Access to Astronomical Catalogues

J/MNRAS/424/2442    Milky Way Project First Data Release     (Simpson+, 2012)
The Milky Way Project First Data Release: a bubblier Galactic disc.
    Simpson R.J., Povich M.S., Kendrew S., Lintott C.J., Bressert E.,
    Arvidsson K., Cyganowski C., Maddison S., Schawinski K., Sherman R.,
    Smith A.M., Wolf-Chase G.
   <Mon. Not. R. Astron. Soc., 424, 2442-2460 (2012)>
   =2012MNRAS.424.2442S
ADC_Keywords: H II regions ; Infrared sources ; Interstellar medium ;
              Molecular clouds
Keywords: stars: formation - dust, extinction - H II regions - infrared: ISM


Abstract:
    We present a new catalogue of 5106 infrared bubbles created through
    visual classification via the online citizen science website The Milky
    Way Project. Bubbles in the new catalogue have been independently
    measured b at least five individuals, producing consensus parameters
    for their position, radius, thickness, eccentricity and position
    angle. Citizen scientists - volunteers recruited online and taking
    part in this research - have independently rediscovered the
    locations of at least 86 percent of three widely used catalogues of
    bubbles and HII regions whilst finding an order of magnitude
    more objects. 29 per cent of the Milky Way Project catalogue bubbles
    lie on the rim of a larger bubble, or have smaller bubbles located
    within them, opening up the possibility of better statistical studies
    of triggered star formation. Also outlined is the creation of a heat
    map of star formation activity in the Galactic plane. This online
    resource provides a crowd-sourced map of bubbles and arcs in the Milky
    Way, and will enable better statistical analysis of Galactic star
    formation sites.

Description:
    Physical parameters for 5106 visually identified infrared bubbles,
    located in Spitzer GLIMPSE/MIPSGAL data.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
mwplarge.dat     113     3744   Large-bubble catalogue (table2 of the paper)
mwpsmall.dat      59     1362   Small-bubble catalogue (table3 of the paper)


See also:
   J/ApJ/649/759 : Bubbles in the galactic disk (Churchwell+, 2006)
   J/ApJ/670/428 : Bubbles in the galactic disk. II. (Churchwell+, 2007)
   J/A+A/537/A1  : Infrared fluxes of HII regions and PNe (Anderson+, 2012)
   J/AJ/139/1542 : A catalog of MIPSGAL disk and ring sources (Mizuno+, 2010)


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

   Bytes Format Units   Label     Explanations

   1-  3  A3    ---     ---       [MWP]
   4- 18  A15   ---     MWP       Catalog identification, 1GLLLll+Bbbbbb
  20- 39  A20   ---     ONames    Other name(s) (Churchwell IDs) (G3)
  41- 47  F7.3  deg     GLON      Galactic Longitude
  49- 54  F6.3  deg     GLAT      Galactic Latitude
  56- 61  F6.3  arcmin  iXdiam    Inner X Diameter
  63- 69  F7.3  arcmin  iYdiam    Inner Y Diameter
  71- 76  F6.3  arcmin  oXdiam    Outer X Diameter
  78- 82  F5.2  arcmin  Reff      Effective Radius
  84- 88  F5.2  arcmin  Thick     Effective Thickness
  90- 94  F5.3  ---     Ecc       Eccentricity of ellipse
  96- 98  I3    deg     PA        Position Angle (from vertical of Y axis)
 100-103  F4.2  ---     Hit       Hit rate (G1)
 105-109  F5.3  arcmin  Disp      Dispersion on position
 111-113  A3    ---     Flag      Hierachy flags (G2)


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

   Bytes Format Units   Label     Explanations

   1-  3  A3    ---     ---       [MWP]
   4- 19  A16   ---     MWP       Catalog identification, 1GLLLll+BbbbbbS
  21- 24  A4    ---     ONames    Other name(s) (Churchwell ID) (G3)
  26- 32  F7.3  deg     GLON      Galactic Longitude
  33- 38  F6.3  deg     GLAT      Galactic Latitude
  39- 42  F4.2  arcmin  Width     Width
  44- 47  F4.2  arcmin  Height    Height
  49- 52  F4.2  arcmin  Reff      Effective radius
  54- 57  F4.2  ---     Hit       Hit rate (G1)
      59  I1    ---     Flag      ? Hierachy flags (G2)


Global notes:

Note (G1): The bubble's "hit rate" is the ratio of the number of qualifying
     bubbles drawn to the number of times the bubble was seen by users on
     the MWP website. The hit rate gives a measure of consensus among users
     that a bubble is present in the data.
Note (G2): Hierachy flags as follows:
   1 = bubbles identified as having smaller bubbles on their rim 
   2 = bubbles located within a larger bubble
Note (G3): see Churchwell et al.·2006, Cat. J/ApJ/649/759; and
   2007, Cat. J/ApJ/670/428


Acknowledgements:
    Robert Simpson, robert.simpson(at)astro.ox.ac.uk
(End)        Robert Simpson [Oxford, UK],  Patricia Vannier [CDS]    14-Nov-2012