J/AJ/155/23ivo://CDS.VizieR/J/AJ/155/23doi:10.26093/cds/vizier.51550023CDSSaylor D.Lepine S.Crossfield I.Petigura E.A.2018-10-15T11:40:21Z2018-09-18T12:42:59ZCDS support team

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

cds-question@unistra.frpopulation-ii-starsproper-motionsultraviolet-photometryvisible-astronomybroad-band-photometryinfrared-photometryThe K2 mission is targeting large numbers of nearby (d<100 pc) GKM dwarfs selected from the SUPERBLINK proper motion survey ({mu}>40 mas/yr, V<20). Additionally, the mission is targeting low-mass, high proper motion stars associated with the local (d<500 pc) Galactic halo population also selected from SUPERBLINK. K2 campaigns 0 through 8 monitored a total of 26518 of these cool main-sequence stars. We used the auto-correlation function to search for fast rotators by identifying short-period photometric modulations in the K2 light curves. We identified 481 candidate fast rotators with rotation periods <4 days that show light-curve modulations consistent with starspots. Their kinematics show low average transverse velocities, suggesting that they are part of the young disk population. A subset (13) of the fast rotators is found among those targets with colors and kinematics consistent with the local Galactic halo population and may represent stars spun up by tidal interactions in close binary systems. We further demonstrate that the M dwarf fast rotators selected from the K2 light curves are significantly more likely to have UV excess and discuss the potential of the K2 mission to identify new nearby young GKM dwarfs on the basis of their fast rotation rates. Finally, we discuss the possible use of local halo stars as fiducial, non-variable sources in the Kepler fields.2018AJ....155...23Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/155/23CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIV/34 : K2 Ecliptic Plane Input Catalog (EPIC) (Huber+, 2017)J/AJ/130/1247 : High proper motion stars in the DSS. III (Lepine+, 2005)J/AJ/142/138 : All-sky catalog of bright M dwarfs (Lepine+, 2011)J/ApJ/775/L11 : Stellar rotation periods for KOIs (McQuillan+, 2013)J/ApJS/224/2 : K2 EPIC stellar properties for 138600 targets (Huber+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/155/23https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/155/23http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/155/23https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/155/23https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/155/23http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/155/23GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/155/23/table2 (Low-mass Fast Rotators in K2 Campaigns 0-8)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/155/23/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/155/23/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/155/23/table2?GETtext/xml+votable180.050000true9.746918068.478116110.005555555555555556Cone search capability for table J/AJ/155/23/table6 (SUPERBLINK Stars Observed in K2 Campaigns 0-8)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/155/23/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/155/23/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/155/23/table6?GETtext/xml+votable180.050000true8.539573894.601908060.0055555555555555563/73 4/17 19 267 289 1126 1127 1133 1144 1146 1499 1502 5/67 73 75 82 85 88 97 100 101 102 1063 1067 1082 1083 1086 1155 1164 1165 1167 1200 1204 1224 4499 4502 4503 4528 4529 4531 4537 4540 4541 4543 4546 4556 4582 4583 4588 4590 5870 5871 5882 5883 5963 5965 5966 5985 5987 5988 5991 6002 6003 6006 6007 6012 6014 6085 6096 6097 12012 6/260 261 263 265 266 267 289 291 320 322 323 334 335 336 337 339 344 346 356 357 358 360 361 362 364 368 397 399 448 4246 4247 4250 4251 4262 4263 4296 4298 4300 4303 4312 4320 4322 4351 4515 4522 4523 4613 4615 4645 4665 4757 4804 4805 4820 4866 4872 4874 4875 4900 4904 17975 17981 17987 17990 17991 18002 18003 18006 18007 18120 18121 18123 18145 18147 18168 18169 18171 18177 18178 18179 18180 18182 18188 18190 18191 18202 18203 18206 18208 18210 18213 18216 18218 18219 18222 18223 18228 18230 18232 18233 18234 18236 18320 18322 18327 18356 18357 18378 18400 18441 18449 18450 18458 18466 18468 18469 18471 18473 18478 18482 18493 18499 18510 18511 18532 18536 18540 18544 18560 18563 18564 18565 18567 18568 18569 18571 18577 18580 18583 18585 18586 18588 18590 18591 18592 18608 18610 18611 18627 18630 18634 18649 18658 18660 18663 18664 18668 19537 19540 19541 19712 19713 19716 19717 23470 23471 23479 23522 23523 23526 23546 23547 23548 23550 23838 23847 23849 23851 23857 23858 23859 23868 23870 23905 23907 23909 23910 23911 23913 23916 23917 23918 23922 23938 23939 23945 23947 23956 23958 23959 23960 23961 23969 23971 23972 23974 23975 23980 23981 23983 24001 24002 24003 24004 24006 24007 24019 24022 24023 24054 24060 24062 24063 24336 24337 24349 24393 24397 24400 24401 24402 24404 25533 25576 25578 25579 25582 25587 25592 25595 25601 25604 25611 25614 25615 25616 25618 25631 25633 25636 25637 25638 25645 25647 25648 25649 25651 25653 25657 25659 25663 25672 25678 25693 25696 25698 25699 25710 25711 25712 25713 25716 25722 25725 25735 25745 25746 25747 25749 25750 25752 25753 25758 25792 25793 25795 25796 25805 25806 25807 25810 25818 25842 25864 26901 26903 26905 26907 26909 26929 26935 26945 26953 26955 26974 26979 26984 27072 28941 28951 28955 28977 28999 29012 29025 29048 29226 29312 29349 29351 29353 29696 30725 30726 30729 30744 42874 42903 42933 42944 42955 42967 42974 42975 42977 42979 42983 42984 42989 42993 42995 42998 43003 43004 44304 44305 44310 44313 44316 44319 44361 44371 44373 44376 44378 44387 44718 44723 44728 44729 44731 44770 44774 44776 44777 48047 48053 48055 48056 48058 48068 48070 48071 48073 48076 48088 48089 48111 48511https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/155/23?format=asciiUVOpticalInfrareddefaultJ/AJ/155/23/table2Low-mass Fast Rotators in K2 Campaigns 0-8SimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSBSource name (PM IHHMMm+DDMMWw)meta.id;meta.maincharEPICName in Ecliptic Plane Input Catalog (Huber et al. 2016, J/ApJS/224/2)meta.idlongRA_ICRSRight Ascension in decimal degrees (ICRS)degpos.eq.ra;meta.mainDE_ICRSDeclination in decimal degrees (ICRS)degpos.eq.dec;meta.mainpmRA[-0.443/1.221] Proper motion in Right Ascension (pmRA*cosDE)arcsec/yrpos.pm;pos.eq.rafloatpmDE[-2.669/0.298] Proper motion in Declinationarcsec/yrpos.pm;pos.eq.decfloatNUV[12.22/24.61]? GALEX near-UV magnitudemagphot.mag;em.UVfloatnullableVmag[5.61/21.1] Kepler V magnitudemagphot.mag;em.optfloatV-J[-1.76/6.77]? Color using 2MASS infrared J magnitudemagphot.color;em.opt.V;em.IR.JfloatnullableProt[0.12/3.99]? Calculated photometric rotation period (not in Table 6)dtime.period;meta.modelledfloatnullablee_Prot[0/1.433]? Uncertainty in Prot (not in Table 6)dstat.errorfloatnullableA[0.03/2.58]? Amplitude of the auto-correlation function (ACF) peak (not in Table 6) (1)stat.correlationfloatnullableB[2/16.9]? Spacing of aliases in the ACF (not in Table 6) (2)stat.correlationfloatnullablesigma[0/0.552]? Amplitude of the rotation modulation (not in Table 6) (3)src.var.amplitudefloatnullableNK2[0/8] K2 campaign numbermeta.id;obsintJ/AJ/155/23/table6SUPERBLINK Stars Observed in K2 Campaigns 0-8recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSBSource name (PM IHHMMm+DDMMWw)meta.id;meta.maincharEPICName in Ecliptic Plane Input Catalog (Huber et al. 2016, J/ApJS/224/2)meta.idlongRA_ICRSRight Ascension in decimal degrees (ICRS)degpos.eq.ra;meta.mainDE_ICRSDeclination in decimal degrees (ICRS)degpos.eq.dec;meta.mainpmRA[-0.443/1.221] Proper motion in Right Ascension (pmRA*cosDE)arcsec/yrpos.pm;pos.eq.rafloatpmDE[-2.669/0.298] Proper motion in Declinationarcsec/yrpos.pm;pos.eq.decfloatNUV[12.22/24.61]? GALEX near-UV magnitudemagphot.mag;em.UVfloatnullableVmag[5.61/21.1] Kepler V magnitudemagphot.mag;em.optfloatV-J[-1.76/6.77]? Color using 2MASS infrared J magnitudemagphot.color;em.opt.V;em.IR.JfloatnullableNK2[0/8] K2 campaign numbermeta.id;obsint