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

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

2003A&A...410..937D - Astronomy and Astrophysics, volume 410, 937-942 (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 - 2024 		#notes
1 * 86 Peg * 00 05 41.9616132456 +13 23 46.565281644   6.439 5.537     G5III 69 0
2 HD 895 ** 00 13 23.9129710719 +26 59 14.981407429   6.952 6.277     F8V 81 0
3 * rho And PM* 00 21 07.2687391968 +37 58 06.979645056   5.60 5.18     F5IV-V 131 0
4 * psi03 Psc * 01 09 49.2008972448 +19 39 30.264861132   6.263 5.562     F9IIIa 131 0
5 * tau Per EB* 02 54 15.4777208304 +52 45 44.882735292 5.17 4.71 3.96 3.33 2.89 G8III+A7V 166 0
6 * 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
7 * 48 Gem * 07 12 26.3762241744 +24 07 42.938002164 6.30 6.21 5.85     F5III-IV 73 0
8 * 82 Gem ** 07 48 33.6390438 +23 08 27.524360 7.010 6.76 6.21     K0III+A0IV: 82 0
9 HD 65448 SB* 08 02 30.8037529008 +63 05 25.220208732   6.99 6.40     G1III 38 0
10 * omi UMa PM* 08 30 15.8701566400 +60 43 05.405606188 4.79 4.27 3.42 2.76 2.31 G5III: 253 1
11 * 35 Cnc * 08 35 19.4461296744 +19 35 24.230563692   7.248 6.558     G0III 137 0
12 * 46 Cnc * 08 45 21.4239339336 +30 41 51.900443376   7.055 6.119     G5III 54 0
13 * eps Hya Ro* 08 46 46.51223 +06 25 07.6855 4.43 4.06 3.38 2.78 2.39 G1III+A8V 260 0
14 * 79 Cnc ** 09 10 20.8583009088 +21 59 47.099412744   6.897 6.011     G5III 43 0
15 HD 81025 ** 09 24 55.67898 +51 34 26.0255   7.142 6.368     G2III 45 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 299 0
17 HD 85945 PM* 09 57 13.6116423888 +57 25 05.538101952   6.854 5.959     G6III:Fe-0.5 47 0
18 HD 92787 PM* 10 43 32.8901986032 +46 12 13.947275952   5.51   5.0   F5III 94 0
19 * 60 UMa SB* 11 38 33.5147752944 +46 50 03.170992560   6.457 6.076     F5IIIs 43 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 188 0
21 * 18 Com * 12 29 27.0424033224 +24 06 32.122207044   5.898 5.468     F5IV 130 1
22 * 31 Com Ro* 12 51 41.9201696640 +27 32 26.565016812 5.81 5.61 4.94 4.39 4.04 G0IIIp 431 1
23 HD 119458 SB* 13 42 43.4296862592 +34 59 20.474475072   6.82 5.96     G5III-IIIbFe-0.5 52 0
24 * 7 Boo * 13 53 12.9300854664 +17 55 58.327270932   6.551 5.709     G5III 67 0
25 * 5 Ser Ro* 15 19 18.7974409923 +01 45 55.466382064   5.60   4.8   F8IV 340 0
26 HD 140438 ** 15 43 10.5393553130 +13 40 03.569048356 7.890 7.380 6.500     G5III 66 0
27 * eps UMi RS* 16 45 58.2436042536 +82 02 14.129823444   5.109 4.212     G5III 210 0
28 HD 151627 * 16 48 08.8879805400 +13 35 25.021546584   7.257 6.379     G5III 30 0
29 * 56 Her * 16 55 02.1610334232 +25 43 50.450186316   6.993 6.064     G5III 53 0
30 HD 155646 PM* 17 12 54.3442639392 +00 21 07.306238592   7.137 6.643     F6V 111 0
31 * alf Her B SB* 17 14 39.1724224693 +14 23 24.008038035   6.030 5.322     G5III+F2V: 136 1
32 HD 157358 SB* 17 21 31.2420461472 +28 45 29.103157116   7.123 6.397     G0IVHdel-1 49 0
33 HD 159026 * 17 30 40.2088708344 +38 52 55.935116436   6.929 6.431     F6IVn 39 0
34 HD 160365 PM* 17 38 57.8551898904 +13 19 45.311464560   6.678 6.123     F6III 90 0
35 * 84 Her PM* 17 43 21.5645208624 +24 19 40.156969404   6.394 5.729     G2IIIb 145 0
36 * d Ser ** 18 27 12.50775 +00 11 45.9912           A0Vs+G:III 125 0
37 HD 173920 * 18 44 55.3992039816 +54 53 49.864895556   7.088 6.259     G5III 37 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 94 0
39 HD 182900 PM* 19 26 24.1347183384 +13 01 25.691102256   6.211 5.754     F6III 76 0
40 * alf Sge * 19 40 05.7913315848 +18 00 50.006621484 5.59 5.16 4.38 3.79 3.40 G1II 205 0
41 HD 200039 PM* 20 54 44.3512549872 +75 55 32.061148500   6.939 5.988     G5III 33 0
42 HD 200253 * 21 01 12.8647634688 +36 01 33.642578532   7.000 5.997     G5III 28 0
43 * alf Equ SB* 21 15 49.4371672506 +05 14 52.411028661   4.446 3.933     G6IV+B9.5V 150 0
44 HD 203574 * 21 20 33.4472286024 +60 45 23.067444636   7.113 6.104     G5III 29 0
45 HD 203842 PM* 21 24 24.5637219312 +10 10 27.197570460   6.792 6.317     F5III 63 0
46 HD 208110 HB* 21 53 57.7657361951 +06 51 53.297735149   6.921 6.143     G0IIIs 53 0
47 HD 209149 PM* 22 00 26.6999538792 +33 00 21.337180344 6.890 6.890 6.470     F5III 49 0
48 * pi. Peg * 22 09 59.2430193207 +33 10 41.600399246 4.93 4.75 4.29 3.90 3.63 F5III 135 0
49 HD 214558 ** 22 38 17.3968125552 +45 10 58.557035064 7.570 7.130 6.370     G6III+kA5.5:hA8.5:mF0 41 0
50 * ksi Peg PM* 22 46 41.5798542334 +12 10 22.388860108 4.66 4.69 4.20 3.73 3.42 F6V 386 0
51 * pi. Cep SB* 23 07 53.85377 +75 23 14.9951 5.67 5.21 4.41     G2III 179 0
52 * ups Peg PM* 23 25 22.7828725585 +23 24 14.762916815 5.15 5.01 4.40 3.86 3.54 F8III 255 0
53 HD 223346 * 23 48 49.3661205096 +02 12 51.893384976   6.910 6.457     F5V 60 0
54 HD 224342 * 23 57 03.6322799280 +42 39 29.636757036   6.713 6.020     F8III 48 0

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