J/A+A/585/A111 Long period variables in omega Cen (Lebzelter+, 2016)
Long period variables in omega Cen.
Lebzelter T., Wood P.R.
<Astron. Astrophys. 585, A111 (2016)>
=2016A&A...585A.111L 2016A&A...585A.111L (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, globular ; Stars, variable ; Photometry
Keywords: stars: AGB and post-AGB - stars: variables: general -
globular clusters: individual: omega Centauri
Abstract:
Recent studies have detected multiple populations in globular
clusters. The massive globular cluster ω Cen hosts at least
three populations of different metallicity. The most metal-rich one is
thought to show also an overabundance of He. These differences should
become visible in the structure, evolution, and pulsation of its
stars.
We aim to study the effects of the different starting compositions of
the three populations in ω Cen on the most luminous red giants
in this cluster.
The long-periodic variability of evolved stars in ω Cen opens a
comparably easy access window to the structure and composition of
these objects. We made a detailed search for long-period variables
(LPVs) in ω Cen leading to the detection of many new variables
and period determinations for a significant number of them. Periods
and luminosities were then compared with the most recent pulsation
models for these kinds of stars.
Description:
The paper presents epoch photometry of long period variables in omega
Cen. In this online table, the V band photometry is given for all
known and newly detected variables. Plots of the light curves are
shown in the paper. The data are split into two files, one for
periodic cases and one for non-periodic variables, identical to Figs.
2 and 3 in the paper.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 106 34 LPVs observed in ω Cen
table3.dat 101 62 V-band time series for the periodic LPVs
table4.dat 125 62 V-band time series for the non-periodic LPVs
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- Star Variable star name (1)
6- 10 I5 --- LEID LEID number, Cl* NGC 5139 LEID NNNNN (2)
12- 13 I2 h RAh Right ascension (J2000) (1)
15- 16 I2 min RAm Right ascension (J2000) (1)
18- 21 F4.1 s RAs Right ascension (J2000) (1)
23 A1 --- DE- Declination sign (J2000) (1)
24- 25 I2 deg DEd Declination (J2000) (1)
27- 28 I2 arcmin DEm Declination (J2000) (1)
30- 31 I2 arcsec DEs Declination (J2000) (1)
33- 35 I3 d Per ?=- Period
36 A1 --- --- [,]
37- 39 I3 d Per2 ? Second value of period
41- 43 I3 d Perl ? Litterature period
44- 46 A3 --- r_Perl [abc ] Reference for Perl (1)
47 A1 --- --- [,]
48- 50 I3 d Perl2 ? Second value of litterature period
51 A1 --- r_Perl2 [c] Reference for Perl2 (3)
53- 56 F4.2 mag Kmag 2MASS K magnitude
58- 61 F4.2 mag J-K 2MASS J-K colour index
63- 67 F5.2 mag Vmag V magnitude
69- 72 F4.2 mag V-I V-I colour index
74- 76 F3.1 mag DVmag Amplitude of variation in V-band
78- 81 F4.1 [-] [Fe/H]sc ? Metallicity from Simpson & Cottrell
(2013, Cat. J/MNRAS/433/1892)
83- 87 F5.2 [-] [Fe/H]jp ? Metallicity from Johnson & Pilachowski
(2010, Cat. J/ApJ/722/1373)
88 A1 --- n_[Fe/H]jp [d] Note on [Fe/H]jp (3)
90- 92 I3 % Memb Membership probability (2)
94- 99 A6 --- FileName Name of the table with photometry
101-106 A6 --- ColName Name of the column with photometric data for
this star in the table
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Note (1): V numbers and coordinates are from Clement et al.
(2001AJ....122.2587C 2001AJ....122.2587C).
Note (2): LEID number and membership probability are from van Leeuwen et al.
(2000, Cat. J/A+A/360/472).
Note (3): References and note as follows:
a = Clement et al. (2001AJ....122.2587C 2001AJ....122.2587C)
b = van Leeuwen et al. (2000, Cat. J/A+A/360/472)
c = Martin (1938AnLei..17b...1M 1938AnLei..17b...1M).
d = Norris & Da Costa (1995ApJ...447..680N 1995ApJ...447..680N) give [Fe/H]=-0.85
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 11 E11.6 d JD Julian Date
13- 17 F5.2 mag V6 V band photometry of V6
19- 23 F5.2 mag V42 ?=99.99 V band photometry of V42
25- 29 F5.2 mag V129 V band photometry of V129
31- 35 F5.2 mag V138 V band photometry of V138
37- 41 F5.2 mag V152 V band photometry of V152
43- 47 F5.2 mag L37110 V band photometry of LEID 37110
49- 53 F5.2 mag LW3 V band photometry of LW3
55- 59 F5.2 mag LW5 V band photometry of LW5
61- 65 F5.2 mag LW7 V band photometry of LW7
67- 71 F5.2 mag LW11 V band photometry of LW11
73- 77 F5.2 mag LW17 V band photometry of LW17
79- 83 F5.2 mag LW20 V band photometry of LW20
85- 89 F5.2 mag LW22 V band photometry of LW22
91- 95 F5.2 mag LW25 V band photometry of LW25
97-101 F5.2 mag LW26 V band photometry of LW26
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 11 E11.6 d JD Julian Date
13- 17 F5.2 mag V2925 V band photometry of V292
19- 23 F5.2 mag L39105 V band photometry of LEID 39105
25- 29 F5.2 mag LW1 V band photometry of LW1
31- 35 F5.2 mag LW2 V band photometry of LW2
37- 41 F5.2 mag LW4 V band photometry of LW4
43- 47 F5.2 mag LW6 V band photometry of LW6
49- 53 F5.2 mag LW8 V band photometry of LW8
55- 59 F5.2 mag LW9 V band photometry of LW9
61- 65 F5.2 mag LW10 V band photometry of LW10
67- 71 F5.2 mag LW12 V band photometry of LW12
73- 77 F5.2 mag LW13 V band photometry of LW13
79- 83 F5.2 mag LW14 V band photometry of LW14
85- 89 F5.2 mag LW15 V band photometry of LW15
91- 95 F5.2 mag LW16 V band photometry of LW16
97-101 F5.2 mag LW18 V band photometry of LW18
103-107 F5.2 mag LW19 V band photometry of LW19
109-113 F5.2 mag LW21 V band photometry of LW21
115-119 F5.2 mag LW23 V band photometry of LW23
121-125 F5.2 mag LW24 V band photometry of LW24
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Acknowledgements:
thomas.lebzelter(at)univie.ac.at
(End) Thomas Lebzelter [Univ. of Vienna], Patricia Vannier [CDS] 09-Nov-2015