2001AJ....122.2008A

Query : 2001AJ....122.2008A

2001AJ....122.2008A - Astron. J., 122, 2008-2012 (2001/October-0)

Are stellar rotational axes distributed randomly.

ABT H.A.

Abstract (from CDS):

Stellar line widths yield values of Vsini, but the equatorial rotational velocities, V, cannot be determined for individual stars without knowledge of their inclinations, i, relative to the lines of sight. For large numbers of stars we usually assume random orientations of rotational axes to derive mean values of V, but we wonder whether that assumption is valid. Individual inclinations can be derived only in special cases, such as for eclipsing binaries where they are close to 90° or for chromospherically active late-type dwarfs or spotted (e.g., Ap) stars where we have independent information about the rotational periods. We consider recent data on 102 Ap stars for which Catalano & Renson compiled rotational periods from the literature and Abt & Morrell (primarily) obtained measures of Vsini. We find that the rotational axes are oriented randomly within the measuring errors. We searched for possible dependence of the inclinations on Galactic latitude or longitude, and found no dependence.

Abstract Copyright: ∼

Journal keyword(s): Stars: Peculiar - Stars: Rotation

Simbad objects: 103

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Number of rows : 103
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* CG And a2* 00 00 43.6344938328 +45 15 12.007059804   6.299 6.347     A0IIspSiSrHg 161 0
2 HD 1048 * 00 14 55.8983946240 +22 17 03.212768184   6.235 6.234     A1p 54 0
3 V* GO And a2* 00 50 18.2653153128 +45 00 08.135537076 6.13 6.16 6.15     A3VpSiSrCrEuKsn 129 0
4 * 87 Psc SB* 01 14 07.6281618312 +16 08 00.514454568   5.873 5.962     B8III 148 0
5 HD 9484 * 01 33 03.5251929120 -09 00 52.783146216   6.549 6.595     B9V 47 0
6 V* KK And a2* 01 34 16.6199766816 +37 14 13.793039412   5.81 5.91     B9IV 84 0
7 V* GY And a2* 01 38 31.8255225672 +45 23 58.935650100   6.343 6.380     A2:VpSiSrCrEu 270 0
8 * alf Psc A * 02 02 02.8219762236 +02 45 49.579059841   4.06 4.11     kA0hA7Sr 183 0
9 * nu. For a2* 02 04 29.4455576134 -29 17 48.496908718 4.01 4.52 4.69 4.73 4.87 B9.5IIIspSi 153 0
10 * 63 And a2* 02 20 58.2015432888 +50 09 05.385224196   5.46 5.59     B9VpSi 118 0
11 HD 15144 a2* 02 26 00.3479612520 -15 20 28.495226652 6.06 5.97 5.83 5.71 5.67 A3VpSrCrEu 185 0
12 * iot Cas a2* 02 29 03.94780 +67 24 08.9170           A3IIIpSr+F5V 268 0
13 * 21 Per a2* 02 57 17.2817216760 +31 56 03.193498176   5.081 5.093     A2VspSiEu 206 0
14 * 56 Ari a2* 03 12 14.2461137352 +27 15 25.085668788 5.22 5.64 5.76     B6IV-V 271 0
15 * 20 Eri a2* 03 36 17.4041095200 -17 28 01.472307996 4.61 5.10 5.23     B8/9III 181 0
16 * 22 Eri a2* 03 40 38.3331139440 -05 12 38.555731188 4.81 5.38 5.53     B9IIIpSi4200 134 0
17 V* V766 Tau a2* 03 51 15.8708072234 +13 02 45.875628119 5.88 6.32 6.38 6.36 6.39 B9pS 106 0
18 * tau08 Eri SB* 03 53 42.7023562560 -24 36 44.021417544   4.496 4.623     B6V 123 0
19 * tau09 Eri a2* 03 59 55.4837679360 -24 00 58.377195468 4.11 4.52 4.66 4.64 4.77 ApSi 172 0
20 * 41 Tau a2* 04 06 36.4125948768 +27 35 59.640149616   5.041 5.172     Ap 249 0
21 * 56 Tau a2* 04 19 36.7048893816 +21 46 24.566827836   5.231 5.346     A0VpSi 193 0
22 * alf Dor a2* 04 33 59.77719 -55 02 41.9243 2.83 3.18 3.28 3.29 3.38 B8IIIpSi 151 0
23 * 11 Ori a2* 05 04 34.1491891634 +15 24 14.767720310   4.609 4.661     A1VpSiCr 156 0
24 HD 32996 * 05 06 36.7428644112 -13 07 21.436598928   6.005 6.039     B9.5/A0IV 40 0
25 V* BN Cam a2* 05 12 22.4545154808 +73 56 48.040416348 4.970 5.320 5.450     B9.5VpSi 106 0
26 V* IQ Aur a2* 05 19 00.0284573784 +33 44 54.220806888   5.201 5.371     A0p 293 0
27 HD 34797 a2* 05 19 18.3112191840 -18 30 34.391115684 6.02 6.43 6.54     B7Vp 111 0
28 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
29 * 137 Tau a2* 05 52 22.2914333688 +14 10 18.428386584   5.532 5.586     A0VpSiSrCr 111 0
30 * tet Aur a2* 05 59 43.27012 +37 12 45.3047 2.36 2.54 2.62 2.62 2.68 A0VpSi 296 1
31 HD 41269 * 06 05 33.8990688480 +33 35 56.579173440   6.136 6.213     B9VpSrCr 64 0
32 V* V592 Mon a2* 06 50 42.3030217728 -08 02 27.587802588 6.31 6.29 6.29     B9V 120 0
33 * I Pup a2* 07 12 33.6251363845 -46 45 33.496585918 4.80 4.81 4.49 4.17 3.95 F3VFe-1.0 146 0
34 * L01 Pup a2* 07 13 13.3506005472 -45 10 57.855357732   4.855 4.874     B9V 98 0
35 * 49 Cam a2* 07 46 27.4146675768 +62 49 49.882910592   6.750 6.458     A7VpSrCrEuSiKsn 146 0
36 HD 64740 * 07 53 03.6344819483 -49 36 46.956285817 3.48 4.40 4.63 4.76 4.97 B2V 223 0
37 * 53 Cam a2* 08 01 42.4403874648 +60 19 27.806833200   6.177 6.008     A3VpSrSiCrEu 410 0
38 V* V336 Pup a2* 08 02 44.7832446360 -41 18 35.371028736   5.358 5.497     B9pSi 62 0
39 * 15 Cnc a2* 08 13 08.8680600240 +29 39 23.536760076   5.541 5.605     B8VpSi 138 0
40 HD 74196 * 08 40 17.4649643448 -53 00 55.430609904 4.97 5.47 5.61     B9/A0 144 0
41 HD 74560 SB* 08 42 25.3866034128 -53 06 50.343377699 3.97 4.655 4.815     B3IV 182 0
42 * nu. Cnc SB* 09 02 44.2677118128 +24 27 10.392222600   5.404 5.447     A0III 205 0
43 * L Car * 10 22 58.1465809448 -66 54 05.385596996 4.35 4.86 4.99     B8V 120 0
44 * 25 Sex a2* 10 23 26.4782253528 -04 04 26.518221624 5.70 5.87 5.97     ApSiCr 135 0
45 * 45 Leo a2* 10 27 38.9889218664 +09 45 44.610005160 5.89 5.98 6.04     B9.5IV-VpSiCrSr(Mn) 144 0
46 V* V364 Car a2* 10 40 11.4474547680 -65 06 00.752607072 4.79 5.36 5.52     ApSi 154 0
47 * 46 Cen a2* 11 07 16.6899055992 -42 38 19.247612928   5.25 5.24     ApSrCrEu 73 0
48 V* EP UMa a2* 11 09 39.7864853928 +67 12 36.756332280   6.278 6.061     A7IVpSr 88 0
49 HD 98088 a2* 11 16 58.1772734352 -07 08 04.869775428 6.49 6.34 6.14     ApSrCrEu 206 0
50 * bet Hya a2* 11 52 54.52149 -33 54 29.2672 3.85 4.18 4.28 4.27 4.35 kB8hB8HeA0VSi 110 0
51 * 17 Com a2* 12 28 54.7022406648 +25 54 46.265813136   5.208 5.236     B9VCrEu 288 0
52 * 21 Com a2* 12 31 00.5605002264 +24 34 01.797245328   5.496 5.436     A2pv 295 0
53 * eps UMa a2* 12 54 01.7495922 +55 57 35.362645 1.76 1.75 1.77 1.79 1.82 A1III-IVpkB9 488 0
54 * alf02 CVn a2* 12 56 01.6655889007 +38 19 06.155170512 2.44 2.76 2.88 2.98 3.05 A0VpSiEu 707 0
55 V* V824 Cen a2* 13 10 58.4324574120 -52 34 00.832901520   5.943 6.026     ApSi 85 0
56 * o Vir a2* 13 34 07.9312445507 +03 39 32.288960317 4.96 4.96 4.94 4.86 4.89 ApEuCrSr 356 0
57 V* CQ UMa a2* 13 40 21.3848060304 +57 12 27.374885568   6.380 6.273     A2IVpSrCr 124 0
58 * 84 UMa a2* 13 46 35.6567876472 +54 25 57.643558644   5.632 5.675     A0VpSrCrEu 168 0
59 V* V869 Cen SB* 14 09 35.0324964096 -51 30 16.832689380   5.913 5.961     B8V 96 0
60 V* CU Vir a2* 14 12 15.8055434051 +02 24 33.945178515 4.46 4.90 5.02 5.10 5.23 ApSi 411 0
61 V* CS Vir a2* 14 18 38.2505609712 -18 42 57.465294264 5.86 5.90 5.90     ApSi(Cr) 322 0
62 HD 133029 a2* 15 00 38.7178984848 +47 16 38.791986348   6.250 6.351     A0VspSiSrCr 222 0
63 V* HZ Lup a2* 15 06 33.1978166352 -30 55 06.533677056   5.893 5.977     ApSi 110 0
64 * bet CrB a2* 15 27 49.7540595700 +29 06 20.494640434 4.08 3.97 3.68 3.50 3.45 F2VpSrCrEuSi 703 0
65 * chi Ser a2* 15 41 47.4147355608 +12 50 51.093705840 5.42 5.37 5.33 5.28 5.32 A2VpMnEu(Sr) 194 0
66 V* BP Boo a2* 15 42 50.7602109000 +52 21 39.243860316   5.430 5.482     A0VpSiCr 140 0
67 * 3 Sco Ro* 15 54 39.5296532472 -25 14 37.459966128 5.23 5.81 5.87     B8III/IV 232 0
68 V* V913 Sco Ro* 15 58 34.8665694960 -24 49 53.361727284 4.70 5.34 5.43     B5V 226 0
69 HD 144334 ** 16 06 06.3891324384 -23 36 22.849641396 5.29 5.84 5.92     B8V 203 0
70 * ome Her a2* 16 25 24.9546742056 +14 01 59.762072676 4.53 4.57 4.58 4.51 4.55 A2VpCrSr 242 0
71 * ome Oph a2* 16 32 08.2003815598 -21 27 59.052127058 4.69 4.56 4.45 4.32 4.30 ApSrEuCr 167 0
72 V* V773 Her a2* 16 36 42.9385265832 +15 29 50.827223688   6.296 6.355     A2VpSiSrCr 114 0
73 V* LP TrA a2* 16 46 39.9916001976 -67 06 34.885332000   5.000 5.100     ApSi 77 0
74 * l Her a2* 16 47 46.4200216512 +05 14 48.291336960 5.20 5.22 5.24     A1VpSi 138 0
75 * 52 Her a2* 16 49 14.21821 +45 58 59.9620   4.914 4.823     A1VpSiSrCr 267 0
76 V* V451 Her a2* 17 01 33.0515292528 +14 56 58.988031648 6.39 6.35 6.31     A0VpSiSrCrEu 183 0
77 * 52 Oph a2* 17 35 18.5001243240 -22 02 37.775976180   6.490 6.481     ApSi 81 0
78 V* V957 Sco BS* 17 52 13.6613130072 -34 47 57.109291728 5.16 5.80 5.90     B5IVp 146 0
79 V* V951 Sco a2* 17 53 58.1358478008 -34 49 51.800052684   6.43 6.42     kB6hA0VHeA0pSiCr 111 0
80 V* V771 Her a2* 17 58 52.3058286816 +45 28 34.391604360   6.407 6.481     B9pSiSr 94 0
81 HD 164258 a2* 18 00 15.6738880464 +00 37 46.112578968 6.70 6.52 6.37     A6VpSrCr 99 0
82 V* V4045 Sgr a2* 18 11 58.1620633344 -28 54 05.527987128   6.50 6.52     B9IV(pSrEuCr) 80 0
83 V* V692 CrA Ro* 18 13 12.6984255264 -41 20 09.997218708   5.298 5.462     B2III 66 0
84 * phi Dra a2* 18 20 45.43224 +71 20 16.1499   4.15 4.22     B8V 200 0
85 V* V432 Sct a2* 18 29 46.7597878008 -14 34 55.154828424   6.014 6.027     ApEuCrEu 105 0
86 HD 170973 a2* 18 32 06.8865165216 +03 39 34.601753412   6.381 6.407     B9IIIpSi 133 0
87 V* V2393 Oph a2* 18 33 23.3029636152 +08 16 05.698559100 6.05 6.379 6.416     B9III 77 0
88 V* V535 Her a2* 18 45 35.6181098712 +21 59 04.850169216   6.524 6.522     A1VpSiHgMn 160 0
89 V* LV Dra a2* 19 00 13.6777912704 +50 32 00.478630500 4.42 5.202 5.377     B2.5IV 115 0
90 HD 177517 * 19 05 41.1802109904 -15 39 37.510548984 5.70 5.95 5.97     B8III(pSi) 81 0
91 V* V1291 Aql a2* 19 53 18.7357174440 -03 06 52.063556976   5.837 5.619     F0VpSrCrEu 285 0
92 V* V2015 Cyg a2* 20 33 54.8435604456 +46 41 37.867484940   5.626 5.769     B8pSi 106 0
93 * 20 Cap a2* 20 59 36.1395973248 -19 02 07.002794616   6.12 6.25     ApSi 89 0
94 * tet01 Mic a2* 21 20 45.6194367384 -40 48 34.620146136 4.77 4.84 4.82 4.73 4.69 ApCrEuSr 142 0
95 V* V1934 Cyg a2* 21 24 55.4388619200 +49 19 23.259823896 6.55 6.55 6.58     A0VpSrCrSiHg 59 0
96 HD 210071 * 22 06 13.5664908456 +56 20 36.219953940   6.286 6.382     A0VpSiSr 80 0
97 V* ET And a2* 23 17 56.0115388728 +45 29 20.119357248   6.447 6.479     A0VpSiSr 151 0
98 * kap Psc a2* 23 26 55.9558721856 +01 15 20.177913204 4.94 4.98 4.94 4.87 4.90 A2VpSrCrSi 290 0
99 V* CG Tuc a2* 23 29 00.9815552856 -63 06 38.359594512   5.51 5.68     ApSi 99 0
100 V* V354 Peg a2* 23 31 43.0297787640 +28 24 12.555107604   6.418 6.388     A0VpSrCrSiHg 76 0
101 HD 223358 ** 23 48 39.05246 +64 52 35.2292           A0VpSrSiCrHg 87 0
102 HD 223358A a2* 23 48 39.0538619085 +64 52 35.225787915   6.78 6.76     ~ 82 0
103 * i03 Aqr Pe* 23 51 21.3383366673 -18 54 32.990905266 4.62 5.04 5.18     A0VpSiSr 207 0

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