2016MNRAS.457.3724B

Query : 2016MNRAS.457.3724B

2016MNRAS.457.3724B - Mon. Not. R. Astron. Soc., 457, 3724-3731 (2016/April-3)

Rotational modulation in B stars observed by the Kepler K2 mission.

BALONA L.A.

Abstract (from CDS):

A recent analysis indicates that the number of rotational variables among B stars in the Kepler field is as high as among the A stars (about 40 per cent). We continue this investigation by studying the incidence of rotational modulation among B stars using the K2 data. These data include many early B stars which are lacking in the original Kepler field. The results indicate that rotational modulation is as common among B stars as it is among A stars. The K2 data show that 30-50 per cent of B stars (both early and late type) appear to be rotational variables, depending on which criteria are used. It appears that a large fraction of B stars have spots or other co-rotational feature, implying the possible presence of a magnetic field. Rotational modulation needs to be taken into account in any future interpretation of light and spectroscopic variations in B stars.

Abstract Copyright: © 2016 The Author Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: early type - stars: rotation - starspots

Simbad objects: 112

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Number of rows : 112
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 21836 * 03 31 43.7952426576 +18 48 00.468643428   8.27 8.17     A0 15 0
2 * 13 Tau Be* 03 42 18.9476782488 +19 42 00.918475956 5.41 5.68 5.69     B7Ve 107 0
3 HD 23410 PM* 03 45 48.8151076872 +23 08 49.727194548   6.925 6.909   6.78 A0Va 100 0
4 HD 23568 ** 03 46 59.3943532032 +24 31 12.448365564   6.83 6.82   6.76 B9.5V 165 0
5 HD 23763 * 03 48 30.0969016008 +24 20 43.894342464   7.08 6.96   6.79 A2V 136 0
6 HD 23964A SB* 03 49 58.0556899152 +23 50 55.288075236   6.82 6.81 6.3 6.74 B9.5VspSiSrCr 167 0
7 HD 24262 * 03 52 18.6590424624 +18 55 03.386679924   8.42 8.26     A0 15 0
8 HD 24278 ** 03 52 23.0860798416 +18 35 51.808853832 8.300 8.150 7.940     A0 18 0
9 HD 24277 * 03 52 43.2302986488 +25 38 33.285721344   9.50 9.26     A0 10 0
10 HD 285338 * 03 59 07.0941367944 +15 20 37.425303312   10.25 9.99     A0 8 0
11 HD 25201B * 04 00 57.2549724960 +23 12 00.883782792   7.907 7.734 8.40   B8/A0V 18 0
12 HD 284130 * 04 05 57.0689556240 +23 14 30.337430748   10.47 10.35     A0 8 0
13 HD 284170 * 04 09 01.8292914912 +23 16 52.570324776   10.51 10.19     A0 6 0
14 HD 284191 * 04 11 16.5773732736 +22 14 55.058869212   10.70 10.10     A0 9 0
15 HD 283517 Pe* 04 11 16.8185068812 +24 00 18.271616773   10.63 10.22     A5IV-V 10 0
16 HD 284224 * 04 14 40.8162386400 +23 42 11.213865108   11.72 11.86     A0 7 0
17 NGC 2129 108 * 06 01 11.7761975612 +23 23 43.742704342     12.766     B5 8 0
18 TYC 1864-262-1 V* 06 01 33.4738276200 +23 33 43.271836272   11.89 11.55 11.33   B8 5 0
19 [M67b] +22 335 V* 06 02 31.3717946328 +22 38 15.191905092   11.63 11.39 11.48   B8 5 0
20 TYC 1864-1494-1 Pe* 06 02 41.1116756952 +23 10 13.231597872   11.97 11.38 11.39   B8IV-VSi 8 0
21 NSV 2799 V* 06 03 13.9185379176 +22 20 09.163994604   11.71 11.66 11.27   B8 5 0
22 TYC 1325-676-1 V* 06 04 01.2278598720 +22 13 41.498288616   12.03 12.10 11.89   B8 5 0
23 HD 251073 ** 06 04 34.008216 +22 07 43.71204   11.28 10.97 10.88   A0 6 0
24 HD 251149 V* 06 04 55.1857672680 +23 43 46.596741564   10.468 10.243 10.311   A0pSi 6 0
25 IC 2157 21 V* 06 04 56.5699069224 +24 04 20.771248296   11.93 11.97 12.04   B5 12 0
26 GSC 01325-01114 V* 06 05 08.0251352112 +22 06 23.722607844   13.10 12.6 12.77   B8 3 0
27 [M67b] +23 472 V* 06 05 27.2093964936 +23 52 35.536967508   13.270 12.807 12.826   B9 3 0
28 HD 251310 * 06 05 31.4227080648 +23 32 26.766286404   10.55 10.37     B9 6 0
29 HD 251556 Pe* 06 06 21.7962119928 +21 24 35.737141392   10.18 10.17 10.33   B9IV-VSi 13 0
30 HD 251697 V* 06 06 51.3841370328 +22 04 52.556601072   10.79 10.55 10.72   B9 6 0
31 [M67b] +23 590 * 06 07 55.9807907040 +23 10 27.212006316   13.073 12.736 12.796   B9n 3 0
32 HD 41768 * 06 08 07.3202131416 +22 27 08.687505996   9.61 9.51     B9III 12 0
33 HD 41831 * 06 08 20.6246390400 +22 12 29.684012220   9.552 9.459 9.279   B3V 23 0
34 Cl* NGC 2175 H 98 V* 06 08 32.00 +20 39 24.0 14.43 14.58 13.7     O9.5V 10 0
35 NGC 2175 101 V* 06 08 38.0293034760 +20 28 01.145242164   12.83 12.29 12.31   ~ 7 0
36 HD 252203 * 06 08 49.3139645544 +23 32 01.438068696   10.57 10.60     B9 6 0
37 Cl* NGC 2175 H 136 V* 06 09 23.3042870133 +20 30 58.759543854   12.48 11.74 11.205   ~ 7 0
38 HD 252409 * 06 09 23.3471315376 +20 52 53.967019872   9.728 9.684 9.834   B8 15 0
39 TYC 1877-337-1 V* 06 09 27.4095369120 +22 48 52.789841676   11.99 11.98 11.88   B8 5 0
40 HD 252428 Pe* 06 09 37.7283784684 +23 52 18.028037300   10.21 10.11     B8III-IVHgMn 17 0
41 Cl* NGC 2175 H 139 V* 06 09 38.3858187696 +20 39 20.785720752   11.96 11.48 11.47   ~ 11 0
42 [M67b] +23 696 * 06 09 38.4074523360 +23 30 16.960055616   13.127 12.859 12.919   B9: 2 0
43 HD 252535 Y*? 06 09 50.1358526856 +20 37 05.262347460 9.54 10.26 10.26 10.16   B0.5V 29 1
44 NGC 2175 45 V* 06 09 51.6937925976 +20 33 58.111722216   11.06 10.57 10.55   ~ 6 0
45 TYC 1877-264-1 V* 06 09 51.8626948368 +23 37 44.760689256   12.51 12.01 12.09   B5 6 0
46 HD 252532 * 06 09 54.9944778840 +22 30 01.319488992   11.52 11.68     B5 7 0
47 ZTF J061011.42+231034.4 RS* 06 10 11.4327189840 +23 10 34.324600620   13.33 12.8     B8 5 0
48 HD 252588 V* 06 10 11.9606115552 +22 55 03.631568304   11.32 11.11 11.27   B9 7 0
49 UCAC4 569-024830 Pu* 06 10 19.3604461272 +23 46 10.195513896   13.02 12.666 12.674   B8 4 0
50 HD 252812A V* 06 10 52.8487639656 +20 36 33.649753896 10.35 10.79 10.47 10.296   B3V 17 0
51 TYC 1877-989-1 * 06 10 53.6157518568 +22 35 56.989988736   11.97 12.06     B8 4 0
52 NGC 2175 5 V* 06 10 54.5105499024 +20 35 45.193182000   13.731 13.257 13.183   ~ 11 0
53 NGC 2175 40 * 06 10 55.8984540672 +20 34 08.037587172   13.417 12.872 12.816   ~ 3 0
54 NGC 2175 4 V* 06 10 56.0446282704 +20 36 32.274493452   11.32 10.95 10.82   B0.5V 8 0
55 GSC 01326-00536 Pe* 06 11 01.9038586608 +22 18 50.938315380   13.06 12.7     kA0hA8mA9 5 0
56 TYC 1877-1620-1 V* 06 11 08.0854328136 +23 31 23.493777456   12.50 12.45 12.29   B5 6 0
57 Cl* NGC 2175 H 164 V* 06 11 16.0805305536 +20 26 50.276193432   12.23 11.70 11.91   ~ 8 0
58 Cl* NGC 2175 H 166 V* 06 11 20.3187722465 +20 37 46.036227508   12.27 12.01 12.61   ~ 11 0
59 Cl* NGC 2175 H 168 V* 06 11 22.9458093648 +20 39 21.157603992   12.09 11.32 12.03   ~ 7 0
60 [M67b] +25 844 Pe* 06 11 37.1011699296 +25 43 07.869835416   12.19 11.93 11.92   B8IV-VHgMn 6 0
61 HD 253049 V* 06 11 42.9182654136 +20 07 36.475040640 9.14 9.854 9.711 9.626   B2IV 31 0
62 HD 252965 * 06 11 45.1383195696 +26 15 23.037617232   10.23 10.01     B9 5 0
63 HD 252991 V* 06 11 52.7142208080 +25 59 00.811870692   10.66 10.44 10.47   B0.3V 13 0
64 [M67b] +25 866 * 06 11 56.7826014336 +25 32 45.971053188   11.60 11.12     B9 5 0
65 [M67b] +26 385 * 06 11 57.0731688864 +26 05 39.576234264       12.35   A0: 3 0
66 HD 253214 Be* 06 12 16.5991274880 +20 05 09.771840996 9.18 9.72 9.54     B2Vnn 44 0
67 HD 253247 Y*O 06 12 22.1116038408 +18 00 57.857095872 9.54 10.23 9.92 10.00   O9.5V 48 0
68 HD 253327 Y*O 06 12 44.1784712232 +17 59 14.251982856 10.93 11.30 10.75 10.57   B0.5V 32 0
69 TYC 1881-190-1 V* 06 12 58.0681358760 +25 37 56.368394688   11.46 10.95 10.93   B8 5 0
70 BD+18 1126 Y*O 06 13 10.5741681720 +18 02 47.596106616   10.28 10.06 9.94   A1IV-V(Sr)Si 5 0
71 HD 42996 * 06 14 38.5951813968 +17 26 31.688529360   9.552 9.649 9.523   B8e 14 0
72 HD 253850 * 06 14 58.7425347192 +23 14 37.497170904   9.48 9.26     B8 8 0
73 HD 43040 V* 06 15 15.9149276088 +26 39 53.980087464   9.37 9.28 9.39   B8/9IV/V 8 0
74 HD 253983 V* 06 15 25.3978532496 +19 01 45.935731164   9.70 9.50 9.44   B1V 13 0
75 LS V +22 38 s*b 06 16 13.3274391960 +22 45 48.779291448 11.69 11.775 10.726 10.450   B0.2III: 29 1
76 RL 121 V* 06 16 19.3911863976 +25 37 15.693090636   15.616 15.295 15.391   B5Vn 5 0
77 HD 254205 EB* 06 16 19.8159654744 +20 54 45.852017436   10.27 10.18 10.22   B8III-IVSi 10 0
78 RL 122 * 06 18 25.7929757640 +25 40 28.842104496       15.314   B5V 4 0
79 HD 254999 V* 06 19 39.2255370984 +26 14 42.309291228   9.96 9.93 10.01   B5 6 0
80 HD 255055 Em* 06 19 41.6469037320 +23 17 20.229493524 8.94 9.61 9.40 9.421   O9.2IVe 38 0
81 HD 255137 Ae? 06 19 46.6057422120 +21 09 04.118769432 10.94 11.147 10.684 10.822   B2 15 0
82 HD 255595 V* 06 21 03.1968241800 +15 27 46.434744828   11.03 10.85 10.96   B9 6 0
83 HD 256083 * 06 22 35.9820304296 +14 25 09.343996140   10.63 10.24     B9 6 0
84 HD 256149 V* 06 22 52.9999095744 +14 30 37.965382308   9.59 9.40 9.52   B8 10 0
85 HD 256035 * 06 22 58.2414314040 +22 51 46.158064380 9.24 9.63 9.21     O9V:p 35 0
86 HD 44597 * 06 23 28.5386913264 +20 23 31.655646420 8.59 9.23 9.05     O9.2V 50 0
87 LF 8 +14 379 * 06 23 50.3037991056 +14 30 55.586184156   11.54 11.32     A0 4 0
88 TYC 744-261-1 V* 06 24 55.3073129136 +14 45 33.242865804   12.51 11.68 11.84   B8 5 0
89 LF 8 +14 407 * 06 24 55.9350884856 +14 19 50.978440236   11.50 11.36     B9 2 0
90 RL 128 V* 06 24 59.8664756880 +26 49 19.398522648 14.31 15.21 15.11 15.180   O4.5V((c))z 18 0
91 HD 256856 * 06 25 11.1098733792 +14 52 23.542474008   9.36 9.30 9.375   B3V 13 0
92 HD 256888 V* 06 25 15.5901599280 +14 27 19.626493104   11.23 10.99 11.07   B8 6 0
93 RL 62 V* 06 25 34.1355057168 +21 21 19.218749292   12.619 12.368 12.402   ~ 6 0
94 HD 257051 V* 06 25 52.8252759888 +15 37 24.416834520   9.72 9.55 9.61   B8V 8 0
95 HD 257473 Be* 06 27 36.1489859400 +18 15 47.723845716   9.60 9.57 9.63   B9e 18 0
96 HD 258313 * 06 30 26.7133496376 +27 25 53.030778636   9.39 9.39     B9 5 0
97 HD 259452 Pe* 06 33 55.9489945584 +26 39 43.741651896   9.48 9.39 9.51   A0IV-VSrSi 10 0
98 SS 49 Em* 06 34 44.5231328760 +19 49 10.436783736   11.79 11.72 11.44   B8e: 9 0
99 HD 259975 Pe* 06 35 16.4612202312 +21 57 15.018502212   9.50 9.51 9.65   B9IV-VSi 7 0
100 HD 260690 Pe* 06 37 35.3120704392 +21 04 43.754480400   10.50 10.68 10.77   B9III-IVHgMn 7 0
101 AG+16 659 * 06 40 07.7937454440 +16 18 39.117504420   10.79 10.59     ~ 3 0
102 HD 263060 * 06 44 59.0762101464 +16 55 57.700663212   9.53 9.57     B8 5 0
103 HD 263483 * 06 46 20.1841116696 +15 23 03.835276584   9.43 9.40     B9 11 0
104 HD 263660 ** 06 47 15.2530055616 +24 50 11.368705416   9.60 9.62     B9 10 0
105 * c02 Sco SB* 16 12 18.2046168820 -27 55 34.953285603 3.66 4.413 4.568     B2V 201 0
106 HD 146285 Ro* 16 16 25.1723345064 -24 59 19.464122400   8.12 7.92   7.47 B8V 94 0
107 HD 147648 Y*O 16 24 02.9029575912 -25 24 54.073102104 10.39 10.10 9.49 9.726 8.20 B8II 72 0
108 HD 148088 * 16 26 50.7825257448 -29 17 06.080619516   11.275 10.982 11.313   B8/9(III) 6 0
109 HD 148872 * 16 32 11.2734275040 -29 06 44.485058052   10.54 10.32     A0III/IV 10 0
110 HD 149563 * 16 36 41.5815230880 -28 59 00.665970216   10.52 10.29     B9/A0III 11 0
111 HD 151558 * 16 49 08.3315090976 -24 54 21.930437988   10.65 10.44     B9/A0III/IV 14 0
112 * alf Lyr dS* 18 36 56.33635 +38 47 01.2802 0.03 0.03 0.03 0.07 0.10 A0V 2787 1

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