Discovery of interstellar NC4NH+: Dicyanopolyynes are indeed abundant in space

2023-03-30T23:12:32+02:00Tags: |

Authors: Agundez, M.; Cabezas, C.; Marcelino, N.; Fuentetaja, R.; Tercero, B.; de Vicente, P.; Cernicharo, J. Journal: ASTRONOMY & ASTROPHYSICS Publication date: 2023/01/01 DOI: 10.1051/0004-6361/202245492 Abstract: The previous detection of two species related to the nonpolar molecule cyanogen (NCCN), its protonated form (NCCNH+) and one metastable isomer (CNCN), in cold dense clouds supported the hypothesis [...]

History of two mass loss processes in VYCMa Fast outflows carving older ejecta

2023-03-30T23:12:31+02:00Tags: |

Authors: Quintana-Lacaci, G.; Velilla-Prieto, L.; Agundez, M.; Fonfria, J. P.; Cernicharo, J.; Decin, L.; Castro-Carrizo, A. Journal: ASTRONOMY & ASTROPHYSICS Publication date: 2023/01/05 DOI: 10.1051/0004-6361/202244396 Abstract: Context. Red supergiant stars (RSGs, M-init=10-40 M-circle dot) are known to eject large amounts of material, as much as half of their initial mass during this evolutionary phase. However, [...]

The Binary and the Disk: The Beauty is Found within NGC3132 with JWST

2023-03-30T23:12:30+02:00Tags: |

Authors: Sahai, Raghvendra; Bujarrabal, Valentin; Quintana-Lacaci, Guillermo; Reindl, Nicole; Van de Steene, Griet; Contreras, Carmen Sanchez; Ressler, Michael E. Journal: ASTROPHYSICAL JOURNAL Publication date: 2023/02/01 DOI: 10.3847/1538-4357/aca7ba Abstract: The planetary nebula (PN) NGC 3132 is a striking example of the dramatic but poorly understood mass-loss phenomena that (1-8) M (circle dot) stars undergo during their [...]

Gas kinematics around filamentary structures in the Orion B cloud

2023-03-30T23:12:26+02:00Tags: |

Authors: Gaudel, Mathilde; Orkisz, Jan H.; Gerin, Maryvonne; Pety, Jerome; Roueff, Antoine; Marchal, Antoine; Levrier, Francois; Miville-Deschenes, Marc-Antoine; Goicoechea, Javier R.; Roueff, Evelyne; Le Petit, Franck; Magalhaes, Victor de Souza; Palud, Pierre; Santa-Maria, Miriam G.; Vono, Maxime; Bardeau, Sebastien; Bron, Emeric; Chainais, Pierre; Chanussot, Jocelyn; Gratier, Pierre; Guzman, Viviana; Hughes, Annie; Kainulainen, Jouni; Languignon, David; [...]

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

2023-02-21T13:37:30+01:00Tags: |

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. [...]

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

2023-02-21T13:37:29+01:00Tags: |

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 = [...]

Detection of the propargyl radical at lambda 3 mm

2023-02-21T13:37:28+01:00Tags: |

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 [...]

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

2023-02-21T13:37:21+01:00Tags: |

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

2023-02-21T13:37:19+01:00Tags: |

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

2023-02-21T13:37:18+01:00Tags: |

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 [...]

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