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J/ApJ/780/92  Light curves of the RR Lyr SDSS J015450.17+001500.7 (Szabo+, 2014)

High-precision 2MASS JHKs light curves and other data for RR Lyrae star SDSS J015450+001501: strong constraints for nonlinear pulsation models. Szabo R., Ivezic Z., Kiss L.L., Kollath Z., Jones L., Sesar B., Becker A.C., Davenport J.R.A., Cutri R.M. <Astrophys. J., 780, 92 (2014)> =2014ApJ...780...92S
ADC_Keywords: Stars, variable ; Photometry, SDSS ; Photometry, infrared Keywords: infrared: stars - stars: atmospheres - stars: individual: SDSS J015450+001501 - stars: oscillations - stars: variables: RR Lyrae - techniques: photometric Abstract: We present and discuss an extensive data set for the non-Blazhko ab-type RR Lyrae star SDSS J015450+001501, including optical Sloan Digital Sky Survey ugriz light curves and spectroscopic data, LINEAR and Catalina Sky Survey unfiltered optical light curves, and infrared Two Micron All Sky Survey (2MASS) JHKs and Wide-field Infrared Survey Explorer W1 and W2 light curves. Most notable is that light curves obtained by 2MASS include close to 9000 photometric measures collected over 3.3yr and provide an exceedingly precise view of near-infrared variability. These data demonstrate that static atmosphere models are insufficient to explain multiband photometric light-curve behavior and present strong constraints for nonlinear pulsation models for RR Lyrae stars. It is a challenge to modelers to produce theoretical light curves that can explain data presented here, which we make publicly available. Description: Visible and near-infrared light curves are collected for the non-Blazhko RRab star SDSS J015450+001501. The data include 2MASS, SDSS, LINEAS, Catalina Sky Survey and WISE. We also include the spectral energy distribution of the star. Objects: ------------------------------------------------------------------------ RA (2000) DE Designation(s) ------------------------------------------------------------------------ 01 54 50.17 +00 15 00.7 SDSS J015450+001501 = SDSS J015450.17+001500.7 ------------------------------------------------------------------------ File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file 2mass.dat 87 2969 2MASS JHKs photometry (table5) css.dat 22 270 *Catalina Sky Survey photometry (table4) linear.dat 25 225 *LINEAR photometry (table3) sdss.dat 129 64 *SDSS photometry (table2) wise.dat 38 43 WISE photometry extracted by Roc Cutri (IPAC) (table6) sed.dat 48 10 Spectral energy distribution (table7)
Note on css.dat: Extracted by Zeljko Ivezic from; note that the CSS period search tool returns an incorrect value: 3.5261664d for the most probable period; the correct period (0.6369815) is returned as the third most probable value. Note on linear.dat: LINEAR ID = 25154736. For details, see Sesar et al. (2011AJ....142..190S) and Sesar et al. 2013 (J/AJ/146/21) Note on sdss.dat: taken from table 1 in Sesar et al. 2010 (J/ApJ/708/717). Magnitudes are not corrected for ISM dust extinction. The amplitudes (in mag) are from table 2: ------------------------------------------------------------ u g r i z r-band mjd maximum ------------------------------------------------------------ 1.18 1.15 0.90 0.72 0.66 53675.2990803 ------------------------------------------------------------ 106 119 107 111 109 (best-fit template numbers) ------------------------------------------------------------ Also, from table3 in Sesar et al. (2010ApJ...708..717S,): ------------------------------------------------------------------ ID RA DEC Ar Dhel Dgc ------------------------------------------------------------------ 1308429 28.709058 0.250204 0.099 7.59 13.36 ------------------------------------------------------------------ <u> <g> <r> <i> <z> <V> ug_min gr_min ------------------------------------------------------------------ 16.254 15.102 14.984 14.967 14.977 15.000 1.141 0.008 0.233 0.006 ------------------------------------------------------------------ Note that the same paper gives best-fit templates and epoch of maximum (see table2) For completeness, SSPP parameters (Data Release 7): ------------------------------------------------------------------------------- RA DEC MJD-Plate-Fiber [Fe/H] Teff logg radVel ------------------------------------------------------------------------------- 28.709045 0.250209 52199-700-515 -1.309 0.027 6580 104 2.972 0.198 -135.1 1.8
See also: J/ApJ/708/717 : Light curve templates of RR Lyrae stars (Sesar+, 2010) J/AJ/146/21 : LINEAR. II. Catalog of RR Lyrae stars (Sesar+, 2013) Byte-by-byte Description of file: 2mass.dat
Bytes Format Units Label Explanations
1- 9 I9 --- ID Source ID 11- 19 F9.6 deg RAdeg Right ascension (J2000.0) 21- 28 F8.6 deg DEdeg Declination (J2000.0) 30- 42 F13.7 --- BJD Barycentric Julian Date (BJD-2400000) 44- 49 F6.3 mag Jmag 2MASS J magnitude 51- 55 F5.3 mag e_Jmag J magnitude error 57 A1 --- q_Jmag [A] J magnitude quality flag (1) 59- 64 F6.3 mag Hmag 2MASS H magnitude 66- 70 F5.3 mag e_Hmag H magnitude error 72 A1 --- q_Hmag [AB] H magnitude quality flag (1) 74- 79 F6.3 mag Kmag 2MASS Ks magnitude 81- 85 F5.3 mag e_Kmag K magnitude error 87 A1 --- q_Kmag [AB] K magnitude quality flag (1)
Note (1): Single character flag that is related to the probability (P) that the extraction is a valid detection of a near-infrared source on the sky at the time of the observation. "A" means P>90%, "B" means 80%<P<90%.
Byte-by-byte Description of file: css.dat
Bytes Format Units Label Explanations
1- 11 F11.5 --- MJD Modified Julian Date 13- 17 F5.2 mag mag Unfiltered CSS magnitude 19- 22 F4.2 mag e_mag Magnitude error
Byte-by-byte Description of file: linear.dat
Bytes Format Units Label Explanations
1- 12 F12.6 --- MJD Modified Julian Date 14- 19 F6.3 mag mag Unfiltered LINEAR magnitude 21- 25 F5.3 mag e_mag Magnitude error
Byte-by-byte Description of file: sdss.dat
Bytes Format Units Label Explanations
1- 12 F12.6 --- MJDu Modified Julian date of the u observation 14- 19 F6.3 mag umag ?=99.999 SDSS u magnitude 21- 25 F5.3 mag e_umag Error of the u magnitude 27- 38 F12.6 --- MJDg Modified Julian date of the g observation 40- 45 F6.3 mag gmag ?=99.999 SDSS g magnitude 47- 51 F5.3 mag e_gmag Error of the g magnitude 53- 64 F12.6 --- MJDr Modified Julian date of the r observation 66- 71 F6.3 mag rmag ?=99.999 SDSS r magnitude 73- 77 F5.3 mag e_rmag Error of the r magnitude 79- 90 F12.6 --- MJDi Modified Julian date of the i observation 92- 97 F6.3 mag imag ?=99.999 SDSS i magnitude 99-103 F5.3 mag e_imag Error of the i magnitude 105-116 F12.6 --- MJDz Modified Julian date of the z observation 118-123 F6.3 mag zmag ?=99.999 SDSS z magnitude 125-129 F5.3 mag e_zmag Error of the z magnitude
Byte-by-byte Description of file: wise.dat
Bytes Format Units Label Explanations
1- 12 F12.6 --- MJD Modified Julian date 14- 19 F6.3 mag W1mag WISE W1 magnitude 21- 25 F5.3 mag e_W1mag W1 magnitude error 27- 32 F6.3 mag W2mag WISE W2 magnitude 34- 38 F5.3 mag e_W2mag W2 magnitude error
Byte-by-byte Description of file: sed.dat
Bytes Format Units Label Explanations
1- 2 A2 --- Band [ugriz JHK W1W2] Photometric band 4- 9 F6.4 um lam.eff [0.35/4.5] Effective wavelength (micrometer) 11- 15 F5.2 mag magMin Magnitude at minimum not corrected for ISM dust extinction (1) 17- 20 F4.2 mag e_magMin Magnitude error at minimum 22- 26 F5.2 mag magMax Magnitude at maximum not corrected for ISM dust extinction (1) 28- 31 F4.2 mag e_magMax Magnitude error at maximum 33- 36 F4.2 mag Ampl Amplitude 38- 42 F5.2 mag mag(0.5) Magnitude at 0.5 phase 44- 48 F5.3 mag Ext Extinction (2)
Note (1): The table lists 2MASS and WISE magnitudes on AB scale. The following Vega-to-AB magnitude offsets (mAB=mVega+offset) were used: 0.89, 1.37, 1.84 in JHK, and 2.6, 3.3 in W1 and W2. Note (2): Plausible extinction corrections are derived using the SFD value for the r-band extinction quoted by SDSS for this star: Ar=0.099, and coefficients listed in the first row of Table 1 from Berry et al. (2012ApJ...757..166B) for the ugrizJHK bands. For the WISE bands, the coefficients taken from Yuan, Liu & Xiang (2013MNRAS.430.2188Y) (AW1/Ar=0.084, AW2/Ar=0.074).
Acknowledgements: Robert Szabo, rszabo(at)
(End) Patricia Vannier [CDS] 15-Sep-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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