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J/MNRAS/391/1279    Multiwavelength study of NGC 7419        (Joshi+, 2008)
Multiwavelength study of a young open cluster NGC7419.
    Joshi H., Kumar B., Singh K.P., Sagar R., Sharma S., Pandey J.C.
   <Mon. Not. R. Astron. Soc., 391, 1279-1300 (2008)>
   =2008MNRAS.391.1279J
ADC_Keywords: Clusters, open ; Photometry, UBVRI ; Photometry, H-alpha ;
              X-ray sources
Keywords: stars: emission-line, Be - stars: formation -
          stars: pre-main-sequence - X-rays: galaxies: clusters - X-rays: stars

Abstract:
    Using new UBVRI Hα CCD photometric observations and the archival
    infrared and X-ray data, we have carried out a multiwavelength study
    of a Perseus arm young open star cluster NGC 7419. Using XMM-Newton
    observations, we found several X-ray sources in the cluster region but
    none of the Herbig Ae/Be stars is detected in X-rays.

Description:
    The optical observations of NGC 7419 were carried out using a thinned
    back-illuminated CCD camera mounted at f/13 Cassegrain focus of the
    104-cm Sampurnanand reflector telescope of Aryabhatta Research
    Institute of Observational Sciences, Nainital.
    Broad-band Johnson UBV, Cousins RI and narrow-band Hα line
    (λ=656.5nm) and Hα continuum (λ=665nm)
    filters were used for observations.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table3.dat       124     1817   UBVRI and Hα photometric data of the sample
                              stars in 13'x13' region
table6.dat        86       44   Photometric properties of 44 Hα
                              emission-line stars in 13x13arcmin2 region
                              around NGC 7419
table13.dat       78       66   X-ray sources detected using SAS task edetect_chain


See also:
   J/ApJS/93/187 : UBV Photometry in NGC 7419 (Beauchamp+ 1994)


Byte-by-byte Description of file: table3.dat

   Bytes Format Units   Label     Explanations

   1-  4  I4    ---    [JKS2008]  Sequential number
   6-  7  I2    h       RAh       Right ascension (J2000)
   9- 10  I2    min     RAm       Right ascension (J2000)
  12- 16  F5.2  s       RAs       Right ascension (J2000)
      18  A1    ---     DE-       Declination sign (J2000)
  19- 20  I2    deg     DEd       Declination (J2000)
  22- 23  I2    arcmin  DEm       Declination (J2000)
  25- 29  F5.2  arcsec  DEs       Declination (J2000)
  31- 38  F8.3  pix     Xpos      X position (1)
  40- 46  F7.3  pix     Ypos      Y position (1)
  48- 53  F6.3  mag     Umag      ?=99.999 Johnson U magnitude
  55- 59  F5.3  mag     e_Umag    ?=9.999 rms uncertainty on Umag
  61- 66  F6.3  mag     Bmag      ?=99.999 Johnson B magnitude
  68- 72  F5.3  mag     e_Bmag    ?=9.999 rms uncertainty on Bmag
  74- 79  F6.3  mag     Vmag      ?=99.999 Johnson V magnitude
  81- 85  F5.3  mag     e_Vmag    ?=9.999 rms uncertainty on Vmag
  87- 92  F6.3  mag     Rcmag     ?=99.999 Cousins R magnitude
  94- 98  F5.3  mag     e_Rcmag   ?=9.999 rms uncertainty on Rcmag
 100-105  F6.3  mag     Icmag     ?=99.999 Cousins I magnitude
 107-111  F5.3  mag     e_Icmag   ?=9.999 rms uncertainty on Icmag
 113-118  F6.3  mag     Ha        ?=99.999 Hα index (2)
 120-124  F5.3  mag     e_Ha      ?=9.999 rms uncertainty on Ha

Note (1): X and Y positions of stars in the CCD are converted into RA+Dec
     J2000 using the Guide Star Catalogue II (GSC 2.2, 2001, Cat. I/271)
Note (2): index computed from a a narrow-band Hα (8nm around 656.5nm)
     and a Hα continuum filter


Byte-by-byte Description of file: table6.dat

   Bytes Format Units   Label     Explanations

   1-  3  I3    ---    [JKS2008]  ? Sequential number
       4  A1    ---  f_[JKS2008]  [a] indicates a Vmag error ≥ 0.1mag
   6-  7  I2    h       RAh       Right ascension (J2000)
   9- 10  I2    min     RAm       Right ascension (J2000)
  12- 13  I2    s       RAs       Right ascension (J2000)
      15  A1    ---     DE-       Declination sign (J2000)
  16- 17  I2    deg     DEd       Declination (J2000)
  19- 20  I2    arcmin  DEm       Declination (J2000)
  22- 23  I2    arcsec  DEs       Declination (J2000)
  25- 29  F5.1  pix     Xpos      X position
  31- 35  F5.1  pix     Ypos      Y position
  37- 42  F6.3  mag     Vmag      ?=99.999 Johnson V magnitude
  43- 48  F6.3  mag     Rcmag     ?=99.999 Cousins R magnitude
  49- 54  F6.3  mag     Ha        ?=99.999 Hα index
  55- 60  F6.3  mag     Rc-Ic     ?=99.999 Cousins R-I colour index
  61- 63  A3    ---     Det       [Yes No] Detection in the present work
  66- 68  A3    ---     ---       [BMD]
  70- 73  I4    ---     BMD       ? Beauchamp et al. (1994, Cat. J/ApJS/93/187)
                                    designation, BMD NNNN (3)
  75- 79  A5    --      Note      [PK field] Note (4)
  82- 86  A5    ---     SMB       Subramaniam et al. (2006MNRAS.370..743S)
                                   designation, SMB A (3)

Note (3): Nomenclature note:
      *   BMD NNNN are identified as CL* NGC 7419 BMD NNNN in Simmbad
      *   SMB A are identified as Cl* NGC 7419 SMB A in Simmbad
Note (4): Notes as follows:
     PK = star present in Pigulski & Kopacki (2000A&AS..146..465P)
  field = star located outside the cluster region (see Section 2.4)


Byte-by-byte Description of file: table13.dat

   Bytes Format Units     Label     Explanations

   1-  3  A3    ---      [JKS2008]  Sequential number, XNN (1)
   5-  6  I2    h         RAh       Right ascension (J2000)
   8-  9  I2    min       RAm       Right ascension (J2000)
  11- 12  I2    s         RAs       Right ascension (J2000)
      14  A1    ---       DE-       Declination sign (J2000)
  15- 16  I2    deg       DEd       Declination (J2000)
  18- 19  I2    arcmin    DEm       Declination (J2000)
  21- 22  I2    arcsec    DEs       Declination (J2000)
  24- 29  F6.2  10-3ct/s  CR        pn-equivalent count rate in energy band
                                     0.3-7.5keV
  31- 34  F4.2  10-3ct/s  e_CR      rms uncertainty on CR
  36- 37  A2    ---       l_HR1     [≤ ] Limit flag on HR1 (2)
  38- 42  F5.2  ---       HR1       HR1 hardness ratio (3)
  44- 48  F5.3  ---       e_HR1     ? rms uncertainty on HR1
  50- 51  A2    ---       l_HR2     [≤ ] Limit flag on HR2 (2)
  52- 56  F5.2  ---       HR2       HR2 hardness ratio (3)
  58- 62  F5.3  ---       e_HR2     ? rms uncertainty on HR2
  63- 78  A16   ---       Rem       Remark (4)

Note (1): Identification number from X-ray source detection and display
     in Fig. 18
Note (2): The sign '≤' represents the hardness ratio calculated after
     replacing zero counts by upper limits in either of the energy band
Note (3): HR1=(M-S)/(M+S) and HR2=(H-M)/(H+M) where S=0.3-0.7keV,
     M=0.7-1.2keV and H=1.2-7.5keV.
Note (4): Remarks as follows:
    PCM = X-ray source with membership probability using hardness
          ratio - the X-ray sources inside the dotted box in Fig. 20
    IR  = X-ray source with NIR counterparts within 6-arcsec search
          radius using 2MASS data
    OPT = X-ray source with optical counterparts within 6-arcsec search
          radius using our UBVRI photometry
    Cl  = X-ray source within cluster region NGC 7419 - see Section 3.1


History:
    From electronic version of the journal
(End)                                      Patricia Vannier [CDS]    04-May-2009