J/MNRAS/446/2251   Southern Catalina Survey type-ab RR Lyrae  (Torrealba+, 2015)
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Discovery of ~9,000 new RR Lyrae in the southern Catalina surveys.
    Torrealba G., Catelan M., Drake A.J., Djorgovski S.G., McNaught R.H.,
    Belokurov V., Koposov S., Graham M.J., Mahabal A., Larson S.,
    Christensen E.
   <Mon. Not. R. Astron. Soc. 446, 2251 (2015)>
   =2015MNRAS.446.2251T
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ADC_Keywords: Surveys ; Stars, variable
Keywords: methods: data analysis - methods: statistical -
          stars: variables: RR Lyrae - Galaxy: halo - Galaxy: structure

Abstract:
    We present the results of a deep, wide-area variability survey in the
    Southern hemisphere. As part of the Catalina Sky Surveys, the Siding
    Spring Survey (SSS) has covered 14,800 square degrees in the
    declination range of -75{deg}<delta<-15{deg} To mine the enormous
    SSS dataset efficiently we have developed two algorithms: Automatic
    Period Selection (APS) and Automatic Fourier Decomposition (AFD),
    which aim to sharpen the period estimation and produce robust
    lightcurve models. Armed with the APS and AFD outputs we classify
    10540 ab-type RR Lyrae (RRab) stars (~90% of which are new) across
    the Southern sky.

Description:
    The RR Lyrae presented are found using the Siding Spring Survey (SSS),
    which is the southern part of the Catalina Sky Surveys. The SSS uses
    the Uppsala 0.5-m Schmidt telescope equipped with 4k*4k CCD camera,
    with a field of view of 4 square degrees. In the SSS observations the
    Galactic plane region (|b|<15{deg}) is avoided due to crowding. Images
    are unfiltered to maximize throughput, and taken in sequences of four
    observations separated by ten minutes with exposures that last
    approximately 30 seconds.

File Summary:
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 FileName   Lrecl  Records   Explanations
--------------------------------------------------------------------------------
ReadMe         80        .   This file
table2.dat    121    10540   Type-ab RR Lyrae selected from the Siding Spring
                              Survey (SSS)
table3.dat     83       27   Overdensity candidates in the Galactic halo
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See also:
  J/A+A/463/589 : RR Lyrae in southern globular cluster NGC 362 (Szekely+, 2007)
  J/ApJ/763/32  : Galactic halo type-ab RR Lyraes from CSS (Drake+, 2013)
  J/ApJS/213/9  : Catalina Surveys periodic variable stars (Drake+, 2014)

Byte-by-byte Description of file: table2.dat
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   Bytes Format Units   Label     Explanations
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   1-  4  A4    ---     ---       [SSS_]
   5- 20  A16   ---     SSS       SSS designation (JHHMMSS.s+DDMMSS)
  22- 30  F9.5  deg     RAdeg     Right ascension (J2000)
  32- 40  F9.5  deg     DEdeg     Declination (J2000)
  42- 46  F5.2  mag     Vmag      Average V-band magnitude
  48- 54  F7.5  d       Per       [0.4/1.0] Period
  56- 59  F4.2  mag     Amp       [0.11/1.59] Amplitude of the lightcurve
  61- 63  I3    ---     Nobs      [59/280] Number of photometric observations
  65- 69  F5.2  kpc     dH        [0.9/51] Distance to the Sun
  71- 75  F5.2  [Sun]   [Fe/H]    [-3/0.4] Photometric Metallicity (1)
  77- 82  F6.4  ---     E(B-V)    [0/1.9] Reddening from Schlegel et al.
                                   (1998ApJ...500..525S) maps
  84- 88  F5.1  ---     Dm        [1/215] Metallicity reliability parameter (2)
  90- 95  F6.4  rad     phi31     [0/6.283] {phi}_31_ lightcurve parameter
                                          ({phi}_31_={phi}_3_-3{phi}_1_)
  97-121  A25   ---     OName     Name if previously known
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Note (1): the photometric metallicity is given by Jurcsik & Kovacs 1996
     (J/A+A/312/111): [Fe/H] = -5.038-5.394logP+1.345{phi}_31_.
Note (2): the reliability parameter is defined by Jurcsik & Kovacs 1996
     (J/A+A/312/111): D_m_=max(|F_obs_-F_calc_|/{sigma}_F_), maximum of
     the deviations of the Fourier parameters relative to their errors.
     If D_m_<3, the light curve satisfies the compatibility condition.
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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    ---     ID      Reference designation
   7- 12  A6    ---     ---     [SSSOc_]
  13- 26  A14   ---     SSSOC   Overdensity designation (JHHMMSS+DDMMSS)
  28- 32  F5.2  ---     Signi   [2.1/16] Significance in standard deviations
                                 ({sigma} unit)
  34- 39  F6.2  deg     RAdeg   Mean right ascension of stars of the
                                 overdensity (J2000)
  41- 46  F6.2  deg     DEdeg   Mean declination of stars of the
                                 overdensity (J2000)
  48- 50  I3    ---     nRRL    [7/327] Number of stars associated with the
                                 overdensity
  52- 56  F5.2  mag     Vmag    Mean magnitude of the stars of the overdensity
  58- 62  F5.2  mag   b_Vmag    Minimum V magnitude of the stars of the
                                 overdensity
  64- 68  F5.2  mag   B_Vmag    Maximum V magnitude of the stars of the
                                 overdensity
  70- 73  F4.1  kpc     dD      [0.4/13] Overdensity's extension along the line
                                  of sight, {delta}D
  75- 78  F4.1  deg     dRA     [2.9/70.9] Extension in RA, {delta}RAcosDE
  80- 83  F4.1  deg     dDE     [3.7/34.1] Extension in Declination, {delta}DE
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Acknowledgements:
    Gabriel Torrealba, git21(at)ast.cam.ac.uk

History:
  * 26-Nov-2014: on-line version
  * 22-Jun-2015: table 3 added (from electronic version of the paper)

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(End)   Gabriel Torrealba [Cambridge Univ.], Patricia Vannier [CDS]  31-Oct-2014
