J/ApJ/725/2232ivo://CDS.VizieR/J/ApJ/725/2232doi:10.26093/cds/vizier.17252232CDSRoman-Zuniga C.G.Alves J.F.Lada C.J.Lombardi M.2017-10-16T14:58:06Z2012-08-29T11:10:30ZCDS support team

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

cds-question@unistra.frextinctioninterstellar-mediummolecular-cloudssurveysapparent-magnitudeinfrared-sourcesWe present a new set of high-resolution dust extinction maps of the nearby and essentially starless Pipe Nebula molecular cloud. The maps were constructed from a concerted deep near-infrared imaging survey with the ESO-VLT, ESO-NTT, CAHA 3.5m telescopes, and 2MASS data. The new maps have a resolution three times higher than the previous extinction map of this cloud by Lombardi et al. (2006A&A...454..781L) and are able to resolve structures down to 2600AU. We detect 244 significant extinction peaks across the cloud. These peaks have masses between 0.1 and 18.4M_{sun}_, diameters between 1.2 and 5.7x10^4^AU (0.06 and 0.28pc), and mean densities of about 10^4^cm^-3^, all in good agreement with previous results. From the analysis of the mean surface density of companions we find a well-defined scale near 1.4x10^4^AU below which we detect a significant decrease in structure of the cloud. This scale is smaller than the Jeans length calculated from the mean density of the peaks. The surface density of peaks is not uniform but instead it displays clustering. Extinction peaks in the Pipe Nebula appear to have a spatial distribution similar to the stars in Taurus, suggesting that the spatial distribution of stars evolves directly from the primordial spatial distribution of high-density material.2010ApJ...725.2232Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/725/2232CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/eso : ESO Science Archive Catalog (ESO, 2012)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/ApJ/699/742 : Properties of cores in the Pipe Nebula (Rathborne+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/725/2232https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/725/2232http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/725/2232https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/725/2232https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/725/2232http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/725/2232GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/725/2232/table2 (CLUMPFIND-2D identifications in high-resolution extinction maps of the Pipe Nebula)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/725/2232/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/725/2232/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/725/2232/table2?GETtext/xml+votable180.050000true258.625-27.48330.005555555555555556Cone search capability for table J/ApJ/725/2232/tablea1 (Near-infrared observations of Pipe Nebula fields)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/725/2232/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/725/2232/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/725/2232/tablea1?GETtext/xml+votable180.050000true257.63157306-27.426578060.0055555555555555566/28859 28862 28863 29187 29189 29190 29191 29192 29193 29200 29201 29204 29205 29206 29209 29211 29212 29214 29215 29248https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/725/2232?format=asciiInfrareddefaultJ/ApJ/725/2232/table2CLUMPFIND-2D identifications in high-resolution extinction maps of the Pipe NebularecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRegRegion name (Stem, Shank, Bowl or Smoke maps, see figure 2)obs.fieldcharPIDPeak identification from RLA09 ([R/N]NNN) (1)meta.id;stat.maxcharm_PID[a-h] close peaks (2)meta.code.multipcharn_PID[*] Note on PID (3)meta.notecharAvMaximum extinction (4)magphys.absorption;stat.maxfloatReq[0.022/0.146] Equivalent radius of the peakpcphys.size.radius;stat.maxfloatMass[0.054/4.812] Mass of the extinction peak regionsolMassphys.massfloatn[0.41/4.687] Average density of the peak10000cm**-3phys.densityfloat_RASimbad column added by the CDSdegpos.eq.ra;meta.mainnullable_DESimbad column added by the CDSdegpos.eq.dec;meta.mainnullableJ/ApJ/725/2232/tablea1Near-infrared observations of Pipe Nebula fieldsFieldField identificationmeta.id;obs.fieldcharDateDate of observationtime.epochnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintInstInstrument used for observations (SOFI-NTT, ISAAC-VLT, or OMEGA 2000-CAHA 3.5m)instr.setupcharRAJ2000Center right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Center declination (J2000)degpos.eq.dec;meta.mainFFilter (J, H, or Ks)meta.code;instr.filtercharSeeEstimated seeing based on the average FWHM of the stars detected in each fieldarcsecinstr.obsty.seeingfloatPmag[16.75/24.5] Peak of the observed magnitude distributionmagphys.luminosity.funfloatMapCorresponding figure number in large-scale maps (figures 3-7) and atlasmeta.bib.figchar