J/AJ/140/1766 RR Lyrae in M62 (NGC6266) (Contreras+, 2010)
Time-series photometry of globular clusters: M62 (NGC 6266), the most
RR Lyrae-rich globular cluster in the Galaxy?
Contreras R., Catelan M., Smith H.A., Pritzl B.J., Borissova J., Kuehn C.A.
<Astron. J., 140, 1766-1786 (2010)>
=2010AJ....140.1766C 2010AJ....140.1766C
ADC_Keywords: Clusters, globular ; Stars, variable ; Photometry, UBV
Keywords: globular clusters: individual (M62, NGC 6266) -
stars: horizontal-branch - stars: variables: general
Abstract:
We present new time-series CCD photometry, in the B and V bands, for
the moderately metal-rich ([Fe/H]≃-1.3) Galactic globular
cluster M62 (NGC 6266). The present data set is the largest obtained
so far for this cluster and consists of 168 images per filter,
obtained with the Warsaw 1.3m telescope at the Las Campanas
Observatory and the 1.3m telescope of the Cerro Tololo Inter-American
Observatory, in two separate runs over the time span of 3 months.
Description:
Time-series observations in B and V were obtained with the Warsaw 1.3m
telescope at the Las Campanas Observatory (LCO), in the course of
seven consecutive nights over the period 2003 April 6-13.
The Warsaw data were complemented by observations obtained with the
Cerro Tololo Inter-American Observatory (CTIO) 1.3m telescope, over
the timespan 2003 April 24 to 2003 June 30.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 84 245 Photometric parameters for M62 variables
table2.dat 58 25407 Photometry of the variable stars
table3.dat 49 36 Fourier coefficients for RRc variables in M62
table4.dat 50 80 Fourier coefficients for RRab variables in M62
table5.dat 42 21 Physical parameters derived for RRc variables
in M62
table6.dat 54 40 Physical parameters derived for RRab variables
in M62
table7.dat 49 15 Mean parameters for RRc stars in globular
clusters (from Fourier decomposition)
table8.dat 50 14 Mean physical parameters for RRab Stars in
globular clusters (from Fourier decomposition)
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See also:
J/AJ/113/1711 : RR Lyrae in NGC 6171 (Clement+ 1997)
J/other/RMxAA/42.75 : CCD RV light curve of M15 RR Lyrae (Arellano Ferro+ 2006)
J/AJ/139/357 : Variable stars in NGC 5286 (Zorotovic+, 2010)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Name Variable name
7- 16 F10.6 deg RAdeg Right ascension in decimal degrees (J2000)
18- 27 F10.6 deg DEdeg Declination in decimal degrees (J2000)
29 A1 --- l_Per [~] Limit flag on Per
30- 37 F8.5 d Per ?=- Period
39- 43 F5.3 mag Bamp ?=- Amplitude in B band
45- 49 F5.3 mag Vamp ?=- Amplitude in V band
51- 56 F6.3 mag <Bmag> ?=- Average B magnitude
58- 63 F6.3 mag <Vmag> ?=- Average V magnitude
65- 69 F5.3 mag B-V ?=- B-V colour index
71- 75 F5.3 mag E(B-V) ?=- Redenning
77- 84 A8 --- Type Variable type
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Name Variable name
7 A1 --- Filter [BV] Filter used in the observation
9- 22 F14.6 d JD Julian Date of the observation
24- 31 F8.6 --- Phase ?=9.999999 Phase
33- 46 F14.6 --- Data Magnitude or relative flux in Filter (1)
48- 58 F11.6 --- e_Data Uncertainty in Data
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Note (1): In units of magnitudes or counts, respectively.
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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- 5 A5 --- Name Variable name
6- 7 A2 --- n_Name [: ] Note (G1)
9- 13 F5.3 --- A21 Fourier amplitude A21
15- 19 F5.3 --- A31 Fourier amplitude A31
21- 25 F5.3 --- A41 Fourier amplitude A41
27- 31 F5.3 rad phi21 Fourier phase φ21
33- 37 F5.3 rad phi31 Fourier phase φ31
39- 43 F5.3 rad e_phi31 rms uncertainty on phi31
45- 49 F5.3 rad phi41 Fourier phase φ41
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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- 5 A5 --- Name Variable name
6- 7 A2 --- n_Name [: ] Note (G1)
9- 13 F5.3 rad A21 Fourier amplitude A21
15- 19 F5.3 rad A31 Fourier amplitude A31
21- 25 F5.3 rad A41 Fourier amplitude A41
27- 31 F5.3 rad phi21 Fourier phase φ21
33- 37 F5.3 rad phi31 Fourier phase φ31
39- 43 F5.3 rad phi41 Fourier phase φ41
45- 50 F6.1 --- Dm Jursik-Kovacs Dm parameter (1)
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Note (1): The Dm parameter is defined by Jurcsik & Kovacs (1996,
Cat. J/A+A/312/111) and Kovacs & Kanbur (1998MNRAS.295..834K 1998MNRAS.295..834K) as the maximum
value among several combinations of coefficients; it represents a quality
test on the regularity of the shape of the light curve.
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Name Variable name
7- 11 F5.3 Msun Mass Mass (mean: 0.533±0.043)
13- 17 F5.3 [Lsun] logL Luminosity (mean: 1.663±0.012)
19- 23 F5.3 [K] logTe Effective temperature (mean: 3.870±0.002)
25- 29 F5.3 --- Y Helium abundance parameter y
(mean: 0.290±0.003)
31- 36 F6.3 [Sun] [Fe/H] Metallicity in Zinn & West 1984ApJS...55...45Z 1984ApJS...55...45Z
scale (mean: -1.23±0.09)
38- 42 F5.3 mag Average absolute V magnitude
(mean: 0.714±0.033)
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Name Variable name
7- 12 F6.3 [Sun] [Fe/H] Jurcsik (1995AcA....45..653J 1995AcA....45..653J) scale metallicity
(mean: -0.997±0.144, excluding V26)
14- 18 F5.3 mag Average absolute V magnitude
(mean: 0.830±0.03, excluding V26)0
20- 24 F5.3 mag <B-V> Average B-V colour index
(mean: 0.336±0.019, excluding V26)
26- 30 F5.3 [K] logTe.B Effective temperature, calculated from <B-V>
(mean: 3.815±0.006, excluding V26)
32- 36 F5.3 mag <V-I> Average V-I colour index
(mean: 0.489±0.024, excluding V26)
38- 42 F5.3 [K] logTe.I Effective temperature, calculated from <V-I>
(mean: 3.811±0.006, excluding V26)
44- 48 F5.3 mag <V-K> Average V-K colour index
(mean: 1.068±0.049, excluding V26)
50- 54 F5.3 [K] logTe.K Effective temperature, calculated from <V-K>
(mean: 3.813±0.005, excluding V26)
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Cluster Cluster name
10- 15 A6 --- OName Other name
17 A1 --- Ref Reference (1)
19- 20 A2 --- Type Oosterhoff type of cluster (I or II)
22- 26 F5.2 [Sun] [Fe/H] Metallicity from Harris (1996, Cat. VII/195)
catalog (2003 February issue)
28- 29 I2 --- Ns Number of stars
31- 35 F5.3 Msun Mass Mass
36- 40 F5.3 [Lsun] logL Luminosity
41- 44 I4 K Teff Effective temperature
46- 49 F4.2 --- Y Helium abundance parameter y
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Note (1): References as follows:
b = Olech et al. (2001MNRAS.321..421O 2001MNRAS.321..421O)
c = Kaluzny et al. (2000A&AS..143..215K 2000A&AS..143..215K)
d = Kaluzny et al. (2000A&AS..143..215K 2000A&AS..143..215K)
e = Borissova et al. (2001MNRAS.324...77B 2001MNRAS.324...77B)
f = Kaluzny et al. (2001AJ....121.1533K 2001AJ....121.1533K)
g = Kaluzny et al. (1998MNRAS.296..347K 1998MNRAS.296..347K)
h = Lazaro et al. (2006MNRAS.372...69L 2006MNRAS.372...69L)
i = Zorotovic et al. (2010, Cat. J/AJ/139/357)
j = Olech et al. (1999AJ....118..442O 1999AJ....118..442O)
k = Arellano Ferro et al. (2004RMxAA..40..209A 2004RMxAA..40..209A)
l = Clement et al. (1995AJ....110.2200C 1995AJ....110.2200C)
m = Clement & Shelton (1997, Cat. J/AJ/113/1711)
n = Arellano Ferro et al. (2006, Cat. J/other/RMxAA/42.75)
o = Lazaro et al. (2006MNRAS.372...69L 2006MNRAS.372...69L)
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Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Cluster Cluster name
10- 15 A6 --- OName Other name
16 A1 --- Ref [b] References are the same as in Table 7,
except noted: b From Kaluzny et al.
(2000A&AS..143..215K 2000A&AS..143..215K).
18- 19 A2 --- Type Oosterhoff type of cluster (I or II)
21- 25 F5.2 [Sun] [Fe/H] Metallicity from Harris (1996)
catalog (2003 February issue)
27- 28 I2 --- Ns Number of stars
30- 34 F5.2 [Sun] [Fe/H]Z Metallicity in Zinn & West
(1984ApJS...55...45Z 1984ApJS...55...45Z) scale
36- 40 F5.2 [Sun] [Fe/H]J Metallicity in Jurcsik (1995AcA....45..653J 1995AcA....45..653J)
scale
42- 45 I4 K Teff Effective temperature from <V-K>
47- 50 F4.2 mag VMAG Absolute V magnitude
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Global notes:
Note (G1): a colon symbol (":") indicates an uncertain value, whereas a
double colon ("::") indicates a very uncertain value, the latter being
provided for completeness only.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 12-Jul-2012