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

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

2006A&A...446..267R - Astronomy and Astrophysics, volume 446, 267-277 (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 - 2024 		#notes
1 * bet Cas dS* 00 09 10.68518 +59 08 59.2120 2.73 2.61 2.27 1.97 1.77 F2III 530 0
2 * rho Tuc SB* 00 42 28.3718820672 -65 28 04.906571664   5.875 5.381     F6V 61 0
3 HD 4247 PM* 00 44 44.3961246504 -22 00 22.080121164   5.542 5.220     F3VFe-1 91 0
4 * 65 Psc B PM* 00 49 52.8738026040 +27 42 38.911000608 5.990 6.69 6.28 6.12   F4III 54 0
5 * 30 Cet PM* 01 07 46.2087548376 -09 47 07.982452284   6.140 5.705     F5V 62 0
6 HD 6869 ** 01 08 33.83381 -46 40 04.7340           F0V 48 0
7 * psi03 Psc * 01 09 49.2008972448 +19 39 30.264861132   6.263 5.562     F9IIIa 131 0
8 HD 15524 PM* 02 30 32.3533307604 +25 14 06.102857207   6.291 5.879     F6IV 66 0
9 * mu. Cet SB* 02 44 56.5373458591 +10 06 50.921738061   4.57 4.26     A9IIIp 194 0
10 * tau01 Eri PM* 02 45 06.1988006895 -18 34 21.442179919 4.94 4.94 4.46 4.03 3.76 F7V 225 0
11 * rho Ari PM* 02 56 26.1717266513 +18 01 23.665188613   6.02 5.58 5.3   F6V 158 0
12 * kap Ret PM* 03 29 22.6774206459 -62 56 15.104181615   5.10 4.71     F3IV/V 168 1
13 * tau06 Eri PM* 03 46 50.8873186498 -23 14 59.002090709   4.65 4.20     F5IV-V 189 0
14 HD 24357 PM* 03 53 10.0461915456 +17 19 37.507270260   6.294 5.946 5.745 5.545 F4V 186 0
15 HD 25457 TT* 04 02 36.7442719512 -00 16 08.119921152   5.88 5.38     F7V 265 0
16 HD 25621 PM* 04 04 09.8751899184 +02 49 37.019733024   5.86   5.0   F6V 138 0
17 HD 22701 PM* 04 10 01.6443399480 +86 37 34.100362272 6.220 6.220   5.6   F5IV 44 0
18 * 58 Tau dS* 04 20 36.3103641648 +15 05 43.630164636   5.475 5.242 5.126 4.999 F0IV-V 196 0
19 * 85 Tau PM* 04 31 51.7588453752 +15 51 05.846138784   6.342 5.998 5.799 5.604 F1.5Vn 127 0
20 * m Per * 04 33 24.9030370296 +43 03 50.015366964   6.469 6.078     F0V 52 0
21 * alf Cae PM* 04 40 33.7125133631 -41 51 49.504549835 4.79 4.79 4.45 4.11 3.90 F2V 126 0
22 * bet Cae PM* 04 42 03.4822983552 -37 08 39.588865224   5.42 5.05     F3IV 97 0
23 HD 30034 PM* 04 44 25.8285113424 +11 08 46.083452208   5.638 5.379 5.230 5.082 F0V 124 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 571 0
25 HD 33167 PM* 05 10 42.9204964200 +46 57 43.456807404       5.4   F5V 81 0
26 * 111 Tau BY* 05 24 25.4632701888 +17 23 00.726415944   5.52   4.7   F8V 339 0
27 * 122 Tau PM* 05 37 03.7355706744 +17 02 25.177772616   5.775 5.525     F0V 93 0
28 * 39 Aur PM* 06 05 03.3846976704 +42 58 53.888575152       5.7   F3V 53 0
29 * k Ori PM* 06 16 26.6191067712 +12 16 19.787639592   5.46   4.8   F5V 135 0
30 HD 44497 PM* 06 22 36.3924256056 +12 34 12.853157052 6.350 6.300 6.000     F0III 44 0
31 HD 46273 ** 06 29 49.06454 -50 14 20.6831           F2V 70 0
32 * ksi Gem PM* 06 45 17.3644854477 +12 53 44.141855267 3.85 3.79 3.36 2.97 2.74 F5IV-V 218 0
33 * pi. CMa PM* 06 55 37.4304387192 -20 08 11.388856308   5.027 4.664     F1.5V 80 0
34 * 48 Gem * 07 12 26.3762241744 +24 07 42.938002164 6.30 6.21 5.85     F5III-IV 73 0
35 * del Gem SB* 07 20 07.3745658105 +21 58 56.294578663 3.91 3.87 3.53 3.17 2.98 F2VkF0mF0 243 0
36 * 59 Gem * 07 24 33.4531218504 +27 38 16.281508164   6.110 5.759     F0:III: 40 0
37 * 61 Gem ** 07 26 56.3284417224 +20 15 27.197178912   6.236 5.935     F2Vn 49 0
38 * rho Gem PM* 07 29 06.71887 +31 47 04.3773 4.48 4.50 4.18 3.86 3.67 F1V 326 0
39 * del02 CMi * 07 33 11.6657432976 +03 17 25.365062508   5.895 5.571     F1III-IV 65 0
40 HD 60555 * 07 33 52.3633899264 -28 34 03.825695820   7.06 6.76     A5/7V+(F) 28 0
41 HD 61035 * 07 38 14.3693204256 +24 21 37.595759904 6.670 6.690 6.370     F0 42 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 106 0
43 * 4 Pup * 07 45 56.8695645744 -14 33 49.698704304   5.342 5.026     F2V 66 0
44 HD 64685 PM* 07 55 31.4332576416 +08 51 46.221276744   6.21 5.80     F3V 60 0
45 * 12 Cnc * 08 08 42.4456801752 +13 38 27.307392288   6.712 6.242     F3V 55 0
46 * 30 Lyn PM* 08 20 26.0598825840 +57 44 35.806402284   6.272 5.877     F4V 61 0
47 * 1 Hya SB* 08 24 35.0141853312 -03 45 04.472972064 6.01 6.07 5.61     F6V 141 1
48 HD 72943 * 08 36 07.7139542016 +15 18 49.075717464 6.710 6.650 6.330     F0IV 51 0
49 Cl* NGC 2632 S 94 * 08 39 59.1479887032 +19 40 08.277372048   10.20 9.95     F3V 12 0
50 NGC 2632 OpC 08 40 13.0 +19 37 16           ~ 1566 0
51 BD+20 2161 * 08 40 15.3496208088 +19 59 39.483035628   9.11 8.81     F2V 55 0
52 BD+20 2170 * 08 40 26.1405874128 +19 41 11.315709132   9.79 9.45     ~ 62 0
53 IC 2391 OpC 08 41 10.1 -52 59 28           ~ 822 0
54 CD-52 2501 * 08 42 12.2935097520 -53 06 03.797278668           F5V 36 0
55 HD 76143 PM* 08 50 34.8161379696 -66 47 34.739009484   5.741 5.329     F5IV 42 0
56 * b UMa * 08 53 22.5577646328 +61 57 44.158155984 6.150 6.030 5.740     F2III 47 0
57 * omi02 Cnc PM* 08 57 35.1996769392 +15 34 52.625733024   5.892 5.677     F0IV 64 0
58 * b02 Car PM* 08 59 24.1816749896 -59 05 01.362386263   5.58 5.16     F4V 81 0
59 HD 77601 * 09 05 24.0948595656 +48 31 49.136043828   6.40 5.95     F6IIIn 41 0
60 * k Vel * 09 15 45.0797665800 -37 24 47.317883724 5.17 5.07 4.62 4.24 3.96 F3/5V 76 0
61 * iot Cha PM* 09 24 09.2243584872 -80 47 12.757529220   5.81 5.36     F3/5III/V 53 0
62 * tau01 Hya SB* 09 29 08.9313661104 -02 46 08.182035516   5.06 4.60     F5V 189 0
63 * 42 Lyn * 09 38 21.7763861136 +40 14 23.255977236   5.497 5.276     F0V 52 0
64 HD 83962 ** 09 44 36.5486280720 +64 59 02.788920024 6.640 6.600 6.210     F3Vn 52 0
65 HD 84607 PM* 09 46 23.6104785936 +01 47 08.116038312   5.978 5.640     F0/2IV 55 0
66 HD 88215 SB* 10 10 05.8863164376 -12 48 57.323480256   5.644 5.296     F3V 98 0
67 * eps Sex PM* 10 17 37.8025445140 -08 04 08.087235049   5.559 5.240     F0IV 103 0
68 HD 89569 PM* 10 18 37.9085291952 -56 06 37.417005216   6.29 5.80     F6V 62 0
69 * 40 Leo dS* 10 19 44.1672125464 +19 28 15.285966538   5.24   4.5   F6IV-V 268 0
70 * I Car V* 10 24 23.7055275402 -74 01 53.799900604 4.35 4.36 4.01 3.67 3.48 F3V 130 0
71 HD 89571 ** 10 29 41.6296586538 +84 15 06.948854815 5.800 5.740 5.510     A9V 38 0
72 HD 90089 PM* 10 31 04.7079248136 +82 33 31.146280416   5.622 5.252     F4VkF2mF2 139 0
73 IC 2602 OpC 10 42 27.1 -64 25 34           ~ 675 0
74 V* V557 Car BY* 10 42 41.5146144624 -64 21 04.333829688   11.26 12.03     G2V 65 0
75 HD 308012 * 10 46 28.7870310120 -64 07 57.570933396   10.4 9.9     F8 37 0
76 * chi01 Hya ** 11 05 19.9025488416 -27 17 37.046751540   5.281 4.912 6.50   F3IV/V 90 0
77 * 80 Leo gD* 11 25 50.0566217880 +03 51 36.229759272   6.687 6.354     F2IVnn 58 0
78 * 89 Leo PM* 11 34 21.9489030480 +03 03 36.593787600   6.23   5.5   F5.5V 162 0
79 * alf Crv PM* 12 08 24.8172764085 -24 43 43.952148016   4.33 4.01     F1V 180 0
80 HD 106022 PM* 12 12 01.0165142760 +28 32 10.727707956   6.859 6.457     F5V 57 0
81 HD 107326 PM* 12 20 17.7523032840 +26 00 06.748402824   6.45 6.10     F0IV 90 0
82 * 18 Com * 12 29 27.0424033224 +24 06 32.122207044   5.898 5.468     F5IV 130 1
83 * eta Crv PM* 12 32 04.2264018482 -16 11 45.618615379   4.658 4.294     F2V 318 0
84 HD 109141 PM* 12 32 35.9987021376 -13 51 32.784179616   6.094 5.726     F2V(n) 51 0
85 HD 109238 * 12 33 22.2465760896 -19 47 32.945772912   6.548 6.254     F0IV/V 38 0
86 HD 110385 PM* 12 41 49.3927871568 -19 45 32.740951464   6.42 6.03     F2V 56 0
87 HD 110834 * 12 44 27.0991819848 +44 06 10.821539340   6.796 6.335     F6IVn 61 0
88 * 31 Com Ro* 12 51 41.9201696640 +27 32 26.565016812 5.81 5.61 4.94 4.39 4.04 G0IIIp 431 1
89 * 8 Dra gD* 12 55 28.5485641728 +65 26 18.507128532   5.516 5.225     F3IV 94 0
90 * alf Com A PM* 13 09 59.285492 +17 31 45.85645   5.25 4.80     F5V 242 0
91 HD 115810 * 13 19 04.2512105808 +35 07 40.731791772   6.26 6.02     A7IV 53 1
92 * 66 Vir PM* 13 24 33.2485660488 -05 09 50.404470804   6.167 5.749     K2V 79 0
93 HD 118889 ** 13 39 34.61613 +10 44 46.5827   5.91 5.58     F0V 158 0
94 * i Cen SB* 13 45 41.2439386102 -33 02 37.381099823 4.61 4.61 4.23 3.90 3.69 F2V 164 0
95 * tau Boo Ro* 13 47 15.7381720026 +17 27 24.809555600 5.02 4.98 4.49 4.09 3.85 F7IV-V 988 1
96 * eta Boo SB* 13 54 41.07892 +18 23 51.7946 3.440 3.250 2.680 2.24 1.95 G0IV 704 0
97 * 48 Hya PM* 14 00 00.1207098672 -25 00 37.456449156   6.25 5.77     F6V 73 0
98 * iot Vir PM* 14 16 00.8682760805 -06 00 01.969483331 4.64 4.60 4.08     F7III 357 0
99 HD 124780 * 14 16 18.3385632576 -33 14 28.765402152   6.845 6.564     F0V 38 0
100 HD 127821 PM* 14 30 46.0701500520 +63 11 08.830919544       5.8   F4IV 81 0
101 * 26 Boo PM* 14 32 32.5421471304 +22 15 36.203742792   6.263 5.897     F2IV 86 0
102 HD 129153 PM* 14 40 42.3928801560 +13 32 03.562108152   6.152 5.925     F0V 62 0
103 * mu. Vir PM* 14 43 03.6239867612 -05 39 29.524956308 4.25 4.26 3.88 3.48 3.26 F2V 227 0
104 * m Hya ** 14 46 00.07998 -25 26 35.4355           F0VSr+G1V 70 0
105 * 16 Lib PM* 14 57 10.9988855472 -04 20 47.251261752 4.86 4.81 4.49 4.17 4.00 F2V 127 0
106 HD 136751 PM* 15 20 41.6800702416 +44 26 03.759263880   6.495 6.140     F3V 59 0
107 HD 136359 PM* 15 23 10.5035736792 -60 39 25.812143568   6.119 5.651     F5V 52 0
108 * del Ser B PM* 15 34 48.1751809872 +10 32 15.909991116   5.38 5.13     F0IV 62 0
109 * tau05 Ser PM* 15 36 29.2396274568 +16 07 08.703225048   6.255 5.926     F3V 48 0
110 * g Lup PM* 15 41 11.3768069149 -44 39 40.341696305   5.036 4.633     F3/5V 202 0
111 * lam CrB PM* 15 55 47.5872829824 +37 56 49.044936768   5.770 5.424     F2IV-V 104 0
112 V* CL Dra dS* 15 57 47.4406627440 +54 44 59.149579992   9.27 8.75 6.47   F1IVab 116 0
113 * eta UMi PM* 16 17 30.2702509656 +75 45 19.235082204   5.32   4.7   F5V 84 0
114 HD 147365 PM* 16 19 55.1422052928 +39 42 30.900428748 5.860 5.880 5.480     F4V 91 0
115 * sig Ser PM* 16 22 04.3482156624 +01 01 44.556632832       4.6   A9Ib/II 147 0
116 * 14 Oph PM* 16 41 42.4819345392 +01 10 52.431236076   6.045 5.724     F2V 65 0
117 HD 151613 SB* 16 45 17.8614916416 +56 46 54.839965656   5.199 4.837     F2V 121 0
118 * c Her ** 17 08 02.0616892056 +35 56 06.679215960   5.70 5.39     kA5hF0VmF2 151 0
119 HD 156295 PM* 17 12 32.5799450400 +62 52 27.605492292   5.737 5.540     A7V 51 0
120 * 58 Oph PM* 17 43 25.7935382141 -21 40 59.498912759   5.313 4.861     F5V 146 0
121 IC 4665 53 * 17 45 41.2380392880 +05 33 44.377719192   11.93 11.41   10.767 G5 26 0
122 IC 4665 OpC 17 46 13.0 +05 36 54           ~ 372 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     ~ 13 0
126 CPD-34 7283 * 17 53 33.0589210920 -34 44 59.541452376   10.65 10.40 10.13   F2V 14 0
127 NGC 6475 OpC 17 53 47.3 -34 50 28           ~ 384 0
128 * zet Ser PM* 18 00 29.0100539320 -03 41 24.977568563   4.982 4.616     F2V 193 0
129 V* V831 Her dS* 18 04 40.2109179456 +23 56 31.266219408   6.632 6.335     F0IV-V 52 0
130 HD 171834 gD* 18 36 39.0746705736 +06 40 18.498612108   5.786 5.425     F3V 112 0
131 HD 173417 PM* 18 43 51.5918763792 +31 55 35.808019104   6.026 5.682     F1III-IV 55 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 407 0
133 HD 175824 PM* 18 54 47.1269593464 +48 51 33.852890016   6.274 5.836     F3III 58 0
134 HD 175317 PM* 18 55 31.0053872592 -16 22 35.888206980   5.985 5.546     F5V 116 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) 239 0
136 * 42 Aql PM* 19 37 47.3178819696 -04 38 51.505017792   6.07 5.68     F3IV/V 78 0
137 * e02 Sgr ** 19 42 31.1329901640 -16 07 26.392911168   5.362 5.045     F3IV/V 66 0
138 * 51 Aql * 19 50 46.7838182160 -10 45 48.633459876   5.77 5.39     F5VFe-1CH-0.7 87 0
139 HD 189245 PM* 20 00 20.2493681318 -33 42 12.424573369   6.15 5.66     F7V 110 0
140 * 16 Vul ** 20 02 01.43152 +24 56 16.9534       6.71   F2III 91 0
141 * psi Cap PM* 20 46 05.7329952443 -25 16 15.233491015   4.538 4.122     F5V 216 0
142 HD 199260 PM* 20 56 47.3316655128 -26 17 46.960329480   6.20 5.70     F6V 115 0
143 HD 201636 PM* 21 06 23.3019303168 +71 25 54.472096488   6.253 5.877     F3IV 39 0
144 HD 203925 * 21 24 34.0054794936 +26 10 28.411226472   5.967 5.658     A8III 53 0
145 * 37 Cap PM* 21 34 51.0522316584 -20 05 03.338901816   6.096 5.696     F5VFe-0.8CH-0.4 68 0
146 V* NZ Peg RR? 21 39 01.1887179552 +20 15 55.623301164   6.065 5.762     F1Vnn 71 0
147 * mu. Cap PM* 21 53 17.7704445429 -13 33 06.366703913   5.45 5.08     F2V 105 0
148 * pi. Peg * 22 09 59.2430193207 +33 10 41.600399246 4.93 4.75 4.29 3.90 3.63 F5III 135 0
149 * tau PsA PM* 22 10 08.7801946925 -32 32 54.270294310   5.40 4.92     F6V 153 0
150 * zet01 Aqr PM* 22 28 49.8864208040 -00 01 13.961900362   4.89 4.49     F2IV/V 131 0
151 * ups Aqr PM* 22 34 41.6357860992 -20 42 29.576916972   5.637 5.203     F7V 133 0
152 * phi Gru PM* 23 18 09.8840454696 -40 49 27.703073964   5.952 5.537     F4V 62 0
153 * ups Peg PM* 23 25 22.7828725585 +23 24 14.762916815 5.15 5.01 4.40 3.86 3.54 F8III 255 0

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