2014A&A...562A..65S


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.01CET21:52:24

2014A&A...562A..65S - Astronomy and Astrophysics, volume 562A, 65-65 (2014/2-1)

Spectrophotometric analysis of the 5200 Å region for peculiar and normal stars.

STIGLER C., MAITZEN H.M., PAUNZEN E. and NETOPIL M.

Abstract (from CDS):

Many chemically peculiar (CP) stars, especially the magnetic CP2 stars, show a flux depression at 5200Å. The Δa photometric system takes advantage of this characteristic to detect these objects in an efficient way. In addition, it is capable of finding metal-weak, emission-type, and shell-type objects of the upper main sequence. To compare available observations and to detect new peculiar objects, we used a spectrophotometric catalogue consisting of 1159 stars. From this catalogue, we selected 1067 objects to synthesize three different a indices to find the most efficient one for further observations. In addition, we extended the analysis to stars cooler than F5. We employed classical Δa photometry described by Maitzen, using simulated filter curves, the spectrophotometric Δa index by Adelman, and a modified index. Even though the accuracy of the spectrophotometry used for this investigation is significantly lower than the photometric Δa measurements, we are able to confirm peculiarity for most of the known CP2 stars above a certain limit of Δa. We investigated 631 stars hotter than spectral type F5 to find additional that are not yet identified peculiar objects. We find that for very low mass stars (M0), the a index is independent of the colour (effective temperature). The Δa photometric system is very closely correlated with the effective temperature over a wide range of the main sequence. It is able to detect any kind of peculiarity connected to the 5200Å region. Especially for low-mass stars, this opens up a new possibility of detecting peculiar objects in an efficient way.

Abstract Copyright:

Journal keyword(s): stars: chemically peculiar - stars: early-type - techniques: photometric

Simbad objects: 108

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Number of rows : 108

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 * alf And a2* 00 08 23.25988 +29 05 25.5520 1.48 1.95 2.06 2.09 2.19 B8IV-VHgMn 451 0
2 * gam Cas Be* 00 56 42.5317 +60 43 00.265 1.18 2.29 2.39 2.32 2.40 B0.5IVpe 1148 2
3 * 39 And * 01 02 54.2535609338 +41 20 42.767269460   6.104 5.932     kA3hA7VmA9 68 0
4 * phi And Be* 01 09 30.12562 +47 14 30.4594 3.84 4.18 4.25 4.22 4.27 B5IIIe 230 0
5 * 43 Cas a2* 01 42 20.5260877220 +68 02 34.890569843 5.29 5.52 5.59     A0VpSiSrEuHgMn 111 0
6 * gam02 Ari PM* 01 53 31.8118643437 +19 17 37.882581778   4.49 4.52     A2IVpSiSrCr 153 0
7 * gam01 Ari PM* 01 53 31.8192032943 +19 17 45.430793660   4.558 4.589 6.71   A0Vnp_lB 77 0
8 * eps Cas Be* 01 54 23.7261769782 +63 40 12.372216932 2.61 3.22 3.37 3.40 3.52 B3Vp_sh 180 0
9 * iot Cas a2* 02 29 03.94780 +67 24 08.9170           ~ 247 0
10 * sig Ari * 02 51 29.5861817320 +15 04 55.443794101   5.411 5.516     B7V 94 0
11 HD 18552 Be* 03 00 11.8861321435 +38 07 54.200034089 5.67 6.05 6.11     B7IVe 84 0
12 * 53 Ari bC* 03 07 25.6726547580 +17 52 47.971172068 5.18 5.997 6.117     B1.5V 133 1
13 * iot Per PM* 03 09 04.0198629 +49 36 47.799638 4.76 4.64   3.7   G0V 508 0
14 * 56 Ari a2* 03 12 14.2459541239 +27 15 25.093114957 5.22 5.64 5.76     B6IV-V 251 0
15 * zet Eri SB* 03 15 50.0253691484 -08 49 11.026245623 5.11 5.03 4.80 4.59 4.47 kA4hA9mA9V 139 0
16 * psi Per Be* 03 36 29.3798227 +48 11 33.478941 3.60 4.17 4.23     B5Ve 398 0
17 * 13 Tau Be* 03 42 18.9478060134 +19 42 00.925169042 5.41 5.68 5.69     B9Vne 94 0
18 * o Per * 03 42 22.6455526 +33 57 54.089323 4.13 4.912 4.972     B0.5V 282 0
19 * 20 Tau PM* 03 45 49.6065620 +24 22 03.886360 3.40 3.80 3.87 3.85 3.90 B8III 405 1
20 HD 23950 * 03 49 55.0667676722 +22 14 38.950974883   6.046 6.070     B8III 102 0
21 * 32 Eri B * 03 54 17.4068324561 -02 57 10.314138262   6.19 6.09     A1V 37 0
22 V* V1137 Tau a2* 04 12 51.2453721747 +22 24 48.462108078 6.04 6.31 6.12     B8III 102 0
23 * omi02 Eri Er* 04 15 16.3197260 -07 39 10.338087 5.69 5.25 4.43 3.74 3.29 K0V 751 0
24 * ome02 Tau PM* 04 17 15.6624066480 +20 34 42.949211995   5.170 4.914     A3m 113 0
25 * del03 Tau a2* 04 25 29.38340 +17 55 40.4579   4.369 4.298 6.18 4.24 A2IV-Vs 385 0
26 * 71 Tau dS* 04 26 20.7730189928 +15 37 05.788526607   4.758 4.480 5.96 4.15 F0V 211 0
27 Cl Melotte 25 OpC 04 26 54.00 +15 52 00.0           ~ 2740 0
28 * 72 Tau ** 04 27 17.4514190451 +22 59 46.785871274   5.411 5.514     B7V 94 0
29 * b Tau PM* 04 28 50.1638027833 +13 02 51.375403335   5.226 5.014 4.907 4.795 kA5hF0VmF0 178 0
30 * 88 Tau SB* 04 35 39.2552964799 +10 09 38.761498133   4.412 4.250   4.06 A5m 202 0
31 * nu. Eri bC* 04 36 19.1414419 -03 21 08.856678 2.82 3.737 3.928     B2III 373 0
32 * sig01 Tau SB* 04 39 09.2167927578 +15 47 59.292624182   5.201 5.076     A4m 84 0
33 * 11 Ori a2* 05 04 34.1491631 +15 24 14.777073   4.609 4.661     A1VpSiCr 143 0
34 * 9 Aur gD* 05 06 40.6313508866 +51 35 51.804886029       4.8   F2V 179 0
35 V* BN Cam a2* 05 12 22.4376922026 +73 56 48.038196254 4.970 5.320 5.450     B9.5VpSi 95 0
36 * mu. Lep a2* 05 12 55.9051909878 -16 12 19.653781382 2.78 3.18 3.29 3.30 3.42 B9IV:HgMn 265 1
37 V* AE Aur Or* 05 16 18.1489437436 +34 18 44.347016027 5.48 6.18 5.96     O9.5V 530 1
38 V* IQ Aur a2* 05 19 00.0284977265 +33 44 54.237390018   5.201 5.371     A0p 275 0
39 * e Ori * 05 23 56.8276764 -07 48 29.033204 5.78 5.08 4.12 3.40 2.90 G8+III 137 0
40 * psi01 Ori Be* 05 24 44.8269466961 +01 50 47.202396831 3.83 4.76 4.96 5.04 5.26 B1Vn 326 0
41 * bet Tau PM* 05 26 17.51312 +28 36 26.8262 1.03 1.52 1.65 1.66 1.76 B7III 350 1
42 * 115 Tau ** 05 27 10.0943224459 +17 57 43.947136755   5.302 5.404     B5V 122 0
43 * 116 Tau * 05 27 45.6083665942 +15 52 26.591338833   5.522 5.515     B9.5Vn 43 0
44 * 2 Mon SB* 05 59 04.3130701965 -09 33 29.702250472   5.207 5.029     A3III 86 1
45 * tet Aur a2* 05 59 43.27012 +37 12 45.3047 2.36 2.54 2.62 2.62 2.68 A0VpSi 268 0
46 * 40 Aur SB* 06 06 35.0975665420 +38 28 57.533169065   5.587 5.345     kA7IVmF2/5IIISr 80 0
47 HD 49878 PM* 07 00 04.0356116 +76 58 38.661833   5.916 4.540     K4III 70 0
48 * 15 Cnc a2* 08 13 08.8700902990 +29 39 23.577673909   5.541 5.605     B8VpSi 126 0
49 HD 68375 * 08 19 32.2896411466 +75 45 24.867833686   6.451 5.541     G8III 53 0
50 * lam Cnc * 08 20 32.1363090808 +24 01 20.324402176 5.740 5.870 5.930     B9.5V 55 0
51 HD 67934 * 08 24 33.0016940242 +82 25 50.738481315 6.330 6.310 6.280     A2Vn 25 0
52 * 50 Cnc PM* 08 46 56.0191877567 +12 06 35.830526746   5.992 5.885 7.20 5.76 A1Vp 84 0
53 * omi02 Cnc PM* 08 57 35.1992681095 +15 34 52.629804434   5.892 5.677     F0IV 59 0
54 * alf Cnc PM* 08 58 29.2106832115 +11 51 27.546169562   4.388 4.249   4.13 kA7VmF0/2III/IVSr 137 0
55 * nu. Cnc SB* 09 02 44.2662358862 +24 27 10.417540108   5.404 5.447     A0III 190 0
56 * kap Cnc a2* 09 07 44.8101438776 +10 40 05.527005225 4.70 5.13 5.24     B8IIImnp 355 0
57 * 10 LMi RS* 09 34 13.3814384371 +36 23 51.216307794   5.47 4.60     G7.5IIIb 143 0
58 * omi Leo SB* 09 41 09.0330479 +09 53 32.310183 4.22 4.01 3.52 3.11 2.88 F8-G0III+A7m 146 0
59 * 45 Leo a2* 10 27 38.9888020729 +09 45 44.616272000 5.89 5.98 6.04     B9.5IV-VpSiCrSr(Mn) 132 0
60 * bet Leo dS* 11 49 03.57834 +14 34 19.4090 2.30 2.22 2.13 2.08 2.06 A3Va 548 0
61 * gam Crv PM* 12 15 48.37081 -17 32 30.9496 2.12 2.47 2.58 2.62 2.71 B8III 229 0
62 * 12 Com SB* 12 22 30.3107569400 +25 50 46.189595360 5.56 5.30 4.81 4.34 4.01 F6III+A3V 177 0
63 HD 112014 SB* 12 49 06.6719073556 +83 25 04.220806004 5.830 5.860 5.850     A0V+A2V 56 0
64 V* DT CVn dS* 12 50 10.7399345981 +37 31 00.980973965   6.025 5.872     A5Vp_lB 92 0
65 * eps UMa a2* 12 54 01.7495922 +55 57 35.362645 1.76 1.75 1.77 1.79 1.82 A1III-IVpkB9 459 0
66 * alf02 CVn a2* 12 56 01.6662171 +38 19 06.154110 2.44 2.76 2.88 2.98 3.05 A0VpSiEu 647 0
67 * 21 CVn a2* 13 18 14.5096671922 +49 40 55.424492086   5.08 5.15     B9IV(Si) 85 0
68 * zet02 UMa SB* 13 23 56.3230195273 +54 55 18.506044965   4.05 3.88     kA1h(eA)mA7IV-V 175 1
69 * o Vir a2* 13 34 07.9318557 +03 39 32.273821 4.96 4.96 4.94 4.86 4.89 ApEuCrSr 324 0
70 HD 119765 * 13 43 54.7783012972 +52 03 51.887829000   6.027 6.018   5.98 A1V 58 0
71 * 84 UMa a2* 13 46 35.6568767342 +54 25 57.642548613   5.632 5.675     A0VpSrCrEu 148 0
72 * lam Boo dS* 14 16 23.0187965 +46 05 17.900526 4.31 4.26 4.18 4.16 4.13 A0Va_lB 330 0
73 V* CS Vir a2* 14 18 38.2580290341 -18 42 57.482173097 5.86 5.90 5.90     ApSi(Cr) 304 0
74 * lam Vir SB* 14 19 06.5923499 -13 22 15.945905 4.750 4.660 4.520   4.43 A1V 142 0
75 * pi.01 Boo * 14 40 43.5583584090 +16 25 05.960136146 4.18 4.792 4.893 4.47 4.49 B9IIIpHgMnSi 192 0
76 * bet CrB a2* 15 27 49.7315305 +29 06 20.522375 4.08 3.97 3.68 3.50 3.45 F2VpSrCrEuSi 661 0
77 * 7 CrB B * 15 39 22.2443739143 +36 38 12.586657172   5.82 5.93     B9V 50 0
78 * eps Ser PM* 15 50 48.9662218 +04 28 39.831153   3.844 3.693     kA2hA5mA7V 184 0
79 * iot CrB SB* 16 01 26.5649794279 +29 51 03.813505647   4.921 4.971     A0IIIspHgMnEu 256 0
80 * phi Her a2* 16 08 46.1668803916 +44 56 05.732213070 3.92 4.20 4.27 4.27 4.36 B9VspHgMn 283 1
81 * ome Her a2* 16 25 24.9552430446 +14 01 59.755120883 4.53 4.57 4.58 4.51 4.55 A2VpCrSr 225 0
82 * lam Her V* 17 30 44.3099693623 +26 06 38.312491922 7.53 5.85 4.41 3.37 2.62 K3.5III 124 0
83 * 102 Her * 18 08 45.4914189 +20 48 52.407870 3.38 4.177 4.347     B2IV 178 0
84 * phi Dra a2* 18 20 45.43224 +71 20 16.1499   4.15 4.22     B8V 185 0
85 * zet01 Lyr SB* 18 44 46.3573535 +37 36 18.417053 4.71 4.55 4.36 4.21 4.13 kA5hF0VmF3 188 0
86 * 5 Aql A SB* 18 46 28.5939197035 -00 57 42.091597430 6.15 6.03 5.90     kA3hA5VmA6 76 0
87 * 19 Aql PM* 19 08 59.9068381892 +06 04 23.485695093 5.590 5.570 5.230     F0III-IV 83 0
88 * 4 Cyg a2* 19 26 09.1278663193 +36 19 04.436866203 4.60 5.03 5.15     B8pSi(FeII) 135 0
89 * 13 Vul * 19 53 27.6962168153 +24 04 46.613020570 4.39 4.57 4.64     B9.5III 89 0
90 * 58 Aql * 19 54 44.7954348711 +00 16 25.053387202   5.703 5.631     B9IV 199 0
91 * 15 Vul a2* 20 01 06.0484585 +27 45 12.863884   4.829 4.651     A4III 228 0
92 * 31 Cyg Al* 20 13 37.9108031301 +46 44 28.738836638 5.50 5.08 3.80 2.83 2.07 K3Ib+B2IV-V 355 0
93 * P Cyg s*b 20 17 47.2020844 +38 01 58.552724 4.66 5.24 4.82 4.28 4.02 B1-2Ia-0ep 1140 1
94 * gam Cyg V* 20 22 13.7018357 +40 15 24.044963 3.44 2.90 2.23 1.74 1.40 F8Ib 557 0
95 * del Del dS* 20 43 27.5333833 +15 04 28.477302   4.701 4.417     kA7hF1VmF1pSrEuCr: 212 0
96 * mu. Aqr SB* 20 52 39.2327670 -08 58 59.949931   5.034 4.717     A3II 110 0
97 * gam Equ a2* 21 10 20.5001160337 +10 07 53.682085548 5.03 4.94 4.68 4.43 4.32 A9VpSrCrEu 522 0
98 * bet Cep bC* 21 28 39.5968513 +70 33 38.574681 2.05 3.01 3.23 3.33 3.55 B0.5IIIs 687 0
99 * gam Cap a2* 21 40 05.4564778 -16 39 44.307184 4.19 3.98 3.67 3.47 3.34 kF0hF1VmF2 189 0
100 * del Cap Al* 21 47 02.4442395 -16 07 38.233507 3.22 3.12 2.83 2.59 2.43 kA5hF0mF2III 262 0
101 * omi Aqr Be* 22 03 18.8440292 -02 09 19.306758 4.22 4.64 4.69 4.70 4.74 B7IVe 256 0
102 * lam Cep s*b 22 11 30.5750839949 +59 24 52.147736074 4.55 5.29 5.05 4.77 4.62 O6.5I(n)fp 651 1
103 * 2 Lac SB* 22 21 01.5472649 +46 32 11.646085 3.95 4.431 4.540     B6V 119 0
104 * bet Psc Be* 23 03 52.6134921 +03 49 12.166213 3.90 4.40 4.52 4.54 4.67 B6Ve 238 0
105 * 69 Peg a2* 23 27 40.3857636876 +25 10 02.204624149   5.913 5.979     A0IIIpHg 72 0
106 V* V436 Cas a2* 23 32 47.6484699647 +57 54 20.108514720   7.72 7.55     A0p 107 0
107 * lam Psc PM* 23 42 02.8061182 +01 46 48.148410 4.79 4.72 4.51 4.33 4.23 A7V 148 0
108 * 79 Peg PM* 23 49 39.3946855562 +28 50 32.598826403 6.270 6.140 5.960     A2m 59 0

    Equat.    Gal    SGal    Ecl

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2021.03.01-21:52:24

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