Organic molecules, ions, and rare isotopologues in the remnant of the stellar-merger candidate, CK Vulpeculae (Nova 1670)

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Table 1

Identified molecules.

2 atoms	3 atoms	4 atoms

AlF	CCH (¹³CCH, C¹³CH)	NH₃^a
CN (¹³CN, C¹⁵N, ¹³C¹⁵N)	H₂S (HS?)	H₂CO (HCO)
CO (¹³CO, C¹⁸O, ¹³C¹⁸O, C¹⁷O?)	HCN (H¹³CN, HC¹⁵N, H¹³C¹⁵N)	HNCO^b
CS (¹³CS, C³⁴S, C³³S?)	HCO⁺ (H¹³CO⁺, HC¹⁸O⁺?)	H₂CS
NO	HNC (HN¹³C, H¹⁵NC, H¹⁵N¹³C?)
NS	N₂H⁺ (¹⁵NNH⁺, N¹⁵NH⁺?)
PN	SO₂
SO (³⁴SO)
SiO (²⁹SiO, ³⁰SiO, Si¹⁸O, Si¹⁷O?)
SiN?^c,d
SiS

5 atoms	6 atoms	7 atoms

CH₂NH (¹³CH₂NH)	CH₃CN (¹³CH₃CN)	CH₃NH₂ (¹³CH₃NH₂?)^d
HC₃N (H¹³CCCN, HC¹³CCN, HCC¹³CN)	CH₃OH (¹³CH₃OH, CHOH?)

Notes. In parenthesis are rare isotopologues which were identified in addition to the main one. The presence of species followed by ? is questionable.

^(a)

Detected at radio wavelengths (Kamiński et al. 2015a).

^(b)

Most features of HN¹³CO and HNCO overlap and the presence of the former could not be verified.

^(c)

Only two features of SiN were detected.

^(d)

No spectroscopic data available for isotopologues containing ¹⁵N.

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