Ionized Carbon around IRC+10216

2022-06-17T17:15:56+02:00Tags: |

Authors: Reach, William T.; Ruaud, Maxime; Wiesemeyer, Helmut; Riquelme, Denise; Le Ngoc Tram; Cernicharo, Jose; Smith, Nathan; Chambers, Edward T. Journal: ASTROPHYSICAL JOURNAL Publication date: 2022/02/01 DOI: 10.3847/1538-4357/ac4162 Abstract: Asymptotic giant branch stars create a rich inventory of molecules in their envelopes as they lose mass during later stages of their evolution. These molecules cannot [...]

New deuterated species in TMC-1: Detection of CH2DC4H with the QUIJOTE line survey ⋆

2022-06-17T17:15:56+02:00Tags: |

Authors: Cabezas, C.; Fuentetaja, R.; Roueff, E.; Agundez, M.; Tercero, B.; Marcelino, N.; Pardo, J. R.; de Vicente, P.; Cernicharo, J. Journal: ASTRONOMY & ASTROPHYSICS Publication date: 2022/01/10 DOI: 10.1051/0004-6361/202142814 Abstract: We report the first detection in space of the single deuterated isotopologue of methyldiacetylene, CH2DC4H. A total of 12 rotational transitions, with J = [...]

[C II] 158 mu m line emission from Orion A II. Photodissociation region physics

2022-06-17T17:15:56+02:00Tags: |

Authors: Pabst, C. H. M.; Goicoechea, J. R.; Hacar, A.; Teyssier, D.; Berne, O.; Wolfire, M. G.; Higgins, R. D.; Chambers, E. T.; Kabanovic, S.; Guesten, R.; Stutzki, J.; Kramer, C.; Tielens, A. G. G. M. Journal: ASTRONOMY & ASTROPHYSICS Publication date: 2022/02/04 DOI: 10.1051/0004-6361/202140805 Abstract: Context. The [C II] 158 mu m fine-structure line [...]

Detection of the S(1) Rotational Line of H-2 toward IRC+10216: A Simultaneous Measurement of the Mass-loss Rate and CO Abundance

2022-06-17T17:15:54+02:00Tags: |

Authors: Fonfria, J. P.; DeWitt, C. N.; Montiel, E. J.; Cernicharo, J.; Richter, M. J. Journal: ASTROPHYSICAL JOURNAL LETTERS Publication date: 2022/03/01 DOI: 10.3847/2041-8213/ac5a58 Abstract: We report the first detection of the S(1) pure rotational line of ortho-H-2 at 17.04 mu m in an asymptotic giant branch star, using observations of IRC+10216 with the Echelon-cross-echelle [...]

Discovery of a new molecular ion, HC7NH+, in TMC-1 & x22c6;

2022-06-17T17:15:53+02:00Tags: |

Authors: Cabezas, C.; Agundez, M.; Marcelino, N.; Tercero, B.; Fuentetaja, R.; de Vicente, P.; Cernicharo, J. Journal: ASTRONOMY & ASTROPHYSICS Publication date: 2022/03/23 DOI: 10.1051/0004-6361/202142972 Abstract: We report the detection of the protonated form of HC7N in TMC-1. The discovery of the cation HC7NH+ was carried out via the observation of nine harmonically related lines [...]

Discovery of the elusive thioketenylium, HCCS+, in TMC-1

2022-06-17T17:15:53+02:00Tags: |

Authors: Cabezas, C.; Agundez, M.; Marcelino, N.; Tercero, B.; Endo, Y.; Fuentetaja, R.; Pardo, J. R.; de Vicente, P.; Cernicharo, J. Journal: ASTRONOMY & ASTROPHYSICS Publication date: 2022/01/07 DOI: 10.1051/0004-6361/202142815 Abstract: We report the detection in TMC-1 of the cation HCCS+ ((X) over tilde (3)Sigma(-)), which is the protonated form of the widespread radical CCS. [...]

Discovery of C5H+ and detection of C3H+ in TMC-1 with the QUIJOTE line surveyx22c6;

2022-06-17T17:15:53+02:00Tags: |

Authors: Cernicharo, J.; Agundez, M.; Cabezas, C.; Fuentetaja, R.; Tercero, B.; Marcelino, N.; Endo, Y.; Pardo, J. R.; de Vicente, P. Journal: ASTRONOMY & ASTROPHYSICS Publication date: 2022/01/24 DOI: 10.1051/0004-6361/202142992 Abstract: We report the discovery of the C5H+ cation toward TMC-1 with the QUIJOTE line survey. Four lines from Jx2004;=7 - 6 up to J10 [...]

Anomalous HCN emission from warm giant molecular clouds

2022-06-17T17:15:53+02:00Tags: |

Authors: Goicoechea, Javier R.; Lique, Francois; Santa-Maria, Miriam G. Journal: ASTRONOMY & ASTROPHYSICS Publication date: 2022/01/27 DOI: 10.1051/0004-6361/202142210 Abstract: Hydrogen cyanide (HCN) is considered a good tracer of the dense molecular gas that serves as fuel for star formation. However, recent large-scale surveys of giant molecular clouds (GMCs) have detected extended HCN rotational line emission [...]

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

2022-06-17T17:15:52+02:00Tags: |

Authors: Pardo, J. R.; Cernicharo, J.; Tercero, B.; Cabezas, C.; Bermudez, C.; Agundez, M.; Gallego, J. D.; Tercero, F.; Gomez-Garrido, M.; de Vicente, P.; Lopez-Perez, J. A. Journal: ASTRONOMY & ASTROPHYSICS Publication date: 2022/01/28 DOI: 10.1051/0004-6361/202142263 Abstract: Context. The carbon-rich envelope of the asymptotic giant branch star CW Leo, IRC+10216, is one of the richest [...]

Detection of the propargyl radical at lambda 3 mm

2022-06-17T17:15:52+02:00Tags: |

Authors: Agundez, M.; Marcelino, N.; Cabezas, C.; Fuentetaja, R.; Tercero, B.; de Vicente, P.; Cernicharo, J. Journal: ASTRONOMY & ASTROPHYSICS Publication date: 2022/01/17 DOI: 10.1051/0004-6361/202142678 Abstract: 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 [...]

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