Ultra-deep 31.0–50.3 GHz spectral survey of IRC+10216

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Table 1.

Molecules and total number of spectral features (N) and lines (L) detected in this work for each one of them. μ is the molecule electric dipole moment in Debyes (1 Debye = 3.33564 × 10⁻³⁰ C m).

Molecule	μ	N/L	References for spectroscopy	Molecule	μ	N/L	References for spectroscopy
HCN	2.985	3/3	Zelinger et al. (2003), Ebenstein & Muenter (1984)	HC₃N	3.732	8/10	Mbosei et al. (2000), Thorwirth et al. (2000)
H¹³CCCN	3.732	2/2	Creswell et al. (1977), Mallinson & de Zafra (1978), Thorwirth et al. (2001)	HC¹³CCN	3.732	2/2	Same as H¹³CCCN.
HCC¹³CN	3.732	2/2	Same as H¹³CCCN.	HCCNC	2.957	2/2	Guarnieri et al. (1992), Gripp et al. (2000)
HCCN¹³C	2.957	2/2	Same as HCCNC	HNCCC	5.665	2/2	Kawaguchi et al. (1992), Hirahara et al. (1993), Botschwina et al. (1992)
HC₅N	4.330	20/22	Bizzocchi et al. (2004), Alexander et al. (1976)	H¹³CCCCCN	4.330	8/8	Same as HC₅N.
HC¹³CCCCN	4.330	8/8	Same as HC₅N.	HCC¹³CCCN	4.330	7/7	Same as HC₅N.
HCCC¹³CCN	4.330	7/7	Same as HC₅N.	HCCCC¹³CN	4.330	8/8	Same as HC₅N.
HC₇N	4.820	72/74	McCarthy et al. (2000), Degli Esposti & Bizzocchi (2004), Botschwina et al. (1997)	H¹³CCCCCCCN	4.820	10/11	McCarthy et al. (2000), Botschwina et al. (1997)
HC¹³CCCCCCN	4.820	8/8	Same as H¹³CCCCCCCN	HCC¹³CCCCCN	4.820	10/10	Same as H¹³CCCCCCCN
HCCC¹³CCCCN	4.820	10/10	Same as H¹³CCCCCCCN	HCCCC¹³CCCN	4.820	6/6	Same as H¹³CCCCCCCN
HCCCCC¹³CCN	4.820	11/11	Same as H¹³CCCCCCCN	HCCCCCC¹³CN	4.820	9/9	Same as H¹³CCCCCCCN
HC₉N	5.200	80/80	McCarthy et al. (2000), Botschwina et al. (1997), Pardo et al. (2020)	HCCN	3.600	1/1	Allen et al. (2001), Aoki & Ikuta (1993)
l-HC₄N	4.330	6/6	Tang et al. (1999), Ikuta et al. (2000)	o-H₂C₄	4.457	6/6	Killian et al. (1990), Oswald & Botschwina (1995)
p-H₂C₄	4.457	4/5	Killian et al. (1990), Oswald & Botschwina (1995)	o-H₂C₃	4.100	2/2	Vrtilek et al. (1990)
p-H₂C₃	4.100	1/1	Vrtilek et al. (1990)	C₃H	3.550	6/6	Yamamoto et al. (1990a), Gottlieb et al. (1985), Kaifu et al. (2004), Woon (1995)
C₄H	2.100	18/19	Guélin et al. (1982), Gottlieb et al. (1983), Chen et al. (1995), Oyama et al. (2020)	C₅H	4.881	12/16	McCarthy et al. (1999), Woon (1995)
C₆H	5.540	56/56	Linnartz et al. (1999), Woon (1995)	C₇H	5.945	23/33	McCarthy et al. (1997), Woon (1995)
C₈H	6.500	31/46	McCarthy et al. (1996), McCarthy et al. (1999)	C₃N	2.850	4/4	McCarthy et al. (1995), Guélin et al. (1982), Gottlieb et al. (1983)
CC¹³CN	2.850	4/6	McCarthy et al. (1995), McCarthy et al. (2003)	C¹³CCN	2.850	4/4	Same as CC¹³CN
¹³CCCN	2.850	5/6	Same as CC¹³CN	C₅N	3.385	4/4	Kasai et al. (1997), Botschwina (1996)
C₅N⁻	5.200	6/6	Cernicharo et al. (2008)	C₆H⁻	8.200	7/8	McCarthy et al. (2006), Blanksby et al. (2001)
C₈H⁻	10.400	13/13	Gupta et al. (2007), Blanksby et al. (2001)	c-C₃H₂ (ortho)	3.430	2/2	Thaddeus et al. (1985), Bogey et al. (1986), Vrtilek et al. (1987), Spezzano et al. (2012), Kanata et al. (1987)
c-C₃H₂ (para)	3.430	2/2	Same as c-C₃H₂ (ortho)	SiS	1.735	1/1	Müller et al. (2007), Tiemann et al. (1972), Sanz et al. (2003)
²⁹SiS	1.735	1/1	Same as ⁽²⁸⁾SiS.	³⁰SiS	1.735	1/1	Same as ⁽²⁸⁾SiS.
Si³³S	1.735	1/1	Same as ⁽²⁸⁾SiS.	Si³⁴S	1.735	1/1	Same as ⁽²⁸⁾SiS.
SiO	3.098	1/1	Manson et al. (1977), Mollaaghababa et al. (1991), Sanz et al. (2003), Cho & Saito (1998), Raymonda et al. (1970)	²⁹SiO	3.098	1/1	Same as ⁽²⁸⁾SiO.
³⁰SiO	3.098	1/1	Same as ⁽²⁸⁾SiO.	Si¹⁷O	3.098	1/1	Same as ⁽²⁸⁾SiO.
SiC₂	2.393	2/2	Gottlieb et al. (1989), Suenram et al. (1989)	Si¹³CC	2.393	2/2	Cernicharo et al. (1991)
²⁹SiC₂	2.393	1/1	Suenram et al. (1989), Cernicharo et al. (1991), Kokkin et al. (2011)	³⁰SiC₂	2.393	2/2	Same as ²⁹SiC₂
SiC₄	6.420	6/6	Ohishi et al. (1989), Gordon et al. (2000)	²⁹SiC₄	6.420	5/5	Same as ²⁹SiC₄
SiC₆	8.220	7/7	Gordon et al. (2000)	CS	1.958	1/1	Gottlieb et al. (2003), Winnewisser & Cook (1968)
¹³CS	1.958	1/1	Same as CS.	C³³S	1.958	1/1	Same as CS.
C³⁴S	1.958	1/1	Same as CS.	C³⁶S	1.958	1/1	Same as CS.
CCS	2.855	4/4	Saito et al. (1987), Yamamoto et al. (1990b), Lovas et al. (1992), Lee (1997)	C₃S	3.704	3/3	Yamamoto et al. (1987), Tang & Saito (1995), Lovas et al. (1992), Ohshima & Endo (1992), Suenram & Lovas (1994)
NaCN	8.850	7/8	Van Vaals et al. (1984), Halfen & Ziurys (2011)	MgCN	5.150	2/2	Anderson et al. (1994), Hirano et al. (2002)
MgNC	5.308	4/4	Kawaguchi et al. (1993), Steimle & Bousquet (2001)	MgC₃N	6.250	14/14	Cernicharo et al. (2019)
MgC₅N	7.300	20/30	Pardo et al. (2021)	MgC₄H	2.100	10/10	Cernicharo et al. (2019)
MgC₆H	2.500	23/30	Pardo et al. (2021)	CH₃CN	3.925	2/3	Pavone et al. (1990), Cazzoli & Puzzarini (2006), Simeckova et al. (2004), Müller et al. (2009), Anttila et al. (1993)
CH₃C₃N	4.750	5/5	Moises et al. (1982), Bester et al. (1983), Bester et al. (1984)	KCl	10.270	2/2	Clouser & Gordy (1964), Caris et al. (2004)
NaCl	9.002	1/1	Clouser & Gordy (1964), Caris et al. (2002), Timp et al. (2012)	Na³⁷Cl	9.002	1/1	Same as NaCl.
AlCl	1.500	1/1	Wyse & Gordy (1972), Lide (1965), Hensel et al. (1993)	U Lines		57

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