J/A+A/698/A246ivo://CDS.VizieR/J/A+A/698/A246doi:10.26093/cds/vizier/bc-nt/lcegCDSHuang D.Liu Q.Wyatt M.C.Kennedy G.M.2026-02-27T20:00:52Z2025-06-19T08:51:55ZCDS support team

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

cds-question@unistra.frinfrared-photometryeffective-temperatureThe search for extra-terrestrial life is one of the ultimate goals for future exoplanet-seeking missions while one of the major challenges these missions face is the possible presence of warm dust, referred to as "exozodiacal" dust, near the target stars or within their habitable zone. Therefore, it is critical to identify which stars possess exozodiacal dust and quantify their exozodiacal emission levels. In this study, we conducted a search for exozodi candidates within 10 parsecs using the Reyle sample. We performed proper motion calculations and cross-matched the sample with the WISE and 2MASS database, resulting in 339 preliminary target samples. We further analyzed the infrared radiation characteristics of these targets, using spectral energy distribution (SED) fitting to predict photometric flux levels in the infrared and searching for 3sigma excesses in the WISE W3 band. During the further selection process, we applied various analysis methods to perform rigorous validation. We identified 5 exozodi candidates all of which are brown dwarfs (BDs). Given the clustering in candidate spectral types, we expect that these are not true exozodi candidates, rather the apparent excess arises from the inability of the BD photosphere models to accurately represent the SEDs of objects at the L-T transition. Indeed for the object DENIS J025503.3-470049, excess is likely due to silicate clouds in the BD atmosphere. We suggest that a more stringent 5sigma excess is required to infer excess for this spectral type. The detection rate (0/339) in our sample shows that less than 1% of M stars have exozodi above 21% excess levels. This is consistent with the rate of exozodi at similar level towards FGK stars in the Kennedy & Wyatt sample (25/24,174). We provide upper limits on the 12 micron exozodi emission for the sample, which is typically at 21% relative to the star. For most stars, in particular the low mass M stars, this is the first such upper limit in the literature.2025A&A...698A.246Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/698/A246CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/650/A201 : 10 parsec sample in the Gaia era first update (Reyle+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/698/A246https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/698/A246http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/698/A246https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/698/A246https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/698/A246http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/698/A246GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/698/A246/table1 (The stellar basic properties and photometric data of the B stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/698/A246/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/698/A246/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/698/A246/table1?GETtext/xml+votable180.050000true217.4289422-62.67949030.0055555555555555566/10 22 131 137 250 309 527 546 725 811 1307 1938 2737 2923 3005 3020 3345 3715 3751 3791 4158 4444 4462 4693 4867 4948 5000 5333 5377 5420 5534 5590 5853 6552 6672 6726 6783 6894 6974 7103 7264 7395 7512 8023 8123 8281 8440 8719 8790 9009 9339 9585 9629 9696 10027 10037 10149 10375 10448 10899 11034 11292 11496 11636 11645 11834 11940 12045 12262 12427 12454 12679 12865 13301 13451 13688 13743 13875 13885 14127 14266 14278 14351 14515 14638 14772 14858 14906 15311 15346 15355 15548 15602 15651 15960 16041 16069 16105 16391 16502 16754 16758 16827 17028 17058 17348 17425 18139 18156 18268 18281 18440 18450 18496 18666 18761 19466 19857 19910 20071 20100 20459 20468 20507 20896 20940 21060 21136 21149 21151 21660 21925 21953 22014 22040 22148 22289 22300 22309 22325 22521 22638 22645 22681 22708-22709 22739 22807 22818 23047 23230 23369 23471 23564 23723 23735 23867 23910 23975 23997 24151 24227 24345 24362 24616 24713 24924 25009 25100 26279 26327 26386 26487 26538 26560 26583 26699 26972 27201 27289 27392 27459 27462 27731 27762 28343 28548 28605 28646 28664 28955 29196 29458 29467 29539 29684 30455 30505 30543 30771 30833 30965 31019 31062 31087 31747 31751 31781 31871 32115 32229 32335 32641 32645 33166 33257 33281 33384 33425 33533 33655 33767 33964 34181 34446 34448 34535 34817 34896 35247 35490 35670 35902 36511 36526 36614 36693 36697 36971 37122 37257 37332 37377 37379 37473 37502 38039 38145 38238 38322 38456 38551 39331 39499 39683 40070 40228 40250 40430 40496 40505 40623 40801 40882 40905 40941 41591 41763 41811 42054 42255 42285 42290 42314 42459 42528 42652 42784 43187 43411 43413 43580 43598 43723 44226 44284 44286 44437 44807 44921 44937 45322 45485 45564 45669 45752 46566 46632 46718 46776 46925 46939 47061 47347 47414 47453 47589 48173 48263 48274 48652 48906 48985https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/698/A246?format=asciiInfrareddefaultJ/A+A/698/A246/table1The stellar basic properties and photometric data of the B starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of the objectsmeta.id;meta.maincharSpTypeSpectral typesrc.spTypecharDistDistancepcpos.distancefloate_DistDistance uncertaintypcstat.errorfloatTeffEffective temperatureKphys.temperature.effectiveintF12obsObserved flux in the W3 bandmJyphot.flux.density;em.IR.8-15umdoublee_F12obsObserved uncertainty in the W3 bandmJystat.errordoubleF12photPredicted photospheric flux in the W3 bandmJyphot.flux.density;em.IR.8-15umdoublee_F12photPredicted photospheric uncertainty in the W3 bandmJystat.errordoublechi12Flux excess significancestat.fit.goodnessfloatFexcess/F12photF_excess_/F_12,phot_ at 12 micronphot.flux;arith.ratiofloatF12ulUpper limit at 12 micronphot.flux.density;em.IR.8-15umfloat_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.mainSimbadNameSimbad column added by the CDSmeta.idcharnullable