Laboratory characterization and astrophysical detection of vibrationally excited states of vinyl cyanide in Orion-KL

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Volume 572 (December 2014)

A&A, 572 (2014) A44

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Table 8

Column density ratios and molecular abundances.

Molecule	Orion-KL		Sgr B2		G34.3+0.2		TMC-1
	X	R	X	R	X	R	X	R

CH₂CHCN	(2.0 ± 0.6) × 10^-8^†	...	6.2 × 10^-8^j	...	3.0 × 10^-10ⁿ	...	1.0 × 10^-9^p	...
	1.5 × 10^-9^a		6.0 × 10^-8^k
	1.8 × 10^-9^b

CH₃CN	(1.0 ± 0.3) × 10^-7^†^d	0.20^†^d	3.0 × 10^-8^k	0.40^e	...	...	7.5 × 10^-10^p	1.3^p
	4.0 × 10^-9^a	0.39^a		2.0^k
	7.8 × 10^-9^b	0.23^b		3.4^l
	5.1 × 10^-9^c	1.7^e		0.40^m
		0.18–1.8^f		0.37^o
		0.48^g

CH₃CH₂CN	(1.8 ± 0.5) × 10^-7^†^h	0.11^†^h	6.0 × 10^-10^k*	0.72^e	1.0 × 10^-8ⁿ	0.20ⁿ	...	>2.00^q
	3.0 × 10^-9^a	0.50^a		11^l
	9.8 × 10^-9^b	0.18^b		0.67^m
		0.15^e		1.7ⁿ
		0.14^f		0.40^o
		0.06^g

HCCCN	(7 ± 2) × 10^-9^†ⁱ	2.9^†ⁱ	5.0 × 10^-9^k	0.13^e	...	...	7.5 × 10^-8^p	0.01^p
	1.8 × 10^-9^a	0.86^a		12^k
	1.6 × 10^-9^b	1.1^b		61^o
	1.8 × 10^-9^c	2.11^e
		0.6-1.5^f
		0.16^g

NH₂CN	≤(7 ± 2) × 10^-11^†	≥286^†	9.0 × 10^-11^k*	1.4^e	...	...	...	...
		30^e		14^o

Notes. Abundances (X) and column density ratios between vinyl cyanide and some studied cyanides (R) in Orion-KL and other sources.

^(†)

Values from this work.

^(a)

Sutton et al. (1995), hot core, telescope beam ~13.7′′.

^(b)

Blake et al. (1987), hot core, telescope beam ~30′′.

^(c)

Persson et al. (2007), hot core, source size 10”.

^(d)

Bell et al. (2014), hot core (different components between 5–10′′) + plateau (10′′).

^(e)

Turner (1991).

^(f)

Johansson et al. (1984).

^(g)

Schilke et al. (1997).

^(h)

Daly et al. (2013), hot core (4–10′′) and mix hot core-plateau (25′′).

⁽ⁱ⁾

Esplugues et al. (2013b) hot core (7–10′′) and plateau (20′′).

^(j)

Müller et al. (2008).

^(k)

Nummelin et al. (2000) small source-size averaged.

^(k*)

Nummelin et al. (2000) beam averaged.

^(l)

Remijan et al. (2005).

^(m)

Belloche et al. (2009).

⁽ⁿ⁾

Mehringer & Snyder (1996).

^(o)

Belloche et al. (2013).

^(p)

Ohishi & Kaifu (1998).

^(q)

Minh & Irvine (1991).

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