Chlorine-bearing molecules in molecular absorbers at intermediate redshifts
| العنوان: | Chlorine-bearing molecules in molecular absorbers at intermediate redshifts |
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| المؤلفون: | Maryvonne Gerin, R. Le Gal, John H. Black, Evelyne Roueff, Sebastien Muller, Sofia Wallström |
| المساهمون: | Institute of Astronomy [Leuven], Catholic University of Leuven - Katholieke Universiteit Leuven (KU Leuven), Onsala Space Observatory (OSO), Chalmers University of Technology [Göteborg], Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA (UMR_8112)), Sorbonne Université (SU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Harvard-Smithsonian Center for Astrophysics (CfA), Harvard University [Cambridge]-Smithsonian Institution |
| المصدر: | Astronomy and Astrophysics-A&A Astronomy and Astrophysics-A&A, EDP Sciences, 2019, 629, pp.A128. ⟨10.1051/0004-6361/201935860⟩ |
| بيانات النشر: | HAL CCSD, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | GRAVITATIONAL LENS, individual: B 0218+357 [quasars], absorption lines [quasars], quasars, Analytical chemistry, FOS: Physical sciences, Astrophysics, Astronomy & Astrophysics, 01 natural sciences, chemistry.chemical_compound, Stellar nucleosynthesis, PKS 1830−211 -quasars, 0103 physical sciences, abundances [galaxies], ISM -galaxies, galaxies, ABSORPTION, Molecule, abundances -radio lines, individual, 010306 general physics, Hydrogen chloride, 010303 astronomy & astrophysics, Physics, Line-of-sight, Science & Technology, ISM [galaxies], individual: PKS 1830-211 [quasars], Astronomy and Astrophysics, Quasar, B 0218+357 -galaxies, Astrophysics - Astrophysics of Galaxies, Redshift, galaxies [radio lines], EVOLUTION, 3. Good health, Trace gas, chemistry, Space and Planetary Science, [SDU]Sciences of the Universe [physics], Astrophysics of Galaxies (astro-ph.GA), Physical Sciences, Absorption (chemistry), absorption lines -quasars |
| الوصف: | We use observations of chlorine-bearing species in molecular absorbers at intermediate redshifts to investigate chemical properties and $^{35}$Cl/$^{37}$Cl isotopic ratios in the absorbing sightlines. Chloronium (H$_2$Cl$^+$) is detected along three independent lines of sight in the z=0.89 and z=0.68 molecular absorbers located in front of the lensed quasars PKS 1830-211 and B 0218+357, respectively. Hydrogen chloride (HCl) was observed only toward PKS 1830-211, and is found to behave differently from H$_2$Cl$^+$. It is detected in one line of sight with an abundance ratio [H$_2$Cl$^+$]/[HCl] $\sim 1$, but remains undetected in the other, more diffuse, line of sight, with a ratio [H$_2$Cl$^+$]/[HCl]~$>17$. The absorption profiles of these two chlorine-bearing species are compared to other species and discussed in terms of the physical properties of the absorbing gas. Our findings are consistent with the picture emerging from chemical models where different species trace gas with different molecular hydrogen fraction. The $^{35}$Cl/$^{37}$Cl isotopic ratios are measured in the different lines of sight and are discussed in terms of stellar nucleosynthesis. Accepted for publication in Astronomy & Astrophysics 10 pages, 2 figures |
| اللغة: | English |
| تدمد: | 0004-6361 |
| DOI: | 10.1051/0004-6361/201935860⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abe4de0c282fdfb7e9b6f0ce199fb726 https://hal.archives-ouvertes.fr/hal-03017346 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....abe4de0c282fdfb7e9b6f0ce199fb726 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00046361 |
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| DOI: | 10.1051/0004-6361/201935860⟩ |