2017A&A...599A..66S

Query : 2017A&A...599A..66S

2017A&A...599A..66S - Astronomy and Astrophysics, volume 599A, 66-66 (2017/3-1)

B fields in OB stars (BOB): Concluding the FORS 2 observing campaign.

SCHOLLER M., HUBRIG S., FOSSATI L., CARROLL T.A., BRIQUET M., OSKINOVA L.M., JARVINEN S., ILYIN I., CASTRO N., MOREL T., LANGER N., PRZYBILLA N., NIEVA M.-F., KHOLTYGIN A.F., SANA H., HERRERO A., BARBA R.H., DE KOTER A. (The BOB Collaboration)

Abstract (from CDS):

Aims. The B fields in OB stars (BOB) Collaboration is based on an ESO Large Programme to study the occurrence rate, properties, and ultimately the origin of magnetic fields in massive stars.
Methods. In the framework of this program, we carried out low-resolution spectropolarimetric observations of a large sample of massive stars using FORS 2 installed at the ESO VLT 8m telescope.
Results. We determined the magnetic field values with two completely independent reduction and analysis pipelines. Our in-depth study of the magnetic field measurements shows that differences between our two pipelines are usually well within 3σ errors. From the 32 observations of 28 OB stars, we were able to monitor the magnetic fields in CPD -57° 3509 and HD 164492C, confirm the magnetic field in HD 54879, and detect a magnetic field in CPD -62° 2124. We obtain a magnetic field detection rate of 6±3% for the full sample of 69 OB stars observed with FORS 2 within the BOB program. For the preselected objects with a v sin i below 60km/s, we obtain a magnetic field detection rate of 5±5%. We also discuss X-ray properties and multiplicity of the objects in our FORS 2 sample with respect to the magnetic field detections.

Abstract Copyright: © ESO, 2017

Journal keyword(s): polarization - stars: early-type - stars: magnetic field - stars: massive - stars: massive

Simbad objects: 62

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Number of rows : 62
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 V* V2052 Ori V* 05 34 49.6765640640 -08 38 06.724659876           ~ 3 0
2 HD 36982 Or* 05 35 09.8363878512 -05 27 53.216296776 8.00 8.58 8.46     B2V 208 0
3 * tet01 Ori A Ae* 05 35 15.8254015008 -05 23 14.334699480 5.87 6.75 6.73 6.42 6.21 B0V 485 1
4 V* V1046 Ori SB* 05 35 21.8667428568 -04 29 39.024375324 5.66 6.43 6.56 6.61 6.74 B2/3V 303 0
5 NAME Ori A MoC 05 38 -07.1           ~ 3008 0
6 HD 44597 * 06 23 28.5386913264 +20 23 31.655646420 8.59 9.23 9.05     O9V 41 0
7 HD 46056 Y*O 06 31 20.8608343776 +04 50 03.842554740 7.60 8.36 8.16 8.16 8.09 O8Vn 226 0
8 HD 46106 Y*O 06 31 38.3968383096 +05 01 36.396422796 7.33 8.08 7.93 7.76 7.66 O9.7III(n) 156 0
9 * ksi01 CMa bC* 06 31 51.3662820799 -23 25 06.319934859 3.10 4.09 4.33 4.45 4.72 B0.7IV 322 0
10 HD 46149 Y*O 06 31 52.5319291296 +05 01 59.178678024 7.03 7.80 7.61 7.54 7.36 O8.5V 277 0
11 HD 46150 Y*O 06 31 55.5205071744 +04 56 34.296516096 6.03 6.86 6.73 6.50 6.41 O5V((f))z 396 0
12 HD 46223 Y*O 06 32 09.3068103600 +04 49 24.705695568 6.73 7.50 7.28 6.95 6.79 O4V((f)) 381 0
13 HD 46202 bC* 06 32 10.4706981304 +04 57 59.764912343 7.60 8.332 8.269 7.98 7.86 O9.2V 285 0
14 HD 46966 ** 06 36 25.8880460976 +06 04 59.474397540 5.91 6.83 6.87     O8.5IV 207 0
15 HD 289002 * 06 45 13.3725491952 +02 08 14.685250596 10.06 10.62 10.44     B1 259 0
16 HD 54879 SB* 07 10 08.1487629504 -11 48 09.838940004 6.8 7.60 7.65     O9.7V 86 0
17 HD 56779 * 07 16 49.4082241536 -36 35 33.478464732 4.17 4.849 5.009     B3V 59 0
18 HD 60848 Be* 07 37 05.7325392528 +16 54 15.300327852 5.55 6.67 6.87     O8:V:pe 139 0
19 V* QU Pup bC* 07 51 40.3580164320 -42 53 17.533822092 4.98 5.847 6.032     B2III 58 0
20 HD 72648 * 08 32 18.9890145000 -43 55 53.360572260 7.15 7.75 7.62     B3III(II) 58 1
21 HD 72754 Be* 08 32 23.3805568848 -49 36 04.770238860 6.38 9.09 8.88 7.77   B2(Ia)pe(_sh) 110 0
22 HD 75759 SB* 08 50 21.0167636904 -42 05 23.247034188 4.95 5.90 6.00 7.18   O9V+B0V 139 0
23 CPD-57 3509 * 10 35 48.9972741480 -58 14 54.297364704 10.16 10.82 10.70 10.59 10.49 B2III 40 0
24 NGC 3324 19 * 10 37 21.8824094304 -58 37 10.026510672   11.92 11.72 11.89   ~ 8 0
25 HD 93027 Y*O 10 43 17.9451218184 -60 08 03.279537240 7.86 8.72 8.72 9.48   O9.5IV 81 0
26 CPD-59 2624 SB* 10 45 05.8358470968 -59 43 07.684616964 9.324 10.018 9.740   9.221 O9.7IV 59 0
27 HD 93521 * 10 48 23.5113981120 +37 34 13.083332412 5.67 6.79 7.03     O9.5IIInn 427 1
28 HD 95568 bC* 11 00 39.5891327592 -62 36 50.236157268   9.65 9.57 9.94   O9/B0V 25 0
29 HD 97991 * 11 16 11.7119307144 -03 28 19.095029580 6.28 7.19 7.41     B1V 140 0
30 CPD-62 2124 * 11 35 36.8614624296 -63 15 48.516783840 10.30 11.15 11.01 11.14   B2IIIHe 50 0
31 HD 101008 * 11 36 56.1752293128 -63 23 52.509820560 8.32 9.14 9.16 9.70   O9V 74 0
32 HD 110432 HXB 12 42 50.2663572384 -63 03 31.052981412 4.79 5.58 5.31     B0.5IVpe 310 0
33 HD 117357 bC* 13 31 15.4959291912 -61 43 57.436151880 8.51 9.84 9.58 9.61   O9.5/B0V 48 0
34 HD 118198 * 13 36 59.4939290040 -63 38 45.714273036 7.92 9.19 9.32 9.29   O9.7III 42 0
35 * mu. Cen Be* 13 49 36.9886872492 -42 28 25.440271450 2.37 3.27 3.43 3.41 3.50 B2Vnpe 434 0
36 HD 120991 Be* 13 53 57.2397645360 -47 07 41.390612184 5.11 6.03 6.10 6.24 6.34 B2Ve 139 0
37 * a Cen Ro* 14 23 02.2387240143 -39 30 42.544559700 3.50 4.24 4.42 4.53 4.70 B2V 274 0
38 * ome Sco bC* 16 06 48.4249866846 -20 40 09.079866331 3.10 3.92 3.97 3.91 3.99 B1V 470 0
39 HD 152218 Y*O 16 53 59.9905195488 -41 42 52.817214240 7.02 7.78 7.570   7.243 O9IV+B0:V: 150 0
40 HD 152246 SB* 16 54 05.2976157264 -41 04 46.117795944 6.69 7.45 7.29 8.19   O9IV 123 1
41 V* V1297 Sco SB* 16 56 05.2157203176 -40 20 57.576260184 7.87 9.11 9.29 9.29   O7.5Vz 138 0
42 HD 156134 * 17 17 20.9200302792 -35 32 55.200460668 8.26 8.70 8.05 8.84   B0Ib 64 1
43 HD 156233 * 17 18 26.1399852936 -42 55 54.682883004 8.93 9.49 9.18 9.59   B0 20 0
44 HD 156234 EB* 17 18 27.4002821424 -42 58 55.500809700 7.46 8.07 7.76 8.78   B0III 22 0
45 HD 156292 SB* 17 18 45.8116958160 -42 53 29.928425568 7.13 7.75 7.55 8.42   O9.7III 68 0
46 EM* LkHA 123 Em* 18 02 23.13015 -23 01 59.9462   8.72 6.80 9.37   B1V 47 0
47 HD 164492 Y*O 18 02 23.5527520992 -23 01 50.999556180 6.49 7.49 6.80 7.52   O7.5Vz 229 0
48 HD 164492B sg* 18 02 23.7095503200 -23 01 45.155769456   8.0 12.06     B2Vnn 22 0
49 HD 164536 SB* 18 02 38.6215585296 -24 15 19.374907140 6.46 7.37 7.40 8.26   O7.5V(n)z 63 0
50 HD 164704 Y*O 18 03 18.8460034224 -22 53 03.837323292 7.29 8.83 8.81 9.05   B2II 38 0
51 HD 164816 Be* 18 03 56.8425865728 -24 18 45.118050552 6.17 7.006 6.986 8.08 6.989 O9.5V+B0V 152 0
52 HD 164844 Y*? 18 04 02.9277541608 -22 33 57.437896572 7.49 8.93 8.89 9.20   B1/2III 44 0
53 HD 315032 Be* 18 04 15.0268429224 -24 23 27.713497344 9.170 9.164 9.122 9.71 9.039 B0IV 66 0
54 CD-22 12513 Y*O 18 04 16.9873434384 -22 30 33.293259540   9.798 9.743 10.017   B4 14 0
55 HD 165052 SB* 18 05 10.5506592816 -24 23 54.847798080 6.16 6.98 6.87 7.77   O6.5V((f))z 266 1
56 HD 166033 * 18 09 46.7453465328 -23 38 44.797782696 8.48 8.65 8.60 9.39 8.32 OB 33 0
57 IC 1274 HII 18 11 -23.8           ~ 8 0
58 NGC 6604 OpC 18 18 03 -12 14.5           ~ 139 0
59 BD-12 4982 * 18 18 09.8898372072 -12 10 47.167027392 9.51 9.93 9.26 9.66   OB 50 0
60 HD 168625 s*b 18 21 19.5484021368 -16 22 26.075142156 10.15 9.78 8.37 8.76   B8Ia+ 277 2
61 HD 226868 HXB 19 58 21.6757355952 +35 12 05.784512688 9.38 9.72 8.91 8.42   O9.7Iabpvar 4334 0
62 HD 345439 Be* 19 58 48.4896519480 +23 05 21.559730172   11.61 11.11 11.37   B1V-B2V 34 0

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