J/ApJ/348/253ivo://CDS.VizieR/J/ApJ/348/253doi:10.26093/cds/vizier.13480253CDSMaggio A.Vaiana G.S.Haisch B.M.Stern R.A.Bookbinder J.,Harnden F.R.JrRosner R.2013-03-05T06:33:38Z1999-07-13T21:35:04ZCDS support team

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

cds-question@unistra.frgiant-starssupergiant-starsstellar-atmospheresx-ray-sourcesResults are presented of an extensive X-ray survey of 380 giant and supergiant stars of spectral types from F to M, carried out with the Einstein Observatory. It was found that the observed F giants or subgiants (slightly evolved stars with a mass M less than about 2 solar masses) are X-ray emitters at the same level of main-sequence stars of similar spectral type. The G giants show a range of emission more than 3 orders of magnitude wide; some single G giants exist with X-ray luminosities comparable to RS CVn systems, while some nearby large G giants have upper limits on the X-ray emission below typical solar values. The K giants have an observed X-ray emission level significantly lower than F and F giants. None of the 29 M giants were detected, except for one spectroscopic binary.1990ApJ...348..253Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/348/253CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/315/687 : X-Ray emission from solar-type stars: F and GJ/ApJ/325/798 : Einstein Survey of Hyades-cluster RegionJ/ApJ/348/557 : Einstein Survey of the Pleiades ClusterJ/ApJ/351/492 : X-ray Emission in the Ursa Major Streamhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/348/253https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/348/253http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/348/253https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/348/253https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/348/253http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/348/253GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/348/253/giants (EO Survey of Late-type Giant and Supergiant Stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/348/253/giants?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/348/253/giants?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/348/253/giants?GETtext/xml+votable180.050000true1.33601-5.708010.005555555555555556Einstein6/15 377 405 737 799 1143 1448 1504 1622 1938 1962 2017 2025 2062 2133 2229 2324 2490 2598 2970 3005 3091 3094 3240 3263 3274 3657 3749 3886 4146 4350 4444 4506 4768 4801 4820 5009 5041 5180 5284 5434 5607 5694 5982 6039 6041 6126 6219 6241 7262 7610 7696 7760 7784 8198 8207 8278 8283 8285 8492 8518 8556 8577 8669 8671 8689 8767 8844 8925 8990 9083 9093 9128 9219 9717 9723 9866 9874 10007 10055 10217 10266 10336 10407 10420 10635 10883 10916 11355 11383 11441 11547 11633 11659 11907 12009 12056 12082 12311 12400 12544 12604 12748 12960 12974 13007 13158 13201 13211 13212 13259 13282 13288 13333 13392 13494 13695 13729 13778 13947 14033 14035 14126 14259 14317 14409 14411 14431 14441 14632 14646 14649 14690 14693 14696 14800 14866 15135 15170 15217 15243 15320 15362 15363 15364 15369 15376 15405 15448 15469 15574 15633 15667 15760 16023 16035 16115 16189 16834 16941 17192 17286 17368 17397 17502 17716 17989 18038 18184 18236 18666 18783 18978 19466 19606 19777 19797 19802 19842 19912 19921 19929 19930 20102 20178 20205 20308 20358 20761 20835 20981 21089 21285 21477 21567 21568 21646 22036 22658 22805 22855 22966 23230 23525 23533 23536 23538 23539 23540 23547 23611 23765 23922 23983 23995 24048 24138 24150 24151 24333 24336 24370 24793 24877 25830 25852 26060 26543 26548 26552 26758 27248 27586 27604 27962 28034 28106 28151 28252 28538 28539 28717 28779 28804 28808 28851 28890 28972 29021 29118 29212 29340 29521 29525 29533 29923 30029 30128 30210 30216 30217 30242 30300 30339 30343 30567 30606 30643 30693 30709 30958 31112 31187 31391 31424 31475 31534 31576 31894 31967 32085 32186 32190 32516 32754 33103 33228 33286 33625 33804 33806 34446 36070 36088 36419 36534 37020 37294 37333 37343 37438 37735 37760 37871 37907 37929 38025 38027 38095 38853 38967 38973 39085 39087 39095 39154 39232 39233 39236 39238 39243 39244 39256 39272 39326 39397 39408 39789 39804 39861 39864 39893 40408 40486 40580 40670 40777 40795 40838 40885 41665 41697 42172 42198 42334 42383 42705 42779 42818 42840 42956 43529 43806 43828 44015 45032 45669 45675 46207 48344 48434 48516 48519 48525 48572 48735https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/348/253?format=asciiX-raydefaultJ/ApJ/348/253/giantsEO Survey of Late-type Giant and Supergiant StarsNameOther name (1)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHR? HR (Bright Star Catalog) number (1)meta.idintnullableHDHD (Henry Draper Catalog) number (1)meta.idintSpSpectral Type (2)src.spTypecharclass[GS] Giant/Supergiant Luminosity Class (2)src.class.luminositycharB-V? B-V color index (3)magphot.color;em.opt.B;em.opt.VfloatnullableVmagVisual magnitude (apparent) (3)magphot.mag;em.opt.VfloatMabs? Absolute magnitude (3)magphys.magAbsfloatnullableplx? Trigonometric Parallax (4)arcsecpos.parallax.trigfloatnullablemult[SMVR] Single/Multiple System Classification (5)meta.code.multipcharf_Vmag[* ] "*" indicates star with Vmag < 6.3 (5)meta.codecharSeqnoIPC sequence number (6)meta.idintobscodeObserver code (7)meta.code;obs.observercharnobsNumber of observations (8)meta.numberintf_fx[01] "1" if flux is an upper limit (9)meta.codecharfxX-ray Flux in the 0.16-4.0 keV band (10)1e-16W.m**-2phot.flux;em.X-rayfloate_fxError on X-ray Flux (10)1e-16W.m**-2stat.errorfloatf_fx/fv[01] "1" if fx/fv is an upper limit (9)meta.codecharfx/fvlog of X-ray to visual flux ratio (11)phot.flux;arith.ratiofloatf_logLx[01] "1" if logLx is an upper limit (9)meta.codecharlogLxLog of X-ray Lum. in the 0.16-4.0 keV band (12)log(1e-07W)phys.luminosity;em.X-rayfloatl_Vsini[ <] Upper limit flag to Vsini (13)meta.code.error;phys.veloc.rotatcharVsini? Rotational velocity (13)km/sphys.veloc.rotatcharr_VsiniReference for rotational velocity (13)meta.refintRAB1950Right Ascension (B1950)pos.eq.ra;meta.mainDEB1950Declination (B1950)pos.eq.dec;meta.main_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)pos.eq.decnullableindexed