2001A&A...372..152H

Query : 2001A&A...372..152H

2001A&A...372..152H - Astronomy and Astrophysics, volume 372152-164 (2001/6-2)

Search for low-mass PMS companions around X-ray selected late B stars.

HUBRIG S., LE MIGNANT D., NORTH P. and KRAUTTER J.

Abstract (from CDS):

We have observed 49 X-ray-detected bright late B-type dwarfs to search for close low-mass pre-main sequence (PMS) companions using the European Southern Observatory's ADONIS (Adaptive Optics Near Infrared System) instrument. We announce the discovery of 21 new companions in 9 binaries, 5 triple, 4 quadruple system and 1 system consisting of five stars. The detected new companions have K magnitudes between 6.mag 5 and 17.mag 3 and angular separations ranging from 0.2" to 14.1" (18-2358AU).

Abstract Copyright: ∼

Journal keyword(s): stars: binaries: visual - stars: early type - stars: pre-main-sequence - X-rays: stars

Simbad objects: 51

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Number of rows : 51
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 * pi. Tuc * 00 20 39.0422278704 -69 37 29.707462920   5.450 5.499     B9V 75 0
2 * v Eri * 03 30 37.0583178770 -05 04 30.532729396   4.631 4.725     B9III 89 0
3 * tet Ret A Er* 04 17 40.2714698640 -63 15 19.487032596   5.96 6.05 7.16   B9IV 35 0
4 * ups04 Eri SB* 04 17 53.6624004496 -33 47 54.052408258 3.07 3.44 3.56 3.57 3.68 B8V+B9.5V? 168 0
5 * 93 Tau Pu* 04 40 03.4199311320 +12 11 51.406702908   5.319 5.445     B8IV 83 0
6 * 66 Eri a2* 05 06 45.6527881872 -04 39 18.601025148 4.89 5.06 5.12     B9V 157 1
7 * iot Lep ** 05 12 17.9105854648 -11 52 08.763279736 3.95 4.35 4.45     B7.5Vn 119 0
8 * mu. Lep a2* 05 12 55.9029641016 -16 12 19.668599100 2.78 3.18 3.29 3.30 3.42 B9IV:HgMn 294 1
9 * 31 Men SB* 05 30 13.8827476176 -84 47 06.365764140   6.169 6.186     B9.5IV/V 138 0
10 HD 36408A Be* 05 32 14.1413460264 +17 03 29.278298880 5.823 6.103 6.090 6.037   B5V 109 0
11 HD 40964 ** 06 02 17.1066016440 +01 41 38.597885772   6.527 6.561     B8V 44 0
12 * 12 CMa a2* 06 47 01.4835271104 -21 00 55.451696472 5.27 5.89 6.08     B7II/III 152 0
13 HD 50860 * 06 52 47.1369252768 -43 58 32.112532380 5.98 6.36 6.46     B8V 48 0
14 * 47 Vel a2* 08 35 52.0273953624 -50 58 10.728609996   5.651 5.782     ApSi 110 0
15 HD 73952 * 08 38 44.8073176272 -53 05 25.373574564   6.348 6.431     B8V 82 0
16 HD 74067 a2* 08 40 19.1757463872 -40 15 49.936471416   5.18 5.22     kB8hA0III(CrEu) 76 0
17 * 14 Hya a2* 08 49 21.7258429872 -03 26 34.891438308 4.87 5.22 5.31     B8IIIpHgMn 154 0
18 * 19 Hya * 09 08 42.1810560840 -08 35 22.320034080 5.35 5.537 5.609     B9V 58 0
19 * tet Hya SB* 09 14 21.8600711562 +02 18 51.551915906   3.82   3.9   B9.5V+DA1.6 224 0
20 * m Car V* 09 39 21.0112812689 -61 19 40.979181659   4.432 4.498     B9IV/V 87 0
21 * del Ant * 10 29 35.3788231536 -30 36 25.434381816 5.34 5.52 5.56     B9/9.5V 63 0
22 V* V364 Car a2* 10 40 11.4474547680 -65 06 00.752607072 4.79 5.36 5.52     ApSi 154 0
23 * lam Cen * 11 35 46.8780907704 -63 01 11.405976996 2.96 3.10 3.14 3.10 3.11 B9III 138 0
24 * del Crv PM* 12 29 51.8551642 -16 30 55.552542 2.80 2.89 2.94 2.99 3.03 A0IV(n)kB9 218 0
25 * l Cen ** 12 39 52.5291353564 -39 59 14.286324017 4.16 4.56 4.64 4.66 4.75 B8II/III 122 0
26 HD 113902 * 13 07 38.2846328832 -53 27 35.149793112   5.629 5.698     B8/9V 73 0
27 * eta Mus C Pu* 13 15 09.9717536736 -67 52 49.486794708   7.48 7.20     kB8hF0:SrSi 19 1
28 * eta Mus SB* 13 15 14.9353076188 -67 53 40.529009001   4.687 4.780     B7III+B7III 113 1
29 * eta Mus B * 13 15 15.3386643576 -67 53 42.023717124           ~ 13 1
30 HD 118354 * 13 37 23.4760845096 -46 25 40.432277640   5.787 5.889     B8V 56 0
31 * 1 Boo PM* 13 40 40.4692226520 +19 57 20.585922228   5.77 5.76   5.72 A1V 54 0
32 HD 126981 * 14 30 08.6286924144 -45 19 16.881861216 5.15 5.42 5.50     B8V 64 0
33 * 108 Vir * 14 45 30.2044637184 +00 43 02.180202816   5.656 5.665     B9.5V 165 0
34 V* HR Lup a2* 15 08 12.1238757000 -40 35 02.155417224 5.25 5.65 5.79     B8IVSi 186 1
35 HD 134837 * 15 13 07.6617482160 -36 05 29.109491844   5.996 6.079     B8V 54 1
36 HD 134946 * 15 13 17.4075223008 -24 00 29.937388608   6.43 6.47     B8III 35 1
37 * mu. Lup Be* 15 18 32.02296 -47 52 30.9957 3.82         B8Ve 112 0
38 * chi Lup SB* 15 50 57.5453432166 -33 37 37.728345509 3.77 3.909 3.946     B9III 318 0
39 HD 144334 ** 16 06 06.3891324384 -23 36 22.849641396 5.29 5.84 5.92     B8V 203 0
40 * 12 Sco ** 16 12 16.03911 -28 25 02.3122           B9V 79 0
41 * del Ara PM* 17 31 05.9135939049 -60 41 01.841838888 3.21 3.52 3.62     B8Vn 98 0
42 * 52 Oph a2* 17 35 18.5001243240 -22 02 37.775976180   6.490 6.481     ApSi 81 0
43 * eps Sgr PM* 18 24 10.31840 -34 23 04.6193   1.82 1.81     B9IVp_lB? 221 1
44 * nu. Pav SB* 18 31 22.4255283661 -62 16 41.889747810 4.14 4.53 4.64     B7III 71 0
45 HD 176270 Or* 19 01 04.3028373864 -37 03 41.666365152   6.37 6.40     B9V 64 0
46 * lam Aql PM* 19 06 14.9386542192 -04 52 57.225885348 3.07 3.34 3.43 3.46 3.55 B8.5V 234 0
47 HD 180555 ** 19 16 26.7940882536 +14 32 40.602698268   5.64 5.67     B9.5V 69 0
48 * alf Sgr PM* 19 23 53.1753985532 -40 36 57.373929695 3.54 3.841 3.943     B8V 110 0
49 * h02 Sgr PM* 19 36 42.4333620826 -24 53 01.035127228   4.528 4.598     B8/9V 69 0
50 * bet Scl PM* 23 32 58.2607029954 -37 49 05.825575113 3.92 4.28 4.37 4.37 4.44 B9.5IIIpHgMnSi 194 0
51 * i01 Aqr * 23 44 12.0781022760 -18 16 37.018426728   5.152 5.239     B9V 97 0

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