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

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

2017A&A...599A..66S - Astronomy and Astrophysics, volume 599A66-66 (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 - 2026 		#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 225 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 508 0
4 HD 37017 SB* 05 35 21.8667428568 -04 29 39.024375324 5.66 6.43 6.56 6.61 6.74 B2/3V 318 0
5 NAME Ori A MoC 05 38 -07.1           ~ 3187 0
6 HD 44597 * 06 23 28.5386913264 +20 23 31.655646420 8.59 9.23 9.05     O9.2V 50 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 242 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) 167 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 336 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 288 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 413 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)) 406 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 300 0
14 HD 46966 ** 06 36 25.8880460976 +06 04 59.474397540 5.91 6.83 6.87     O8.5IV 218 0
15 HD 289002 * 06 45 13.3725491952 +02 08 14.685250596 10.06 10.62 10.44     B1 277 0
16 HD 54879 SB* 07 10 08.1487629504 -11 48 09.838940004 6.8 7.60 7.65     O9.7V 98 0
17 HD 56779 * 07 16 49.4082241536 -36 35 33.478464732 4.17 4.849 5.009     B3V 68 0
18 HD 60848 Be* 07 37 05.7325392528 +16 54 15.300327852 5.55 6.67 6.87     O8:V:pe 150 0
19 V* QU Pup bC* 07 51 40.3580164320 -42 53 17.533822092 4.98 5.847 6.032     B2III 62 0
20 HD 72648 * 08 32 18.9890145000 -43 55 53.360572260 7.15 7.75 7.62     B3III(II) 62 0
21 HD 72754 Be* 08 32 23.3805568848 -49 36 04.770238860 6.38 9.09 8.88 7.77   B2(Ia)pe(_sh) 117 0
22 HD 75759 SB* 08 50 21.0167636904 -42 05 23.247034188 4.95 5.90 6.00 7.18   O9V+B0V 147 0
23 CPD-57 3509 * 10 35 48.9972741480 -58 14 54.297364704 10.16 10.82 10.70 10.59 10.49 B2III 43 0
24 NGC 3324 19 * 10 37 21.8824094304 -58 37 10.026510672   11.92 11.72 11.89   ~ 9 0
25 HD 93027 Y*O 10 43 17.9451218184 -60 08 03.279537240 7.86 8.72 8.72 9.48   O9.5IV 90 0
26 CPD-59 2624 SB* 10 45 05.8358470968 -59 43 07.684616964 9.324 10.018 9.740   9.221 O9.7IV 64 0
27 HD 93521 * 10 48 23.5113981120 +37 34 13.083332412 5.67 6.79 7.03     O9.5IIInn 443 1
28 HD 95568 bC* 11 00 39.5891327592 -62 36 50.236157268   9.65 9.57 9.94   O9/B0V 27 0
29 HD 97991 * 11 16 11.7119307144 -03 28 19.095029580 6.28 7.19 7.41     B1V 149 0
30 CPD-62 2124 * 11 35 36.8614624296 -63 15 48.516783840 10.30 11.15 11.01 11.14   B2IIIHe 52 0
31 HD 101008 * 11 36 56.1752293128 -63 23 52.509820560 8.32 9.14 9.16 9.70   O9V 80 0
32 HD 110432 HXB 12 42 50.2663572384 -63 03 31.052981412 4.79 5.58 5.31     B0.5IVpe 334 0
33 HD 117357 bC* 13 31 15.4959291912 -61 43 57.436151880 8.51 9.84 9.58 9.61   O9.5/B0V 53 0
34 HD 118198 * 13 36 59.4939290040 -63 38 45.714273036 7.92 9.19 9.32 9.29   O9.7III 49 0
35 * mu. Cen Be* 13 49 36.9886872492 -42 28 25.440271450 2.37 3.27 3.43 3.41 3.50 B2Vnpe 453 0
36 HD 120991 Be* 13 53 57.2397645360 -47 07 41.390612184 5.11 6.03 6.10 6.24 6.34 B2Ve 145 0
37 * a Cen Ro* 14 23 02.2387240143 -39 30 42.544559700 3.50 4.24 4.42 4.53 4.70 B2V 289 0
38 * ome Sco bC* 16 06 48.4249866846 -20 40 09.079866331 3.10 3.92 3.97 3.91 3.99 B1V 492 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: 160 0
40 HD 152246 SB* 16 54 05.2976157264 -41 04 46.117795944 6.69 7.45 7.29 8.19   O9IV 132 1
41 V* V1297 Sco SB* 16 56 05.2157203176 -40 20 57.576260184 7.87 9.11 9.29 9.29   O7.5Vz 149 0
42 HD 156134 * 17 17 20.9200302792 -35 32 55.200460668 8.26 8.70 8.05 8.84   B0Ib 69 1
43 HD 156233 * 17 18 26.1399852936 -42 55 54.682883004 8.93 9.49 9.18 9.59   B0 22 0
44 HD 156234 * 17 18 27.4002821424 -42 58 55.500809700 7.46 8.07 7.76 8.78   B0III 25 0
45 HD 156292 SB* 17 18 45.8116958160 -42 53 29.928425568 7.13 7.75 7.55 8.42   O9.7III 72 0
46 EM* LkHA 123 Em* 18 02 23.13015 -23 01 59.9462   8.72 6.80 9.37   B1V 49 0
47 HD 164492 Y*O 18 02 23.5527520992 -23 01 50.999556180 6.49 7.49 6.80 7.52   O7.5Vz 240 0
48 HD 164492B sg* 18 02 23.7095503200 -23 01 45.155769456   8.0 12.06     B2Vnn 24 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 67 0
50 HD 164704 Y*O 18 03 18.8460034224 -22 53 03.837323292 7.29 8.83 8.81 9.05   B2II 44 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 162 0
52 HD 164844 Y*? 18 04 02.9277541608 -22 33 57.437896572 7.49 8.93 8.89 9.20   B1/2III 49 0
53 HD 315032 Be* 18 04 15.0268429224 -24 23 27.713497344 9.170 9.164 9.122 9.71 9.039 B0IV 77 0
54 CD-22 12513 Y*O 18 04 16.9873434384 -22 30 33.293259540   9.798 9.743 10.017   B4 17 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 282 1
56 HD 166033 * 18 09 46.7453465328 -23 38 44.797782696 8.48 8.65 8.60 9.39 8.32 OB 35 0
57 IC 1274 HII 18 11 -23.8           ~ 9 0
58 NGC 6604 OpC 18 18 03 -12 14.5           ~ 146 0
59 BD-12 4982 * 18 18 09.8898372072 -12 10 47.167027392 9.51 9.93 9.26 9.66   OB 57 0
60 HD 168625 s*b 18 21 19.5484021368 -16 22 26.075142156 10.15 9.78 8.37 8.76   B8Ia+ 293 2
61 HD 226868 HXB 19 58 21.6757355952 +35 12 05.784512688 9.38 9.72 8.91 8.42   O9.7Iabpvar 4590 0
62 HD 345439 Be* 19 58 48.4896519480 +23 05 21.559730172   11.61 11.11 11.37   B1V-B2V 41 0

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