2006A&A...446..267R

Query : 2006A&A...446..267R

2006A&A...446..267R - Astronomy and Astrophysics, volume 446267-277 (2006/1-4)

Rotation- and temperature-dependence of stellar latitudinal differential rotation.

REINERS A.

Abstract (from CDS):

More than 600 high resolution spectra of stars with spectral type F and later were obtained in order to search for signatures of differential rotation in line profiles. In 147 stars the rotation law could be measured, with 28 of them found to be differentially rotating. Comparison to rotation laws in stars of spectral type A reveals that differential rotation sets in at the convection boundary in the HR-diagram; no star that is significantly hotter than the convection boundary exhibits the signatures of differential rotation. Four late A-/early F-type stars close to the convection boundary and at vsini≃100km/s show extraordinarily strong absolute shear at short rotation periods around one day. It is suggested that this is due to their small convection zone depth and that it is connected to a narrow range in surface velocity; the four stars are very similar in Teff and vsin i. Detection frequencies of differential rotation α=ΔΩ/Ω>0 were analyzed in stars with varying temperature and rotation velocity. Measurable differential rotation is more frequent in late-type stars and slow rotators. The strength of absolute shear, ΔΩ, and differential rotation α are examined as functions of the stellar effective temperature and rotation period. The highest values of ΔΩ are found at rotation periods between two and three days. In slower rotators, the strongest absolute shear at a given rotation rate ΔΩmax is given approximately by ΔΩmax∝P–1, i.e., αmax≃const. In faster rotators, both αmax and ΔΩmax diminish less rapidly. A comparison with differential rotation measurements in stars of later spectral type shows that F-stars exhibit stronger shear than cooler stars do and the upper boundary in absolute shear ΔΩ with temperature is consistent with the temperature-scaling law found in Doppler Imaging measurements.

Abstract Copyright: ∼

Journal keyword(s): stars: activity - stars: late-type - stars: rotation - stars: general

VizieR on-line data: <Available at CDS (J/A+A/446/267): tableb1.dat tableb2.dat>

Simbad objects: 153

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Number of rows : 153
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 * bet Cas dS* 00 09 10.68518 +59 08 59.2120 2.73 2.61 2.27 1.97 1.77 F2III 551 0
2 * rho Tuc SB* 00 42 28.3718820672 -65 28 04.906571664   5.875 5.381     F6V 68 0
3 HD 4247 PM* 00 44 44.3961246504 -22 00 22.080121164   5.542 5.220     F3VFe-1 97 0
4 * 65 Psc B PM* 00 49 52.8738026040 +27 42 38.911000608 5.990 6.69 6.28 6.12   F4III 58 0
5 * 30 Cet PM* 01 07 46.2087548376 -09 47 07.982452284   6.140 5.705     F5V 68 0
6 HD 6869 ** 01 08 33.83381 -46 40 04.7340           F0V 50 0
7 * psi03 Psc * 01 09 49.2008972448 +19 39 30.264861132   6.263 5.562     F9IIIa 136 0
8 HD 15524 PM* 02 30 32.3533307604 +25 14 06.102857207   6.291 5.879     F6IV 70 0
9 * mu. Cet SB* 02 44 56.5373458591 +10 06 50.921738061   4.57 4.26     A9IIIp 201 0
10 * tau01 Eri PM* 02 45 06.1988006895 -18 34 21.442179919 4.94 4.94 4.46 4.03 3.76 F7V 244 0
11 * rho Ari PM* 02 56 26.1717266513 +18 01 23.665188613   6.02 5.58 5.3   F6V 167 0
12 * kap Ret PM* 03 29 22.6774206459 -62 56 15.104181615   5.09 4.70     F3IV/V 184 0
13 * tau06 Eri PM* 03 46 50.8873186498 -23 14 59.002090709   4.65 4.20     F5IV-V 206 0
14 HD 24357 PM* 03 53 10.0461915456 +17 19 37.507270260   6.294 5.946 5.745 5.545 F4V 197 0
15 HD 25457 TT* 04 02 36.7442719512 -00 16 08.119921152   5.88 5.38     F7V 293 0
16 HD 25621 PM* 04 04 09.8751899184 +02 49 37.019733024   5.86   5.0   F6V 145 0
17 HD 22701 PM* 04 10 01.6443399480 +86 37 34.100362272 6.220 6.220   5.6   F5IV 48 0
18 * 58 Tau dS* 04 20 36.3103641648 +15 05 43.630164636   5.475 5.242 5.126 4.999 F0IV-V 210 0
19 * 85 Tau PM* 04 31 51.7588453752 +15 51 05.846138784   6.342 5.998 5.799 5.604 F1.5Vn 138 0
20 * m Per * 04 33 24.9030370296 +43 03 50.015366964   6.469 6.078     F0V 56 0
21 * alf Cae PM* 04 40 33.7125133631 -41 51 49.504549835 4.79 4.79 4.45 4.11 3.90 F2V 134 0
22 * bet Cae PM* 04 42 03.4822983552 -37 08 39.588865224   5.42 5.05     F3IV 102 0
23 HD 30034 PM* 04 44 25.8285113424 +11 08 46.083452208   5.638 5.379 5.230 5.082 F0V 140 0
24 * pi.03 Ori PM* 04 49 50.4112051485 +06 57 40.600622266 3.620 3.630 3.190 2.77 2.51 F6V 601 0
25 HD 33167 PM* 05 10 42.9204964200 +46 57 43.456807404       5.4   F5V 84 0
26 * 111 Tau BY* 05 24 25.4632701888 +17 23 00.726415944   5.52   4.7   F8V 370 0
27 * 122 Tau PM* 05 37 03.7355706744 +17 02 25.177772616   5.775 5.525     F0V 103 0
28 * 39 Aur PM* 06 05 03.3846976704 +42 58 53.888575152       5.7   F3V 59 0
29 * k Ori PM* 06 16 26.6191067712 +12 16 19.787639592   5.46   4.8   F5V 153 0
30 HD 44497 PM* 06 22 36.3924256056 +12 34 12.853157052 6.350 6.300 6.000     F0III 48 0
31 HD 46273 ** 06 29 49.06454 -50 14 20.6831           F2V 74 0
32 * ksi Gem RG* 06 45 17.3644854477 +12 53 44.141855267 3.85 3.79 3.36 2.97 2.74 F5IV-V 233 0
33 * pi. CMa PM* 06 55 37.4304387192 -20 08 11.388856308   5.027 4.664     F1.5V 89 0
34 * 48 Gem * 07 12 26.3762241744 +24 07 42.938002164 6.30 6.21 5.85     F5III-IV 77 0
35 * del Gem SB* 07 20 07.3745658105 +21 58 56.294578663 3.91 3.87 3.53 3.17 2.98 F2VkF0mF0 255 0
36 * 59 Gem * 07 24 33.4531218504 +27 38 16.281508164   6.110 5.759     F0:III: 44 0
37 * 61 Gem ** 07 26 56.3284417224 +20 15 27.197178912   6.236 5.935     F2Vn 53 0
38 * rho Gem PM* 07 29 06.71887 +31 47 04.3773 4.48 4.50 4.18 3.86 3.67 F1V 338 0
39 * del02 CMi * 07 33 11.6657432976 +03 17 25.365062508   5.895 5.571     F1III-IV 69 0
40 HD 60555 * 07 33 52.3633899264 -28 34 03.825695820   7.06 6.76     A5/7V+(F) 30 0
41 HD 61035 * 07 38 14.3693204256 +24 21 37.595759904 6.670 6.690 6.370     F0 46 0
42 * omi Gem PM* 07 39 09.9346623336 +34 35 03.502791096 5.41 5.30 4.90 4.51 4.29 F5-6IV 113 0
43 * 4 Pup * 07 45 56.8695645744 -14 33 49.698704304   5.342 5.026     F2V 71 0
44 HD 64685 PM* 07 55 31.4332576416 +08 51 46.221276744   6.21 5.80     F3V 66 0
45 * 12 Cnc * 08 08 42.4456801752 +13 38 27.307392288   6.712 6.242     F3V 60 0
46 * 30 Lyn PM* 08 20 26.0598825840 +57 44 35.806402284   6.272 5.877     F4V 66 0
47 * 1 Hya SB* 08 24 35.0141853312 -03 45 04.472972064 6.01 6.07 5.61     F6V 149 1
48 HD 72943 * 08 36 07.7139542016 +15 18 49.075717464 6.710 6.650 6.330     F0IV 56 0
49 NGC 2632 OpC 08 39 58.4 +19 36 33           ~ 1733 0
50 Cl* NGC 2632 S 94 * 08 39 59.1479887032 +19 40 08.277372048   10.20 9.95     F3V 13 0
51 BD+20 2161 * 08 40 15.3496208088 +19 59 39.483035628   9.11 8.81     F2V 67 0
52 BD+20 2170 * 08 40 26.1405874128 +19 41 11.315709132   9.79 9.45     F5V 74 0
53 IC 2391 OpC 08 41 17.5 -53 03 00           ~ 871 0
54 CD-52 2501 * 08 42 12.2935097520 -53 06 03.797278668           F5V 41 0
55 HD 76143 PM* 08 50 34.8161379696 -66 47 34.739009484   5.741 5.329     F5IV 47 0
56 * b UMa * 08 53 22.5577646328 +61 57 44.158155984 6.150 6.030 5.740     F2III 53 0
57 * omi02 Cnc PM* 08 57 35.1996769392 +15 34 52.625733024   5.892 5.677     F0IV 77 0
58 * b02 Car PM* 08 59 24.1816749896 -59 05 01.362386263   5.58 5.16     F4V 86 0
59 HD 77601 * 09 05 24.0948595656 +48 31 49.136043828   6.40 5.95     F6IIIn 45 0
60 * k Vel * 09 15 45.0797665800 -37 24 47.317883724 5.17 5.07 4.62 4.24 3.96 F3/5V 83 0
61 * iot Cha PM* 09 24 09.2243584872 -80 47 12.757529220   5.81 5.36     F3/5III/V 58 0
62 * tau01 Hya SB* 09 29 08.9313661104 -02 46 08.182035516   5.06 4.60     F5V 201 0
63 * 42 Lyn * 09 38 21.7763861136 +40 14 23.255977236   5.497 5.276     F0V 58 0
64 HD 83962 ** 09 44 36.5486280720 +64 59 02.788920024 6.640 6.600 6.210     F3Vn 55 0
65 HD 84607 PM* 09 46 23.6104785936 +01 47 08.116038312   5.978 5.640     F0/2IV 63 0
66 HD 88215 SB* 10 10 05.8863164376 -12 48 57.323480256   5.644 5.296     F3V 103 0
67 * eps Sex PM* 10 17 37.8025445140 -08 04 08.087235049   5.559 5.240     F0IV 108 0
68 HD 89569 PM* 10 18 37.9085291952 -56 06 37.417005216   6.29 5.80     F6V 70 0
69 * 40 Leo dS* 10 19 44.1672125464 +19 28 15.285966538   5.24   4.5   F6IV-V 288 0
70 * I Car V* 10 24 23.7055275402 -74 01 53.799900604 4.35 4.36 4.01 3.67 3.48 F3V 143 0
71 HD 89571 ** 10 29 41.6296586538 +84 15 06.948854815 5.800 5.740 5.510     A9V 42 0
72 HD 90089 PM* 10 31 04.7079248136 +82 33 31.146280416   5.622 5.252     F4VkF2mF2 155 0
73 V* V557 Car BY* 10 42 41.5146144624 -64 21 04.333829688   11.26 12.03     G2V 71 0
74 IC 2602 OpC 10 42 55.9 -64 25 22           ~ 735 0
75 HD 308012 * 10 46 28.7870310120 -64 07 57.570933396   10.4 9.9     F8 46 0
76 * chi01 Hya ** 11 05 19.9025488416 -27 17 37.046751540   5.281 4.912 6.50   F3IV/V 96 0
77 * 80 Leo gD* 11 25 50.0566217880 +03 51 36.229759272   6.687 6.354     F2IVnn 62 0
78 * 89 Leo PM* 11 34 21.9489030480 +03 03 36.593787600   6.23   5.5   F5.5V 173 0
79 * alf Crv PM* 12 08 24.8172764085 -24 43 43.952148016   4.33 4.01     F1V 202 0
80 HD 106022 Em* 12 12 01.0165142760 +28 32 10.727707956   6.859 6.457     F3V 62 0
81 HD 107326 PM* 12 20 17.7523032840 +26 00 06.748402824   6.45 6.10     F0IV 93 0
82 * 18 Com * 12 29 27.0424033224 +24 06 32.122207044   5.898 5.468     F5IV 135 1
83 * eta Crv PM* 12 32 04.2264018482 -16 11 45.618615379   4.658 4.294     F2V 353 0
84 HD 109141 PM* 12 32 35.9987021376 -13 51 32.784179616   6.094 5.726     F2V(n) 56 0
85 HD 109238 * 12 33 22.2465760896 -19 47 32.945772912   6.548 6.254     F0IV/V 41 0
86 HD 110385 PM* 12 41 49.3927871568 -19 45 32.740951464   6.42 6.03     F2V 61 0
87 HD 110834 * 12 44 27.0991819848 +44 06 10.821539340   6.796 6.335     F6IVn 65 0
88 * 31 Com Ro* 12 51 41.9201696640 +27 32 26.565016812 5.81 5.61 4.94 4.39 4.04 G0IIIp 443 1
89 * 8 Dra gD* 12 55 28.5485641728 +65 26 18.507128532   5.516 5.225     F3IV 100 0
90 * alf Com A PM* 13 09 59.285492 +17 31 45.85645   5.25 4.80     F5V 247 0
91 HD 115810 * 13 19 04.2512105808 +35 07 40.731791772   6.26 6.02     A7IV 56 1
92 * 66 Vir PM* 13 24 33.2485660488 -05 09 50.404470804   6.167 5.749     K2V 87 0
93 HD 118889 ** 13 39 34.61613 +10 44 46.5827   5.91 5.58     F0V 162 0
94 * i Cen SB* 13 45 41.2439386102 -33 02 37.381099823 4.61 4.61 4.23 3.90 3.69 F2V 173 0
95 * tau Boo PM* 13 47 15.7381720026 +17 27 24.809555600 5.02 4.98 4.49 4.09 3.85 F7IV-V 1049 1
96 * eta Boo SB* 13 54 41.07892 +18 23 51.7946 3.440 3.250 2.680 2.24 1.95 G0IV 733 0
97 * 48 Hya PM* 14 00 00.1207098672 -25 00 37.456449156   6.25 5.77     F6V 78 0
98 * iot Vir PM* 14 16 00.8682760805 -06 00 01.969483331 4.64 4.60 4.08     F7III 372 0
99 HD 124780 * 14 16 18.3385632576 -33 14 28.765402152   6.845 6.564     F0V 42 0
100 HD 127821 PM* 14 30 46.0701500520 +63 11 08.830919544       5.8   F4IV 88 0
101 * 26 Boo PM* 14 32 32.5421471304 +22 15 36.203742792   6.263 5.897     F2IV 92 0
102 HD 129153 PM* 14 40 42.3928801560 +13 32 03.562108152   6.152 5.925     F0V 68 0
103 * mu. Vir PM* 14 43 03.6239867612 -05 39 29.524956308 4.25 4.26 3.88 3.48 3.26 F2V 239 0
104 * m Hya ** 14 46 00.07998 -25 26 35.4355           F0VSr+G1V 76 0
105 * 16 Lib PM* 14 57 10.9988855472 -04 20 47.251261752 4.86 4.81 4.49 4.17 4.00 F2V 135 0
106 HD 136751 PM* 15 20 41.6800702416 +44 26 03.759263880   6.495 6.140     F3V 65 0
107 HD 136359 PM* 15 23 10.5035736792 -60 39 25.812143568   6.119 5.651     F5V 60 0
108 * del Ser B PM* 15 34 48.1751809872 +10 32 15.909991116   5.38 5.13     F0IV 64 0
109 * tau05 Ser PM* 15 36 29.2396274568 +16 07 08.703225048   6.255 5.926     F3V 55 0
110 * g Lup PM* 15 41 11.3768069149 -44 39 40.341696305   5.036 4.633     F4V 212 0
111 * lam CrB PM* 15 55 47.5872829824 +37 56 49.044936768   5.770 5.424     F2IV-V 111 0
112 V* CL Dra dS* 15 57 47.4406627440 +54 44 59.149579992   5.22 4.96     F1IVab 120 0
113 * eta UMi PM* 16 17 30.2702509656 +75 45 19.235082204   5.32   4.7   F5V 91 0
114 HD 147365 PM* 16 19 55.1422052928 +39 42 30.900428748 5.860 5.880 5.480     F4V 98 0
115 * sig Ser PM* 16 22 04.3482156624 +01 01 44.556632832   5.15 4.82     F1IV 153 0
116 * 14 Oph PM* 16 41 42.4819345392 +01 10 52.431236076   6.045 5.724     F2V 72 0
117 HD 151613 SB* 16 45 17.8614916416 +56 46 54.839965656   5.199 4.837     F2V 127 0
118 * c Her ** 17 08 02.0616892056 +35 56 06.679215960   5.70 5.39     kA5hF0VmF2 156 0
119 HD 156295 PM* 17 12 32.5799450400 +62 52 27.605492292   5.737 5.540     A7V 58 0
120 * 58 Oph PM* 17 43 25.7935382141 -21 40 59.498912759   5.313 4.861     F5V 160 0
121 IC 4665 53 * 17 45 41.2380392880 +05 33 44.377719192   11.93 11.41   10.767 G5 29 0
122 IC 4665 OpC 17 46 04.0 +05 36 54           ~ 407 0
123 Cl* IC 4665 P 32 * 17 46 16.3660572696 +05 33 33.131636280   12.99 12.57     ~ 7 0
124 Cl* IC 4665 P 35 * 17 46 19.6498730520 +05 34 06.538548432   12.09 11.609   11.022 A9 12 0
125 CD-34 12185 * 17 52 54.5436754824 -34 46 25.861436004   11.27 10.81     ~ 17 0
126 CPD-34 7283 * 17 53 33.0589210920 -34 44 59.541452376   10.65 10.40 10.13   F2V 18 0
127 NGC 6475 OpC 17 53 44.1 -34 49 36           ~ 413 0
128 * zet Ser PM* 18 00 29.0100539320 -03 41 24.977568563   4.982 4.616     F2V 203 0
129 V* V831 Her dS* 18 04 40.2109179456 +23 56 31.266219408   6.632 6.335     F0IV-V 55 0
130 HD 171834 gD* 18 36 39.0746705736 +06 40 18.498612108   5.786 5.425     F3V 119 0
131 HD 173417 PM* 18 43 51.5918763792 +31 55 35.808019104   6.026 5.682     F1III-IV 59 0
132 * 110 Her PM* 18 45 39.7256792847 +20 32 46.713086264 4.66 4.65 4.19 3.80 3.54 F5.5IV-V 427 0
133 HD 175824 PM* 18 54 47.1269593464 +48 51 33.852890016   6.274 5.836     F3III 62 0
134 HD 175317 PM* 18 55 31.0053872592 -16 22 35.888206980   5.985 5.546     F5V 122 0
135 * del Aql ** 19 25 29.90139 +03 06 53.2061 3.72 3.68 3.36 3.11 2.95 F1IV-V(n) 247 0
136 * 42 Aql PM* 19 37 47.3178819696 -04 38 51.505017792   6.07 5.68     F5Vm 84 0
137 * e02 Sgr ** 19 42 31.1329901640 -16 07 26.392911168   5.362 5.045     F3IV/V 72 0
138 * 51 Aql * 19 50 46.7838182160 -10 45 48.633459876   5.77 5.39     F5VFe-1CH-0.7 91 0
139 HD 189245 PM* 20 00 20.2493681318 -33 42 12.424573369   6.15 5.66     F7V 119 0
140 * 16 Vul ** 20 02 01.43152 +24 56 16.9534       6.71   F2III 94 0
141 * psi Cap PM* 20 46 05.7329952443 -25 16 15.233491015   4.538 4.122     F5V 230 0
142 HD 199260 PM* 20 56 47.3316655128 -26 17 46.960329480   6.20 5.70     F6V 131 0
143 HD 201636 PM* 21 06 23.3019303168 +71 25 54.472096488   6.253 5.877     F3IV 44 0
144 HD 203925 * 21 24 34.0054794936 +26 10 28.411226472   5.967 5.658     A8III 58 0
145 * 37 Cap PM* 21 34 51.0522316584 -20 05 03.338901816   6.096 5.696     F5VFe-0.8CH-0.4 74 0
146 V* NZ Peg RR? 21 39 01.1887179552 +20 15 55.623301164   6.065 5.762     F1Vnn 76 0
147 * mu. Cap PM* 21 53 17.7704445429 -13 33 06.366703913   5.45 5.08     F2V 112 0
148 * pi. Peg RG* 22 09 59.2430193207 +33 10 41.600399246 4.93 4.75 4.29 3.90 3.63 F5II-III_sh 140 0
149 * tau PsA PM* 22 10 08.7801946925 -32 32 54.270294310   5.40 4.92     F6V 175 0
150 * zet01 Aqr PM* 22 28 49.8864208040 -00 01 13.961900362   4.89 4.49     F2.5IV-V 132 0
151 * ups Aqr PM* 22 34 41.6357860992 -20 42 29.576916972   5.637 5.203     F7V 148 0
152 * phi Gru PM* 23 18 09.8840454696 -40 49 27.703073964   5.952 5.537     F4V 67 0
153 * ups Peg PM* 23 25 22.7828725585 +23 24 14.762916815 5.15 5.01 4.40 3.86 3.54 F8III 263 0

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