2005A&A...441.1117L


C.D.S. - SIMBAD4 rel 1.7 - 2020.12.03CET13:16:35

2005A&A...441.1117L - Astronomy and Astrophysics, volume 441, 1117-1127 (2005/10-3)

Long period variables in 47 Tuc: direct evidence for lost mass.

LEBZELTER T. and WOOD P.R.

Abstract (from CDS):

We have identified 22 new variable red giants in 47 Tuc and determined periods for another 8 previously known variables. All red giants redder than V-Ic=1.8 are variable at the limits of our detection threshold, which corresponds to δV≃0.1mag. This colour limit corresponds to a luminosity logL/L=3.15 and it is considerably below the tip of the RGB at logL/L=3.35. Linear non-adiabatic models without mass loss on the giant branch can not reproduce the observed PL laws for the low amplitude pulsators. Models that have undergone mass loss do reproduce the observed PL relations and they show that mass loss of the order of 0.3M occurs along the RGB and AGB. The linear pulsation periods do not agree well with the observed periods of the large amplitude Mira variables, which pulsate in the fundamental mode. The solution to this problem appears to be that the nonlinear pulsation periods in these low mass stars are considerably shorter than the linear pulsation periods due to a rearrangement of stellar structure caused by the pulsation. Both observations and theory show that stars evolve up the RGB and first part of the AGB pulsating in low order overtone modes, then switch to fundamental mode at high luminosities.

Abstract Copyright:

Journal keyword(s): stars: late-type - stars: AGB and post-AGB - stars: oscillations - stars: mass-loss

Nomenclature: Table 1: Cl* NGC 104 LW NN (Nos 1-22).

Simbad objects: 47

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Number of rows : 47

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 Cl* NGC 104 SAW V28 * 00 22 35.8258691627 -72 11 11.298719225   13.45 11.928     ~ 11 0
2 Cl* NGC 104 CHUN 4-230 V* 00 22 58.4242660042 -72 06 56.160349756   13.99 12.36     ~ 21 0
3 Cl* NGC 104 LW 1 V* 00 23 22.3384903907 -72 05 39.898734990     11.83     ~ 4 0
4 2MASS J00232921-7206204 V* 00 23 29.21 -72 06 20.4     11.90     ~ 3 0
5 SV* HV 810 RR* 00 23 40.5541561004 -72 05 59.941655079   13.76 13.710   13.184 kF1hF4 45 0
6 Cl* NGC 104 LW 3 V* 00 23 47.3842503544 -72 06 52.698428633     11.92     ~ 4 0
7 Cl* NGC 104 SAW V21 V* 00 23 50.3757742516 -72 05 50.428593202   13.90 12.21     ~ 14 0
8 Cl* NGC 104 R 79 V* 00 23 51.2540124802 -72 03 49.055106097   13.47 11.70     K2II 8 0
9 Cl* NGC 104 R 26 RG* 00 23 53.1649653147 -72 04 15.589568506   13.410 11.724   9.765 M2II/II-III 9 0
10 Cl* NGC 104 LW 6 V* 00 23 54.67 -72 03 38.9   13.47 11.85     ~ 4 0
11 SV* HV 813 V* 00 23 55.6412904476 -71 57 28.386674358   13.46 11.80 11.59   M 12 0
12 2MASS J00235692-7205325 RG* 00 23 56.9335581331 -72 05 32.558886305   13.398 11.775   9.858 ~ 7 0
13 2MASS J00235767-7205296 pA* 00 23 57.68 -72 05 29.6     11.368   9.916 ~ 8 0
14 Cl* NGC 104 LW 9 V* 00 23 58.1802213834 -72 05 49.228897244     12.34     ~ 4 0
15 2MASS J00235894-7202345 V* 00 23 58.9335583368 -72 02 34.599081485   13.78 11.96     ~ 4 0
16 Cl* NGC 104 CHUN 5-67 V* 00 24 00.5338727712 -72 07 26.827577093   12.1 12.34     M4.5 26 0
17 Cl* NGC 104 R 4 LP* 00 24 02.58 -72 05 07.5   14.196 11.486   9.347 G8III: 14 0
18 2MASS J00240317-7204507 LP* 00 24 03.1673780500 -72 04 50.671132984   13.475 11.465   10.086 ~ 6 0
19 2MASS J00240398-7205100 LP* 00 24 04.0043116126 -72 05 10.029007771   13.688 11.498   9.595 ~ 7 0
20 NGC 104 GlC 00 24 05.359 -72 04 53.20   5.78 4.09     ~ 3586 0
21 2MASS J00240786-7204316 V* 00 24 07.86 -72 04 31.7     12.56     ~ 6 0
22 Cl* NGC 104 SAW V8 V* 00 24 08.5913749110 -72 03 54.759914637   13.779 10.950   9.037 M2/3II:e 27 0
23 2MASS J00240892-7202595 V* 00 24 08.92 -72 02 59.5   13.48 11.80     ~ 7 0
24 2MASS J00241002-7204438 V* 00 24 10.03 -72 04 43.9     11.71     ~ 3 0
25 Cl* NGC 104 R 12 V* 00 24 11.1738648174 -72 05 09.398773267   13.555 11.76   9.663 M1II/II-III 8 0
26 Cl* NGC 104 SAW V1 AB* 00 24 12.6644611039 -72 06 39.794959336     11.65     M2/3Ibe 32 0
27 2MASS J00241360-7204524 V* 00 24 13.60 -72 04 52.5     11.88     ~ 3 0
28 Cl* NGC 104 MFF 1412 V* 00 24 14.4644166894 -72 05 09.266571433   14.159 12.193   9.920 ~ 6 0
29 Cl* NGC 104 R 10 V* 00 24 14.7673205490 -72 04 44.453545650   13.475 11.120   9.765 K3II 15 0
30 Cl* NGC 104 MFF 2271 V* 00 24 15.1566611820 -72 04 36.445462420   13.898 11.178   8.671 ~ 8 0
31 Cl* NGC 104 LW 17 V* 00 24 16.3054224826 -72 01 30.725322491     11.81     ~ 2 0
32 Cl* NGC 104 SAW V2 AB* 00 24 18.5872447444 -72 07 58.906977494   13.08 11.59     M2/3Ib-IIe 27 0
33 Cl* NGC 104 LW 18 V* 00 24 20.5349881204 -72 04 49.670770196     11.91     ~ 4 0
34 Cl* NGC 104 A 19 * 00 24 21.7372233319 -72 04 13.164399421     13.52     ~ 5 0
35 Cl* NGC 104 LW 19 V* 00 24 23.1753274953 -72 04 22.860966337     11.85     ~ 5 0
36 Cl* NGC 104 CHUN 5-637 V* 00 24 25.7053651813 -72 06 29.967242744   12.0 11.74     M2 19 0
37 2MASS J00242952-7209077 RG* 00 24 29.5545400966 -72 09 07.607583820   13.394 11.717   9.884 ~ 8 0
38 2MASS J00243013-7204315 V* 00 24 30.1489104400 -72 04 31.411422397   13.51 11.82     ~ 5 0
39 TYC 9137-3201-1 V* 00 24 52.0658453075 -71 56 11.203394241   13.29 11.63     ~ 10 0
40 Cl* NGC 104 SAW V5 V* 00 25 03.6658607985 -72 09 31.685961205   12.44 11.44     M2II/III 24 0
41 UCAC2 1160850 V* 00 25 09.0885973673 -72 02 16.010388520   13.77 12.25     ~ 19 0
42 Cl* NGC 104 SAW V18 * 00 25 09.2112989186 -72 02 39.548650907   13.55 11.67     ~ 19 0
43 Cl* NGC 104 SAW V3 Mi* 00 25 15.9991520189 -72 03 54.667782644   13.50 11.51     M2/3Ib-IIe 35 0
44 Cl* NGC 104 SAW V7 V* 00 25 20.5554773940 -72 06 39.943478043   13.38 11.78     M2: 17 0
45 SV* HV 811 AB* 00 25 23.1978795957 -72 11 05.327088527   11.7 11.65     M2/3 13 1
46 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9610 1
47 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15064 1

    Equat.    Gal    SGal    Ecl

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2020.12.03-13:16:35

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