J/A+A/615/A115ivo://CDS.VizieR/J/A+A/615/A115doi:10.26093/cds/vizier.36150115CDSKhan I.Worthey G.2018-08-24T07:54:49Z2018-07-25T14:33:10ZCDS support team

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

cds-question@unistra.fro-starshorizontal-branch-starsgiant-starsspectroscopyLibraries of stellar spectra find many uses in astrophysics, from photometric calibration to stellar population synthesis. We present low resolution spectra of 40 stars from 0.2 micrometers (ultraviolet) to 1.0 micrometers (near infrared) with excellent fluxing. The stars include normal O-type stars, helium-burning stars, and post-asymptotic giant branch (PAGB) stars. Spectra were obtained with the Space Telescope Imaging Spectrograph (STIS) installed in the Hubble Space Telescope (HST) using three low resolution gratings, G230LB, G430L, and G750L. Cosmic ray hits and fringing in the red were corrected. A correction for scattered light was applied, significant only for our coolest stars. Cross-correlation was used to bring the spectra to a common, final, zero velocity wavelength scale. Finally, synthetic stellar spectra were used to estimate line of sight dust extinction to each star, and a five-parameter dust extinction model was fit, or a one-parameter fit in the case of low extinction. These spectra dovetail with the similar Next Generation Stellar Library (NGSL) spectra, extending the NGSL's coverage of stellar parameters, and extending to helium burning stars and stars that do not fuse. The fitted dust extinction model showed considerable variation from star to star, indicating variations in dust properties for different lines of sight. Interstellar absorption lines are present in most stars, notably MgII.2018A&A...615A.115Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/615/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/615/A115https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/615/A115http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/615/A115https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/615/A115https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/615/A115http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/615/A115GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/615/A115/tableb1 (List of the 40 newly observed stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/615/A115/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/615/A115/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/615/A115/tableb1?GETtext/xml+votable180.050000true63.5657042-12.73942610.0055555555555555566/1805 2238 3307 4610 5506 6146 12577 12983 13149 14248 14631 14643 15351 15631 15683 15745 16867 18454 18712 22249 22253 22660 25008 28890 29463 32954 33097 35798 37110 38016 38449 40279 41336 42312 43064 46637 488793.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/615/A115?format=asciidefaultJ/A+A/615/A115/tableb1List of the 40 newly observed starsSimbadNameSimbad column added by the CDSmeta.idcharTypeTypesrc.classcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNInternal catalog number based on the 70 SNAP-mode candidate stars (1)meta.idintNameName of the starmeta.id;meta.maincharVmagapparent magnitude through the V filtermagphot.mag;em.opt.VfloatB-VB-V colour indexmagphot.color;em.opt.B;em.opt.Vfloatn_B-V[*] * when 2MASS J-K colour index instead of B-V in B-V columnmeta.notecharTeffEffective temperatureKphys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloatAVExtinction in Vmagphys.absorption;em.opt.VfloatR? Ratio of total to selective extinction at Vphys.absorption.gal;arith.ratiofloatnullablex0? Bump positionum**-1posfloatnullablegamma? Bump widthum**-1spect.line.eqWidthfloatnullablecs? Bump strengthphys.absorptionfloatnullableRefReferencemeta.ref;pos.framecharspShow the spectrummeta.ref.urlcharFileNameName of the file with spectra in subdirectory fitsmeta.id;meta.filechar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main