J/AJ/153/218ivo://CDS.VizieR/J/AJ/153/218doi:10.26093/cds/vizier.51530218CDSChen P.S.Liu J.Y.Shan H.G.2018-07-19T12:29:59Z2018-05-30T06:55:18ZCDS support team

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

cds-question@unistra.frap-starsinfrared-photometrystellar-spectral-typesextinctionIn this paper, 426 well known confirmed Ap and Am stars are photometrically studied in the infrared. The 2MASS, Wide-field Infrared Survey Explorer (WISE), and IRAS data are employed to make analyses. The results in this paper have shown that in the 1-3 {mu}m region over 90% Ap and Am stars have no or little infrared excesses, and infrared radiations in the near-infrared from these stars are probably dominated by the free-free emissions. It is also shown that in the 3-12 {mu}m region, the majority of Ap stars and Am stars have very similar behavior, i.e., in the W1-W2 (3.4-4.6 {mu}m) region, over half of Ap and Am stars have clear infrared excesses, which are possibly due to the binarity, the multiplicity, and/or the debris disk, but in the W2-W3 (4.6-12 {mu}m) region they have no or little infrared excess. In addition, in the 12-22 {mu}m region, some of Ap stars and Am stars show the infrared excesses and infrared radiations for these Ap and Am stars are probably due to the free-free emissions. In addition, it is seen that the probability of being the binarity, the multiplicity and/or the debris disk for Am stars is much higher than that for Ap stars. Furthermore, it can be seen that, in general, no relations can be found between infrared colors and spectral types either for Ap stars or for Am stars.2017AJ....153..218Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/153/218CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986)II/274 : IRAS Point Source Reject Catalog (IRAS 1989)I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)B/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2014)I/274 : CCDM (Catalog of Components of Double Multiple stars)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)B/sb9 : SB9: 9th Catalogue of Spectroscopic Binary OrbitsI/280 : All-Sky Compiled Catalogue of 2.5 million stars (Kharchenko+ 2009)III/260 : General Catalogue of Ap and Am stars (Renson+ 2009)B/mk : Catalogue of Stellar Spectral Classifications (Skiff, 2009-2016)II/311 : WISE All-Sky Data Release (Cutri+ 2012)J/A+A/394/151 : Multiplicity among chemically peculiar stars IIJ/MNRAS/389/869 : Multiplicity among bright stellar systems (Eggleton+, 2008)J/MNRAS/427/343 : Infrared excesses of Hipparcos stars (McDonald+, 2012)J/MNRAS/437/1216 : VAST Survey. A-type stars multiplicity (De Rosa+, 2014)J/MNRAS/460/1912 : The Catalog of HgMn Stars (Ghazaryan+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/153/218https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/153/218http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/153/218https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/153/218https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/153/218http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/153/218GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/153/218/table3 (Infrared Properties of Ap, Am, and HgMn Stars in This Paper)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/153/218/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/153/218/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/153/218/table3?GETtext/xml+votable180.050000true0.181791745.25333330.0055555555555555566/89 263 350 351 375 421 455 463 481 666 714 721 819 842 962 980 1033 1119 1125 1145 1164 1287 1293 1313 1337 1521 1608 1763 1768 1973 2296 2420 2456 2490 2527 2645 2660 2664 2682 2746 2757 2818 2820 2903 2953 3030 3051 3053 3228 3266 3475 3518 3571 3586 3591 3637 3678 3694 3705 4206 4251 4297 4698 4720 4890 5805 5991 6008 6229 6268 6497 6759 6822 6847 6937 7089 7221 7338 7342 7413 7487 7494 7527 7650 7705 7734 7762 7992 8037 8291 8389 8462 8510 8772 8803 9048 9380 9589 9849 9917 9936 10000 10003 10096 10142 10151 10287 10762 10783 10791 11016 11065 11094 11109 11202 11279 11344 11356 11427 11786 12396 12523 12698 12770 12844 12847 12850 12903 12942 13052 13206 13559 13752 13771 13879 13946 14202 14238 14306 14343 14405 14443 14513 14567 14581 14718 14725 14743 14766 14802 14858 14899 14904 15261 15348 15361 15367 15424 15504 15523 15617 15760 15850 16016 16056 16104 16186 16197 16463 16577 16788 16789 16982 17064 17888 18086 18273 18508 18510 18797 19022 19610 19780 19941 20188 20263 20322 20340 20363 20369 20797 20841 21099 21196 21397 21438 21696 22020 22071 22234 22279 22400 22727 22769 22805 22815 22822 22837 22850 22854 22861 22867 22883 22884 23076 23383 23392 23403 23416 23502 23518 23526 23537 23546 23547 23574 23658 23782 23790 23860 23945 24029 24108 24189 24315 24404 24415 24440 24480 24482 24519 24562 24565 24925 25016 25649 25964 26057 26353 26364 26381 26691 26736 26758 26855 26886 27541 27756 27826 27850 27887 28035 28049 28094 28137 28142 28385 28481 28484 28503 28688 28711 28780 28859 29161 29257 29535 29660 29780 29867 30083 30269 30304 30320 30434 30438 30563 30586 30914 30919 30970 31398 31448 31511 31537 31710 31716 31744 31941 31977 32019 32096 32196 32198 32297 32384 32919 33008 33935 33997 34156 34607 34799 34875 35541 35676 35756 35772 36119 36298 36341 36563 36711 37181 37230 37270 37593 37787 37790 37814 37901 37932 38174 38287 38291 38441 38980 39008 39143 39193 39202 39204 39226 39515 39593 40356 40413 40486 40659 40783 40826 40882 40906 40943 41181 41320 41524 41562 41565 41732 41924 42035 42568 42586 42617 42663 42670 42673 42684 42740 42903 42934 42944 42949 42959 43004 43067 43127 43157 43201 43420 43460 43601 43720 43843 44043 44136 44307 44310 44352 44354 44371 44441 44451 44468 44651 44785 44844 45455 45539 46091 46436 46459 46768 46856 47349 47519 47539 47807 47824 47993 48088 48533 48562 48587 48589 48856 48896 490472.4696718532768785e-21 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/153/218?format=asciiInfrareddefaultJ/AJ/153/218/table4IRAS Observations of Ap, Am, and HgMn Stars in This PaperrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNum[4/424] Star number in this papermeta.idintIRASIRAS PSC/FSC namemeta.id;meta.maincharF12[0.0735/8.89] IRAS flux at 12{mu}mJyphot.flux.density;em.IR.8-15umdoubleq_F12[1/3] Quality flag on F12 (1)meta.code.qualintF25[0.0466/9.07] IRAS flux at 25{mu}mJyphot.flux.density;em.IR.15-30umdoubleq_F25[1/3] Quality flag on F25 (1)meta.code.qualintF60[0.0848/32.3] IRAS flux at 60{mu}mJyphot.flux.density;em.IR.30-60umdoubleq_F60[1/3] Quality flag on F60 (1)meta.code.qualintJ/AJ/153/218/table5Ap and Am Stars with (W1-W2)o>0.1 in This PaperW3mag[1.661/6.165] WISE W3 (12{mu}m) band magnitude (G2)magphot.flux.density;em.IR.8-15umfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTypeStar type (Ap or Am)src.classcharNum[12/424] Star number in this papermeta.idintn_Num[x] Note on Num (G1)meta.notecharHD[3883/223461] HD numbermeta.id;meta.mainintSpTypeSpectral classificationsrc.spTypecharW1mag[2.108/6.242] WISE W1 (3.4{mu}m) band magnitude (G2)magphot.mag;em.IR.3-4umfloatW2mag[1.559/6.105] WISE W2 (4.6{mu}m) band magnitude (G2)magphot.mag;em.IR.4-8umfloatAv[0/1.057] Galactic extinction coefficient (G2)magphys.absorptionfloat(W1-W2)o[0.1/1.283] The derived (W1-W2)o color index (G5)magphot.color;em.IR;em.IRfloatlpeak[2.1/12.1]? Wavelength with the peak infrared excess {lambda}peak (G3)umem.wl;stat.maxfloatnullableE(2-60um)[0/4.267]? Average infrared excess within 2-60{mu}m (G3)umphot.color.excessfloatnullableRefReference(s) (G4)meta.ref;pos.framecharJ/AJ/153/218/table6Ap and Am Stars with (J-H)o>0.1 in This PaperrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTypeStar type (Ap or Am)src.classcharNum[36/422] Star number in this papermeta.idintn_Num[*] Note on Num (G1)meta.notecharHD[12446/221760] HD numbermeta.id;meta.mainintSpTypeSpectral classificationsrc.spTypecharJmag[2.253/8.76] 2MASS J band magnitude (G2)magphot.mag;em.IR.JfloatHmag[2.062/8.562] 2MASS H band magnitude (G2)magphot.mag;em.IR.HfloatKsmag[2.013/8.543] 2MASS K_s_ band magnitude (G2)magphot.mag;em.IR.KfloatAv[0/1.032] Galactic extinction coefficient (G2)magphys.absorptionfloat(J-H)o[0.101/0.487] The derived (J-H)o color index (G5)magphot.color;em.IR.J;em.IR.Hfloatlpeak[2.1/12]? Wavelength with the peak infrared excess {lambda}peak (G3)umem.wl;stat.maxfloatnullableE(2-60um)[0.853/1.985]? Average infrared excess within 2-60{mu}m (G3)umphot.color.excessfloatnullableRefReference(s) (G4)meta.ref;pos.framecharJ/AJ/153/218/table7Ap and Am stars with (W3-W4)o>0.3 in This PaperrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTypeStar type (Ap or Am)src.classcharNum[6/416] Star number in this papermeta.idintn_Num[*+] Note on Num (G1)meta.notecharNameStar name (HD or other)meta.id;meta.maincharSpTypeSpectral classificationsrc.spTypecharW2mag[3.088/9.15] WISE W2 (4.6{mu}m) band magnitude (G2)magphot.mag;em.IR.4-8umfloatW3mag[3.773/9] WISE W3 (12{mu}m) band magnitude (G2)magphot.flux.density;em.IR.8-15umfloatW4mag[2.485/8.149] WISE W4 (22{mu}m) band magnitude (G2)magphot.flux.density;em.IR.15-30umfloatAv[0/0.936] Galactic extinction coefficient (G2)magphys.absorptionfloat(W3-W4)o[0.227/4.063] The derived (W3-W4)o color index (G5)magphot.color;em.IR;em.IRfloatlpeak[4.6/22]? Wavelength with the peak infrared excess {lambda}peak (G3)umem.wl;stat.maxfloatnullableE(2-60um)[1.037/2.024]? Average infrared excess within 2-60{mu}m (G3)umphot.color.excessfloatnullableRefReference(s) (G4)meta.ref;pos.framecharJ/AJ/153/218/table3Infrared Properties of Ap, Am, and HgMn Stars in This Papere_Jmag[0.017/6.841] Uncertainty in Jmagmagstat.error;phot.mag;em.IR.JfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNum[1/426] Star number in this papermeta.idintprimaryRNum[7/8205] Star number from the General Catalog of Ap and Am stars (Renson & Manfroid, 2009, Cat. III/260, Renson NNNN in Simbad)meta.idintNameStar name (HD or others)meta.id;meta.maincharRAJ2000Hour of Right Ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000) (1)pos.eq.dec;meta.mainSpTypeSpectral type (2)src.spTypecharCPType[m p HgMn] Chemical Peculiar star type (2)src.classcharAv[0/1.488]? Galactic extinction coefficientmagphys.absorptionfloatnullableJmag[1.713/9.944] 2MASS J band magnitudemagphot.mag;em.IR.JfloatHmag[1.697/9.986] 2MASS H band magnitudemagphot.mag;em.IR.Hfloate_Hmag[0.014/7.73] Uncertainty in Hmagmagstat.error;phot.mag;em.IR.HfloatKsmag[0.023/10.022] 2MASS K_s_ band magnitudemagphot.mag;em.IR.Kfloate_Ksmag[0.013/7.716] Uncertainty in Ksmagmagstat.error;phot.mag;em.IR.KfloatW1mag[0.023/10.003]? WISE W1 (3.4{mu}m) band magnitudemagphot.mag;em.IR.3-4umfloatnullablee_W1mag[0.021/7.749]? Uncertainty in W1magmagstat.error;phot.magfloatnullableW2mag[0.02/10.062]? WISE W2 (4.6{mu}m) band magnitudemagphot.mag;em.IR.4-8umfloatnullablee_W2mag[0.004/7.686]? Uncertainty in W2magmagstat.error;phot.magfloatnullableW3mag[0.014/10.091]? WISE W3 (12{mu}m) band magnitudemagphot.flux.density;em.IR.8-15umfloatnullablee_W3mag[0.006/7.13]? Uncertainty in W3magmagstat.error;phot.magfloatnullablel_W4mag[<] Limit flag on W4magmeta.code.errorcharW4mag[0.025/9.43]? WISE W4 (22{mu}m) band magnitudemagphot.flux.density;em.IR.15-30umfloatnullablee_W4mag[0.008/0.476]? Uncertainty in W4magmagstat.error;phot.magfloatnullablemoreindicates data for this star in other table(s)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar