Free Access
Issue
A&A
Volume 578, June 2015
Article Number A102
Number of page(s) 16
Section Stellar structure and evolution
DOI https://doi.org/10.1051/0004-6361/201425420
Published online 11 June 2015

Online material

Appendix A: Tables

In Tables A.1A.7 we list the parameters of all the CH3OH maser features detected toward the seven massive star-forming regions observed with the EVN. The tables are organized as follows. The name of the feature is reported in Col. 1 and the group to which they belong in Col. 2. The positions, Cols. 3 and 4, refer to the maser feature used for self-calibration. The peak flux density, the LSR velocity (Vlsr), and the FWHM (ΔvL) of the total intensity spectra of the maser features are reported in Cols. 5 to 7. The peak flux density, Vlsr, and ΔvL are obtained using a Gaussian fit. The mean linear polarization fraction (Pl) and the mean linear polarization angles (χ) that are measured across the spectrum are reported in Cols. 8 and 9. The best-fitting results obtained by using a model based on the

radiative transfer theory of methanol masers for Γ + Γν = 1 s-1 (Vlemmings et al. 2010; Surcis et al. 2011b) are reported in Cols. 10 (the intrinsic thermal linewidth) and 11 (the emerging brightness temperature). The errors were determined by analyzing the full probability distribution function. The angle between the magnetic field and the maser propagation direction (θ, Col. 14) is determined by using the observed Pl and the fit emerging brightness temperature. The errors for θ were also determined by analyzing the full probability distribution function. The value of θ in bold indicates that | θ+ − 55°| < | θ − 55°|, that is, the magnetic field is assumed to be parallel to the linear polarization vector (see Sect. 3). The circular polarization fraction (PV) and the Zeeman splitting (ΔVZ) are listed in Cols. 12 and 13. The Zeeman splitting is determined by fitting the V Stokes spectra by using the best-fitting results (ΔVi and TbΔΩ).

Table A.1

Parameters of the 6.7 GHz CH3OH maser features detected in G24.78+0.08.

Table A.2

Parameters of the 6.7 GHz CH3OH maser features detected in G25.65+1.05.

Table A.3

Parameters of the 6.7 GHz CH3OH maser features detected in G29.86-0.04.

Table A.4

Parameters of the 6.7 GHz CH3OH maser features detected in G35.03+0.35.

Table A.5

Parameters of the 6.7 GHz CH3OH maser features detected in G37.43+1.51.

Table A.6

Parameters of the 6.7 GHz CH3OH maser features detected in G174.20-0.08.

Table A.7

Parameters of the 6.7 GHz CH3OH maser features detected in G213.70-12.6 (Mon R2–IRS 3/Star A).


© ESO, 2015

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