J/A+A/625/A1 RR Lyrae variables NIR light-curve templates (Braga+, 2019)
New near-infrared JHKs light-curve templates for RR Lyrae variables.
Braga V.F., Stetson P.B., Bono G., Dall'Ora M., Ferraro I., Fiorentino G.,
Iannicola G., Inno L., Marengo M., Neeley J., Beaton R.L., Buonanno R.,
Calamida A., Contreras Ramos R., Chaboyer B., Fabrizio M., Freedman W.L.,
Gilligan C.K., Johnston K.V., Lub J., Madore B.F., Magurno D., Marconi M.,
Marinoni S., Marrese P.M., Mateo M., Matsunaga N., Minniti D., Monson A.J.,
Monelli M., Nonino M., Persson S.E., Pietrinferni A., Sneden C., Storm J.,
Walker A.R., Valenti E., Zoccali M.
<Astron. Astrophys. 625, A1 (2019)>
=2019A&A...625A...1B 2019A&A...625A...1B (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, globular ; Stars, variable ; Photometry, infrared ;
Photometry, UBVRI
Keywords: stars: variables: RR Lyrae - methods: data analysis -
globular clusters: individual: M4 -
globular clusters: individual: omega Centauri - Magellanic Clouds
Abstract:
We provide homogeneous optical (UBVRI) and near-infrared (NIR, JHK)
time series photometry for 254 cluster (omega Cen, M4) and field RR
Lyrae (RRL) variables. We ended up with more than 551000 measurements.
For 94 fundamental (RRab) and 51 first overtones (RRc) we provide a
complete optical/NIR characterization (mean magnitudes, luminosity
amplitudes, epoch of the anchor point). The NIR light curves of these
variables were adopted to provide new light-curve templates for both
RRc and RRab variables. The templates for the J and the H bands are
newly introduced, together with the use of the pulsation period to
discriminate among the different RRab templates. To overcome
uncertainties in the fit of secondary features of the light curves we
provide two independent sets of analytical functions (Fourier and
periodic Gaussian series).
Description:
We present a catalog of 254 RRLs. We use proprietary optical and NIR
PSF-reduced photometry of RRLs in M4 and in omega Cen. Optical data
are in the Landolt system, and NIR data are in the 2MASS photometric
system. We note that the NIR data were binned by epoch, therefore each
phase point is actually an average of three to five phase points
belonging to the same dithering sequence. These data were supplemented
with 1) relatively old optical and NIR photoelectric photometry of 26
Milky Way (MW) field RRLs, mostly collected to perform Baade-Wesselink
(BW) analysis, and 2) optical data from long-term photometric surveys
(ASAS, NSVS, CATALINA).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 73 265 List of studied RR Lyrae
table1.dat 50 532868 Optical time series of all the RRLs
table2.dat 43 18321 NIR time series of all the RRLs
table3.dat 139 145 Photometric properties of all the RRLs
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See also:
J/ApJ/808/11 : RR Lyrae stars in M4. II. Spitzer/IRAC phot. (Neeley+, 2015)
J/PASP/126/521 : UBVRIJHK photometry of RR Lyrae in M4 (Stetson+, 2014)
J/A+AS/105/145 : RR Lyr stars of ome Cen (Petersen 1994)
J/A+AS/125/343 : OGLE RR Lyr stars in omega Cen (Kaluzny+ 1997)
J/ApJ/640/L43 : Metallicities of RR Lyrae stars in Omega Cen (Sollima+, 2006)
J/A+A/574/A15 : RR Lyrae in omega Cen (Fernandez-Trincado+, 2015)
J/AJ/152/170 : RRLs in globulars. IV. UBVRI photometry in Omega Cen
(Braga+, 2016)
J/A+A/604/A120 : omega Cen RR Lyrae and SX Phoenicis stars (Navarrete+, 2017)
Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Star name
12- 13 I2 h RAh ? Simbad right ascension (J2000)
15- 16 I2 min RAm ? Simbad right ascension (J2000)
18- 22 F5.2 s RAs ? Simbad right ascension (J2000)
24 A1 --- DE- Simbad declination sign (J2000)
25- 26 I2 deg DEd ? Simbad declination (J2000)
28- 29 I2 arcmin DEm ? Simbad declination (J2000)
31- 34 F4.1 arcsec DEs ? Simbad declination (J2000)
36- 44 F9.7 d Per ? Pulsation period of the star (from table 3)
47 I1 --- T1 [1]? 1 for data in table1 (UBVRI light curves)
49 I1 --- T2 [2]? 2 for data in table2 (JHKs light curves)
51 I1 --- T3 [3]? 3 for data in table3 (JHKs photometric
properties)
53- 73 A21 --- SName Simbad name
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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- 10 A10 --- Name Name of the variable
15 A1 --- Flag ? An asterisk marks a phase point that was not
used to derive any template for this variable
18 I1 --- Band [1/5] Photometric band associated to the
phase point (1)
21- 30 F10.4 d HJD Heliocentric Julian Day (HJD-2400000)
33- 38 F6.3 mag mag Magnitude of the phase point
41- 45 F5.3 mag e_mag Photometric error of the phase point
48- 50 A3 --- Dataset Literature data flag (2)
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Note (1): Photometric band code as follows:
1 = U
2 = B
3 = V
4 = R
5 = I
Note (2): Flag as follows:
B19 = data from our own photometry
asa = data from the ASAS-SN
kal = data from Kaluzny et al. (1997A&AS..125..343K 1997A&AS..125..343K, Cat. J/A+AS/125/343;
2004A&A...424.1101K 2004A&A...424.1101K, Cat. J/A+A/424/1101)
lub = unpublished data by J.H. Lub
stu = data from Sturch (1978PASP...90..264S 1978PASP...90..264S)
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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- 10 A10 --- Name Name of the variable
15 A1 --- Flag [*] An asterisk marks a phase point that was
not used to derive the template (1)
18 I1 --- Band [1/3] Photometric band associated to the
phase point (2)
21- 30 F10.4 d HJD Heliocentric Julian Day (HJD-2400000)
32- 37 F6.3 mag mag Magnitude of the phase point
39- 43 F5.3 mag e_mag Photometric error of the phase point
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Note (1): as indicated in Table 3, in columns FlagJ. FlagH and FlagKs.
Note (2): Photometric band code as follows:
1 = J
2 = H
3 = Ks
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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- 10 A10 --- Name Name of the variable
14 I1 --- Mode [0/1] Pulsation mode of the star,
0=RRab, 1=RRc (1)
16- 24 F9.7 d Per Pulsation period of the star
26- 32 F7.3 mag Jmag ?=-99 J-band mean magnitude, averaged in flux
34- 40 F7.3 mag e_Jmag ?=-99 uncertainty in the J-band mean magnitude
42- 48 F7.3 mag Hmag ?=-99 H-band mean magnitude, averaged in flux
50- 56 F7.3 mag e_Hmag ?=-99 uncertainty in the H-band mean magnitude
58- 64 F7.3 mag Ksmag ?=-99 Ks-band mean magnitude, averaged in flux
66- 72 F7.3 mag e_Ksmag ?=-99 uncertainty in the Ks-band mean magnitude
74- 80 F7.3 mag AmpJ ?=-99 J-band amplitude
82- 88 F7.3 mag e_AmpJ ?=-99 uncertainty in the J-band amplitude
90- 96 F7.3 mag AmpH ?=-99 H-band amplitude
98-104 F7.3 mag e_AmpH ?=-99 uncertainty in the H-band amplitude
106-112 F7.3 mag AmpKs ?=-99 Ks-band amplitude
114-120 F7.3 mag e_AmpKs ?=-99 uncertainty in the Ks-band amplitude
123 I1 --- FlagJ Flag indicating if the variable was used to
generate the J-band light curve template (2)
125 I1 --- FlagH Flag indicating if the variable was used to
generate the H-band light curve template (2)
127 I1 --- FlagKs Flag indicating if the variable was used to
generate the Ks-band light curve template (2)
130-139 F10.4 d Tris Epoch of the mean magnitude on the rising
branch, in HJD-2400000
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Note (1): This column is not present in the printed version of the paper,
because there, RRab and RRc are separated by horizontal lines showing the
statistical properties of the template bin samples.
Note (2): These three columns were compressed into only one column in the
printed version of the table, for a better visualization.
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Acknowledgements:
Vittorio Francesco Braga, vittorio.braga(at)roma2.infn.it
(End) Vittorio F. Braga [Univ. Andres Bello], Patricia Vannier [CDS] 18-Mar-2019