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  • Crowe, S.University of Virginia,Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA) (författare)

Near-infrared observations of outflows and young stellar objects in the massive star-forming region AFGL 5180

  • Artikel/kapitelEngelska2024

Förlag, utgivningsår, omfång ...

  • 2024
  • electronicrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:research.chalmers.se:1e097a6c-6070-408a-b01d-5af5219d9031
  • https://doi.org/10.1051/0004-6361/202348094DOI
  • https://research.chalmers.se/publication/539873URI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

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

Anmärkningar

  • Context. Massive stars play important roles throughout the universe; however, their formation remains poorly understood. Observations of jets and outflows in high-mass star-forming regions, as well as surveys of young stellar object (YSO) content, can help test theoretical models of massive star formation. Aims. We aim at characterizing the massive star-forming region AFGL 5180 in the near-infrared (NIR), identifying outflows and relating these to sub-mm/mm sources, as well as surveying the overall YSO surface number density to compare to massive star formation models. Methods. Broad- and narrow-band imaging of AFGL 5180 was made in the NIR with the Large Binocular Telescope, in both seeing-limited (~0.5′) and high angular resolution (~0.09′) Adaptive Optics (AO) modes, as well as with the Hubble Space Telescope. Archival continuum data from the Atacama Millimeter/Submillimeter Array (ALMA) was also utilized. Results. At least 40 jet knots were identified via NIR emission from H2 and [FeII] tracing shocked gas. Bright jet knots outflowing from the central most massive protostar, S4 (estimated mass ~11 M⊙, via SED fitting), are detected towards the east of the source and are resolved in fine detail with the AO imaging. Additional knots are distributed throughout the field, likely indicating the presence of multiple driving sources. Sub-millimeter sources detected by ALMA are shown to be grouped in two main complexes, AFGL 5180 M and a small cluster ~15′ (0.15 pc in projection) to the south, AFGL 5180 S. From our NIR continuum images we identify YSO candidates down to masses of ~0.1 M⊙. Combined with the sub-mm sources, this yields a surface number density of such YSOs of N* ~ 103pc-2 within a projected radius of about 0.1 pc. Such a value is similar to those predicted by models of both core accretion from a turbulent clump environment and competitive accretion. The radial profile of N* is relatively flat on scales out to 0.2 pc, with only modest enhancement around the massive protostar inside 0.05 pc, which provides additional constraints on these massive star formation models. Conclusions. This study demonstrates the utility of high-resolution NIR imaging, in particular with AO, for detecting outflow activity and YSOs in distant regions. The presented images reveal the complex morphology of outflow-shocked gas within the large-scale bipolar flow of a massive protostar, as well as clear evidence for several other outflow driving sources in the region. Finally, this work presents a novel approach to compare the observed YSO surface number density from our study against different models of massive star formation.

Ämnesord och genrebeteckningar

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

  • Fedriani, R.Instituto de Astrofisica de Andalucía (IAA),Institute of Astrophysics of Andalusia (IAA) (författare)
  • Tan, Jonathan,1973Chalmers tekniska högskola,Chalmers University of Technology,University of Virginia(Swepub:cth)tanj (författare)
  • Whittle, M.University of Virginia (författare)
  • Zhang, Y.Shanghai Jiao Tong University (författare)
  • Garatti, A. Caratti o.Osservatorio Astronomico di Capodimonte (författare)
  • Farias, J. P.The University of Texas at Austin, USA (författare)
  • Gautam, A.University of Virginia (författare)
  • Telkamp, Z.University of Virginia (författare)
  • Rothberg, B.George Mason University (författare)
  • Grudić, M.Carnegie Observatories (författare)
  • Andersen, Morten (författare)
  • Cosentino, Giuliana,1990Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)giuliana (författare)
  • Garcia-Lopez, R.University College Dublin, National University Of Ireland (författare)
  • Rosero, VivianaNational Radio Astronomy Observatory Socorro (författare)
  • Tanaka, Kei E.I.Tokyo Institute of Technology (författare)
  • Pinna, E.Osservatorio Astrofisico di Arcetri,Arcetri Astrophysical Observatory (författare)
  • Rossi, F.Osservatorio Astrofisico di Arcetri,Arcetri Astrophysical Observatory (författare)
  • Miller, D. (författare)
  • Agapito, G.Osservatorio Astrofisico di Arcetri,Arcetri Astrophysical Observatory (författare)
  • Plantet, C.Osservatorio Astrofisico di Arcetri,Arcetri Astrophysical Observatory (författare)
  • Ghose, E.Osservatorio Astrofisico di Arcetri,Arcetri Astrophysical Observatory (författare)
  • Christou, J. (författare)
  • Power, J. (författare)
  • Puglisi, A.Osservatorio Astrofisico di Arcetri,Arcetri Astrophysical Observatory (författare)
  • Briguglio, R.Osservatorio Astrofisico di Arcetri,Arcetri Astrophysical Observatory (författare)
  • Brusa, G. (författare)
  • Taylor, G. (författare)
  • Zhang, X. (författare)
  • Mazzoni, T.Osservatorio Astrofisico di Arcetri,Arcetri Astrophysical Observatory (författare)
  • Bonaglia, M.Osservatorio Astrofisico di Arcetri,Arcetri Astrophysical Observatory (författare)
  • Esposito, S.Osservatorio Astrofisico di Arcetri,Arcetri Astrophysical Observatory (författare)
  • Veillet, C. (författare)
  • University of VirginiaInstituto de Astrofisica de Andalucía (IAA) (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Astronomy and Astrophysics6820004-63611432-0746

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