Related papers: Comparative study of CH+ and SH+ absorption lines …

Detection of CH+, SH+, and their 13C- and 34S- isotopologues toward PKS1830-211

The z=0.89 molecular absorber toward PKS1830-211 provides us with the opportunity to probe the chemical and physical properties of the interstellar medium in the disk of a galaxy at a look-back time of half the present age of the Universe.…

Astrophysics of Galaxies · Physics 2017-10-25 S. Muller , H. S. P. M"uller , J. H. Black , M. G'erin , F. Combes , S. Curran , E. Falgarone , M. Gu'elin , C. Henkel , S. Mart'in , K. M. Menten , E. Roueff , S. Aalto , A. Beelen , T. Wiklind , M. A. Zwaan

Interstellar OH+, H2O+ and H3O+ along the sight-line to G10.6-0.4

We report the detection of absorption lines by the reactive ions OH+, H2O+ and H3O+ along the line of sight to the submillimeter continuum source G10.6$-$0.4 (W31C). We used the Herschel HIFI instrument in dual beam switch mode to observe…

Astrophysics of Galaxies · Physics 2015-05-19 Maryvonne Gerin , M. De Luca , John Black , Eric Herbst , Javier R. Goicoechea , Edith Falgarone , Benjamin Godard , John C. Pearson , Dariucz C. Lis , Thomas G. Phillips , Thomas A. Bell , Paule Sonnentrucker , Francois Boulanger , José Cernicharo , Audrey Coutens , Emmanuel Dartois , Pierre Encrenaz , Thomas Giesen , Paul F. Goldsmith , Harshal Gupta , Cecile Gry , Patrick Hennebelle , Pierre Hily-Blant , Christine Joblin , Maja Kazmierczak , Robert Kolos , Jacek Krelowski , Jesus Martin-Pintado , Raquel Monje , Bhaswati Mookerjea , Michel Pérault , Carina Persson , René Plume , Paul B. Rimmer , Morvan Salez , Mirisloaw Schmidt , David Teyssier , Charlotte Vastel , Shan Shan Yu , Alessandra Contursi , Karl Menten , Thomas Geballe , Stephan Schlemmer , Russ Shipman , Alexander G. G. M. Tielens , Sabine Philipp-May , Alain Cros , Jonas Zmuidzinas , L. A Samoska , K. Klein , D. A. Neufeld , A. Lorenzani , Jürgen Stutzki

Strong CH+ J=1-0 emission and absorption in DR21

We report the first detection of the ground-state rotational transition of the methylidyne cation CH+ towards the massive star-forming region DR21 with the HIFI instrument onboard the Herschel satellite. The line profile exhibits a broad…

Astrophysics of Galaxies · Physics 2015-05-19 E. Falgarone , V. Ossenkopf , M. Gerin , P. Lesaffre , B. Godard , J. Pearson , S. Cabrit , Ch. Joblin , A. O. ~Benz , F. Boulanger , A. Fuente , R. Güsten , A. Harris , T. Klein , C. Kramer , S. Lord , P. Martin , J. Martin-Pintado , D. Neufeld , T. G. ~Phillips , M. Röllig , R. Simon , J. Stutzki , F. van der Tak , D. Teyssier , H. Yorke , N. Erickson , M. Fich , W. Jellema , A. Marston , C. Risacher , M. Salez , F. Schmülling

Herschel-HIFI detections of hydrides towards AFGL 2591 (Envelope emission versus tenuous cloud absorption)

The Heterodyne Instrument for the Far Infrared (HIFI) onboard the Herschel Space Observatory allows the first observations of light diatomic molecules at high spectral resolution and in multiple transitions. Here, we report deep…

Solar and Stellar Astrophysics · Physics 2015-05-19 S. Bruderer , A. O. Benz , E. F. van Dishoeck , M. Melchior , S. D. Doty , F. van der Tak , P. Stäuber , S. F. Wampfler , C. Dedes , U. A. Yıldız , L. Pagani , T. Giannini , Th. de Graauw , N. Whyborn , D. Teyssier , W. Jellema , R. Shipman , R. Schieder , N. Honingh , E. Caux , W. Bächtold , A. Csillaghy , C. Monstein , R. Bachiller , A. Baudry , M. Benedettini , E. Bergin , P. Bjerkeli , G. A. Blake , S. Bontemps , J. Braine , P. Caselli , J. Cernicharo , C. Codella , F. Daniel , A. M. di Giorgio , C. Dominik , P. Encrenaz , M. Fich , A. Fuente , J. R. Goicoechea , F. Helmich , G. J. Herczeg , F. Herpin , M. R. Hogerheijde , T. Jacq , D. Johnstone , J. K. Jørgensen , L. E. Kristensen , B. Larsson , D. Lis , R. Liseau , M. Marseille , C. McCoey , G. Melnick , D. Neufeld , B. Nisini , M. Olberg , B. Parise , J. C. Pearson , R. Plume , C. Risacher , J. Santiago-Garcia , P. Saraceno , R. Shipman , M. Tafalla , T. A. van Kempen , R. Visser , F. Wyrowski

Submillimeter absorption from SH+, a new widespread interstellar radical, 13CH+ and HCl

We have used the Atacama Pathfinder Experiment 12 m telescope (APEX) to carry out an absorption study of submillimeter wavelength rotational ground-state lines of H35Cl, H37Cl, 13CH+, and, for the first time, of the SH+ radical…

Astrophysics of Galaxies · Physics 2015-05-19 K. M. Menten , F. Wyrowski , A. Belloche , R. Guesten , L. Dedes , H. S. P. Mueller

Herschel observations of extra-ordinary sources: Detecting spiral arm clouds by CH absorption lines

We have observed CH absorption lines ($J=3/2, N=1 \leftarrow J=1/2, N=1$) against the continuum source Sgr~B2(M) using the \textit{Herschel}/HIFI instrument. With the high spectral resolution and wide velocity coverage provided by HIFI, 31…

Astrophysics of Galaxies · Physics 2015-05-19 S. -L. Qin , P. Schilke , C. Comito , T. Möller , R. Rolffs , H. S. P. Müller , A. Belloche , K. M. Menten , D. C. Lis , T. G. Phillips , E. A. Bergin , T. A. Bell , N. R. Crockett , G. A. Blake , S. Cabrit , E. Caux , C. Ceccarelli , J. Cernicharo , F. Daniel , M. -L. Dubernet , M. Emprechtinger , P. Encrenaz , E. Falgarone , M. Gerin , T. F. Giesen , J. R. Goicoechea , P. F. Goldsmith , H. Gupta , E. Herbst , C. Joblin , D. Johnstone , W. D. Langer , S. D. Lord , S. Maret , P. G. Martin , G. J. Melnick , P. Morris , J. A. Murphy , D. A. Neufeld , V. Ossenkopf , L. Pagani , J. C. Pearson , M. Pérault , R. Plume , M. Salez , S. Schlemmer , J. Stutzki , N. Trappe , F. F. S. van der Tak , C. Vastel , S. Wang , H. W. Yorke , S. Yu , J. Zmuidzinas , A. Boogert , R. Güsten , P. Hartogh , N. Honingh , A. Karpov , J. Kooi , J. M. Krieg , R. Schieder , M. C. Diez-Gonzalez , R. Bachille , J. Martin-Pintado , W. Baechtold , M. Olberg , L. H. Nordh , J. L. Gill , G. Chattopadhyay

First detection of the Methylidyne cation (CH+) fundamental rotational line with the Herschel/SPIRE FTS

Aims. To follow the species chemistry arising in diverse sources of the Galaxy with Herschel. Methods. SPIRE FTS sparse sampled maps of the Orion bar & compact HII regions G29.96-0.02 and G32.80+0.19 have been analyzed. Results. Beyond the…

Astrophysics of Galaxies · Physics 2015-05-18 D. A. Naylor , E. Dartois , E. Habart , A. Abergel , J. -P. Baluteau , S. C. Jones , E. Polehampton , P. Ade , L. D. Anderson , P. André , H. Arab , J. -P. Bernard , K. Blagrave , F. Boulanger , M. Cohen , M. Compiègne , P. Cox , G. Davis , R. Emery , T. Fulton , C. Gry , M. Huang , C. Joblin , J. M. Kirk , G. Lagache , T. Lim , S. Madden , G. Makiwa , P. Martin , M. -A. Miville-Deschênes , S. Molinari , H. Moseley , F. Motte , K. Okumura , D. Pinheiro-Gocalvez , J. A. Rodón , D. Russeil , P. Saraceno , S. Sidher , L. Spencer , B. Swinyard , D. Ward-Thompson , G. J. White , A. Zavagno

Herschel/HIFI observations of spectrally resolved methylidyne signatures toward the high-mass star-forming core NGC6334I

In contrast to extensively studied dense star-forming cores, little is known about diffuse gas surrounding star-forming regions. We study molecular gas in the high-mass star-forming region NGC6334I, which contains diffuse, quiescent…

Astrophysics of Galaxies · Physics 2010-10-04 M. H. D. van der Wiel , F. F. S. van der Tak , D. C. Lis , T. Bell , E. A. Bergin , C. Comito , M. Emprechtinger , P. Schilke , E. Caux , C. Ceccarelli , A. Baudry , P. F. Goldsmith , E. Herbst , W. Langer , S. Lord , D. Neufeld , J. Pearson , T. Philips , R. Rolffs , H. Yorke , A. Bacmann , M. Benedettini , G. A. Blake , A. Boogert , S. Bottinelli , S. Cabrit , P. Caselli , A. Castets , J. Cernicharo , C. Codella , A. Coutens , N. Crimier , K. Demyk , C. Dominik , P. Encrenaz , E. Falgarone , A. Fuente , M. Gerin , F. Helmich , P. Hennebelle , T. Henning , P. Hily-Blant , T. Jacq , C. Kahane , M. Kama , A. Klotz , B. Lefloch , A. Lorenzani , S. Maret , G. Melnick , B. Nisini , S. Pacheco , L. Pagani , B. Parise , M. Salez , P. Saraceno , K. Schuster , A. G. G. M. Tielens , C. Vastel , S. Viti , V. Wakelam , A. Walters , F. Wyrowski , K. Edwards , J. Zmuidzinas , P. Morris , L. A. Samoska , D. Teyssier

Herschel/HIFI observations of interstellar OH+ and H2O+ towards W49N: a probe of diffuse clouds with a small molecular fraction

We report the detection of absorption by interstellar hydroxyl cations and water cations, along the sight-line to the bright continuum source W49N. We have used Herschel's HIFI instrument, in dual beam switch mode, to observe the 972 GHz N…

Astrophysics of Galaxies · Physics 2016-08-14 D. A. Neufeld , J. R. Goicoechea , P. Sonnentrucker , J. H. Black , J. Pearson , S. Yu , T. G. Phillips , D. C. Lis , M. De Luca , E. Herbst , P. Rimmer , M. Gerin , T. A. Bell , F. Boulanger , J. Cernicharo , A. Coutens , E. Dartois , M. Kazmierczak , P. Encrenaz , E. Falgarone , T. R. Geballe , T. Giesen , B. Godard , P. F. Goldsmith , C. Gry , H. Gupta , P. Hennebelle , P. Hily-Blant , C. Joblin , R. Kołos , J. Krełowski , J. Martın-Pintado , K. M. Menten , R. Monje , B. Mookerjea , M. Perault , C. Persson , R. Plume , M. Salez , S. Schlemmer , M. Schmidt , J. Stutzki , D. Teyssier , C. Vastel , A. Cros , K. Klein , A. Lorenzani , S. Philipp , L. A. Samoska , R. Shipman , A. G. G. M. Tielens , R. Szczerba , J. Zmuidzinas

Herschel/HIFI discovery of interstellar chloronium (H$_2$Cl$^+$)

We report the first detection of chloronium, H$_2$Cl$^+$, in the interstellar medium, using the HIFI instrument aboard the \emph{Herschel} Space Observatory. The $2_{12}-1_{01}$ lines of ortho-H$_2^{35}$Cl$^+$ and ortho-H$_2^{37}$Cl$^+$ are…

Astrophysics of Galaxies · Physics 2016-08-14 D. C. Lis , J. C. Pearson , D. A. Neufeld , P. Schilke , H. S. P. Müller , H. Gupta , T. A. Bell , C. Comito , T. G. Phillips , E. A. Bergin , C. Ceccarelli , P. F. Goldsmith , G. A. Blake , A. Bacmann , A. Baudry , M. Benedettini , A. Benz , J. Black , A. Boogert , S. Bottinelli , S. Cabrit , P. Caselli , A. Castets , E. Caux , J. Cernicharo , C. Codella , A. Coutens , N. Crimier , N. R. Crockett , F. Daniel , K. Demyk , C. Dominic , M. -L. Dubernet , M. Emprechtinger , P. Encrenaz , E. Falgarone , A. Fuente , M. Gerin , T. F. Giesen , J. R. Goicoechea , F. Helmich , P. Hennebelle , Th. Henning , E. Herbst , P. Hily-Blant , Å. Hjalmarson , D. Hollenbach , T. Jack , C. Joblin , D. Johnstone , C. Kahane , M. Kama , M. Kaufman , A. Klotz , W. D. Langer , B. Larsson , J. Le Bourlot , B. Lefloch , F. Le Petit , D. Li , R. Liseau , S. D. Lord , A. Lorenzani , S. Maret , P. G. Martin , G. J. Melnick , K. M. Menten , P. Morris , J. A. Murphy , Z. Nagy , B. Nisini , V. Ossenkopf , S. Pacheco , L. Pagani , B. Parise , M. Pérault , R. Plume , S. -L. Qin , E. Roueff , M. Salez , A. Sandqvist , P. Saraceno , S. Schlemmer , K. Schuster , R. Snell , J. Stutzki , A. Tielens , N. Trappe , F. F. S. van der Tak , M. H. D. van der Wiel , E. van Dishoeck , C. Vastel , S. Viti , V. Wakelam , A. Walters , S. Wang , F. Wyrowski , H. W. Yorke , S. Yu , J. Zmuidzinas , Y. Delorme , J. -P. Desbat , R. Güsten , J. -M. Krieg , B. Delforge

First detection of 13CH in the interstellar medium

In recent years, a plethora of high spectral resolution observations of sub-mm and FIR transitions of methylidene (CH), have demonstrated this radical to be a valuable proxy for H2, that can be used for characterising molecular gas within…

Astrophysics of Galaxies · Physics 2020-08-26 Arshia M. Jacob , Karl M. Menten , Helmut Wiesemeyer , Rolf Guesten , Friedrich Wyrowski , Bernd Klein

The chemistry of ions in the Orion Bar I. - CH+, SH+, and CF+: The effect of high electron density and vibrationally excited H2 in a warm PDR surface

The abundances of interstellar CH+ and SH+ are not well understood as their most likely formation channels are highly endothermic. Using data from Herschel, we study the formation of CH+ and SH+ in a typical high UV-illumination…

Astrophysics of Galaxies · Physics 2013-02-05 Z. Nagy , F. F. S. Van der Tak , V. Ossenkopf , M. Gerin , F. Le Petit , J. Le Bourlot , J. H. Black , J. R. Goicoechea , C. Joblin , M. Roellig , E. A. Bergin

Neutral and Ionized Hydrides in Star-forming Regions -- Observations with Herschel/HIFI

The cosmic abundance of hydrides depends critically on high-energy UV, X-ray, and particle irradiation. Here we study hydrides in star-forming regions where irradiation by the young stellar object can be substantial, and density and…

Solar and Stellar Astrophysics · Physics 2015-06-17 Arnold O. Benz , Simon Bruderer , Ewine F. van Dishoeck , Pascal Staeuber , Susanne F. Wampfler

Detection of hydrogen fluoride absorption in diffuse molecular clouds with Herschel/HIFI: a ubiquitous tracer of molecular gas

We discuss the detection of absorption by interstellar hydrogen fluoride (HF) along the sight line to the submillimeter continuum sources W49N and W51. We have used Herschel's HIFI instrument in dual beam switch mode to observe the…

Astrophysics of Galaxies · Physics 2016-08-14 P. Sonnentrucker , D. A. Neufeld , T. G. Phillips , M. Gerin , D. C. Lis , M. De Luca , J. R. Goicoechea , J. H. Black , T. A. Bell , F. Boulanger , J. Cernicharo , A. Coutens , E. Dartois , M. Kazmierczak , P. Encrenaz , E. Falgarone , T. R. Geballe , T. Giesen , B. Godard , P. F. Goldsmith , C. Gry , H. Gupta , P. Hennebelle , E. Herbst , P. Hily-Blant , C. Joblin , R. Kolos , J. Krelowski , J. Martın-Pintado , K. M. Menten , R. Monje , B. Mookerjea , J. Pearson , M. Perault , C. M. Persson , R. Plume , M. Salez , S. Schlemmer , M. Schmidt , J. Stutzki , D. Teyssier , C. Vastel , S. Yu , E. Caux , R. Gusten , W. A. Hatch , T. Klein , I. Mehdi , P. Morris , J. S. Ward

The chemistry of chlorine-bearing species in the diffuse interstellar medium, and new SOFIA/GREAT observations of HCl$^+$

We have revisited the chemistry of chlorine-bearing species in the diffuse interstellar medium with new observations of the HCl$^+$ molecular ion and new astrochemical models. Using the GREAT instrument on board SOFIA, we observed the…

Astrophysics of Galaxies · Physics 2021-09-08 David A. Neufeld , Helmut Wiesemeyer , Mark J. Wolfire , Arshia Jacob , Christof Buchbender , Maryvonne Gerin , Harshal Gupta , Rolf Güsten , Peter Schilke

Herschel/HIFI Spectral Mapping of C$^+$, CH$^+$, and CH in Orion BN/KL: The Prevailing Role of Ultraviolet Irradiation in CH$^+$ Formation

The CH$^+$ ion is a key species in the initial steps of interstellar carbon chemistry. Its formation in diverse environments where it is observed is not well understood, however, because the main production pathway is so endothermic (4280…

Astrophysics of Galaxies · Physics 2016-09-21 Patrick W. Morris , Harshal Gupta , Zsofia Nagy , John C. Pearson , Volker Ossenkopf-Okada , Edith Falgarone , Dariusz C. Lis , Maryvonne Gerin , Gary Melnick , David A. Neufeld , Edwin A. Bergin

Revised spectroscopic parameters of SH$^+$ from ALMA and IRAM 30 m observations

Hydrides represent the first steps of interstellar chemistry. Sulfanylium (SH$^+$), in particular, is a key tracer of energetic processes. We used ALMA and the IRAM 30 m telescope to search for the lowest frequency rotational lines of…

Astrophysics of Galaxies · Physics 2014-09-24 Holger S. P. Müller , Javier R. Goicoechea , José Cernicharo , Marcelino Agúndez , Jérôme Pety , Sara Cuadrado , Maryvonne Gerin , Gaelle Dumas , Edwige Chapillon

HyGAL: Characterizing the Galactic ISM with observations of hydrides and other small molecules. III. The absorption lines of [O I], CH, and OH

The HyGAL Stratospheric Observatory for Infrared Astronomy (SOFIA) legacy program aims at characterizing the interstellar medium in the Milky Way using hydrides, [C II], and [O I] absorption lines with the 2.7 m SOFIA telescope toward…

Astrophysics of Galaxies · Physics 2026-04-29 W. -J. Kim , A. M. Jacob , D. A. Neufeld , P. Schilke , H. Wiesemeyer , M. Gerin , M. G. Wolfire , V. Ossenkopf-Okada , V. Valdivia , E. Falgarone , D. C. Lis , S. Bialy , M. R. Rugel , Á. Sánchez-Monge , M. Busch , T. Möller , F. Wyrowski , D. Seifried , K. M. Menten , A. Saintonge

Unveiling the chemistry of interstellar CH: Spectroscopy of the 2 THz $N=2\leftarrow 1$ ground state line

The methylidyne radical CH is commonly used as a proxy for H$_2$ in the cold, neutral phase of the interstellar medium. The optical spectroscopy of CH is limited by interstellar extinction, whereas far-infrared observations provide an…

Astrophysics of Galaxies · Physics 2018-04-16 Helmut Wiesemeyer , Rolf Güsten , Karl M. Menten , Carlos A. Durán , Timea Csengeri , Arshia M. Jacob , Robert Simon , Jürgen Stutzki , Friedrich Wyrowski

The ionization rates of galactic nuclei and disks from Herschel/HIFI observations of water and its associated ions

(Abridged) We present Herschel/HIFI spectra of the H2O 1113 GHz and H2O+ 1115 GHz lines toward five nearby prototypical starburst/AGN systems, and OH+ 971 GHz spectra toward three of these. The beam size of 20" corresponds to resolutions…

Astrophysics of Galaxies · Physics 2016-09-14 Floris van der Tak , Axel Weiss , Lijie Liu , Rolf Guesten