J/AJ/170/266ivo://CDS.VizieR/J/AJ/170/266CDSSon S.-M.Cho S.-H.Kim J.Baek H.Yoon D.-H.Suh K.-W.2026-06-08T11:26:41Z2026-06-08T12:19:17ZCDS support team

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

cds-question@unistra.frastrophysical-masersradio-astronomyinterstellar-maserslate-type-starsgiant-starsvery-long-baseline-interferometryradio-sourcesinterferometrymorgan-keenan-classificationradial-velocitymolecular-physicsco-line-emissionWe present the observational results of Simultaneous Multi-mAser Survey Toward Evolved Stars (SMASTES) II for 150 S-type asymptotic giant branch stars. Observations have been performed from 2023 September to 2024 March using the upgraded wide four-band (22/43/86/129GHz) receiving system of the Korean VLBI Network. For simultaneous observations, 19 molecular lines of H_2_O and multitransitions of SiO masers including several thermal lines were set up together. H_2_O maser was not detected from any stars among 150 S-type stars. For SiO v=1: J=1-0, J=2-1, and J=3-2 masers were detected from nine, thirteen, and six stars, respectively. For SiO v=2: J=1-0, J=2-1, and J=3-2 masers were detected from five, two, and two stars, respectively. In particular, for v=1: J=1-0, J=2-1, and J=3-2 masers were all detected from five stars. For SiO v=0: J=1-0, J=2-1, and J=3-2 lines in ground vibrational state were detected from five, six, and seven stars, respectively, including the 29SiO v=0: J=1-0 and J=2-1 lines. For SiO v=0: J=1-0, J=2-1, and J=3-2 lines were detected in more stars at higher rotational transition lines. The carbon-bearing molecule HCN was detected from four stars. Based on these observational results, we perform statistical analyses on detection rates of maser and thermal lines, maser properties, and kinematics comparing with the results of M-type stars (SMASTES I). The characteristics of maser properties are investigated in the IRAS two-color diagram in relation to the evolutionary stage.2025AJ....170..266Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/170/266CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+AS/129/363 : IRAS flux densities of S stars (Jorissen+, 1998)J/AJ/144/129 : Properties of 83 known stellar SiO maser sources (Cho+, 2012)J/A+A/601/A10 : A grid of MARCS model atmospheres for S stars (Van Eck+, 2017)J/A+A/617/A132 : Abundances and distributions of CS and SiS (Danilovich+, 2018)J/AJ/158/22 : New IR study of intrinsic & extrinsic S-type stars (Chen+, 2019)J/A+A/642/A20 : W Aql APEX spectrum (De Beck+, 2020)J/A+A/653/A53 : DEATHSTAR. II. The S-type (Andriantsaralaza+, 2021)J/ApJ/931/133 : S-type stars from LAMOST MRS DR9 with Gaia DR2 (Chen+, 2022)J/A+A/660/A94 : Observational properties of ATOMIUM project (Gottlieb+, 2022)J/A+A/692/A86 : Millimetre observations of chi Cygni (Hoai+, 2024)J/A+A/681/A50 : ATOMIUM. Molecular inventory (Wallstrom+, 2024)J/AJ/170/84 : SMASTES.I. KVN obs. SiO & H2O masers from AGB stars (Baek+, 2025)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/170/266https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/170/266http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/170/266https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/170/266https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/170/266http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/170/266GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/170/266/table1 (List of observed sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/170/266/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/170/266/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/170/266/table1?GETtext/xml+votable180.050000true0.53079167-14.675841670.0055555555555555566/1064 1622 1660 1754 1771 1820 1921 2056 2305 2335 2500 2549 2556 2566 2578 2694 2743 2773 2787 2795 2858 2888 3012 3033 3153 3236 3432 3496 3713 3723 3801 3858 3952 4663 4798 4972 6257 6699 6707 6845 6919 7103 7881 9589 9968 11016 11227 12260 12857 12875 13030 13205 13240 13282 13301 13676 13711 13741-13742 13971 14051 14147 14175 14236 14312 14323 14325 14349 14457 14468 14593 14620 14636 14659 14757 14769 14843 15107 15170 15232 15375 15378 15392 15526 15740 15746 15877 16274 16783 17178 19813 20753 20768 20820 20945 21317 21522 21548 21561 21564 21566 21580 21663 22035 22053 22099 22110 22173 22204 22304 22407 22448 23597 23846 23932 23949 23967 24108 24146 24365 24418 24513 27504 29012 29045 29145 29401 29767 29832 29877 30062 30119 30185 30245 30283 30302 30457 30488 30526 31876 32384 40162 40164 40384 40476 40491 40562 40594 42850 48803https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/170/266?format=asciiOpticalRadiodefaultJ/AJ/170/266/table1List of observed sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNum[1/150] Numbermeta.idintNameSource identifiermeta.id;meta.maincharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainSpTypeSpectral typesrc.spTypecharRVel[-78/86] Radial velocity of the central starkm/sspect.dopplerVelocfloatTA-SiOv2[1.3/253]? SiO (v=2, J=2-1) peak antenna temperatureKphot.antennaTempfloatnullableTA-SiOv1[0.4/142]? SiO (v=1, J=2-1) peak antenna temperatureKphot.antennaTempfloatnullableTA-CO(1-0)[1.06/45]? CO(1-0) peak antenna temperatureKphot.antennaTempfloatnullableTA-CO(2-1)[1.06/45]? CO(2-1) peak antenna temperatureKphot.antennaTempfloatnullableC/O[0.7/0.99]? C/O ratio (when available)phys.abundfloatnullableRefReference codes (1)meta.refcharSimbadSimbad column added by the CDSmeta.ref.urlchar