J/A+A/682/A2ivo://CDS.VizieR/J/A+A/682/A2doi:10.26093/cds/vizier.36820002CDSCrowe S.Fedriani R.Tan J.C.Whittle M.Zhang Y.Caratti o Garatti A.,Farias J.P.Gautam A.Telkamp Z.Rothberg B.Grudic M.Andersen M.,Cosentino G.Garcia-Lopez R.Rosero V.Tanaka K.Pinna E.Rossi F.,Miller D.Agapito G.Plantet C.Ghose E.Christou J.Power J.,Puglisi A.Briguglio R.Brusa G.Taylor G.Zhang X.Mazzoni T.,Bonaglia M.Esposito S.Veillet C.2024-11-07T20:01:06Z2024-01-26T10:39:26ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frstar-forming-regionsinfrared-astronomymillimeter-astronomysubmillimeter-astronomyMassive 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. 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 massives tar formation models. 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. 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 ~11M_{sun}_, 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" (0.15pc in projection) to the south, AFGL 5180 S. From our NIR continuum images we identify YSO candidates down to masses of ~0.1M_{sun}_. Combined with the sub-mm sources, this yields a surface number density of such YSOs of N*~10^3pc^-2^ within a projected radius of about 0.1pc. 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 0.2pc, with only modest enhancement around the massive protostar inside 0.05pc, which provides additional constraints on these massive star formation models. 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.2024A&A...682A...2Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/682/A2CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/682/A2https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/682/A2http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/682/A2https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/682/A2https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/682/A2http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/682/A2GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/682/A2/list (List of fits images)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/682/A2/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/682/A2/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/682/A2/list?GETtext/xml+votable180.050000true92.2220821.641660.005555555555555556Associated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/A+A/682/A26/24325https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/682/A2?format=asciiInfraredMillimeterdefaultJ/A+A/682/A2/listList of fits imagesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension of center (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of center (J2000)degpos.eq.dec;meta.mainscale? Scale of the imagearcsec/pixinstr.scalefloatnullableNxNumber of pixels along X-axismeta.numberintNyNumber of pixels along Y-axismeta.numberintObs.dateObservation datestime.epoch;obsnullableFreq? Observed frequencyGHzem.freqfloatnullablesizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitscharAssocDataAssociated Data web pagemeta.ref.urlchar