 C 0343+589 OpC 03 47 48 +59 03.0   9.01 8.4     ~ 30 0
35 [KPS2012] MWSC 0337 C?* 04 06 11 +51 54.6           ~ 5 0
36 NGC 1502 OpC 04 07 50 +62 19.9   7.47 6.9     ~ 169 1
37 Cl* NGC 1513 RH 27 * 04 09 43.4419475445 +49 28 42.596744236   15.56 14.46     ~ 3 0
38 Cl* NGC 1513 RH 45 * 04 10 08.2254533283 +49 26 54.702394342   13.74 12.98     ~ 4 0
39 Cl* NGC 1513 RH 47 * 04 10 17.5360233882 +49 27 50.153653017   13.84 13.25     ~ 4 0
40 NGC 1513 OpC 04 10.6 +49 31   8.71 8.4     ~ 42 0
41 Cl Berkeley 11 OpC 04 20 28 +44 54.9   11.14 10.4     ~ 29 0
42 [KPS2012] MWSC 0384 OpC 04 29 53 +38 30.0           ~ 7 0
43 Cl Berkeley 67 OpC 04 37 48 +50 46.5           ~ 15 0
44 [FSR2007] 0714 Cl* 04 42 46.0 +41 55 19           ~ 6 0
45 Cl Berkeley 68 OpC 04 44 28 +42 06.0   10.62 9.8     ~ 15 0
46 [FSR2007] 0717 OpC 04 46 06.0 +42 08 03           ~ 8 0
47 NGC 1664 OpC 04 51 06 +43 40.5   8.02 7.6     ~ 101 0
48 TYC 2906-590-1 * 04 52 08.0604135893 +43 42 07.395267519   12.22 11.81     ~ 1 0
49 NGC 1778 OpC 05 08 04 +37 01.4   8.20 7.7     ~ 73 0
50 LBN 784 HII 05 13 25.5 +37 27 01           ~ 73 0
51 C 0516+394 OpC 05 20 28 +39 32.4           ~ 20 0
52 Cl Berkeley 17 OpC 05 20 37 +30 35.4           ~ 135 0
53 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14989 1
54 [KPS2012] MWSC 0526 OpC 05 23 56 +42 19.4           ~ 10 0
55 [FSR2007] 0777 OpC 05 27 31.0 +34 44 01           ~ 13 0
56 NGC 1907 OpC 05 28 05 +35 19.5   8.87 8.2     ~ 104 2
57 C 0524+343 OpC 05 28 07.5 +34 25 42           ~ 58 0
58 M 38 OpC 05 28 43 +35 51.3   6.69 6.4     ~ 128 2
59 [KPS2012] MWSC 0559 C?* 05 29 07 +44 46.2           ~ 5 0
60 [KPS2012] MWSC 0566 C?* 05 32 07 +41 37.1           ~ 5 0
61 M 36 OpC 05 36 18 +34 08.4   6.09 6.0     ~ 158 2
62 [FSR2007] 0814 OpC 05 36 50.6 +31 12 39           ~ 17 0
63 * zet Tau Be* 05 37 38.6854231 +21 08 33.158804 2.22 2.84 3.03 3.06 3.15 B1IVe_shell 698 0
64 [KPS2012] MWSC 0620 OpC 05 39 20 +31 31.0           ~ 7 0
65 [KGZ2008] 27 OpC 05 39 29.3 +33 20 46           ~ 11 0
66 [KPS2012] MWSC 0645 C?* 05 42 16 +33 39.6           ~ 5 0
67 [FSR2007] 0826 OpC 05 42 52.0 +28 56 29           ~ 11 0
68 [KPS2012] MWSC 0662 OpC 05 45 07 +24 44.3           ~ 9 0
69 [FSR2007] 0795 OpC 05 47 28.6 +35 25 56           ~ 11 0
70 Cl Czernik 23 OpC 05 50 06 +28 54.0           ~ 19 0
71 [FSR2007] 0852 OpC 05 53 35.0 +25 10 52           ~ 9 0
72 [FSR2007] 0802 OpC 06 00 56.2 +35 16 36           ~ 16 0
73 NGC 2129 OpC 06 01 07 +23 19.3   7.31 6.7     ~ 96 0
74 IC 2157 OpC 06 04 50 +24 04.2   8.91 8.4     ~ 34 0
75 [KPS2012] MWSC 0726 OpC 06 05 24 +30 47.6           ~ 6 0
76 [FSR2007] 0942 OpC 06 05 58.0 +13 40 06           ~ 16 0
77 [FSR2007] 0904 OpC 06 07 00.0 +19 00 43           ~ 11 0
78 [FSR2007] 0858 OpC 06 09 09.0 +25 40 38           ~ 6 0
79 NGC 2175 OpC 06 09 39 +20 29.2   7.0 6.8     ~ 248 3
80 [FSR2007] 0952 OpC 06 10 15.0 +13 00 47           ~ 6 0
81 C 0607+206 OpC 06 10 55 +20 36.9           ~ 12 0
82 [FSR2007] 0939 OpC 06 10 57.0 +14 22 57           ~ 7 0
83 [KPS2012] MWSC 0785 OpC 06 11 22 +11 52.3           ~ 6 0
84 [FSR2007] 0956 OpC 06 12 25.0 +13 00 26           ~ 7 0
85 Kronberger 12 OpC 06 14 15.5 +22 29 52           ~ 5 1
86 [FSR2007] 0940 Cl* 06 14 16.0 +14 48 18           ~ 5 0
87 [BDS2003] 82 OpC 06 14 57 +12 21.0           ~ 4 0
88 [FSR2007] 0891 Cl* 06 17 29.0 +22 25 38           ~ 6 0
89 [FSR2007] 0902 OpC 06 18 19.0 +20 31 42           ~ 7 0
90 [FSR2007] 0953 OpC 06 19 02.0 +14 08 53           ~ 11 0
91 NAME Skiff J0619+18.5 OpC 06 19 22 +18 30.6           ~ 8 0
92 [FSR2007] 0951 OpC 06 22 19.0 +14 42 44           ~ 8 0
93 C 0620+046 OpC 06 23 06.4 +04 40 55           ~ 7 0
94 [FSR2007] 0955 OpC 06 23 52.0 +14 30 26           ~ 5 0
95 GSC 00744-00849 * 06 24 01.2870912809 +14 29 43.180659838   12.3       A2 2 0
96 [KPS2012] MWSC 0873 OpC 06 28 21 +02 56.1           ~ 4 0
97 Juchert 18 OpC 06 31 27.6 +06 48 12           ~ 8 1
98 NAME Rosette Nebula HII 06 31 40 +04 57.8           ~ 449 1
99 NGC 2244 OpC 06 31 55 +04 56.5   5.26 4.8     ~ 566 4
100 [FSR2007] 0974 OpC 06 32 38.0 +12 33 19           ~ 10 0
101 [KPS2012] MWSC 0904 OpC 06 33 42 +22 17.3           ~ 7 0
102 C 0631+081 OpC 06 34 12 +08 05.0           ~ 24 0
103 HD 260301 * 06 35 38.3126184807 +08 04 13.342911502     11.5     A2/3 4 0
104 C 0635+047 OpC 06 37 42 +04 44.0   5.54 5.1     ~ 25 0
105 C 0635+020 OpC 06 38 35 +02 02.4     10.5     ~ 45 1
106 Cl* Collinder 110 DI 1301 * 06 38 38.2759992532 +02 13 36.854737912     14.43     ~ 2 0
107 Cl* Collinder 110 DI 1231 * 06 38 49.7908228971 +02 08 48.802429728     14.48     ~ 2 0
108 Cl* Collinder 110 DI 2245 * 06 38 55.3654729822 +01 57 02.145285087     14.50     ~ 2 0
109 NGC 2269 OpC 06 43 14 +04 36.9   10.42 10.0     ~ 26 0
110 Cl Alessi 16 OpC 06 43 35.0 +02 10 24           ~ 6 0
111 [KPS2012] MWSC 0997 OpC 06 50 30 +06 36.0           ~ 6 0
112 [KPS2012] MWSC 1012 OpC 06 54 04 +06 43.5           ~ 5 0
113 [KPS2012] MWSC 1022 OpC 06 55 16 +29 43.8           ~ 9 0
114 * bet CMi Be* 07 27 09.0417373 +08 17 21.536745 2.52 2.80 2.89 2.90 2.96 B8Ve 361 0
115 [KPS2012] MWSC 1407 OpC 08 00 20 +01 15.6           ~ 4 0
116 NGC 6811 OpC 19 37 17 +46 23.3   7.47 6.8     ~ 260 0
117 NGC 6866 OpC 20 03 55 +44 09.5   8.04 7.6     ~ 127 0
118 C 2006+364 OpC 20 09 42 +36 29.9           ~ 7 0
119 NGC 6910 OpC 20 23 08 +40 46.5   7.13 7.4     ~ 166 0
120 [KPS2012] MWSC 3342 OpC 20 26 59 +38 58.3           ~ 7 0
121 Patchick 103 OpC 20 35 08.3 +53 18 00           ~ 6 0
122 [BDB2003] G085.24-00.60 OpC 20 56 13 +44 23.1           ~ 6 0
123 C 2101+443 OpC 21 03 04 +44 33.6     8.7     ~ 15 0
124 [KPS2012] MWSC 3457 OpC 21 03 30 +39 58.8           ~ 5 0
125 V* VY Cyg cC* 21 04 16.6365398971 +39 58 20.104204896 11.74 10.66 9.56   8.090 F5.5-G0.5Ib 122 0
126 NGC 7031 OpC 21 07 06 +50 52.5   10.01 9.1     ~ 45 1
127 [D75b] Em* 22-013 Em* 22 10 51.2112557104 +57 49 33.761399652   12.81 12.13     ~ 3 0
128 [KPS2012] MWSC 3594 OpC 22 11 10 +57 39.6           ~ 7 0
129 EM* GGR 51 Em* 22 12 13.5565919747 +57 39 37.290810599   13.06 12.37 12.07   ~ 4 0
130 [KPS2012] MWSC 3644 OpC 22 36 14 +64 08.0           ~ 7 0
131 EM* GGR 141 Em* 23 24 21.8499107094 +61 29 21.154308995   12.25 11.81 12.11   ~ 7 0
132 EM* GGR 143 Em* 23 24 46.3655249981 +61 26 15.413932207   12.28 11.72 11.65   B9 8 0
133 M 52 OpC 23 24 48 +61 35.6           ~ 170 0

    Equat.    Gal    SGal    Ecl

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2020.10.21-15:37:03

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