III/132ivo://CDS.VizieR/III/132CDSMacConnell D.J.2017-11-10T11:16:25Z2016-06-18T18:57:30ZCDS support team

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

cds-question@unistra.frcarbon-starsOver 400 cool carbon stars were found on near-infrared spectrum plates of low-dispersion taken along the southern galactic plane. This represents an approximate 10% increase in the number of such stars known. Introduction: About 4000 optically detected carbon stars are known in the Galaxy, largely concentrated toward the galactic plane and to galactocentric distances greater than the solar circle, and significant numbers have been detected in the Magellanic Clouds and other Local Group galaxies. They are readily distinguished from stars of the normal, oxygen-rich sequence by the presence of strong bands of diatomic carbon (the defining characteristic) and of CN in their spectra, and the majority of the galactic ones have been found on red and near- infrared (lambda < 0.9 u) photographic plates taken with objective prisms mounted on Schmidt telescopes. In the early 1970's MacConnell began taking infrared plates of dispersion 3400{AA}/mm at the A-band with the Curtis Schmidt telescope at Cerro Tololo to search for cool supergiants and other stars of interest. Plates were taken along the full galactic half-circle, from l=210 to l=30, covering a band roughly 13 degrees wide centered on the galactic plane. There are typically three unwidened I-N plates on each 5x5-degree field of 5 min, 30 min, and 60 min exposure; the deep plates are ammonia-sensitized and reach I~13. The spectra cover the 680-880nm region, and the features which distinguish carbon stars in this region are the strong CN bands at 7945, 8125, and 832nm. In order for a star to be classified as carbon, it must show C bands, but these are present only blueward of the spectral range used. Stars with CN bands strong enough to be seen at this low dispersion are invariably carbon stars, usually of the cool N variety, but a survey of this type will find relatively few of the weaker-banded stars of the warmer R subtype. Table I (file "catalog.dat") presents the new carbon stars found, in order of R.A. 1950, as well as several dozen stars in Stephensons's catalogue (column GCCCS) for which improved coordinates were obtained in the present program. are accurate to about 5 arcsec in declination and to about 3 arcsec in right ascension. The visual magnitudes are estimated from a mean calibration applied to a set of direct, visual region plates of 5min exposure taken with the same telescope, and the error is probably of the order of 1mag.1988AJ.....96..354Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/III/132CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=III/132https://vizier.iucaa.in/viz-bin/VizieR-2?-source=III/132http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=III/132https://vizier.cds.unistra.fr/viz-bin/votable?-source=III/132https://vizier.iucaa.in/viz-bin/votable?-source=III/132http://vizieridia.saao.ac.za/viz-bin/votable?-source=III/132GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table III/132/catalog (The catalog (table 1 of paper))https://vizier.cds.unistra.fr/viz-bin/conesearch/III/132/catalog?https://vizier.iucaa.in/viz-bin/conesearch/III/132/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/III/132/catalog?GETtext/xml+votable180.050000true95.7953752.75902780.0055555555555555565/5206 5552 5558 9307 9311 9480 9482 10405 10407 10410 10752 6/20803 20804 20806 20807 20812 20815 20816 20822 20823 20828 20829 20837 20848 20850 20852 20855 20863 20944 20948 20949 20950 20982 21504 21508 21511 21513 21514 21515 21520 21525 21536 21537 21538 21542 21544 21545 21547 21549 21550 21552 21560 21632 21633 21638 21639 21641 21648 21649 21650 21656 21657 21659 21661 21663 21667 21669 21671 21672 21673 21675 21676 21678 21680 21682 21686 21688 21693 21694 21695 21698 21706 21731 21735 21736 21752 21754 22018 22019 22029 22031 22036 22040 22043 22046 22054 22055 22063 22064 22066 22067 22071 22072 22073 22077 22078 22079 22082 22086 22088 22093 22096 22106 22112 22113 22121 22122 22123 22124 22125 22126 22128 22137 22143 22157 22160 22162 22163 22166 22167 22171 22173 22199 22204 22213 22214 22215 22217 22219 22221 22227 22236 22238 22240 22244 22247 22305 22401 37201 37205 37206 37207 37208 37209 37211 37213 37223 37227 37232 37234 37235 37240 37242 37312 37316 37317 37328 37329 37330 37332 37889 37894 37896 37899 37902 37903 37904 37907 37908 37909 37911 37912 37914 37924 37925 37927 37937 37939 37963 37966 37985 37994 38017 38019 38020 38021 39735 39757 39761 39768 39771 39772 39775 39781 39798 39801 39869 39911 39913 39920 39921 39925 39926 39927 39930 39931 39933 39934 39935 40590 40601 40611 40618 40621 40623 40630 41533 41565 41571 41577 41579 41581 41582 41583 41613 41615 41619 41624 41626 41627 41634 41635 41636 41638 41639 41645 41646 41647 41649 41650 41652 41653 41654 41656 41657 41660 41663 41665 41672 41674 41675 41681 41682 41686 41688 41691 41692 41699 41701 41705 41713 41716 41731 41740 41741 41742 41766 41771 41779 41856 41872 41874 41879 43012 43017 43018 43022 43023 43024 43027 43040 43044 43048 43049 43136 43138 43154 43168https://cdsarc.cds.unistra.fr/viz-bin/moc/III/132?format=asciidefaultIII/132/catalogThe catalog (table 1 of paper)ID[1/466] The number of the entrymeta.id;meta.mainintprimaryRA50Right ascension hours (1950)pos.eq.rau_RA50[: ]Uncertainty flag on RAmeta.code.error;pos.eq.racharDE50Declination degrees (1950)pos.eq.decu_DE50[: ]Uncertainty flag on Declinationmeta.code.error;pos.eq.deccharu_RA00[: ] Uncertainty flag on 1900 RAmeta.code.error;pos.eq.racharu_DE00[: ]Uncertainty flag on 1900 dec.meta.code.error;pos.eq.deccharl_Vmag[><] Upper limit signmeta.code.errorcharVmag?Estimated V magnitudemagphot.mag;em.opt.Vfloatnullableu_Vmag[: v] Uncertainty flag on Vmagmeta.code.errorcharu_GCCCS[u] 'u' for uncertain as a C starmeta.code.errorcharGCCCS?Number in Stephenson's catalog (III/36) (1)meta.id.crossintnullableIRASIRAS name (cat. II/125)meta.id.crosscharu_IRAS[?] Indicates uncertainty of IRAS designationmeta.code.errorcharn_ID[1/7]? Note (2)meta.noteintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_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