J/ApJS/94/127ivo://CDS.VizieR/J/ApJS/94/127doi:10.26093/cds/vizier.20940127CDSFruscione A.Hawkins I.Jelinsky P.Wiercigroch A.2017-10-13T15:41:12Z2008-07-12T06:59:00ZCDS support team

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

cds-question@unistra.frinterstellar-mediumh-i-line-emissionchemical-abundancesWe compile, from the existing literature, the largest sample to date (842 data points) of hydrogen column density measurements, N(HI), of the gas in the interstellar medium. We include only results obtained from absorption measurements toward individual stars (594 in our sample) in an effort to construct a three-dimensional picture of the interstellar gas. We derive hydrogen column densities toward a fraction of the stars in the sample from published column density measurements of metal ions. A three-dimensional physical model derived from this data set will be presented in a companion paper. The observed stars span distances from a few parsecs to a few thousand parsecs, and more than half of the sample serves to describe the local interstellar medium within a few hundred parsecs of the Sun. Hydrogen column densities range from 10^17^ to 10^22^cm^-2^. We describe here the various observational methods used to estimate the hydrogen column densities and present the table with the stellar and hydrogen column density data. The provided table is intended as a global reference work, not to introduce new results.1994ApJS...94..127Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/94/127CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/54 : Atlas of Galactic Neutral Hydrogen (Hartmann+, 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/94/127https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/94/127http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/94/127https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/94/127https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/94/127http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/94/127GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/94/127/table1 (Stellar data and interstellar hydrogen column densities)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/94/127/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/94/127/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/94/127/table1?GETtext/xml+votable180.050000true1.64708329.0238890.0055555555555555566/7 174 251 252 254 257 311 418 474 689 768 771 776 780 1198 1219 1293 1430 1504 1539 1550 1558 1577 1586 1633 1704 1720 1759 1766 1769 1826 1890 2106 2246 2409 2476 2593 2619 2664 2775 2806 2884 2970 3011 3030 3053 3060 3102 3118 3136 3137 3165 3249 3250 3251 3256 3430 3693 4419 4473 5190 5506 5670 5805 5902 6219 6891 7195 7610 7763 7835 8490 8564 8566 8571 8687 8767 8790 8805 9054 9266 9433 9478 9610 9651 9680 9696 9835 9847 10375 10386 10731 10773 10783 10969 11225 11403 11599 11875 11959 12400 12472 12592 12615 12825 12865 12943 13013 13258 13268 13281 13331 13333 13557 13682 13688 13723 13729 13778 13953 13960 14008 14018 14062 14126 14167 14179 14212 14246 14302 14305 14427 14435 14522 14533 14630 14646 14653 14667 14696 14711 14743 14777 14788 14805 14810 14824 14825 14906 15250 15368 15369 15372 15375 15391 15411 15492 15561 15631 15672 15745 16023 16046 16144 16148 16275 16834 17124 17171 17219 17312 17321 17415 17425 17754 17790 18139 18439 18856 18928 19017 19025 19202 19309 19336 19340 19402 19676 19757 19912 19921 19970 19979 20000 20004 20008 20012 20028 20029 20031 20107 20113 20116 20118 20160 20171 20178 20194 20196 20198 20322 20328 20337 20404 20423 20546 20613 20759 20764 20782 20834 20861 20915 20940 21060 21177 21227 21228 21233 21401 21430 21432 21438 21439 21635 21644 21646 21647 21655 21656 21738 21879 21997 22039 22069 22207 22211 22216 22223 22246 22249 22253 22258 22264 22269 22300 22334 22517 22579 22772 22805 22837 22854 22861 22862 22870 22884 22885 22895 22904 22966 22992 22994 23007 23101 23190 23191 23230 23255 23281 23374 23442 23540 23572 23637 23644 23646 23714 23717 23763 23764 23769 23775 23789 23947 23979 24151 24179 24292 24338 24370 24462 24480 25002 25015 25487 25659 25988 25993 26521 26672 26677 26678 26780 26929 27095 27102 27190 27322 27402 27498 27574 27980 28026 28233 28259 28389 28605 28673 28687 28690 28759 28774 28796 28890 28915 28944 29001 29036 29040 29089 29208 29828 29893 30014 30229 30406 30475 30492 30506 30543 30655 30722 30818 30965 31132 31600 31705 31751 31756 31759 31776 31929 32286 32610 32738 32793 33067 33101 33243 33281 33328 33490 33639 33652 33849 34652 34676 34817 34878 34885 35064 35532 35573 36043 36220 36693 36697 37209 37231 37248 37316 37323 37330 37331 37398 37584 37585 37648 37662 37676 37732 37776 37822 37833 37865 37869 37888 37893 37897 37900 37906 37914 37926 37930 37963 38016 38024 38064 38110 38248 39075 39170 39192 39201 39202 39209 39216 39233 39243 39327 39335 39374 39671 39831 39853 39863 39873 39907 39916 39931 40068 40090 40606 41103 41249 41270 41277 41322 41374 41376 41397 41510 41610 41630 41689 41705 41738 41750 41763 41943 41973 41983 41994 42075 42080 42115 42116 42126 42236 42312 42324 42356 42366 42383 42394 42395 42408 42416 42417 42428 42449 42483 42618 42652 42671 42672 42760 42800 42948 42959 42977 42994 43014 43016 43030 43038 43040 43041 43062 43067 43099 43137 43308 43365 43400 43407 43416 43460 43494 43531 43538 43796 43809 44075 44305 44306 44312 44360 44366 44378 44389 44469 44502 44717 44822 44903 44974 45485 45564 45669 45865 45964 46615 46939 47525 47648 47781 48042 48188 48199 48497 48534 48584 48663 48799https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/94/127?format=asciiRadiodefaultJ/ApJS/94/127/table1Stellar data and interstellar hydrogen column densitiesDist? Distancepcpos.distance;pos.heliocentricdoublenullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000.0) (1)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0) (1)pos.eq.dec;meta.mainn_DEJ2000[q] q: Coordinates from Pounds et al., 1993, Cat. J/MNRAS/260/77meta.notecharHDHD (Cat. III/135) designation (1)meta.idcharNameName (1)meta.id;meta.maincharSpTypeMK spectral type (1)src.spTypecharn_SpType[r] r: SpType from Barstow et al. (2)meta.notecharVmagV magnitude (1)magphot.mag;em.opt.Vfloatn_Vmag[r] r: Vmag from Barstow et al. (2)meta.notecharl_E(B-V)Limit flag on E(B-V)meta.code.errorcharE(B-V)? Colour excessmagphot.color.excessfloatnullablen_Dist[PWYklmnr] Note on Dist (3)meta.notecharl_logNHILimit flag on logNHImeta.code.errorcharlogNHIHI column densitylog(cm**-2)phys.columnDensityfloatn_logNHI[Nij] Note on logNHI (4)meta.notechare_logNHI? rms uncertainty on logNHI if found in the referencelog(cm**-2)stat.errorfloatnullablen_e_logNHI[h] Note on e_logNHI (5)meta.notecharl_logNH2Limit flag on logNH2meta.code.error;phys.columnDensitycharlogNH2? H_2_ column densitylog(cm**-2)phys.columnDensityfloatnullablen_logNH2[g] Note on logNH2 (6)meta.notecharMethMethod used (7)meta.notecharRefReference code for E(B-V), Dist, logNHI, logNH2, unless otherwise noted, in refs.dat filemeta.noteintSimbadSimbad column added by the CDScharJ/ApJS/94/127/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference numbermeta.id;meta.mainintprimaryBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notechar