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J/AJ/145/160  Variables in LMC globular clusters. III. Reticulum  (Kuehn+, 2013)

Variable stars in large Magellanic cloud globular clusters. III. Reticulum. Kuehn C.A., Dame K., Smith H.A., Catelan M., Jeon Y.-B., Nemec J.M., Walker A.R., Kunder A., Pritzl B.J., De Lee N., Borissova J. <Astron. J., 145, 160 (2013)> =2013AJ....145..160K
ADC_Keywords: Magellanic Clouds ; Clusters, globular ; Stars, variable ; Photometry, UBVRI Keywords: Magellanic Clouds - stars: horizontal-branch - stars: variables: general - stars: variables: RR Lyrae Abstract: This is the third in a series of papers studying the variable stars in old globular clusters in the Large Magellanic Cloud. The primary goal of this series is to look at how the characteristics and behavior of RR Lyrae stars in Oosterhoff-intermediate systems compare to those of their counterparts in Oosterhoff-I/II systems. In this paper we present the results of our new time-series BVI photometric study of the globular cluster Reticulum. We found a total of 32 variables stars (22 RRab, 4 RRc, and 6 RRd stars) in our field of view. We present photometric parameters and light curves for these stars. We also present physical properties, derived from Fourier analysis of light curves, for some of the RR Lyrae stars. We discuss the Oosterhoff classification of Reticulum and use our results to re-derive the distance modulus and age of the cluster. Description: A total of 38V, 33B, and 35I images were obtained using the SOI imager (5.2*5.2arcmin field of view) on the SOAR 4m telescope in February of 2008. ANDICAM (6*6arcmin field of view) on the SMARTS 1.3m telescope operated by the SMARTS consortium was used to obtain 45V, 43B, and 45I images between 2006 September and the end of 2006 December. An additional 145V and 146B image were taken with the Tek2K (13.6*13.6arcmin field of view) on the SMARTS 0.9m telescope between 2008 December and 2009 November. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 89 26 Photometric parameters for the RRab and RRc variables in Reticulum table2.dat 110 6 Photometric parameters for the RRd variables in Reticulum table3.dat 44 16339 Photometry of the variable stars
See also: J/AJ/144/186 : Variables in LMC globular clusters. II. NGC 1786 (Kuehn+, 2012) J/AJ/142/107 : Variable stars in NGC 1466 (Kuehn+, 2011) J/AJ/139/357 : Variable stars in NGC 5286 (Zorotovic+, 2010) J/AJ/129/267 : RR Lyrae variables in NGC 5272 (Cacciari+, 2005) J/AcA/53/93 : OGLE RR Lyrae in LMC (Soszynski+, 2003) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1 A1 --- --- [V] 2- 3 I2 --- Vno [1/31] Variable number 4- 5 A2 --- f_Vno [BL] Potential Blazhko effect 7- 8 I2 h RAh Hour of Right Ascension (J2000) 10- 11 I2 min RAm Minute of Right Ascension (J2000) 13- 16 F4.1 s RAs Second of Right Ascension (J2000) 18 A1 --- DE- Sign of the Declination 19- 20 I2 deg DEd Degree of Declination (J2000) 22- 23 I2 arcmin DEm Arcminute of Declination (J2000) 25- 28 F4.1 arcsec DEs Arcsecond of Declination (J2000) 30- 33 A4 --- Type Variable type (RRab or RRc) 35- 41 F7.5 d Per Period 43- 46 F4.2 mag Vamp V band amplitude 48- 51 F4.2 mag Bamp B band amplitude 53- 56 F4.2 mag Iamp I band amplitude 58- 63 F6.3 mag <Vmag> Intensity-weighted V-band mean magnitude 65- 70 F6.3 mag <Bmag> Intensity-weighted B-band mean magnitude 72- 77 F6.3 mag <Imag> Intensity-weighted I-band mean magnitude 79- 83 F5.3 mag <B-V> Magnitude-weighted mean B-V color index 85- 86 A2 --- --- [DK] 87- 89 I3 --- DK [7/181] Star number in Demers & Kunkel (1976ApJ...208..932D
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1 A1 --- --- [V] 2- 3 I2 --- Vno [3/32] Variable number 5- 6 I2 h RAh Hour of Right Ascension (J2000) 8- 9 I2 min RAm Minute of Right Ascension (J2000) 11- 14 F4.1 s RAs Second of Right Ascension (J2000) 16 A1 --- DE- Sign of the Declination 17- 18 I2 deg DEd Degree of Declination (J2000) 20- 21 I2 arcmin DEm Arcminute of Declination (J2000) 23- 26 F4.1 arcsec DEs Arcsecond of Declination (J2000) 28- 33 F6.4 d P0 Fundamental period 35- 40 F6.4 d P1 First overtone period 42- 47 F6.4 --- P1/P0 First overtone to fundamental period ratio 49- 52 F4.2 mag Vamp0 Fundamental V-band amplitude 54- 57 F4.2 mag Vamp1 First overtone V-band amplitude 59- 62 F4.2 mag Bamp0 Fundamental B-band amplitude 64- 67 F4.2 mag Bamp1 First overtone B-band amplitude 69- 72 F4.2 mag Iamp0 Fundamental I-band amplitude 74- 77 F4.2 mag Iamp1 First overtone I-band amplitude 79- 84 F6.3 mag <Vmag> V-band mean magnitude 86- 91 F6.3 mag <Bmag> B-band mean magnitude 93- 98 F6.3 mag <Imag> I-band mean magnitude 100-104 F5.3 mag <B-V> Mean B-V color index 106-107 A2 --- --- [DK] 108-110 I3 --- DK [4/157] Star number in Demers & Kunkel (1976ApJ...208..932D)
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1 A1 --- --- [V] 2- 3 I2 --- Vno [1/32] Variable number 5 A1 --- Flt [BVI] Filter used in the observation (B, V, I) 7- 18 F12.4 d HJD Heliocentric Julian Date of observation 20- 26 F7.5 -- Phase [0/1] Phase (1) 28- 33 F6.3 mag mag [17.878/21.028] Magnitude in Flt 35- 39 F5.3 mag e_mag Error in mag 41- 44 A4 --- Tel Telescope used (0.9m, 1.3m, SOAR) (2)
Note (1): Computed such that maximum light occurs at phase 0. Note (2): Telescope as follows: SOAR = Southern Astrophysical Research 4m telescope; 0.9m = SMARTS (Small & Moderate Aperture Research Telescope System) 0.9m telescope; 1.3m = SMARTS 1.3m telescope.
History: From electronic version of the journal References: Kuehn et al., Paper I, 2011AJ....142..107K, Cat. J/AJ/142/107 Kuehn et al., Paper II, 2012AJ....144..186K, Cat. J/AJ/144/186
(End) Greg Schwarz [AAS], Sylvain Guehenneux [CDS] 02-Jun-2014
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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