J/ApJ/902/L1ivo://CDS.VizieR/J/ApJ/902/L1doi:10.26093/cds/vizier.19029001CDSHartigan P.Downes T.Isella A.2022-06-13T11:41:58Z2022-05-13T08:14:25ZCDS support team

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

cds-question@unistra.frstar-forming-regionsinfrared-sourcesWe present the first wide-field near-infrared adaptive-optics images of Carina's Western Wall (G287.38-0.62), one of the brightest and most well-defined irradiated interfaces known in a region of massive star formation. The new narrowband H_2_ 2.12{mu}m, Br-{gamma} and K-continuum images from Gemini South trace the photoevaporative flow from the cloud and identify locations where UV radiation from the surrounding massive stars excites molecular hydrogen to fluoresce. With a field of view of ~1.5'x2.9' and spatial resolution between 60 and 110mas, the new images show a spectacular level of detail over a large area, and presage what the James Webb Space Telescope (JWST) should achieve. The Wall is convex in shape, with a large triangular-shaped extension near its apex. The interface near the apex consists of 3-4 regularly spaced ridges with projected spacings of ~2000au, suggestive of a large-scale dynamically important magnetic field. The northern edge of the Wall breaks into several swept-back fragments of width ~1800au that resemble Kelvin-Helmholtz instabilities, and the southern part of the Wall also shows complex morphologies including a sinusoidal-like variation with a half-wavelength of 2500au. Though the dissociation front must increase the density along the surface of the Wall, it does not resolve into pillars that point back to the ionization sources, as could occur if the front triggered new stars to form. We discovered that MHO 1630, an H_2_ outflow with no clear driving source in the northern portion of the Wall, consists of a series of bow shocks arrayed in a line.2020ApJ...902L...1Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/902/L1CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/367/513 : JHKs[3.5][4.5] photometry of NGC 3372 (Tapia+, 2006)J/ApJS/194/5 : Carina OB stars in the CCCP catalog (Gagne+, 2011)J/A+A/579/A130 : Near-IR BN/KL outflow images (Bally+, 2015)J/A+A/609/A10 : NGC2264 structure and star formation history (Venuti+, 2018)J/A+A/622/A91 : Herschel/HIFI and IRAM 30m images of OMC1 (Goicoechea+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/902/L1https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/902/L1http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/902/L1https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/902/L1https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/902/L1http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/902/L1GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/902/L1/fits (Summary of the individual FITS files used to produce the AO image in Figure 2b)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/902/L1/fits?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/902/L1/fits?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/902/L1/fits?GETtext/xml+votable180.050000true160.88317-59.588870.005555555555555556Associated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/ApJ/902/L16/38016https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/902/L1?format=asciiInfrareddefaultJ/ApJ/902/L1/fitsSummary of the individual FITS files used to produce the AO image in Figure 2brecnoRecord 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.mainNx[1621] Number of pixels along X-axismeta.numberintNy[2957] Number of pixels along Y-axismeta.numberintDateUT date of observation (2019-01-15)time.epoch;obsnullableSize[18748] Size of FITS filekibytephys.size;meta.fitsintFileNameName of the FITS file in subdirectory fitsmeta.id;meta.fitscharFiltBand filter (see the Description section)instr.bandpass;instr.filterfitsDownload the FITS filemeta.ref.urlcharADatDisplay the VizieR/Saada associated webpagemeta.ref.urlchar