J/ApJ/744/121ivo://CDS.VizieR/J/ApJ/744/121doi:10.26093/cds/vizier.17440121CDSYang H.Herczeg G.J.Linsky J.L.Brown A.Johns-Krull C.M.Ingleby L.,Calvet N.Bergin E.Valenti J.A.2017-06-20T13:17:29Z2013-08-05T06:37:30ZCDS support team

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

cds-question@unistra.frpre-main-sequence-starsspectroscopyultraviolet-astronomyx-ray-sourcesstar-atlasesWe present a far-ultraviolet (FUV) spectral atlas consisting of spectra of 91 pre-main-sequence stars. Most stars in this sample were observed with the Space Telescope Imaging Spectrograph and Advanced Camera for Surveys on the Hubble Space Telescope (HST). A few archival spectra from the International Ultraviolet Explorer and the Goddard High Resolution Spectrograph on HST are included for completeness. We find strong correlations among the OI{lambda}1304 triplet, the SiIV {lambda}{lambda}1394/1403 doublet, the CIV{lambda}1549 doublet, and the HeII {lambda}1640 line luminosities. For classical T Tauri stars (CTTSs), we also find strong correlations between these lines and the accretion luminosity, suggesting that these lines form in processes related to accretion. These FUV line fluxes and X-ray luminosity correlate loosely with large scatters. The FUV emission also correlates well with H{alpha}, H{beta}, and CaII K line luminosities. These correlations between FUV and optical diagnostics can be used to obtain rough estimates of FUV line fluxes from optical observations. Molecular hydrogen (H_2_) emission is generally present in the spectra of actively accreting CTTSs but not the weak-lined T Tauri stars that are not accreting. The presence of H_2_ emission in the spectrum of HD 98800N suggests that the disk should be classified as actively accreting rather than a debris disk.2012ApJ...744..121Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/744/121CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/hst : HST Archived Exposures Catalog (STScI, 2007)B/chandra : The Chandra Archive Log (CXC, 1999-2013)V/73 : Emission-Line Stars of the Orion Population (Herbig+ 1988)I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)J/MNRAS/421/78 : LMC PMS stars mass accretion rates (Spezzi+, 2012)J/AJ/139/1338 : UV-selected stars in Tau and Upper Sco (Findeisen+, 2010)J/A+A/519/A83 : T Tau stars toward the Taurus-Auriga region (Takita+ 2010)J/A+A/468/353 : XMM-Newton Extended Survey of Taurus (Guedel+, 2007)J/AJ/132/2665 : QUEST2 BRI photometry of Taurus-Auriga PMS (Slesnick+, 2006)J/ApJS/159/141 : Spectroscopic properties of cool stars. I. (Valenti+, 2005)J/ApJS/147/305 : IUE atlas of pre-main-sequence stars (Valenti+, 2003)J/AJ/124/1670 : Post-T Tauri Stars in Sco-Cen Association (Mamajek+, 2002)J/ApJ/581/1194 : Taurus-Auriga PMS stars ages and Teff (Palla+, 2002)J/AJ/119/3026 : Circumstellar disk candidates in Orion (Rebull+, 2000)J/A+AS/145/187 : uvby-{beta} photometry of WTTS (Chavarria-K+, 2000)J/AJ/117/354 : OB associations from Hipparcos (de Zeeuw+, 1999)J/A+AS/132/173 : New weak-line T Tauri stars in Taurus-Auriga (Li+ 1998)J/A+AS/124/449 : Young stars south of Taurus-Auriga (Magazzu+ 1997)J/AJ/111/846 : Orion HST survey (O'Dell+ 1996)J/A+A/312/439 : New T Tauri stars in Taurus-Auriga (Wichmann+, 1996)J/ApJS/101/117 : UBVRIJHKLMNQ photometry in Taurus-Auriga (Kenyon+ 1995)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/744/121https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/744/121http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/744/121https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/744/121https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/744/121http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/744/121GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/744/121/pms (The 91 pre-main sequence stars observations and properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/744/121/pms?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/744/121/pms?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/744/121/pms?GETtext/xml+votable180.050000true29.4540833-21.90147220.0055555555555555565/292 6/342 1029 1031 1042 1047 1048 1050 1051 1052 1054 1073 1074 1081 1083 1111 1114 1115 1124 1156 1159 1539 21438 22805 22848 23549 23550 23727 23738 24201 24269 24277 24300 24580 24608 24763 25113 28746 30741 36487 37128 38347 38363 38382 38687 38765 38800 38932 39735 41526 42605 42611 42704 42981 42990 43202 43433 43571 44316 44317 44360 44379 44401 45927 47826 47845 48274https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/744/121?format=asciiX-rayUVOpticaldefaultJ/ApJ/744/121/refsReferencesRefReference codemeta.noteintAutAuthor's name(s)meta.bib.authorcharCommCommentmeta.notecharBibCodeBibcodemeta.bib.bibcodecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ/ApJ/744/121/table4Line flux measurementsH2?H_2_ emission?meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/91] Running sequence numbermeta.id;meta.mainintNameStar name (1)meta.idcharInstInstrument (ACS, GHRS G160M, IUE or STIS E140M, STIS G140L)meta.id;instrcharOI1304? OI 1304 line flux in 10^-15^erg/s/cm^2^aW.m**-2phot.flux;spect.linefloatnullablee_OI1304? OI1304 uncertaintyaW.m**-2stat.errorfloatnullableCII? CII 1335 line flux in 10^-15^erg/s/cm^2^aW.m**-2phot.flux;spect.linefloatnullablee_CII? CII uncertaintyaW.m**-2stat.errorfloatnullableOI1355? OI 1355 line flux in 10^-15^erg/s/cm^2^aW.m**-2phot.flux;spect.linefloatnullablee_OI1355? OI1355 uncertaintyaW.m**-2stat.errorfloatnullableSi13? SiIV 1394 line flux in units of 10^-15^erg/s/cm^2^ (2)aW.m**-2phot.flux;spect.line;arith.ratiofloatnullablee_Si13? Si13 uncertaintyaW.m**-2stat.errorfloatnullableSi14? SiIV 1403 line flux in units of 10^-15^erg/s/cm^2^ (2)aW.m**-2phot.flux;spect.line;arith.ratiofloatnullablef_Si14[-] -: Line not resolved (2)meta.codechare_Si14? Si14 uncertaintyaW.m**-2stat.errorfloatnullableCIV? CIV 1549 line flux in 10^-15^erg/s/cm^2^aW.m**-2phot.flux;spect.linefloatnullablee_CIV? CIV uncertaintyaW.m**-2stat.errorfloatnullableHeII? HeII 1640 line flux in 10^-15^erg/s/cm^2^aW.m**-2phot.flux;spect.linefloatnullablee_HeII? HeII uncertaintyaW.m**-2stat.errorfloatnullableLFUV? Extinction-corrected FUV luminosity between 1250 and 1700{AA}solLumphys.luminosity;em.UVdoublenullableJ/ApJ/744/121/pmsThe 91 pre-main sequence stars observations and propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/91] Internal identification number for cross-referencingmeta.id;meta.mainintHBC[20/612]? HBC number from Herbig & Bell (1988, Cat. V/73)meta.id.crossintnullableNameStar namemeta.idcharprimaryf_Name[f] Abbreviated name (1)meta.codecharONameAlternate namemeta.idcharf_OName[f] Abbreviated OName (1)meta.codecharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainInstInstrument: ACS PR130L, GHRS G160M, IUE LWR-LO, IUE SWP-LO, STIS E140M, STIS G140LinstrcharDateUT date of observationtime.epoch;obsnullableN[1/18] Number of exposuresmeta.numberintExp[630/151200] Exposure timestime.duration;obs.exposuredoublePIDHST and IUE program ID'smeta.id;obscharf_PID[g] g: multiple program IDs: MR381, FSCJL and UK353meta.codecharSimbadNameSimbad column added by the CDSmeta.idcharRegRegionmeta.id.parentcharf_Reg[I] I: Included in primary componentmeta.codecharDist[9.9/450]? Distancepcpos.distance;pos.heliocentricfloatnullableSpTMK spectral type (F2 to M8) (2)src.spTypecharTypeCategory (WTTS or CTTS)src.classcharAv[-0.9/2.3]? Interstellar extinctionmagphys.absorptionfloatnullablelogLph[-2.72/1.79]? Log of photospheric luminositylog(solLum)phys.luminosityfloatnullablef_logLph[r] r: redometa.codecharlogLacc[-5.3/0.67]? Log of accretion luminositylog(solLum)phys.luminosityfloatnullablelogLX[28.4/31.07]? Log of X-ray (0.3-10.0keV) luminosity from literature, new Chandra and Swift observations (in erg/s)log(1e-07W)phys.luminosity;em.X-rayfloatnullablem_logLXComponent summeta.code.multipcharHb[0.34/1567]? H{beta} line flux in 10^-14^erg/s/cm^2^1e-17W.m**-2phot.flux;em.line.HbetadoublenullableCaIIK[0.0128/521]? CaIIK line flux in 10^-14^erg/s/cm^2^1e-17W.m**-2phot.flux;spect.linefloatnullableRefReference(s) (see refs.dat file)meta.ref;pos.framechar