J/A+A/682/A180ivo://CDS.VizieR/J/A+A/682/A180doi:10.26093/cds/vizier.36820180CDSDiaz-Marquez E.Grau R.Busquet G.Girart J.M.Sanchez-Monge A.,Palau A.Povich M.S.Anez-Lopez N.Liu H.B.Zhang Q.Estalella R.2024-11-28T20:06:28Z2024-02-26T12:49:58ZCDS support team

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

cds-question@unistra.frmolecular-cloudsinfrared-sourcesradio-sourcesThe IRDC G14.225-0.506 is associated with a network of filaments, which result in two different dense hubs, as well as with several signposts of star formation activity. The aim of this work is to study the cm continuum emission to characterize the stellar population in G14.2. We performed deep (~1.5-3uJy) radio continuum observations at 6 and 3.6cm using the VLA in the A configuration (~0.3''). We have also made use of observations taken during different days to study the presence of variability at short timescales. We detected a total of 66 sources, 32 in the northern region G14.2-N and 34 in the southern region G14.2-S. Ten of the sources are found to be variable. Based on their spectral index, the emission in G14.2-N is mainly dominated by non-thermal sources while G14.2-S contains more thermal emitters. Approximately 75% of the sources present a counterpart at other wavelengths. In the inner 0.4pc region around the center of each hub, the number of IR sources in G14.2-N is larger than in G14.2-S by a factor of 4. We also studied the relation between the radio luminosity and the bolometric luminosity, finding that the thermal emission of the studied sources is compatible with thermal radio jets. For our sources with X-ray counterparts, the non-thermal emitters follow a Guedel-Benz relation with k=0.03. We found similar levels of fragmentation between G14.2-N and G14.2-S, suggesting that both regions are most likely twin hubs. The non-thermal emission found in the less evolved objects suggests that G14.2-N may be composed of more massive YSOs as well as being in a more advanced evolutionary stage, consistent with the filament-halo gradient in age and mass from previous works. Our results confirm a wider evolutionary sequence starting in G14.2-S as the youngest part, followed by G14.2-N, and ending with the most evolved region M17.2024A&A...682A.180Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/682/A180CatalogResearchIsServedByTAP 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/A180https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/682/A180http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/682/A180https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/682/A180https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/682/A180http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/682/A180GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/682/A180/tablec1 (Parameters of the radio sources detected at C-band)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/682/A180/tablec1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/682/A180/tablec1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/682/A180/tablec1?GETtext/xml+votable180.050000true274.5551710833-16.77578591390.005555555555555556Cone search capability for table J/A+A/682/A180/tablec2 (Parameters of the radio sources detected at X-band)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/682/A180/tablec2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/682/A180/tablec2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/682/A180/tablec2?GETtext/xml+votable180.050000true274.5483986667-16.80861021390.005555555555555556Cone search capability for table J/A+A/682/A180/list (List of fits images)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/682/A180/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/682/A180/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/682/A180/list?GETtext/xml+votable180.050000true274.55207-16.833340.0055555555555555566/29113https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/682/A180?format=asciiInfraredRadiodefaultJ/A+A/682/A180/table6Spectral indices of the radio sources located in G14.2-NrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceName of the detected source (VLA-NN)meta.id;meta.maincharSCIntegrated flux detected at C-banduJyphot.flux.density;em.radiodoublee_SC? Error in the integrated flux detected at C-banduJystat.errordoublenullableSXIntegrated flux detected at X-banduJyphot.flux;em.X-raydoublee_SX? Error in the integrated flux detected at X-banduJystat.errordoublenullableSpIdSpectral indexspect.indexfloate_SpId? Error in the spectral indexstat.errorfloatnullableupp[Y/N] Upper limit?meta.codecharlow[Y/N] Lower limit?meta.codecharJ/A+A/682/A180/table7Spectral indices of the radio sources located in G14.2-SrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceName of the detected source (VLA-NN)meta.id;meta.maincharSCIntegrated flux detected at C-banduJyphot.flux.density;em.radiodoublee_SC? Error in the integrated flux detected at C-banduJystat.errordoublenullableSXIntegrated flux detected at X-banduJyphot.flux;em.X-raydoublee_SX? Error in the integrated flux detected at X-banduJystat.errordoublenullableSpIdSpectral indexspect.indexfloate_SpId? Error in the spectral indexstat.errorfloatnullableupp[Y/N] Upper limit?meta.codecharlow[Y/N] Lower limit?meta.codecharJ/A+A/682/A180/tablec1Parameters of the radio sources detected at C-bandrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceName of the detected source (VLA-NN)meta.id;meta.maincharHUB[N/S] Region where the source is locatedobs.fieldcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.maine_RAJ2000Error in the right ascensionsstat.error;pos.eq.radoubleDEJ2000Declination (J2000)pos.eq.dec;meta.maine_DEJ2000Error in the declinationarcsecstat.error;pos.eq.decdoubleScorrIntegrated flux corrected for the primary beam attenuationuJyphot.flux.density;em.radiodoublee_ScorrError in the integrated fluxuJystat.errordoubleIpeakcorrPeak intensity corrected for the primary beam attenuationuJy/beamphot.flux.density;em.radiodoublee_IpeakcorrError in the peak intensityuJy/beamstat.errordoubleSize? Size of the sourcemasphys.angSizedoublenullablePA? Position angledegpos.posAngfloatnullablee_PA? Error in the position angledegstat.errorfloatnullableJ/A+A/682/A180/tablec2Parameters of the radio sources detected at X-bandSize? Size of the sourcemasphys.angSizedoublenullablePA? Position angledegpos.posAngfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceName of the detected source (VLA-NN)meta.id;meta.maincharHUB[N/S] Region where the source is locatedobs.fieldcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.maine_RAJ2000Error in the right ascensionsstat.error;pos.eq.radoubleDEJ2000Declination (J2000)pos.eq.dec;meta.maine_DEJ2000Error in the declinationarcsecstat.error;pos.eq.decdoubleScorrIntegrated flux corrected for the primary beam attenuationuJyphot.flux.density;em.radiodoublee_ScorrError in the integrated fluxuJystat.errordoubleIpeakcorrPeak intensity corrected for the primary beam attenuationuJy/beamphot.flux.density;em.radiodoublee_PA? Error in the position angledegstat.errorfloatnullablee_IpeakcorrError in the peak intensityuJy/beamstat.errordoubleJ/A+A/682/A180/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.mainNxNumber of pixels along X-axismeta.numberintNyNumber of pixels along Y-axismeta.numberintObs.dateObservation datestime.epoch;obsnullableFreqObserved frequencyHzem.freqdoublesizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitschar