308 citations · 2k across the 40 of their papers we have counts for
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Discovery of the elusive thioketenylium, HCCS+, in TMC-1
C. Cabezas, M. Agundez, N. Marcelino +6
We report the detection in TMC-1 of the cation HCCS+ (3Sigma-), which is the protonated form of the widespread radical CCS. This is the first time that a protonated radical has bee…
New deuterated species in TMC-1: Detection of CH2DC4H with the QUIJOTE line survey
C. Cabezas, R. Fuentetaja, E. Roueff +6
We report the first detection in space of the single deuterated isotopologue of methyldiacetylene, CH2DC4H. A total of 12 rotational transitions, with J = 8-12 and Ka = 0 and 1, we…
Detection of the propargyl radical at lambda 3 mm
M. Agundez, N. Marcelino, C. Cabezas +4
We report the detection of the propargyl radical (CH2CCH) in the cold dark cloud TMC-1 in the lambda 3 mm wavelength band. We recently discovered this species in space toward the s…
Discovery of HCCCO and C5O in TMC-1 with the QUIJOTE line survey
J. Cernicharo, M. Agundez, C. Cabezas +5
We report on the detection, for the first time in space, of the radical HCCCO and of pentacarbon monoxide, C5O. The derived column densities are (1.6+/-0.2)e11 cm-2 and (1.5+/-0.2)…
Ultra-deep 31.0-50.3 GHz spectral survey of IRC+10216
J. R. Pardo, J. Cernicharo, B. Tercero +8
Context. IRC+10216, the carbon-rich envelope of the asymptotic giant branch (AGB) star CW Leo, is one of the richest molecular sources in the sky. Available spectral surveys below…
Laboratory observation and astronomical search of 1-cyano propargyl radical, HCCCHCN
C. Cabezas, M. Nakajima, C. H. Chang +3
The reaction between carbon atoms and vinyl cyanide, CH2CHCN, is a formation route to interstellar 3-cyano propargyl radical, CH2C3N, a species that has recently been discovered in…
Discovery of two isomers of ethynyl cyclopentadiene in TMC-1: Abundances of CCH and CN derivatives of hydrocarbon cycles
J. Cernicharo, M. Agundez, R. I. Kaiser +5
We report the detection of two isomers of ethynyl cyclopentadiene (c-C5H5CCH), namely 1- and 2-ethynyl-1,3-cyclopentadiene, in the direction of TMC-1. We derive column densities of…
Discovery of interstellar 3-cyano propargyl radical, CH2CCCN
Carlos Cabezas, Marcelino Agundez, Nuria Marcelino +4
We report the first detection in interstellar space of the 3-cyano propargyl radical (CH2C3N). This species was observed in the cold dark cloud TMC-1 using the Yebes 40m telescope.…
Discovery of benzyne, o-C6H4, in TMC-1 with the QUIJOTE line survey
J. Cernicharo, M. Agundez, R. I. Kaiser +5
We report the detection, for the first time in space, of a new non-functionalised hydrocarbon cycle in the direction of TMC-1: o-C6H4 (ortho-benzyne). We derive a column density fo…
Magnesium radicals MgCN and MgCH in IRC+10216
J. R. Pardo, C. Cabezas, J. P. Fonfría +5
After the previous discovery of MgCN and MgCH in IRC+10216, a deeper Q-band (31.0-50.3 GHz) integration on this source had revealed two additional series of harmonically re…
Interstellar detection of the simplest aminocarbyne, H2NC: an ignored but abundant molecule
C. Cabezas, M. Agundez, N. Marcelino +3
We report the first identification in space of H2NC, a high-energy isomer of H2CN that has been largely ignored in chemical and astrochemical studies. The observation of various un…
Detection of deuterated methylcyanoacetylene, CHDCN, in TMC-1
C. Cabezas, E. Roueff, B. Tercero +4
We report the first detection in space of the single deuterated isotopologue of methylcyanoacetylene, CHDCN. A total of fifteen rotational transitions, with = 8-12 and…
The sulphur saga in TMC-1: Discovery of HCSCN and HCSCCH
J. Cernicharo, C. Cabezas, Y. Endo +5
We report the detection, for the first time in space, of cyano thioformaldehyde (HCSCN) and propynethial (HCSCCH) towards the starless core TMC-1. Cyano thioformaldehyde presents a…
Pure hydrocarbon cycles in TMC-1: Discovery of ethynyl cyclopropenylidene, cyclopentadiene and indene
J. Cernicharo, M. Agundez, C. Cabezas +4
We report the detection for the first time in space of three new pure hydrocarbon cycles in TMC-1: c-C3HCCH (ethynyl cyclopropenylidene), c-C5H6 (cyclopentadiene) and c-C9H8 (inden…
O-bearing complex organic molecules at the cyanopolyyne peak of TMC-1: detection of C2H3CHO, C2H3OH, HCOOCH3, and CH3OCH3
M. Agundez, N. Marcelino, B. Tercero +3
We report the detection of the oxygen-bearing complex organic molecules propenal (C2H3CHO), vinyl alcohol (C2H3OH), methyl formate (HCOOCH3), and dimethyl ether (CH3OCH3) toward th…
First detection of doubly deuterated methyl acetylene (CHD2CCH and CH2DCCD)
M. Agundez, E. Roueff, C. Cabezas +2
We report the first detection in space of the two doubly deuterated isotopologues of methyl acetylene. The species CHD2CCH and CH2DCCD were identified in the dense core L483 throug…
TMC-1, the starless core sulfur factory: Discovery of NCS, HCCS, H2CCS, H2CCCS, and C4S and detection of C5S
J. Cernicharo, C. Cabezas, M. Agundez +7
We report the detection of the sulfur-bearing species NCS, HCCS, H2CCS, H2CCCS, and C4S for the first time in space. These molecules were found towards TMC-1 through the observatio…
Discovery of the propargyl radical (CH2CCH) in TMC-1: one of the most abundant radicals ever found and a key species for cyclization to benzene in cold dark clouds
M. Agundez, C. Cabezas, B. Tercero +4
We present the first identification in interstellar space of the propargyl radical (CH2CCH). This species was observed in the cold dark cloud TMC-1 using the Yebes 40m telescope. T…
Discovery of allenyl acetylene, H2CCCHCCH, in TMC-1. A study of the isomers of C5H4
J. Cernicharo, C. Cabezas, M. Agundez +7
We present the discovery in TMC-1 of allenyl acetylene, H2CCCHCCH, through the observation of nineteen lines with a signal-to-noise ratio ~4-15. For this species, we derived a rota…
Discovery of CH2CHCCH and detection of HCCN, HC4N, CH3CH2CN, and, tentatively, CH3CH2CCH in TMC-1
J. Cernicharo, M. Agundez, C. Cabezas +7
We present the discovery in TMC-1 of vinyl acetylene, CH2CHCCH, and the detection, for the first time in a cold dark cloud, of HCCN, HC4N, and CH3CH2CN. A tentative detection of CH…
Space and laboratory discovery of HC3S+
J. Cernicharo, C. Cabezas, Y. Endo +5
We report the detection in TMC-1 of the protonated form of C3S. The discovery of the cation HC3S+ was carried through the observation of four harmonically related lines in the Q ba…
Discovery of the acetyl cation, CH3CO+, in space and in the laboratory
J. Cernicharo, C. Cabezas, S. Bailleux +10
Using the Yebes 40m and IRAM 30m radiotelescopes, we detected two series of harmonically related lines in space that can be fitted to a symmetric rotor. The lines have been seen to…