J/A+A/694/A325ivo://CDS.VizieR/J/A+A/694/A325doi:10.26093/cds/vizier.36940325CDSHeras A.M.Eiroa C.del Burgo C.Marshall J.P.Montesinos B.2025-05-21T20:02:04Z2025-02-25T10:27:35ZCDS support team

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

cds-question@unistra.frstellar-agesinfrared-photometryWe aim to investigate the influence of the interstellar medium (ISM) on debris discs using a statistical approach. We probe the effect of the ISM on debris disc occurrence rates and on the morphologies of the discs. We used the results of the Herschel Space Observatory DUNES and DEBRIS surveys of 295 nearby FGK dwarf stars imaged at 100um and 160um. Most of the 48 debris discs in this sample have small optical depths, making them more likely to be affected by the interstellar medium (ISM) compared to optically thick discs. Since the stars of our sample are located within the Local Interstellar Cloud (LIC), we can infer that their debris discs encounter similar conditions. This allows us to use the stellar space velocity, in particular the U component, as a single indicator of the forces that can act on the debris disc dust grains when they interact with the ISM. Because older stars show a larger dispersion of space velocity values, we have investigated the impact of the debris disc ages on our results. The observed debris disc occurrence rates show a dependence on the stellar space velocities as expected under the hypothesis that stars with larger space velocities have a higher probability of losing their circumstellar dust. The percentage of sources with debris discs in our sample reaches a maximum of ~=25% for stars with low values of the space velocity component |Urel|, relative to the Local ISM, and decreases monotonically for larger |Urel| values down to the 10% level. A decrease of the average disc fractional luminosity as a function of |Urel| is also observed. These dependencies do not disappear after accounting for the reported higher dispersion of U values with age. In extended discs, the impact of the ISM could also explain the trends observed for the debris disc's projected ellipticities, position angles, and radii with the stellar space velocities. The fractional luminosities of the debris discs appear to be correlated with their position angles, suggesting that the effect of the ISM on the dust content could depend on the disc orientation. Although these indications may not be fully conclusive on their own, they collectively reinforce the hypothesis that the ISM influences the occurrence rates and morphologies of debris discs, thereby motivating additional research on the impact of the environment.2025A&A...694A.325Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/694/A325CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/350 : Gaia EDR3 (Gaia Collaboration, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/694/A325https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/694/A325http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/694/A325https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/694/A325https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/694/A325http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/694/A325GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/694/A325/tablea1 (Full sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/694/A325/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/694/A325/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/694/A325/tablea1?GETtext/xml+votable180.050000true0.543119727.08183310.0055555555555555566/4 137 684 993 2014 2317 2472 2476 2724 2747 3020 3118 3932 4250 4316 4438 4854 4942 5009 5074 5207 5304 5377 5498 5514 5522 5670 5726 5802 5836 5853 6066 6154 6308 6339 6766 6926 6941 7238 7264 7390 7595 7763 7772 7950 8094 8109 8145 8466 8476 8591 8788 8790 8843 8985 8995 9072 9125 9128 9339 9403 9442 9476 9662 9801 9835 9843 10225 10313 10375 10457 10812 10899 11034 11142 11150 11276 11290 11314 11403 11405 11620 11633 11636 11732 11806 11834 12232 12330 12340 12390 12592 12798 12890 13301 13440 14522 15170 15174 15227 15243 15356 15906 16069 16105 16412 16518 16678 16689 16692 17017 17171 17219 17425 17576 17588 17752 17875 17965 18139 18441 18553 18614 18821 19323 19585 19766 19912 20145 20278 20328 20543 20701 21060 21136 21177 21285 21568 21726 22277 22300 22708 22818 23056 23190 23201 23230 23369 24028 24713 24729 24777 24793 24924 25056 25766 25820 25966 26174 26216 26379 26462 26521 26575 26975 27088 27268 27374 27730 27954 27973 27980 28122 28180 28605 28664 30176 31087 31393 31425 31433 31478 31742 31751 32192 32619 32757 32848 32930 33116 33211 33340 33456 33552 33717 33813 33818 33849 33965 33976 34217 34345 34446 34481 34508 34817 34896 34905 35064 35079 35150 35351 35753 35802 35948 36145 36248 36288 36365 36446 36664 36697 36735 36762 37020 37408 38219 38238 39149 39441 39500 40242 40515 40679 40692 40716 40811 40932 41272 41565 41763 42022 42248 42253 43318 43850-43851 43989 44284 44482 44557 44681 44833 44891 45032 45272 45334 45412 45472 45485 45535 45564 45668-45669 45941 45982 45992 46113 46131 46244 46247 46640 46925 46956 46982 47101 47107 47137 47352 47589 47598 47910 48254 48291 48334 48355 48652 48705 48768https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/694/A325?format=asciiInfrareddefaultJ/A+A/694/A325/tablea1Full sampleSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameHipparcos (HIP) catalogue number or GJ namemeta.id;meta.maincharLdust/L*? Fractional dust luminosityphys.luminosity;arith.ratiodoublenullablePlanets[y] Detected planets (1)meta.codecharAge? Stellar ageGyrtime.agefloatnullableb_Age? Stellar age 16% posterior CDF valueGyrtime.agefloatnullableB_Age? Stellar age 84% posterior CDF valueGyrtime.agefloatnullableUvelSpace Velocity component U in Galactic coordinate systemkm/sphys.veloc;pos.cartesian.xfloatVvelSpace Velocity component V in Galactic coordinate systemkm/sphys.veloc;pos.cartesian.yfloatWvelSpace Velocity component W in Galactic coordinate systemkm/sphys.veloc;pos.cartesian.zfloatRefReferences (2)meta.refchar_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