J/AJ/151/143ivo://CDS.VizieR/J/AJ/151/143doi:10.26093/cds/vizier.51510143CDSHaris U.Parvathi V.S.Gudennavar S.B.Bubbly S.G.Murthy J.,Sofia U.J.2018-05-17T12:09:06Z2018-04-16T12:05:32ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyinterstellar-mediumstellar-spectral-typesstellar-distanceextinctionWe report interstellar silicon (Si) depletion and dust-phase column densities of Si along 131 Galactic sight lines using archival observations. The data were corrected for differences in the assumed oscillator strength. This is a much larger sample than previous studies but confirms the majority of results, which state that the depletion of Si is correlated with the average density of hydrogen along the line of sight (<n(H)>) as well as the fraction of hydrogen in molecular form (f(H_2_)). We also find that the linear part of the extinction curve is independent of Si depletion. Si depletion is correlated with the bump strength (c_3_/R_V_) and the FUV curvature (c_4_/R_V_) suggesting that silicon plays a significant role in both the 2175{AA} bump and the FUV rise.2016AJ....151..143Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/151/143CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/94/127 : Distribution of H I in the ISM. I. (Fruscione+, 1994)J/ApJS/163/282 : Molecular hydrogen column densities (Wakker+, 2006)J/A+A/528/A92 : HERES VI. Galactic chemical evolution of Si and CJ/ApJS/199/8 : A compilation of interstellar column densitieshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/151/143https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/151/143http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/151/143https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/151/143https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/151/143http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/151/143GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/151/143/Table13 (Column densities of silicon (table 1) , hydrogen (table 3) and other sight line parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/151/143/Table13?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/151/143/Table13?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/151/143/Table13?GETtext/xml+votable180.050000true206.884749.31630.0055555555555555566/474 1060 1196 1198 1293 1539 1558 1633 1766 2409 3030 3053 3060 3136 3214 3430 5506 9433 9696 10731 13268 13557 14008 14179 14263 14653 14805 14824 14825 15369 15375 15478 15580 15631 15663 15672 15748 16046 18439 18928 19676 19757 20107 20423 20613 20764 20915 21233 21401 21438 21439 21655 22249 22579 22772 22854 22862 22884 22885 22966 22992 22994 23637 23717 23780 23851 23979 24338 24370 25659 27498 28687 28890 29089 30709 30722 30818 31705 36043 37331 37662 37822 37900 37930 38016 39075 39202 39209 39216 39327 39374 39907 39916 40068 41103 41630 41689 41692 41750 42080 42116 42236 42356 42366 42383 42394 42408 42416 42417 42470 42483 42618 42948 42977 42994 43062 44305 44312 44360 44389 48497https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/151/143?format=asciidefaultJ/AJ/151/143/table4*Extinction ParametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarTarget star identifiermeta.id;meta.mainchar1/RV[0.17/0.5] Inverse of ratio of total to selective extinction (1)phys.absorptionfloate_1/RV[0.01/0.16] Uncertainty in 1/RVstat.errorfloatc1/RV[0.4/1.82] Parameter (c_1_/R_V_) for the intercept of the non-linear FUV rise of the extinction curve (2)stat.fit.paramfloate_c1/RV[0.09/1.05] Uncertainty in c1/RV (2)stat.errorfloatc2/RV[0/0.45] Parameter (c_2_/R_V_) for the slope of the non-linear FUV rise of the extinction curve (2)stat.fit.paramfloate_c2/RV[0/0.15] Uncertainty in c2/RV (2)stat.errorfloatc3/RV[0.23/1.87] Parameter (c_3_/R_V_) for the 2175{AA} bump strength of the non-linear FUV rise of the extinction curve (2)stat.fit.paramfloate_c3/RV[0.04/0.41] Uncertainty in c3/RV (2)stat.errorfloatc4/RV[0.01/0.39] Parameter (c_4_/R_V_) for the strength of the non-linear FUV rise of the extinction curve (2)stat.fit.paramfloate_c4/RV[0.01/0.1] Uncertainty in c4/RV (2)stat.errorfloatJ/AJ/151/143/Table13Column densities of silicon (table 1) , hydrogen (table 3) and other sight line parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarTarget star identifiermeta.id;meta.maincharprimarymoreindicates extinction parameters data in table 4meta.ref.urlcharGLON[6.01/357.93] Galactic longitude (1)degpos.galactic.lonGLAT[-62.73/65.32] Galactic latitude (1)degpos.galactic.latSpTypeMK spectral type (1)src.spTypecharDist[0.032/5] Distance (1)kpcpos.distance;pos.heliocentricfloatE(B-V)[0/0.78]? The (B-V) color excess (1)magphot.color.excessfloatnullablee_E(B-V)[0.01/0.08]? Uncertainty in E(B-V) (1)magstat.errorfloatnullableN(SII)? Revised Si column density (2)cm**-2phys.columnDensitydoublenullableE_N(SII)? Upper uncertainty in N(SII) (2)cm**-2stat.error;stat.maxdoublenullablee_N(SII)? Lower uncertainty in N(SII) (2)cm**-2stat.errordoublenullableN(H)Hydrogen column density (1)cm**-2phys.columnDensitydoubleE_N(H)? Upper uncertainty in N(H) (1)cm**-2stat.error;stat.maxdoublenullablee_N(H)? Lower uncertainty in N(H) (1)cm**-2stat.errordoublenullablelogn(H)Logarithm of <n(H)> (2)stat.fit.paramdoublelogf(H2)? Logarithm of f(H_2_) (3)phys.columnDensitydoublenullableNSiDustColumn density of silicon in dust (4)cm**-2phys.columnDensitydoubleE_NSiDust? Upper uncertainty in NSiDustcm**-2stat.error;stat.maxdoublenullablee_NSiDust? Lower uncertainty in NSiDustcm**-2stat.errordoublenullableD(Si)[-2.7515/0.5502] Silicon depletion (5)phys.abundfloatE_D(Si)? Upper uncertainty in D(Si)stat.error;stat.maxdoublenullablee_D(Si)? Lower uncertainty in D(Si)stat.errorfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)degpos.eq.decnullableindexed