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Credit:
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When making use of the data inside this archive, please cite:
Orkisz et al., 2017, A&A, doi:10.1051/0004-6361/201629220

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Archive URL:
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The original version of this archive is available at

    https://www.iram.fr/~pety/ORION-B/data/orionb-2017-orkisz.tar.xz

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Contents:
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This archive contains the data used in Orkisz et al. (2017). These data are
mostly derived from observations with the IRAM-30m telescope in the context
of the ORION-B project, cf., https://www.iram.fr/~pety/ORION-B/

All the maps are gridded in a custom set of coordinates, with the origin
set on the PDR of the Horsehead Nebula (RA-Dec coordinates provided in the
header), and with an axis position angle rotated by 14 degrees with respect
to the North-South orientation [1].  The FITS file headers are WCS
compliant, and our custom set of coordinates should be understood by any
standard FITS reader.

 I. The archive first contains three FITS maps of the velocity-weighted
    moments of the 13CO(J=1-0) line [3], observed with the IRAM-30m
    telescope in the context of the ORION-B project[1].

    The 13CO(J=1-0) cube is denoised by segmentation into continuous signal
    islands of S/N larger than 2. The moments are computed in the cloud's
    frame of reference, i.e. by substracting the systemic velocity
    (9.16±0.90 km/s) to the line velocity [3].

    The non-centered moments, centroid velocity map and FWHM velocity
    dispersion maps can be reconstructed from this data, as described in
    [3].

	! Filename       => [Unit]       Mathematical formula
	13co10-w0.fits   => [K.km/s    ] Sum_i T(i) dv
	13co10-w1c.fits  => [K.(km/s)^2] Sum_i T(i) x v^1(i) dv 
	13co10-w2c.fits  => [K.(km/s)^3] Sum_i T(i) x v^2(i) dv 

II. The archive also contains a FITS map of the Mach number in the western
    edge of the Orion B cloud. It is computed using the velocity dispersion
    measured with the 13CO(J=1-0) line profiles, and a speed of sound
    derived from a composite temperature map making use of a Herschel HGBS
    [4] dust temperature map and of the saturated 12CO(J=1-0) line peak
    temperature [1,3].

	! Filename => Description
	mach.fits  => Spatial distribution of the gaz Mach number

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References:
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[4] Schneider et al., 2013, ApJ, doi:10.1088/2041-8205/766/2/L17
[3] Orkisz et al., 2017, A&A, doi:10.1051/0004-6361/201629220
[2] Gratier et al., 2017, A&A, doi:10.1051/0004-6361/201629847
[1] Pety et al., 2017, A&A, doi:10.1051/0004-6361/201629862

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