Open Access

Table A.2

Derived properties of dense cores identified in HGBS maps of Orion B (template, full table only provided at the CDS).

rNO Core name RA2000 Dec2000 Rcore Mcore Tdust αBE Core type Comments
HGBS_J* (h m s) (° ′ ′′) (pc) (M) (K) (1021 cm−2) (1021 cm−2) (104 cm−3) (104 cm−3)
(1) (2) (3) (4) (5) (6) (7) ± (8) (9) ± (10) (11) (12) (13) (14) (15) (16) (17) (18) (19)
204 054126.7-014453 05:41:26.78 –01:44:53.2 2.1e-02 3.9e-02 8.80 2.07 11.1 0.6 59.0 68.2 233.9 24.8 38.2 242.5 0.0 2
428 054202.9-020745 05:42:02.93 –02:07:45.2 1.8e-02 3.7e-02 6.17 1.17 11.5 0.5 56.9 54.4 235.6 24.3 32.5 292.7 0.1 3
682 054316.0-025859 05:43:16.09 –02:58:59.0 2.9e-02 4.6e-02 0.05 0.02 15.7 1.7 0.2 0.3 0.7 0.1 0.1 0.5 11.4 1

Notes. Table entries are as follows: (1) core running number; (2) core name = HGBS_J prefix directly followed by a tag created from the J2000 sexagesimal coordinates; (3) and (4): right ascension and declination of core center; (5) and (6): geometrical average between the major and minor FWHM sizes of the core (in pc), as measured in the high-resolution column density map after deconvolution from the 18.2′′ HPBW resolution of the map and before deconvolution, respectively. (NB: both values provide estimates of the object’s outer radius when the core canbe approximately described by a Gaussian distribution, as is the case for a critical Bonnor-Ebert spheroid); (7) estimated core mass (M) assuming the dust opacity law advocated by Roy et al. (2014); (9) SED dust temperature (K); (8) and (10) statistical errors on the mass and temperature, respectively, including calibration uncertainties, but excluding dust opacity uncertainties; (11) peak H2 column density, at the resolution of the 500 μm data, derived from a graybody SED fit to the core peak flux densities measured in a common 36.3′′ beam at all wavelengths; (12) average column density, calculated as , where Mcore is the estimated core mass (col. 7), Rcore the estimated core radius prior to deconvolution (col. 6), and μ = 2.8; (13) average column density calculated in the same way as for col. 12 but using the deconvolved core radius (col. 5); (14) beam-averaged peak volume density at the resolution of the 500 μm data, derived from the peak column density (col. 11) assuming a Gaussian spherical distribution: ; (15) average volume density, calculated as , using the estimated core radius prior to deconvolution; (16) average volume density, calculated in the same way as for col. 15 but using the deconvolved core radius (col. 5); (17) bonnor-Ebert mass ratio: αBE = MBE,critMobs (see text for details); (18) core type: 1-starless, 2-prestellar, 3-protostellar, or 0-tentative core. The latter is a likely extragalactic source (see comments); (19) comments: “no SED fit”, “tentative bound”, “N region”.

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