========================================================================
        Rotation curve of the Milky Way from Classical Cepheids

      P. Mroz, A. Udalski, D. M. Skowron, J. Skowron, I. Soszynski,
 P. Pietrukowicz, M. K. Szymanski, R. Poleski, S. Kozlowski, K. Ulaczyk

========================================================================
pmroz@astrouw.edu.pl

This directory contains:

README                      - this file

Cepheids.dat                - distances, proper motions, and radial 
                              velocities of Cepheids 
rotation_curve.txt          - Galactocentric distances and circular 
                              velocities of Cepheids
fit_rotation_curve.py       - code for modeling the rotation curve
construct_rotation_curve.py - code for constructing the rotation curve
                              based on distances, proper motions, and
                              radial velocities of Cepheids

Format of the file Cepheids.dat:
------------------------------------------------------------------------
   Bytes Format Units   Label   Explanations
------------------------------------------------------------------------
   1- 20 A20    ---     Name    Cepheid name
      22 I1     ---     flag    1 if used in the modeling, 0 otherwise
  24- 35 F12.8  deg     RA      Right Ascension (J2000.0)
  37- 48 F12.8  deg     Decl    Declination (J2000.0)
  50- 61 F12.8  deg     l       Galactic longitude
  63- 74 F12.8  deg     b       Galactic latitude
  76- 81 F6.3   kpc     dist    Heliocentric distance
  83- 88 F6.3   kpc     e_dist  Uncertainty of heliocentric distance
  90- 97 F8.4   mas/yr  pmra    Proper motion in Right Ascension
  99-105 F7.4   mas/yr  e_pmra  Uncertainty of pmra
 107-114 F8.4   mas/yr  pmdec   Proper motion in Declination
 116-122 F7.4   mas/yr  e_pmdec Uncertainty of pmdec
 124-130 F7.4   ---     pm_corr Correlation coefficient between pmra and pmdec
 132-139 F8.3   km/s    vrad    Heliocentric radial velocity
 141-147 F7.3   km/s    e_vrad  Uncertainty of vrad
------------------------------------------------------------------------

Format of the file rotation_curve.txt:
------------------------------------------------------------------------
   Bytes Format Units   Label   Explanations
------------------------------------------------------------------------
   1- 20 A20    ---     Name    Cepheid name
  22- 27 F6.3   kpc     R       Distance from the Galactic center
  29- 33 F5.3   kpc     e_R     Uncertainty of R
  35- 40 F6.2   km/s    v_rot   Circular velocity
  42- 46 F5.2   km/s    e_v_rot Uncertainty of v_rot
------------------------------------------------------------------------