Millimeter- and submillimeter-wave spectroscopy of thioformamide and interstellar search toward Sgr B2(N)

Home

All issues

Volume 642 (October 2020)

A&A, 642 (2020) A29

Full HTML

Open Access

Table 4.

Parameters of our best-fit LTE model of selected complex organic molecules toward Sgr B2(N2) and upper limit for thioformamide.

Molecule	Status ^(a)	N_det^(b)	θ_s^(c)	T_rot^(d)	N^(e)	F_vib^(f)	ΔV^(g)	V_off^(h)	⁽ⁱ⁾
			(″)	(K)	(cm⁻²)		(km s⁻¹)	(km s⁻¹)
CH₃OH ^(j)^,^(k)^⋆	d	60	1.4	160	4.0 (19)	1.00	5.4	−0.2	1
CH₃SH ^(j)	d	13	1.4	180	3.4 (17)	1.00	5.4	−0.5	118

NH₂CHO ^(j)^,^(k)^⋆	d	43	0.8	200	2.6 (18)	1.17	5.5	0.2	1
NH₂CHS, v = 0	n	0	0.8	200	< 2.8 (15)	1.12	5.5	0.2	> 919

Notes.

^(a)

d: detection, n: nondetection.

^(b)

Number of detected lines (conservative estimate, see Sect. 3 of Belloche et al. 2016). One line of a given species may mean a group of transitions of that species that are blended together.

^(c)

Source diameter (FWHM).

^(d)

Rotational temperature.

^(e)

Total column density of the molecule. x (y) means x × 10^y.

^(f)

Correction factor that was applied to the column density to account for the contribution of vibrationally excited states, in the cases where this contribution was not included in the partition function of the spectroscopic predictions.

^(g)

Linewidth (FWHM).

^(h)

Velocity offset with respect to the assumed systemic velocity of Sgr B2(N2), V_sys = 74 km s⁻¹.

⁽ⁱ⁾

Column density ratio, with N_ref the column density of the previous reference species marked with a ⋆.

^(j)

The parameters were derived from the EMoCA survey by Müller et al. (2016) and Belloche et al. (2017).

^(k)

For CH₃OH and NH₂CHO, we report the parameters derived from the vibrationally excited states v_t = 1 and v₁₂ = 1, respectively.

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.