2003A&A...410..937D

Query : 2003A&A...410..937D

2003A&A...410..937D - Astronomy and Astrophysics, volume 410937-942 (2003/11-2)

Observational constraints for lithium depletion before the RGB.

DE LAVERNY P., DO NASCIMENTO J.D.Jr, LEBRE A. and DE MEDEIROS J.R.

Abstract (from CDS):

Precise Li abundances are determined for 54 giant stars mostly evolving across the Hertzsprung gap. We combine these data with rotational velocity and with information related to the deepening of the convective zone of the stars to analyse their link to Li dilution in the referred spectral region. A sudden decline in Li abundance paralleling the one already established in rotation is quite clear. Following similar results for other stellar luminosity classes and spectral regions, there is no linear relation between Li abundance and rotation, in spite of the fact that most of the fast rotators present high Li content. The effects of convection in driving the Li dilution is also quite clear. Stars with high Li content are mostly those with an undeveloped convective zone, whereas stars with a developed convective zone present clear sign of Li dilution.

Abstract Copyright: ∼

Journal keyword(s): stars: abundances - stars: evolution - stars: interiors - stars: late-type - stars: rotation

Simbad objects: 54

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Number of rows : 54
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 * 86 Peg RG* 00 05 41.9616132456 +13 23 46.565281644   6.439 5.537     G5III 79 0
2 HD 895 ** 00 13 23.9212127 +26 59 15.167019   6.952 6.277     F8V 86 1
3 * rho And PM* 00 21 07.2687391968 +37 58 06.979645056   5.60 5.18     F5IV-V 140 0
4 * psi03 Psc * 01 09 49.2008972448 +19 39 30.264861132   6.263 5.562     F9IIIa 136 0
5 * tau Per SB* 02 54 15.4777208304 +52 45 44.882735292 5.17 4.71 3.96 3.33 2.89 G8III+A7V 175 0
6 * 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
7 * 48 Gem * 07 12 26.3762241744 +24 07 42.938002164 6.30 6.21 5.85     F5III-IV 77 0
8 * 82 Gem ** 07 48 33.6390438 +23 08 27.524360 7.010 6.76 6.21     K0III+A0IV: 86 0
9 HD 65448 SB* 08 02 30.8037529008 +63 05 25.220208732   6.75 6.07     G1III 44 0
10 * omi UMa PM* 08 30 15.8701566400 +60 43 05.405606188 4.79 4.27 3.42 2.76 2.31 G5III: 271 1
11 * 35 Cnc RG* 08 35 19.4461296744 +19 35 24.230563692   7.248 6.558     G0III 150 0
12 * 46 Cnc * 08 45 21.4239339336 +30 41 51.900443376   7.055 6.119     G5III 59 0
13 * eps Hya ** 08 46 46.51223 +06 25 07.6855 4.43 4.06 3.38 2.78 2.39 G1III+A8V 267 0
14 * 79 Cnc ** 09 10 20.8583009088 +21 59 47.099412744   6.897 6.011     G5III 48 0
15 HD 81025 ** 09 24 55.67898 +51 34 26.0255   7.142 6.368     G2III 50 0
16 * d UMa RS* 09 34 28.8594727848 +69 49 49.226541888 5.67 5.34 4.57 3.91 3.50 G5III-IV 315 0
17 HD 85945 PM* 09 57 13.6116423888 +57 25 05.538101952   6.854 5.959     G6III:Fe-0.5 52 0
18 HD 92787 PM* 10 43 32.8901986032 +46 12 13.947275952   5.51   5.0   F5III 99 0
19 * 60 UMa SB* 11 38 33.5147752944 +46 50 03.170992560   6.457 6.076     F5IIIs 48 0
20 * 12 Com SB* 12 22 30.3113907816 +25 50 46.167660348 5.56 5.30 4.81 4.34 4.01 F6III+A3V 196 0
21 * 18 Com * 12 29 27.0424033224 +24 06 32.122207044   5.898 5.468     F5IV 135 1
22 * 31 Com Ro* 12 51 41.9201696640 +27 32 26.565016812 5.81 5.61 4.94 4.39 4.04 G0IIIp 443 1
23 HD 119458 SB* 13 42 43.4296862592 +34 59 20.474475072   6.82 5.96     G5III-IIIbFe-0.5 56 0
24 * 7 Boo * 13 53 12.9300854664 +17 55 58.327270932   6.551 5.709     G5III 74 0
25 * 5 Ser PM* 15 19 18.7974409923 +01 45 55.466382064   5.60   4.8   F8IV 355 0
26 HD 140438 ** 15 43 10.5393553130 +13 40 03.569048356 7.890 7.380 6.500     G5III 70 0
27 * eps UMi RS* 16 45 58.2436042536 +82 02 14.129823444   5.109 4.212     G5III 218 0
28 HD 151627 SB* 16 48 08.8879805400 +13 35 25.021546584   7.257 6.379     G5III 34 0
29 * 56 Her * 16 55 02.1610334232 +25 43 50.450186316   6.993 6.064     G5III 60 0
30 HD 155646 PM* 17 12 54.3442639392 +00 21 07.306238592   7.137 6.643     F6V 116 0
31 * alf Her B SB* 17 14 39.1724224693 +14 23 24.008038035   6.030 5.322     G5III+F2V: 138 0
32 HD 157358 SB* 17 21 31.2420461472 +28 45 29.103157116   7.123 6.397     G0IVHdel-1 56 0
33 HD 159026 * 17 30 40.2088708344 +38 52 55.935116436   6.929 6.431     F6IVn 43 0
34 HD 160365 RG* 17 38 57.8551898904 +13 19 45.311464560   6.678 6.123     F6III 96 0
35 * 84 Her PM* 17 43 21.5645208624 +24 19 40.156969404   6.394 5.729     G2IIIb 156 0
36 * d Ser ** 18 27 12.50775 +00 11 45.9912           A0Vs+G:III 130 0
37 HD 173920 * 18 44 55.3992039816 +54 53 49.864895556   7.088 6.259     G5III 40 0
38 * 113 Her SB* 18 54 44.8849895400 +22 38 42.271489464 5.88 5.38 4.60 3.96 3.50 G8III+:+A0.5 101 0
39 HD 182900 PM* 19 26 24.1347183384 +13 01 25.691102256   6.211 5.754     F6III 81 0
40 * alf Sge * 19 40 05.7913315848 +18 00 50.006621484 5.59 5.16 4.38 3.79 3.40 G1II 212 0
41 HD 200039 PM* 20 54 44.3512549872 +75 55 32.061148500   6.939 5.988     G5III 39 0
42 HD 200253 * 21 01 12.8647634688 +36 01 33.642578532   7.000 5.997     G5III 31 0
43 * alf Equ SB* 21 15 49.4371672506 +05 14 52.411028661   4.446 3.933     G6IV+B9.5V 162 0
44 HD 203574 * 21 20 33.4472286024 +60 45 23.067444636   7.113 6.104     G5III 37 0
45 HD 203842 PM* 21 24 24.5637219312 +10 10 27.197570460   6.792 6.317     F5III 65 0
46 HD 208110 HB* 21 53 57.7657361951 +06 51 53.297735149   6.921 6.143     G0IIIs 59 0
47 HD 209149 PM* 22 00 26.6999538792 +33 00 21.337180344 6.890 6.890 6.470     F5III 55 0
48 * 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
49 HD 214558 ** 22 38 17.3968125552 +45 10 58.557035064 7.570 7.130 6.370     G6III+kA5.5:hA8.5:mF0 45 0
50 * ksi Peg PM* 22 46 41.5798542334 +12 10 22.388860108 4.66 4.69 4.20 3.73 3.42 F6V 406 0
51 * pi. Cep ** 23 07 53.85377 +75 23 14.9951 5.67 5.21 4.41     G3III+F3V 184 0
52 * ups Peg PM* 23 25 22.7828725585 +23 24 14.762916815 5.15 5.01 4.40 3.86 3.54 F8III 263 0
53 HD 223346 * 23 48 49.3661205096 +02 12 51.893384976   6.910 6.457     F5V 64 0
54 HD 224342 * 23 57 03.6322799280 +42 39 29.636757036   6.713 6.020     F8III 53 0

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