J/AJ/170/26ivo://CDS.VizieR/J/AJ/170/26doi:10.26093/cds/vizier/be-5a-tCDSBao C.Ji J.Tan D.Chen G.Huang X.Wang SuDong Y.2026-08-03T07:20:09Z2026-04-01T13:31:31ZCDS support team

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

cds-question@unistra.frexoplanetsastrometryvisible-astronomyinfrared-astronomyultraviolet-astronomyThe detection and characterization of habitable planets around nearby stars persist as some of the foremost objectives in contemporary astrophysics. This work investigates the synergistic integration of astrometric and direct imaging techniques by capitalizing on the complementary capabilities of the Closeby Habitable Exoplanet Survey (CHES) and Habitable Worlds Observatory (HWO). Planetary brightness and position vary over time due to phase effects and orbital architecture, information that can be precisely provided by CHES's astrometric measurements. By combining the precise orbital constraints from CHES with the imaging capabilities of HWO, we evaluate the improvements in detection efficiency, signal-to-noise ratio, and overall planet yield. Completeness is quantified as the fraction of injected planets that are successfully detected, while yields are estimated for various scenarios using terrestrial planet occurrence rates derived from the Kepler data set. Our results indicate that prior astrometric data significantly enhance detection efficiency. Under the adopted detection limit, our analysis indicates that prior CHES observations can increase completeness by approximately 10% and improve detection efficiency by factors ranging from 2 to 30. The findings underscore the importance of interdisciplinary approaches in the search for and characterization of habitable worlds.2025AJ....170...26Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/170/26CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/135A : Henry Draper Catalogue and Extension (Cannon+ 1918-1924; ADC 1989)J/A+AS/127/1 : 1997 reference of diffuse night sky brightness (Leinert+ 1998)J/AJ/149/131 : Parameters of galactic nearby main-sequence stars (Eker+, 2015)J/AJ/158/109 : Occurrence rates of planets orbiting FGK stars (Hsu+, 2019)J/AJ/161/36 : 117 exoplanets in habitable zone with Kepler DR25 (Bryson+, 2021)J/ApJS/272/30 : Habitable Worlds Observatory (HWO): 164 targets (Harada+, 2024)J/AJ/167/139 : HPIC catalog & potential contaminants from Gaia (Tuchow+, 2024)J/PASP/137/J4402 : HWO Target Stars & Systems 2025 list (TSS25) (Tuchow+, 2025)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/170/26https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/170/26http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/170/26https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/170/26https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/170/26http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/170/26GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/170/26/table4 (Results of terrestrial planets for HWO targets)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/170/26/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/170/26/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/170/26/table4?GETtext/xml+votable180.050000true165.83414535.96988220.0055555555555555566/684 1341 1603 1875 2472 3020 3036 3102 3118 3639 3932 4438 4854 5009 5074 5304 5420 5522 5670 5836 5853 6066 6766 6926 6941 7595 7763 8109 8145 8476 8790 8985 9125 9403 9476 9835 10375 10812 10899 11403 11633 11806 12592 13301 14180 14278 14419 14459 15356 15962 16069 16412 17171 17425 17576 18139 19323 19585 19912 20328 21060 21177 21484 22040 22708 22818 23140 23190 23230 23369 23675 23974 24028 24160 24212 24713 24793 24924 25056 26975 27973 28605 28664 28696 29196 29239 29255 30576 30665 30878 30965 31433 31478 31751 32757 32848 33211 33281 33340 33552 33717 33849 34446 34817 34896 34905 35064 35351 35948 36145 36365 36446 36664 36693 36697 36983 37408 37595 38064 38238 39284 39500 39744 40078 40242 40692 40932 41763 41941 42248 42253 42285 42700 42760 43074 43639 44284 44557 45485 45535 45564 45668-45669 46113 46566 46640 46776 46925 46982 47101 47137 47589 48334 48355 48652https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/170/26?format=asciiUVOpticalInfrareddefaultJ/AJ/170/26/table4Results of terrestrial planets for HWO targetsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDHD identifier of the source (III/135A)meta.id;meta.maincharComp-Im[46.76/100] Completeness from direct imaging alone (Imaging\_Alone\_Completeness) (1)%stat.valuefloatBtC-Im[0.28/7.78] Benefit-to-Cost from direct imaging alone (Imaging\_Alone\_Benefit\_to\_Cost) (3)stat.valuefloatlowYields-Im[0.11/0.38] Lower bound on the yield from direct imaging alone (Imaging\_Alone\_Yields) (2)meta.number;stat.minfloatupYields-Im[0.16/0.78] Upper bound on the yield from direct imaging alone (Imaging\_Alone\_Yields) (2)meta.number;stat.maxfloatComp-ImAst[70.27/100] Completeness from direct imaging and astrometric data (Imaging\_Astrometry\_Completeness) (1)%stat.valuefloatBtC-ImAst[2.22/213.09] Benefit-to-Cost from direct imaging and astrometric data (Imaging\_Astrometry\_Benefit\_to\_Cost) (3)stat.valuefloatlowYields-ImAst[0.14/0.4] Lower bound on the yield from direct imaging and astrometric data (Imaging\_Astrometry\_Yields) (2)meta.number;stat.minfloatupYields-ImAst[0.21/0.84] Upper bound on the yield from direct imaging and astrometric data (Imaging\_Astrometry\_Yields) (2)meta.number;stat.maxfloatPriority[37.29/100] Target priority (4)%stat.valuefloatH24Display the Harada+2024 (J/ApJS/272/30) catalog data for sources within 1.5"meta.ref.urlintnullableT25Display the Tuchow+2025 (J/PASP/137/J4402) catalog data for sources within 1.5"meta.ref.urlintnullableSimbadNameSimbad column added by the CDSmeta.idcharnullable_RAPositions from Simbad (right ascension part)degpos.eq.ra;meta.main_DEPositions from Simbad (declination part)degpos.eq.dec;meta.main