J/A+A/632/A115ivo://CDS.VizieR/J/A+A/632/A115doi:10.26093/cds/vizier.36320115CDSGong Y.Tang X.D.Henkel C.Menten K.M.Mao R.Q.Wang Y.Lee M.-Y.,Zhu W.S.Lin Y.Zhang S.B.Chen X.P.Yang W.J.2020-04-08T10:49:22Z2019-12-12T08:49:45ZCDS support team

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

cds-question@unistra.frmolecular-cloudsinterstellar-mediumradio-astronomyIn order to search for further observational evidence of cloud-cloud collisions in one of the promising candidates, L1188, we carried out observations of multiple molecular lines toward the intersection region of the two nearly orthogonal filamentary molecular clouds in L1188. Based on these observations, we find two parallel filamentary structures, both of which have at least two velocity components being connected with broad bridging features. We also found a spatially complementary distribution between the two molecular clouds, as well as enhanced ^13^CO emission and ^12^CO self-absorption toward their abutting regions. At the most blueshifted velocities, we unveiled a 1pc-long arc ubiquitously showing ^12^CO line wings. We discovered two 22GHz water masers, which are the first maser detections in L1188. An analysis of line ratios at a linear resolution of 0.2 pc suggests that L1188 is characterised by kinetic temperatures of 13-23K and H_2_ number densities of 10^3^-10^3.6^cm^-3^. On the basis of previous theoretical predictions and simulations, we suggest that these observational features can be naturally explained by the scenario of a cloud-cloud collision in L1188, although an additional contribution of stellar feedback from low-mass young stellar objects cannot be ruled out.2019A&A...632A.115Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/632/A115CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/632/A115https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/632/A115http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/632/A115https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/632/A115https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/632/A115http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/632/A115GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/632/A115/list (List of fits files)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/632/A115/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/632/A115/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/632/A115/list?GETtext/xml+votable180.050000true334.4976761.813530.0055555555555555566/15665https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/632/A115?format=asciiRadiodefaultJ/A+A/632/A115/listList of fits filesrecnoRecord 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.numberintNzNumber of slicesmeta.numberintnuRest frequencyMHzem.freqdoubleFWHMBeam sizearcsecphys.angSize;instr.beamintbVRADLower value of VRAD intervalm/sphys.velocdoubleBVRADUpper value of VRAD intervalm/sphys.velocdoubledVRADVRAD resolutionm/sspect.resolutiondoublesizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fits