J/MNRAS/443/2815ivo://CDS.VizieR/J/MNRAS/443/2815doi:10.26093/cds/vizier.74432815CDSPribulla T.Sebastian D.Ammler-von Eiff M.Stahl O.Berndt A.,Chini R.Hoffmeister V.Mugrauer M.Neuhauser R.Vanko M.2024-08-10T20:18:19Z2015-07-28T15:09:44ZCDS support team

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

cds-question@unistra.frdwarf-starsf-starsmorgan-keenan-classificationradial-velocityWe present a spectroscopic survey of a sample of F stars that have not yet been searched for planets. The observations of 187 stars obtained with the Bochum Echelle Spectrographic Observer of the Cerro Armazones Observatory were aimed at nearby (closer than 70pc) main-sequence stars without sufficient archive ([fiber-fed extended range optical spectrograph (FEROS)/high accuracy radial velocity planet search (HARPS)]) spectroscopy. The primary goal of the survey was to select the best candidates for radial-velocity searches of extrasolar planets. The spectra were analysed using the broadening-function technique, the method of choice for rapid rotators later than about A5. The analysis was focused not only at the determination of projected rotational velocity (defining precision of radial-velocity determination), but also at the detection of previously unknown spectroscopic binaries/multiples or stars showing strong line asymmetries. 12 previously unknown spectroscopic binaries/triples were detected. For all observed targets the spectral type was determined. About 140 stars are rotating faster than the resolution limit of 10km/s sampling the onset of convection and slow rotation at mid-F spectral types in great detail. Radial-velocity precision of the data (about 100m/s) is insufficient to detect planets but could indicate most SB1 systems with stellar companions. As there are already 2-3 observations per object for these newly detected binary stars, only a few additional follow-up observations will be needed to obtain constraints on orbital parameters. We identified a sample of 68 bright F-type dwarf stars which are perfect targets for future planet searches. They rotate moderately or slowly and do not show any sign of binarity, pulsations, or surface activity.2014MNRAS.443.2815Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/443/2815CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/443/2815https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/443/2815http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/443/2815https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/443/2815https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/443/2815http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/443/2815GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/443/2815/table3 (RV variations and suitability of the targets for the exoplanet detection (non single-lined stars added at CDS))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/443/2815/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/443/2815/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/443/2815/table3?GETtext/xml+votable180.050000true0.8594969-36.25119110.0055555555555555566/277 4160 4236 4696 4776 8255 12437 12598 12686 12800 16410 16641 16679 17149 17171 17458 17758 17871 17879 17887 17893 17952 18087 18187 18277 18318 18369 18378 18694 19204 19551 19600 20503 20561 20729 21091 21125 21235 21352 21945 22240 22314 22349 22372 22485 22724 22760 22951 23026 23176 23408 23872 23889 24094 24658 24701 24861 25250 25258 25271 25555 25559 25564 25582 25584 25820 25879 26012 26221 26248 26283 26300 26345 26443 26856 27030 27081 27130 27249 27262 27534 27658 27781 28216 30078 33184 33193 33428 33496 33508 33598 33694 33704 33911 33943 34035 34096 34164 34452 34540 34617 34626 34781 34864 34896 34936 35014 35442 35444 35628 35706 35868 35872 35966 35973 35994 36079 36091 36109 36274 36391 36769 37084 37205 37616 37744 37809 37857 37912 38077 38164 38200 38208 38260 38308 38385 38387 38394 38398 38443 38595 38614 38618 38941 38986 39023 39294 39346 39607 39926 39942 40067 40262 40544 40590 40662 41523 42550 43055 43255 43397 43442 43454 43533 43562 43586 43831 43912 45409 45564 45685 45931 45975 46178 46381 46475 46548 47083 47552 47577 48309 48351 48385 48394 48541 48546 48930https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/443/2815?format=asciiOpticaldefaultJ/MNRAS/443/2815/table3RV variations and suitability of the targets for the exoplanet detection (non single-lined stars added at CDS)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_HIP[*a] * for most interesting stars, and 'a' for CDS addition (2)meta.notecharHIPHIP numbermeta.id;meta.mainintHDHD numbermeta.idintVmag[4.3/9.1] V magnitudemagphot.mag;em.opt.VfloatNp[1/7]? Number of pointingsmeta.numberintnullablevsini[5/250]? Average projected rotational velocitykm/sphys.veloc.rotat;stat.meanfloatnullableDRV[0/38]? Range of observed radial velocitykm/sinstr.bandwidthfloatnullabledvsini[0/133]? Range of rotational velocitykm/sinstr.bandwidthfloatnullablesRV[11/1076]? Expected RV precision of the targetm/sstat.stdev;phys.velocintnullableDT[0/175]? Time range of observationdtime.intervalintnullableSpTMean spectral type as determined in this paper (1)src.spTypecharSpT-MMichigan spectral type (G1)src.spTypecharSimbadSimbad 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.mainJ/MNRAS/443/2815/table1Journal of the spectroscopic observations and results of the spectroscopic analysis for individual spectraSpTMK spectral type of templatesrc.spTypecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHIPHIP numbermeta.id;meta.mainintprimaryHDHD numbermeta.idintVmag[4.3/9.1] V magnitudemagphot.mag;em.opt.VfloatHJD[55079/55286] Observation date (HJD-2400000)dtime.epochdoubleExpTime[300/1800] Exposure timestime.duration;obs.exposureintRV[-107/68]? Barycentric Radial velocity (1)km/sphys.veloc;pos.heliocentricfloatnullablee_RV[0.02/0.8]? rms uncertainty on RVkm/sstat.errorfloatnullablevsini[5/249]? Projected rotational velocitykm/sphys.veloc.rotatfloatnullablee_vsini[0.1/3.3]? rms uncertainty on vsinikm/sstat.error;phys.veloc.rotatfloatnullableNoteNote regarding the BF shape (2)meta.notecharTempHD number of the best-fitting template spectrummeta.idintSpT-MMichigan spectral type (G1)src.spTypechar