1994A&A...286..486L

Query : 1994A&A...286..486L

1994A&A...286..486L - Astronomy and Astrophysics, volume 286486-490 (1994/6-2)

Incidence of X-ray sources among magnetic chemically peculiar stars.

LEONE F.

Abstract (from CDS):

Cash & Snow (1982) and Golub et al. (1983) have detected X-ray emission from 3 out of 7 observed magnetic chemically peculiar (CP) stars. Although the incidence of X-ray sources apparently is very high, these authors concluded that such emission is not unquestionable because of the presence of a companion. To determine the incidence of X-ray sources among hot CP stars, I have checked the list of B-type stars measured by Grillo et al. (1992) selecting 90 stars. Of the 4 magnetic CP stars showing X-ray emission 3 are members of a binary system. Thus it appears that detectable X-ray emission from magnetic CP stars is not very common and still questionable. To find out whether HD 37017 presents X-ray emission (Drake et al. 1987) or not (Grillo et al. 1992), I have analysed an HRI frame from the ROSAT satellite finding no evidence for X-ray emission at this star's position.

Abstract Copyright: ∼

Journal keyword(s): stars: chemically peculiar - X-rays: stars - stars: individual: HD 37017

Simbad objects: 99

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Number of rows : 99
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 * 4 Cet V* 00 07 44.1111674208 -02 32 55.248548028 5.82 6.29 6.43     ApSi 93 0
2 * pi. And SB* 00 36 52.8513216207 +33 43 09.636294654 3.65 4.20 4.36 4.40 4.52 B5V 209 0
3 * phi Eri PM* 02 16 30.5860916570 -51 30 43.794586801 3.06 3.45 3.57 3.64 3.75 B8IV 161 0
4 HD 16772 * 02 42 29.4828902208 +40 15 40.502577852   7.55 7.56     B9V 25 0
5 * 20 Tau PM* 03 45 49.6081548365 +24 22 03.877565838 3.40 3.80 3.87 3.85 3.90 B7III 451 1
6 * 27 Tau SB* 03 49 09.7430578114 +24 03 12.301679809 3.18 3.54 3.63 3.62 3.68 B8III 387 0
7 HD 23662 * 03 51 41.7756333480 +68 30 26.950213980   6.236 6.299     B9IVp 40 0
8 * 53 Tau a2* 04 19 26.0975894496 +21 08 32.298968148   5.413 5.482     B9Vsp 283 0
9 HD 28365 * 04 27 56.4007240344 -13 27 52.257479004   8.35 8.42     ApSi 26 0
10 HD 30584 Pu* 04 51 04.8356251344 +44 58 07.762727280   8.78 8.62     A0II-IIIpSi 46 0
11 V* V1360 Ori a2* 05 01 06.0227313288 +03 43 02.356859388   7.11 7.24     B8II 45 0
12 HD 32273 * 05 02 00.0227074752 +01 36 31.914071280   6.411 6.511     B7V 49 0
13 * 66 Eri a2* 05 06 45.6527881872 -04 39 18.601025148 4.89 5.06 5.12     B9V 157 1
14 HD 34736 Pu* 05 19 21.2291969760 -07 20 50.042070348   7.74 7.82     ApSi 50 0
15 HD 35456 ** 05 24 40.3787180856 -02 29 52.248170436   6.877 6.950     B9II/III 91 0
16 HD 35502 SB* 05 25 01.2041767248 -02 48 55.690705872 6.76 7.30 7.34 7.32 7.40 B5IVsnp 135 0
17 V* V1093 Ori a2* 05 30 45.2295918768 -00 22 24.267744120   8.15 8.21     ApSi 80 0
18 * del02 Ori SB* 05 32 00.4064140728 -00 17 04.347484800 5.97 6.67 6.83     B2Vsn 296 0
19 HD 36549 Pe* 05 32 39.4835831448 +02 05 31.822127628   8.50 8.54     B8Vp 67 0
20 HD 36629 Y*O 05 32 57.0824474232 -04 33 59.339585016 7.01 7.67 7.65 7.53 7.53 B2V 201 0
21 V* V1045 Ori a2* 05 34 53.9637586032 -04 06 37.494251928 6.08 6.569 6.709     B9III 148 0
22 HD 36960 * 05 35 02.6823091513 -06 00 07.308349203 3.52 4.50 4.72     B0.5V 283 0
23 HD 36958 Or* 05 35 04.7875827888 -04 43 54.626071800 6.68 7.22 6.90     B3/5V 111 0
24 HD 36982 Or* 05 35 09.8363878512 -05 27 53.216296776 8.00 8.58 8.46     B2V 225 0
25 HD 36881 SB* 05 35 13.2466726656 +10 14 24.278794332 5.66 5.734 5.638     B9IIIp 70 0
26 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
27 HD 37058 Or* 05 35 33.3539646576 -04 50 15.181113696 6.40 7.18 7.30     B3/5II 177 0
28 HD 37129 * 05 36 06.2580409656 -04 25 32.781782028 6.32 7.02 7.17 7.22 7.38 B3III/IV 136 0
29 HD 37149 Be* 05 36 17.8324358232 -01 38 07.184455692 7.43 7.92 8.02     B7IV 72 0
30 V* V1133 Ori a2* 05 36 30.9592251264 -06 27 13.813302564 7.62 8.03 8.10     B9IV/V 91 0
31 HD 37235 * 05 36 57.3720663192 -00 42 06.947220276   8.04 8.13     B8IV/V 55 0
32 HD 37321 ** 05 37 34.80316 -01 25 19.6841 6.46 7.01 7.09 7.09 7.17 B5III 80 0
33 HD 37470 * 05 38 34.7255414376 -06 09 49.954286772   8.26 8.23     B8/9III 83 0
34 HD 37525 Y*O 05 39 01.4927799048 -02 38 56.364214344   7.98 8.06   8.210 B5V 95 1
35 V* V901 Ori Ro* 05 40 56.3704617744 -01 30 25.856677224 5.96 6.82 6.96     B2V 354 2
36 HD 38366 a2* 05 45 32.6815573776 +09 19 00.760332792   9.02 9.03     B9pSi 19 0
37 HD 39286 * 05 52 23.4063709536 +19 52 04.250177472   6.518 5.985     K0IIb+B8IV 58 0
38 HD 45719 SB* 06 26 06.9428530896 -52 39 10.682369244   8.34 8.02     A0/1mA9-F0 13 0
39 HD 45530A a2* 06 28 13.9590789408 +05 16 20.115418044   7.556 7.603 8.69   A0IIIpSiSr 54 0
40 HD 47756 * 06 40 31.9464201288 +06 22 16.506295536 5.91 6.358 6.498     B8pSiCrSr 77 0
41 V* V684 Mon EB* 06 40 38.3663658576 +09 47 16.046270268 7.71 8.31 8.44 8.492 8.516 B2.5V 87 0
42 HD 262013 Y*O 06 41 12.9352165416 +09 35 49.916028588 8.75 9.15 9.21   9.229 B9V 56 0
43 HD 47934 mul 06 41 22.039344 +09 43 51.63204 8.19 8.62 8.70 9.03 8.632 B6 57 0
44 CD-23 4550 * 06 53 59.2467474264 -23 42 24.407562672   10.60 10.70     ~ 17 0
45 HD 51379 * 06 56 44.6232719424 -09 00 55.926824220   8.98 9.01     ApSi 18 0
46 V* V385 Pup a2* 07 43 58.1493899784 -28 25 53.698775124   7.97 8.07     B9III(pSi) 33 0
47 * zet CMi * 07 51 41.9887267800 +01 46 00.726461076 4.58 5.03 5.16 5.18 5.33 B8II 102 0
48 * chi Car bC* 07 56 46.7200933968 -52 58 56.443666728 2.64 3.267 3.431     B3IV 154 1
49 HD 68555 a2* 08 10 52.5996133440 -46 54 53.744556132   9.17 9.18     ApSi(Cr) 15 0
50 HD 68861 * 08 12 55.4302093368 -35 09 01.529328960   9.12 9.02     B9III(pSi) 8 0
51 HD 72034 a2* 08 28 48.0219400200 -45 44 06.922765212   9.46 9.48     ApSi 15 0
52 HD 73009 a2* 08 34 12.3748251360 -44 48 10.349397288   9.36 9.40     ApSi(Cr) 15 0
53 HD 73868 * 08 38 51.3635931456 -43 45 31.995546156   8.85 8.94     B8/9II/III(p) 15 0
54 HD 74478 * 08 41 49.1680860600 -54 57 59.604618816   9.89 9.88     B9II/III(pSi) 11 0
55 HD 76439 a2* 08 54 24.6377159232 -45 27 15.504618636   7.83 7.96     ApSi 29 0
56 HD 76650 a2* 08 55 46.9706933904 -46 52 04.245636216   8.36 8.46     ApSi 20 0
57 * kap Cnc a2* 09 07 44.8095541176 +10 40 05.519586828 4.70 5.13 5.24     B8IIImnp 376 0
58 HD 85767 a2* 09 52 14.0380325496 -56 59 38.686914132   9.65 9.53     ApSi 14 0
59 V* V423 Car a2* 09 55 05.9996548464 -57 22 58.525055328   6.62 6.74     ApSi 42 0
60 HD 90553 * 10 25 44.5573961064 -58 24 36.641925252   9.45 9.46     ApSi 14 0
61 HD 91825 a2* 10 34 43.8162923352 -59 54 13.827265128   9.58 9.64     B8III/IV(pSi) 20 0
62 HD 92938 Be* 10 42 14.1192723749 -64 27 59.133997516 4.10 4.68 4.82     B3V 131 0
63 * tet Car SB* 10 42 57.4019674 -64 23 40.020796 1.53 2.54 2.76 2.87 3.10 B0Vp 351 0
64 HD 93500 ** 10 46 24.940248 -59 26 42.80208   8.874 8.863 9.452   ApCrEuSr 21 0
65 HD 94873 a2* 10 56 14.5837972560 -52 35 51.167458068   8.20 8.29     ApSi 27 0
66 HD 96446 bC? 11 06 05.8219128840 -59 56 59.564064444 5.81 6.57 6.69     B2IIIp 177 0
67 HD 98169 Pu* 11 16 40.7664577416 -60 49 34.952964564   9.58 9.65     ApSi 15 0
68 HD 99204 a2* 11 24 21.3363871992 -59 17 09.686508468   8.78 8.84     ApSi 16 0
69 HD 118242 ** 13 37 25.67183 -64 56 08.7328           ApSi 27 0
70 HD 122811 * 14 06 06.8636826552 -61 30 52.009205004   9.03 9.00     ApSi 23 0
71 HD 127493 HS* 14 32 21.4926471192 -22 39 25.646693688 8.64 9.74 10.08     sdOHe 110 0
72 HD 128521 a2* 14 39 36.3967901496 -58 10 28.994458116   9.46 9.43     ApSi 14 0
73 HD 128697 * 14 40 59.8406218968 -61 56 57.281907336   9.86 9.90     ApSi 19 0
74 HD 128840 a2* 14 41 26.4716396352 -57 41 22.798499784   9.14 9.11     ApSi 15 0
75 HD 131120 Pu* 14 52 51.0731473122 -37 48 11.382138696 4.11 4.855 5.015     B7IIIp 134 0
76 HD 140680 * 15 47 40.2799266216 -56 04 25.708954800   9.84 9.75     ApSi 9 0
77 * phi Her a2* 16 08 46.1762180496 +44 56 05.661355344 3.92 4.20 4.27 4.27 4.36 B9VspHgMn 304 1
78 HD 145488 * 16 13 38.2382036400 -50 35 58.989406992   10.45 10.30     B7/8II(pSi) 12 0
79 HD 148579 * 16 29 59.1970010928 -25 08 52.061984376 7.56 7.58 7.32     B9V 79 0
80 HD 149572 * 16 38 49.4322801600 -57 07 05.949085224   9.20 9.18     B9III(pSi) 8 0
81 HD 152457 * 16 55 20.7950406432 -40 56 06.951431724 9.22 9.76 9.60     A3III(m) 28 0
82 V* V974 Sco a2* 17 04 09.3337301904 -37 46 02.876867544   8.92 8.93     ApSi 36 0
83 HD 159379 a2* 17 35 54.5912942856 -33 50 56.520829608   8.63 8.57     ApSi 24 0
84 HD 159631 * 17 37 08.8526576808 -32 12 55.269251136   9.02 9.01     ApSi 13 0
85 * mu. Oph * 17 37 50.7131595894 -08 07 07.578293771 4.53 4.73 4.62 4.44 4.33 B8II((Mn)) 139 1
86 HD 161277 * 17 46 30.7399271352 -39 15 53.364020580   7.09 7.07     ApSi 34 0
87 HD 166053 * 18 09 36.6540178440 -19 21 26.997390684   8.47 8.38     B9Ib/II 32 0
88 HD 168163 * 18 19 04.0369164840 -16 18 06.462815940   8.87 8.72 8.63 9.228 B8III 31 0
89 HD 169021 * 18 24 03.9224455512 -34 20 02.740881444   6.93 6.98     ApSi 18 0
90 * bet Lyr SB* 18 50 04.7951442356 +33 21 45.600371200 2.85 3.42 3.42 3.31 3.29 B8.5Ib-II 955 0
91 * 112 Her SB* 18 52 16.4279808528 +21 25 30.512193132 4.83 5.304 5.393     B9pHg 207 0
92 V* V686 CrA a2* 18 56 40.4859327624 -37 20 35.701261512 4.53 5.24 5.38     B3V 214 0
93 HD 332701 Pu* 19 47 27.3796209696 +29 26 57.570537012   9.00 9.00     ~ 21 0
94 V* V2095 Cyg a2* 19 56 50.1551656776 +44 16 16.046775912   7.88 7.90     B9pSiCr 60 0
95 HD 189178 SB* 19 57 13.8676056936 +40 22 04.173175488   5.352 5.455     B5V 76 0
96 HD 227244 ** 20 02 19.0284866904 +36 25 12.090236988   9.448 9.098     A7IV 19 0
97 HD 218970 PM* 23 12 30.6294754224 -21 06 43.453464732   9.57 9.81     A0p 44 0
98 * 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
99 * 26 Psc * 23 55 07.7926417896 +07 04 15.496121280   6.153 6.209     B9V 61 0

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