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Query : 2012MNRAS.427...11L |
2012MNRAS.427...11L - Mon. Not. R. Astron. Soc., 427, 11-26 (2012/November-3)
Lithium abundance in atmospheres of F- and G-type supergiants and bright giants.
LYUBIMKOV L.S., LAMBERT D.L., KAMINSKY B.M., PAVLENKO Y.V., POKLAD D.B. and RACHKOVSKAYA T.M.
Abstract (from CDS):
The derived Li abundances are compared with theoretical predictions of 2–15M☉ stars (both rotating and non-rotating). Our results are generally in good agreement with theory. In particular, the absence of detectable lithium for the majority of programme stars is explainable. The comparison suggests that the stars may be separated by mass M into two groups, namely M ≲ 6M☉ and M > 6M☉. All Li-rich giants and supergiants with logε(Li) ≥ 2.0 have masses M < 6M☉; this conclusion follows not only from our work but also from a scrutiny of published data. 11 of 13 stars with logε(Li) = 1.1–1.8, specifically the stars with M < 6M☉, show good agreement with the post-first dredge-up surface abundance logε(Li) ≈ 1.4 predicted for the non-rotating 2–6M☉ stellar models. An absence of Li-rich stars in the range M > 6M☉ agrees with the theoretical prediction that F and G supergiants and giants with M > 6M☉ cannot show detectable lithium.
We note that present theory appears unable to account for the derived Li abundances for some stars, namely for (i) a few relatively low-mass Li-rich giants (M < 6M☉), whose high Li abundances accompanied by rather high rotational velocities or substantial nitrogen excess contradict theoretical predictions; (ii) the relatively high-mass supergiants HR461 and HR8313 (M > 6M☉) with the detected abundances logε = 1.3–1.5. It is possible that the lithium in such stars was synthesized recently.
Abstract Copyright: © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS
Journal keyword(s): stars: abundances - stars: evolution - supergiants
Simbad objects: 58
Number of rows : 58 |
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 | * 36 Psc | ** | 00 16 34.0418564136 | +08 14 24.566106696 | 7.042 | 6.121 | G8II-III | 56 | 0 | |||
2 | HD 3421 | * | 00 37 21.2197453944 | +35 23 58.210707084 | 6.323 | 5.431 | G2Ib-II | 81 | 0 | |||
3 | HD 4362 | * | 00 46 42.4584874152 | +59 34 28.347458772 | 7.463 | 6.410 | G0Ibe | 80 | 0 | |||
4 | HD 9900 | * | 01 38 07.5665016360 | +57 58 39.475310304 | 6.921 | 5.536 | K0II_CN+2 | 69 | 0 | |||
5 | HD 16780 | * | 02 43 01.8568506264 | +48 15 54.878632596 | 8.310 | 7.430 | 6.280 | G5II | 25 | 0 | ||
6 | HD 17818 | * | 02 53 21.0706663824 | +48 34 11.848899324 | 8.390 | 7.420 | 6.210 | G8II | 32 | 0 | ||
7 | HD 17905 | * | 02 53 24.3726613608 | +31 38 40.858465488 | 7.12 | 6.60 | F6II-III | 37 | 0 | |||
8 | * nu. Per | * | 03 45 11.6327358410 | +42 34 42.709540671 | 4.50 | 4.22 | 3.80 | 3.40 | 3.13 | F4II | 129 | 0 |
9 | HD 25291 | * | 04 04 27.1629402984 | +59 09 19.832668272 | 6.10 | 5.63 | 5.12 | 4.62 | 4.24 | F0II | 108 | 0 |
10 | HD 25877 | * | 04 09 27.5710891104 | +59 54 29.052740304 | 7.407 | 6.295 | G7II | 58 | 0 | |||
11 | * omi01 Eri | dS* | 04 11 51.9390483214 | -06 50 15.286647564 | 4.357 | 4.026 | F0III | 152 | 0 | |||
12 | * mu. Per | SB* | 04 14 53.8635146524 | +48 24 33.590334394 | 5.75 | 5.12 | 4.16 | 3.38 | 2.83 | G0Ib | 242 | 0 |
13 | HD 27022 | * | 04 20 40.3256358240 | +65 08 25.589310792 | 6.55 | 6.08 | 5.27 | 4.63 | 4.20 | G4III | 154 | 0 |
14 | * bet Cam | * | 05 03 25.0910670105 | +60 26 32.083933247 | 5.57 | 4.95 | 4.02 | 3.33 | 2.86 | G1Ib | 178 | 0 |
15 | HD 32655 | * | 05 06 49.5553255488 | +43 10 28.940916900 | 6.646 | 6.207 | F0IIIa | 56 | 0 | |||
16 | * bet Lep | PM* | 05 28 14.7228880318 | -20 45 33.997988694 | 4.13 | 3.66 | 2.84 | 2.19 | 1.75 | G5II-IIIa: | 239 | 0 |
17 | HD 38713 | * | 05 47 07.8044115888 | -16 14 17.086172172 | 7.058 | 6.157 | G8III | 32 | 0 | |||
18 | * 25 Gem | * | 06 41 20.8975543776 | +28 11 47.904494928 | 7.521 | 6.427 | G5Ib | 92 | 0 | |||
19 | * del CMa | s*y | 07 08 23.4840514 | -26 23 35.518484 | 3.06 | 2.52 | 1.84 | 1.33 | 1.00 | F8Ia | 337 | 0 |
20 | HD 57146 | * | 07 18 51.2737383648 | -26 35 09.081112236 | 6.258 | 5.288 | G2Ib | 80 | 0 | |||
21 | HD 58526 | * | 07 25 51.1999347000 | -05 46 29.862957504 | 6.895 | 5.962 | G3Ib | 64 | 0 | |||
22 | HD 59890 | * | 07 30 42.6019759200 | -30 57 44.209928016 | 6.21 | 5.58 | 4.65 | 3.98 | 3.51 | G2Iab/b | 62 | 0 |
23 | HD 61295 | PM* | 07 39 54.0948913920 | +32 00 35.034156612 | 6.523 | 6.165 | F5III | 57 | 0 | |||
24 | * ksi Pup | * | 07 49 17.6535518440 | -24 51 35.221966694 | 5.72 | 4.56 | 3.30 | 2.43 | 1.88 | G6Ib | 190 | 0 |
25 | * j Pup | * | 07 56 51.5423244834 | -22 52 48.401855869 | 4.900 | 4.184 | F7II | 106 | 0 | |||
26 | * zet Mon | * | 08 08 35.6480975954 | -02 59 01.635577977 | 6.02 | 5.30 | 4.33 | 3.60 | 3.11 | G2Ib | 145 | 0 |
27 | * 55 Cam | Pe* | 08 12 48.7881816720 | +68 28 26.663711052 | 6.352 | 5.329 | G7IIb | 103 | 0 | |||
28 | * 20 Pup | * | 08 13 19.9671571968 | -15 47 17.608829604 | 6.84 | 6.06 | 4.99 | G4Ib-II | 84 | 0 | ||
29 | HD 71115 | * | 08 25 54.7670593176 | +07 33 52.214573088 | 6.051 | 5.122 | G6III-IIIaFe-1.5 | 76 | 0 | |||
30 | * F Hya | * | 08 43 40.3744846779 | -07 14 01.422508229 | 5.441 | 4.625 | G1Ib | 165 | 0 | |||
31 | HD 76494 | * | 08 56 37.0374423504 | +04 14 11.690050164 | 7.128 | 6.131 | G8III | 37 | 0 | |||
32 | * 37 LMi | * | 10 38 43.2128104658 | +31 58 34.463378806 | 5.494 | 4.677 | G2.5IIIa | 156 | 0 | |||
33 | * bet Crv | PM* | 12 34 23.2349224335 | -23 23 48.336778328 | 4.17 | 3.52 | 2.64 | 2.03 | 1.59 | G5IIBa0.3 | 257 | 0 |
34 | HD 119035 | PM* | 13 40 15.5778600264 | +31 00 43.328600784 | 7.17 | 6.20 | G8II-III | 39 | 0 | |||
35 | * 83 Vir | * | 13 44 29.8268293824 | -16 10 44.662210068 | 6.350 | 5.567 | G0II: | 89 | 0 | |||
36 | * alf Boo | RG* | 14 15 39.67207 | +19 10 56.6730 | 2.46 | 1.18 | -0.05 | -1.03 | -1.68 | K1.5IIIFe-0.5 | 2318 | 1 |
37 | HD 142357 | * | 15 53 34.8696799896 | +16 04 29.761652748 | 6.660 | 6.630 | 6.220 | F5.5IV+ | 59 | 1 | ||
38 | * bet Dra | * | 17 30 25.9616959 | +52 18 04.999351 | 4.43 | 3.79 | 2.81 | 2.12 | 1.64 | G2Ib-IIa | 415 | 0 |
39 | HD 161149 | * | 17 43 22.0226907336 | +14 17 42.610199172 | 6.643 | 6.211 | F5III | 74 | 0 | |||
40 | * nu. Her | LP* | 17 58 30.1496073102 | +30 11 21.387652276 | 4.95 | 4.80 | 4.41 | 4.01 | 3.78 | F2II | 180 | 0 |
41 | * d Dra | * | 18 32 34.5225933264 | +57 02 44.145773628 | 5.380 | 4.761 | F8Ib-II | 145 | 0 | |||
42 | HD 172365 | * | 18 39 36.8773335936 | +05 15 51.448369824 | 6.92 | 7.15 | 6.40 | F8II | 129 | 0 | ||
43 | HD 176123 | * | 18 59 26.7781362168 | -18 33 59.166247104 | 7.358 | 6.378 | G3II | 44 | 0 | |||
44 | HD 185018 | * | 19 36 52.4545556280 | +11 16 23.522333484 | 6.834 | 5.975 | G0Ib-II | 69 | 0 | |||
45 | HD 187203 | * | 19 48 30.5141801256 | +10 41 38.749809156 | 8.01 | 7.377 | 6.457 | F8Ib-II | 89 | 0 | ||
46 | * 35 Cyg | SB* | 20 18 39.0719928336 | +34 58 57.973987704 | 6.29 | 5.803 | 5.162 | F6Ib | 133 | 0 | ||
47 | HD 194069 | SB* | 20 22 03.0552303672 | +41 07 55.691984064 | 7.409 | 6.383 | G9Ib-II | 54 | 0 | |||
48 | * gam Cyg | V* | 20 22 13.7018357 | +40 15 24.044963 | 3.44 | 2.90 | 2.23 | 1.74 | 1.40 | F8Ib | 583 | 0 |
49 | * 41 Cyg | V* | 20 29 23.7355334165 | +30 22 06.799052288 | 4.69 | 4.42 | 4.01 | 3.65 | 3.42 | F5Ib-II | 188 | 0 |
50 | * 44 Cyg | * | 20 30 59.2290678096 | +36 56 09.023582544 | 7.93 | 7.160 | 6.216 | 6.90 | 4.64 | F5Ib | 157 | 0 |
51 | * 49 Cyg | ** | 20 41 02.5422151056 | +32 18 26.238680208 | 6.672 | 5.638 | G8IIb | 83 | 0 | |||
52 | * bet Aqr | * | 21 31 33.5320760349 | -05 34 16.229381029 | 4.27 | 3.71 | 2.89 | 2.29 | 1.84 | G0Ib | 447 | 0 |
53 | * 9 Peg | V* | 21 44 30.6958020785 | +17 21 00.062899998 | 6.48 | 5.52 | 4.35 | 3.53 | 2.98 | G5Ib | 267 | 0 |
54 | HD 209693 | * | 22 04 34.5174239880 | +32 56 30.285443256 | 7.436 | 6.370 | G5Ib-II | 34 | 0 | |||
55 | * alf Aqr | * | 22 05 47.0355458275 | -00 19 11.463439527 | 4.65 | 3.90 | 2.94 | 2.27 | 1.76 | G2Ib | 437 | 0 |
56 | HD 216206 | * | 22 50 10.0938802752 | +50 40 36.908660604 | 7.336 | 6.230 | G5Ib-II | 62 | 0 | |||
57 | HD 216756 | PM* | 22 55 02.6473045344 | +37 04 36.582079476 | 6.295 | 5.901 | F4V | 94 | 0 | |||
58 | NAME Galactic Bulge | reg | ~ | ~ | ~ | 4299 | 0 |
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