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Sökning: onr:"swepub:oai:research.chalmers.se:63f3ed08-2fa1-44c1-af4f-23473fbd1d72" > Seeds of Life in Sp...

  • Taquet, VIstituto nazionale di astrofisica (INAF), Italy (författare)

Seeds of Life in Space (SOLIS) VI. Chemical evolution of sulfuretted species along the outflows driven by the low-mass protostellar binary NGC1333-IRAS4A

  • Artikel/kapitelEngelska2020

Förlag, utgivningsår, omfång ...

  • 2020

Nummerbeteckningar

  • LIBRIS-ID:oai:research.chalmers.se:63f3ed08-2fa1-44c1-af4f-23473fbd1d72
  • https://research.chalmers.se/publication/517526URI
  • https://doi.org/10.1051/0004-6361/201937072DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • Context. Low-mass protostars drive powerful molecular outflows that can be observed with millimetre and submillimetre telescopes. Various sulfuretted species are known to be bright in shocks and could be used to infer the physical and chemical conditions throughout the observed outflows. Aims. The evolution of sulfur chemistry is studied along the outflows driven by the NGC1333-IRAS4A protobinary system located in the Perseus cloud to constrain the physical and chemical processes at work in shocks. Methods. We observed various transitions from OCS, CS, SO, and SO2 towards NGC1333-IRAS4A in the 1.3, 2, and 3mm bands using the IRAM NOrthern Extended Millimeter Array and we interpreted the observations through the use of the Paris-Durham shock model. Results. The targeted species clearly show different spatial emission along the two outflows driven by IRAS4A. OCS is brighter on small and large scales along the south outflow driven by IRAS4A1, whereas SO2 is detected rather along the outflow driven by IRAS4A2 that is extended along the north east-south west direction. SO is detected at extremely high radial velocity up to +25 km s 1 relative to the source velocity, clearly allowing us to distinguish the two outflows on small scales. Column density ratio maps estimated from a rotational diagram analysis allowed us to confirm a clear gradient of the OCS/SO2 column density ratio between the IRAS4A1 and IRAS4A2 outflows. Analysis assuming non Local Thermodynamic Equilibrium of four SO2 transitions towards several SiO emission peaks suggests that the observed gas should be associated with densities higher than 105 cm 3 and relatively warm (T > 100 K) temperatures in most cases. Conclusions. The observed chemical differentiation between the two outflows of the IRAS4A system could be explained by a different chemical history. The outflow driven by IRAS4A1 is likely younger and more enriched in species initially formed in interstellar ices, such as OCS, and recently sputtered into the shock gas. In contrast, the longer and likely older outflow triggered by IRAS4A2 is more enriched in species that have a gas phase origin, such as SO2.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Codella, C.Université Grenoble Alpes, France,Istituto nazionale di astrofisica (INAF), Italy (författare)
  • De Simone, M.Université Grenoble Alpes, France (författare)
  • Lopez-Sepulcre, A.Université Grenoble Alpes, France,Institut de Radioastronomie Millimétrique (IRAM), France (författare)
  • Pineda, J. E.Max Planck Society for the Advancement of Science (MPG), Germany (författare)
  • Segura-Cox, D.Max Planck Society for the Advancement of Science (MPG), Germany (författare)
  • Ceccarelli, C.Istituto nazionale di astrofisica (INAF), Italy,Université Grenoble Alpes, France (författare)
  • Caselli, P.Max Planck Society for the Advancement of Science (MPG), Germany (författare)
  • Gusdorf, A.Sorbonne University, France (författare)
  • Persson, Magnus V.,1983Chalmers University of Technology,Chalmers tekniska högskola(Swepub:cth)magnpe (författare)
  • Alves, F.Max Planck Society for the Advancement of Science (MPG), Germany (författare)
  • Caux, E.University of Toulouse, France (författare)
  • Favre, C.Université Grenoble Alpes, France (författare)
  • Fontani, F.Istituto nazionale di astrofisica (INAF), Italy (författare)
  • Neri, R.Institut de Radioastronomie Millimétrique (IRAM), France (författare)
  • Oya, Y.University of Tokyo, Japan (författare)
  • Sakai, N.RIKEN, Japan (författare)
  • Vastel, C.University of Toulouse, France (författare)
  • Yamamoto, S.University of Tokyo, Japan (författare)
  • Bachiller, R. (författare)
  • Balucani, N.Istituto nazionale di astrofisica (INAF), Italy,Université Grenoble Alpes, France (författare)
  • Bianchi, E.Université Grenoble Alpes, France (författare)
  • Bizzocchi, L.Max Planck Society for the Advancement of Science (MPG), Germany (författare)
  • Chacon-Tanarro, A. (författare)
  • Dulieu, F. (författare)
  • Enrique-Romero, J.Université Grenoble Alpes, France (författare)
  • Feng, S.Chinese Academy of Sciences, China (författare)
  • Holdship, J.University College London (UCL), United Kingdom (författare)
  • Lefloch, B.Université Grenoble Alpes, France (författare)
  • Al-Edhari, A. JaberUniversité Grenoble Alpes, France (författare)
  • Jimenez-Serra, ISpanish National Research Council, Spain (författare)
  • Kahane, C.Université Grenoble Alpes, France (författare)
  • Lattanzi, VMax Planck Society for the Advancement of Science (MPG), Germany (författare)
  • Ospina-Zamudio, J.Université Grenoble Alpes, France (författare)
  • Podio, L.Istituto nazionale di astrofisica (INAF), Italy (författare)
  • Punanova, A. (författare)
  • Rimola, A.Universitat Autonoma de Barcelona (UAB), Spain (författare)
  • Sims, I. R. (författare)
  • Spezzano, S.Max Planck Society for the Advancement of Science (MPG), Germany (författare)
  • Testi, L.Istituto nazionale di astrofisica (INAF), Italy (författare)
  • Theule, P. (författare)
  • Ugliengo, P.University of Turin, Italy (författare)
  • Vasyunin, (författare)
  • Vazart, F.Université Grenoble Alpes, France (författare)
  • Viti, S.University College London (UCL), United Kingdom (författare)
  • Witzel, A.Université Grenoble Alpes, France (författare)
  • Université Grenoble Alpes, FranceIstituto nazionale di astrofisica (INAF), Italy (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Astronomy and Astrophysics6370004-63611432-0746

Internetlänk

  • https://research.chalmers.se/publication/517526
  • https://doi.org/10.1051/0004-6361/201937072

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