EDP Sciences logo
Subscriber Authentication Point
Search
Menu
Home All issues Volume 593 (September 2016) A&A, 593 (2016) A94 Full HTML
Free Access

Table 2

Column density calculations.

Molecule LTE LVG1
6.5 km s-1 7.0 km s-1 Total 6.5 km s-1 7.0 km s-1 Total
Trot(K) NX(cm-2) Trot(K) NX(cm-2) NX(cm-2) NX(cm-2) NX(cm-2) NX(cm-2)
Ions Ions
HC18O+ 4.4 1.7 4.2 1.5 3.2 × 1011 2.0 1.4 3.4 × 1011
D13CO+ 7.8 1.2 4.5 3.9 5.1 × 1011 2.0 4.5 6.5 × 1011
HOCO+ 11.9 5.2 10.7 2.4× 1011 7.6 × 1011 5.2× 1011 3.0× 1011 8.2 × 1011
DOCO+ 11a 7.0× 1010 11a 4.0× 1010 1.1 × 1011 9.0× 1010 5.0× 1010 1.1 × 1011
SO+ 9.0 7.6× 1011 8.3 4.8× 1011 1.2 × 1012
HCS+ 10.6 2.1× 1011 7.5 6.2× 1011 8.3 × 1011 5.5× 1011 5.5× 1011 1.1 × 1012
DCS+ 10b 5.0× 1010 5.0 × 1010 4.5× 1010 4.5 × 1010
HCNH+ 29.0 5.1× 1012 8.9 3.8× 1012 8.9 × 1012 3.7× 1012 4.0× 1012 7.7 × 1012
H2COH+ 10b 2.0× 1011 2.0× 1011
CO+ 10b <6.0 × 1010 <6.0 × 1010
HOC+ 10b <2.0 × 1010 <2.0 × 1010
Neutrals Neutrals
13C18O 5.5 2.4× 1013 10.9 5.2× 1013 7.6 × 1013 3.0× 1013 6.0× 1013 9.0 × 1013
o-H213CO 5.5 6.1× 1011 5.2 4.9× 1011 1.1 × 1012 1.1× 1012 1.3× 1012 2.4 × 1012
13CS 7.1 7.8× 1011 3.2 3.1× 1012 3.9 × 1012 1.3× 1012 9.0× 1011 2.2 × 1012
S18O 6.8 1.6× 1012 8.2 0.6× 1012 2.3 × 1012 2.2× 1012 8.0× 1011 3.0 × 1012
33SO 12.3 1.6× 1012 18.9 0.7× 1012 2.3 × 1012 3.8× 1012 6.0× 1011 4.4 × 1012
34SO2 5.8 1.1× 1012 1.1× 1012
SO2 10.1 7.9× 1012 10.2 2.9× 1012 1.1 × 1013 1.6× 1013 4.5× 1012 2.0 × 1013
OC34S 8.7 1.2× 1012 1.0× 1012
OCS 11.7 1.5× 1013 20.4 4.9× 1012 1.9 × 1013 1.7× 1013 8.0× 1011 1.7 × 1013
H213CSc 7.4 1.6× 1011
CCS 8.3 5.9× 1012 8.2 3.6× 1012 9.5 × 1012 9.3× 1012 5.2× 1012 1.4 × 1013
CC34S 3.5× 1011 2.5× 1011 6.0 × 1011
CCCS 8.6 2.2×1012
o-H2S 10d 7.0× 1012 10 3.0× 1012 1.0 × 1013
NS 10d 5.4× 1012 10 9.0× 1012 1.4 × 1013

Notes.

(1)

LVG calculations assuming Tk = 12 K and n(H2) = 105 cm-3;

(a)

assuming the rotation temperature of HOCO+;

(b)

assuming the rotation temperature of HCS+;

(c)

in this case the ortho and para species are treated together (ortho-to-para(OTP) = 3) and we assumed the rotation temperature calculated for H2CS by Marcelino et al. (2005);

(d)

reasonable guess for the rotation temperature.

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.