Am stars candidates from LAMOST DR1 J/MNRAS/449/1401 ivo://CDS.VizieR/J/MNRAS/449/1401 doi:10.26093/cds/vizier.74491401 CDS Hou W. Luo A. Yang H. Wei P. Zhao Y. Zuo F. Song Y. Du B. Bai Z.,Zhang Y. Hou Y. Liu X. 2024-08-14T20:20:44Z 2016-01-06T15:16:42Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr a-stars We present a sample of metallic-line star (Am) candidates from the Large Sky Area Multi-Object Fibre Spectroscopic Telescope (LAMOST) Data Release One (DR1). According to the characteristic of underabundance of calcium and overabundance of iron element of Am stars, we propose an empirical separation curve derived from line indices of Ca ii K line and iron lines we choose for low-resolution spectra. Ultimately, 3537 Am candidates are selected from more than 30000 stars, which are classified as A-type or early F-type stars by both the LAMOST pipeline and visual inspection. Then, we carry out some analysis on this sample and finally provide a list of the Am candidates with 10 relevant parameters. Compared with other catalogues, Am candidates selected from the LAMOST DR1 are much fainter on the whole. Obviously, our list is an important complement to already known bright Am catalogues, and it offers valuable material for research on this type of chemically peculiar star. 2015MNRAS.449.1401H https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/449/1401 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to III/260 : General Catalogue of Ap and Am stars (Renson+ 2009) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/449/1401 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/449/1401 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/449/1401 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/449/1401 https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/449/1401 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/449/1401 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/MNRAS/449/1401/table4l (List with low reliability) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/449/1401/table4l? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/449/1401/table4l? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/449/1401/table4l? GET text/xml+votable 180.0 50000 true 58.160695 28.802228 0.005555555555555556 Cone search capability for table J/MNRAS/449/1401/table4m (*Major list) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/449/1401/table4m? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/449/1401/table4m? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/449/1401/table4m? GET text/xml+votable 180.0 50000 true 352.044677 30.676636 0.005555555555555556 5/310 320-321 323-324 326 332 338 341-342 344 355-357 360 415 421 435 438-440 444 451 461-462 464 466 806 1542 1568 1570-1571 1574 1577 1585 1666 1679 1689 3645 3647 3735 3772 3776 3781 5373 5439-5440 5442 5448-5449 5452 5454 5485 5525 5549 5551 5555 5558-5560 5562 5564-5565 5568 5583 5585 5587 5605 5607 5613 5615-5616 5618 5624 5626 5842 5938 5948 5950 5956-5957 5959 5966 5968 5970 6000-6001 6003 6005-6007 6013-6015 6037 6039 6082 6089 6092 6094-6095 6097-6099 6104 6116-6117 6123 6130 6140-6142 6/20 111 204 208 337 342-343 345 349 419 422 424-425 455 457 461-463 466 472 478 481 485-486 498 502 504-505 545 664 756 758 760 851-852 854 857 859 861 863 915-916 918-919 925 961 971 974 978 982-983 988 991-993 997 1014-1015 1042-1044 1046 1049 1053 1055 1077 1088 1096 1099 1103 1113 1119 1141 1149 1162 1184 1186-1187 1191-1193 1197-1198 1210 1234 1239 1244 1246-1247 1255 1269-1271 1276-1277 1279 1289 1291 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https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/449/1401?format=ascii default J/MNRAS/449/1401/table4l List with low reliability recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int Seq [1/3316] Sequential number meta.record int n_Seq [*] Note on Seq (1) meta.note char Name Designation of target in LAMOST (JHHMMSS.ss+DDMMSS.s) meta.id;phys.atmol.configuration char RAJ2000 Right ascension (J2000) deg pos.eq.ra;meta.main DEJ2000 Declination (J2000) deg pos.eq.dec;meta.main Conf [0/1] Confidence for Am type (2) stat.fit.goodness double Vmag ? V magnitude mag phot.mag;em.opt.V float nullable KType K line type (3) src.spType char MType Metallic-line type from CaII K line (3) meta.note;src.morph.type char logg ? Surface gravity log(cm.s**-2) phys.gravity float nullable e_logg ? rms uncertainty on logg log(cm.s**-2) stat.error float nullable
J/MNRAS/449/1401/table4m *Major list recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int Seq [1/3316] Sequential number meta.record int n_Seq [*] Note on Seq (1) meta.note char Name Designation of target in LAMOST (JHHMMSS.ss+DDMMSS.s) meta.id;phys.atmol.configuration char RAJ2000 Right ascension (J2000) deg pos.eq.ra;meta.main DEJ2000 Declination (J2000) deg pos.eq.dec;meta.main Conf [0/1] Confidence for Am type (2) stat.fit.goodness double Vmag ? V magnitude mag phot.mag;em.opt.V float nullable KType K line type (3) src.spType char MType Metallic-line type from CaII K line (3) meta.note;src.morph.type char logg ? Surface gravity log(cm.s**-2) phys.gravity float nullable e_logg ? rms uncertainty on logg log(cm.s**-2) stat.error float nullable Simbad Simbad column added by the CDS meta.ref.url char