EDP Sciences logo
Subscriber Authentication Point
Search
Menu
Home All issues Volume 568 (August 2014) A&A, 568 (2014) A65 Full HTML
Free Access

Table 6

Comparison between FIRS 2 and Orion KL.

FIRS 21 Orion KL2 References3
N (cm-2) N (cm-2)
CH3CN 1.3 × 1016 (13C)4 1.2 × 1016 (13C) Bell et al. (2014)
CH3OCHO 3.7 × 1016 2.9 × 1017 (13C) Carvajal et al. (2009), Haykal et al. (2014)
CH3OCDO 1.1 × 1015 1.0 × 1015 Margulès et al. (2010)
CH3CH2CN 8.8 × 1014 2.3 × 1016 (13C) Daly et al. (2013)
CH2CHCN <6.9 × 1015 2.4 × 1015 López et al. (2014)
CH3OH 2.5 × 1018 (13C) 1.1 × 1818 (13C) Kolesniková et al. (2014)
CH2DOH 1.4 × 1016 1.5 × 1015 Neill et al. (2013)
CH3CH2OH 2.2 × 1016 3.6 × 1016 Kolesniková et al. (2014)
H2CO 4.1 × 1016 (13C) 4.3 × 1016 (13C) Neill et al. (2013)
D2CO 3.4 × 1014 4.2 × 1013 Turner, B.E. (1990)
OCS 1.0 × 1017 (13C) 4.2 × 1016 (13C) Tercero et al. (2010)
HC3N 4.1 × 1014 7.7 × 1015 (13C) Esplugues et al. (2013b)
S18O <1.5 × 1015 2.2 × 1014 Esplugues et al. (2013a)
SO2 6.0 × 1015 1.1 × 1017 Esplugues et al. (2013a)
HNCO 1.6 × 1015 5.5 × 1015 (13C) Marcelino et al. (2009)
H2CS 1.4 × 1016 (13C) 3.3 × 1015 (13C) Tercero et al. (2010)
HDCS 1.8 × 1014 9.5 × 1013 Tercero et al. (2010)
HCOOH 6.9 × 1016 (13C) 4.9 × 1013 Turner, B.E. (1991)
CH3OCH3 2.9 × 1016 9.0 × 1015 Comito et al. (2005)
CH3CHO 5.0 × 1015 2.8 × 1014 Turner (1991)
NH2CHO* 3.0 × 1014 9.6 × 1014 Motiyenko et al. (2012)

Notes.

(1)

Average molecular column densities in a disk with a diameter of 1.4″. It is calculated with the expression N = Nc × (D(″) / 1.4″)2 + Nex, where Nc and D are the column density and size (diameter) of the compact component, respectively, and Nex is the column density of the beam filling component as shown in Table 3.

(2)

Average molecular column densities considering a region of 15″ of diameter towards Orion KL. We assume a beam filling factor of 0.44 for the hot core component (size = 10″).

(3)

References for the Orion column densities.

(4)

Derived from the 13C isotopologues assuming 12C/13C = 65 for FIRS 2 and 12C/13C = 50 for Orion.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.