J/A+A/585/A12ivo://CDS.VizieR/J/A+A/585/A12doi:10.26093/cds/vizier.35850012CDSBailey M.van Loon J.T.Farhang A.Javadi A.Khosroshahi H.G.,Sarre P.J.Smith K.T.2018-01-04T08:22:12Z2015-12-09T08:27:38ZCDS support team

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

cds-question@unistra.frlate-type-starsline-intensitiesWe have conducted a high signal-to-noise spectroscopic survey of 670 nearby early-type stars, to map Diffuse Interstellar Band (DIB) absorption in and around the Local Bubble. The project started with a Southern hemisphere survey conducted at the European Southern Observatory's New Technology Telescope and has since been extended to an all-sky survey using the Isaac Newton Telescope. In this first paper in the series, we introduce the overall project and present the results from the Southern hemisphere survey. We make available a catalogue of equivalent-width measurements of the DIBs at 5780, 5797, 5850, 6196, 6203, 6270, 6283 & 6614{AA}, the interstellar NaI D lines at 5890 & 5896{AA}, and the stellar HeI line at 5876{AA}. We find that the 5780{AA} DIB is relatively strong throughout, as compared to the 5797{AA} DIB, but especially within the Local Bubble and at the interface with more neutral medium. The 6203{AA} DIB shows a similar behaviour, but with respect to the 6196{AA} DIB. Some nearby stars show surprisingly strong DIBs whereas some distant stars show very weak DIBs, indicating small-scale structure within as well as outside the Local Bubble. The sight-lines with non-detections trace the extent of the Local Bubble especially clearly, and show it opening out into the Halo. The Local Bubble has a wall which is in contact with hot gas and/or a harsh interstellar radiation field. That wall is perforated though, causing leakage of radiation and possibly hot gas. On the other hand, compact self-shielded cloudlets are present much closer to the Sun, probably within the Local Bubble itself. As for the carriers of the DIBs, our observations confirm the notion that these are large molecules, whose differences in behaviour are mainly governed by their differing resilience and/or electrical charge, with more subtle differences possibly related to varying excitation.2016A&A...585A..12Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/585/A12CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/585/A12https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/585/A12http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/585/A12https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/585/A12https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/585/A12http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/585/A12GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/585/A12/table1 (Catalogue of observed stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/585/A12/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/585/A12/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/585/A12/table1?GETtext/xml+votable180.050000true3.4816667-17.54536110.0055555555555555566/4251 4263 8354 12334 16443 16491 16543 16615 16689 16694 16788 16826 16896 16990 17142 17597 17695 18210 18508 18781 19017 19092 19202 19277 19525 19590 20523 20782 20834 21047 21234 21271 21430 21993 22039 22559 22645 22772 22824 22854 23005 23064 23076 23081 23102 23160 23281 23284 23442 23444 23448 24615 24796 24918 25096 25138 25259 25353 25809 25907 25939 25950 26014 26078 26353 26400 26669 26754 27282 27496 27699 27826 28711 28838 29086 29091 29193 29313 29380 29428 29519 29570 29582 29630 29876 30106 30289 30790 30897 30914 31121 31160 31169 31281 31448 31491 31497 31507 31561 31745 33059 33084 33190 33375 34914 35104 35411 35432 35529 36121 36485 36575 36817 36851 37231 37236 37286 37311 37330 37338 37536 37639 37662 37732 37768 37776 37787 37790 37816 37826 37901 38015 38223 38296 38412 38489 38561 38570 38929 39217 39220 39240 39248 39267 39513 39685 39890 40158 40223 40239 40242 40306 40478 40724 41320 41376 41606 41651 41656 41855 41866 41916-41917 42040 42080 42173 42270 42279 42300 42434 42618 42633 42640 42658 42687 42719 42728 42730 42734 42738 42740 42910 42934 42959 42985 43012 43097 43270 43272 43365 43383 43539 43647 43677 43843 43936 43969 43971 43985 44088 44227 44393 44469 44768 44785 44892 45964 46293 46368 46623 46812 46845 46903 46982 47009 47021 47028 47033 47461 47465 47474 47565 47648 47845 47925 47947 48088 48094 48186 48355 48636 48749https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/585/A12?format=asciidefaultJ/A+A/585/A12/table1Catalogue of observed starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDStar number from Henry Draper cataloguemeta.id;meta.mainintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latdoublepmRAProper motion along RAmas/yrpos.pm;pos.eq.rafloate_pmRArms uncertainty on pmRAmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion along DEmas/yrpos.pm;pos.eq.decfloate_pmDErms uncertainty on pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatplxParallaxmaspos.parallax.trigfloate_plxrms uncertainty on plxmasstat.error;pos.parallaxfloatDistDistancepcpos.distance;pos.heliocentricfloatVmagVisual magnitudemagphot.mag;em.opt.VfloatSpTypeMK Spectral typesrc.spTypecharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/585/A12/table3Spectral line measurementsfHeID3[0/2] Flag for HeI D3 (1)meta.codeintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDStar number from Henry Draper cataloguemeta.id;meta.mainintEW5780Equivalent width DIB lambda57800.1nmspect.line.eqWidthfloate_EW5780Equivalent width uncertainty DIB lambda57800.1nmstat.errorfloatR5780EW/e_EW DIB lambda5780 ratiospect.line.intensity;arith.ratiofloatEW5797Equivalent width DIB lambda57970.1nmspect.line.eqWidthfloate_EW5797Equivalent width uncertainty DIB lambda57970.1nmstat.errorfloatR5797EW/e_EW DIB lambda5797 ratiospect.line.intensity;arith.ratiofloatEW5850Equivalent width DIB lambda58500.1nmspect.line.eqWidthfloate_EW5850Equivalent width uncertainty DIB lambda58500.1nmstat.errorfloatR5850EW/e_EW DIB lambda5850 ratiospect.line.intensity;arith.ratiofloatEWHeID3Equivalent width HeI D30.1nmspect.line.eqWidthfloate_EWHeID3Equivalent width uncertainty HeI D30.1nmstat.errorfloatRHeID3EW/e_EW HeI D3 ratiospect.line.intensity;arith.ratiofloatEWNaID2Equivalent width NaI D20.1nmspect.line.eqWidthfloate_EWNaID2Equivalent width uncertainty NaI D20.1nmstat.errorfloatEWNaID1Equivalent width NaI D10.1nmspect.line.eqWidthfloate_EWNaID1Equivalent width uncertainty NaI D10.1nmstat.errorfloatRNaID2EW/e_EW NaI D2 ratiospect.line.intensity;arith.ratiofloatRNaID1EW/e_EW NaI D1 ratiospect.line.intensity;arith.ratiofloatEW6116Equivalent width DIB lambda61960.1nmspect.line.eqWidthfloate_EW6116Equivalent width uncertainty DIB lambda61960.1nmstat.errorfloatEW6203Equivalent width DIB lambda62030.1nmspect.line.eqWidthfloate_EW6203Equivalent width uncertainty DIB lambda62030.1nmstat.errorfloatR6196EW/e_EW DIB lambda6196 ratiospect.line.intensity;arith.ratiofloatR6203EW/e_EW DIB lambda6203 ratiospect.line.intensity;arith.ratiofloatEW6270Equivalent width DIB lambda62700.1nmspect.line.eqWidthfloate_EW6270Equivalent width uncertainty DIB lambda62700.1nmstat.errorfloatR6270EW/e_EW DIB lambda6270 ratiospect.line.intensity;arith.ratiofloatEW6283Equivalent width DIB lambda62830.1nmspect.line.eqWidthfloate_EW6283Equivalent width uncertainty DIB lambda62830.1nmstat.errorfloatR6283EW/e_EW DIB lambda6283 ratiospect.line.intensity;arith.ratiofloatEW6614Equivalent width DIB lambda66140.1nmspect.line.eqWidthfloate_EW6614Equivalent width uncertainty DIB lambda66140.1nmstat.errorfloatR6614EW/e_EW DIB lambda6614 ratiospect.line.intensity;arith.ratiofloatf5780[0/2] Flag for DIB lambda5780 (1)meta.codeintf5797[0/2] Flag for DIB lambda5797 (1)meta.codeintf5850[0/2] Flag for DIB lambda5850 (1)meta.codeintfNaID2[0/2] Flag for NaI D2 (1)meta.codeintfNaID1[0/2] Flag for NaI D1 (1)meta.codeintfNaDip[0/2] Flag for Na dip (1)meta.codeintf6196[0/2] Flag for DIB lambda6196 (1)meta.codeintf6203[0/2] Flag for DIB lambda6203 (1)meta.codeintf6270[0/2] Flag for DIB lambda6270 (1)meta.codeintf6283[0/2] Flag for DIB lambda6283 (1)meta.codeintf6614[0/2] Flag for DIB lambda6614 (1)meta.codeint