2018A&A...616A.135M


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST14:36:05

2018A&A...616A.135M - Astronomy and Astrophysics, volume 616A, 135-135 (2018/8-1)

Quantitative spectral classification of Galactic O stars.

MARTINS F.

Abstract (from CDS):

Our goal is to provide a quantification of several spectral classification criteria for O stars. We collect high-spectral resolution spectra of 105 Galactic O-type stars from various archives. We measured equivalent widths of classification lines. We defined average values of classification criteria for given spectral types and luminosity classes. We find that the ratio HeI 4471 to HeII 4542 well matches the published ratios for spectral types. We have quantified equivalent width ratios of helium and silicon lines among O8-O9.7 stars to refine spectral class typing in this spectral range. We present quantitative criteria to separate between luminosity class V,IV-III-II (grouped), andI among O3-O8.5 stars, mainly based on the strength of HeII 4686. We find that these criteria also define very well the f, (f), and ((f)) classes for O3-O7.5 stars. Among O9-O9.7 stars we quantify the ratios of HeII 4686 to HeI 4713 and SiIV 4089 to HeI 4026 for all luminosity classes. The tabulated values of the classification criteria should help classify any new O-type stars. The final step of the classification process should rely on a direct comparison to standard stars of the assigned spectral type or luminosity class.

Abstract Copyright: © ESO 2018

Journal keyword(s): stars: massive - techniques: spectroscopic

Status at CDS:   Objects in title, abstract, text, figures, and all or part of small table(s) being processed in SIMBAD.

Simbad objects: 105

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Number of rows : 105

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HD 225146 s*b 00 03 57.5026343253 +61 06 13.091743443 8.32 8.96 8.60     O9.7Iab 80 0
2 HD 225160 s*b 00 04 03.7942401494 +62 13 19.008096888 7.74 8.46 8.19     O8Iabf 112 0
3 HD 12993 V* 02 09 02.4746903345 +57 55 55.949415364 8.38 9.13 8.98     O6.5V((f))Nstr 137 0
4 HD 13268 * 02 11 29.7002216680 +56 09 31.717631935 7.48 8.24 8.18     ON8.5IIIn 161 0
5 HD 13745 bC* 02 15 45.9348133590 +55 59 46.728415082 7.22 7.99 7.90     O9.7II(n) 158 1
6 HD 14633 SB* 02 22 54.2920198726 +41 28 47.723244543 6.14 8.79 8.73 8.69   ON8.5V 207 0
7 HD 15137 SB* 02 27 59.8115835376 +52 32 57.594553098 7 7.92 7.86     O9.5II-IIIn 113 0
8 BD+60 499 Y*O 02 32 16.7516820640 +61 33 14.995570935 10.27 10.85 10.31     O9.5V 59 0
9 HD 15558 Y*O 02 32 42.5366735903 +61 27 21.582983306 7.82 8.37 7.87 7.34 6.94 O4.5III(f) 294 0
10 HD 15570 Em* 02 32 49.4205362766 +61 22 42.089023028 8.40 8.80 8.11 7.41 6.86 O4If 282 0
11 HD 16429 SB* 02 40 44.9745976044 +61 16 56.068338055 7.91 8.29 7.67     O9.5III+F4V 150 1
12 HD 16691 Em* 02 42 52.0259528193 +56 54 16.462912273 10.187 9.07 8.70     O4If 141 0
13 HD 17505 ** 02 51 07.97514 +60 25 03.8720 6.83 7.47 7.07     O6.5III((f))n+O8V 181 0
14 HD 17603 * 02 51 47.7980122812 +57 02 54.467517969 8.68 9.10 8.45     O7.5Ib(f) 85 0
15 HD 24431 ** 03 55 38.4225403937 +52 38 28.738582945 6.50 7.11 6.74 6.36 6.10 O9III 151 0
16 * ksi Per ** 03 58 57.9022917 +35 47 27.713205 3.190 4.080 4.060 3.88 3.89 O7.5III(n)((f)) 789 0
17 * alf Cam s*b 04 54 03.0103983 +66 20 33.636467 3.47 4.34 4.29 4.18 4.18 O9Ia 635 1
18 V* AE Aur Or* 05 16 18.1489437436 +34 18 44.347016027 5.48 6.18 5.96     O9.5V 524 1
19 HD 34656 Em* 05 20 43.0823042222 +37 26 19.213246169 5.87 6.77 6.76     O7.5II(f) 191 0
20 HD 242926 * 05 22 40.0952905623 +33 19 09.406349570 9.04 9.65 9.40     O7Vz 76 0
21 HD 35619 * 05 27 36.1462913996 +34 45 18.997406116 8.08 8.79 8.66     O7.5V((f))z 103 0
22 * ups Ori V* 05 31 55.8601879 -07 18 05.537157 3.30 4.36 4.63 4.75 5.01 O9.7V 379 0
23 * del Ori Al* 05 32 00.40009 -00 17 56.7424 0.96 2.02 2.41 2.32 2.54 B0III+O9V 742 0
24 HD 36483 * 05 33 41.1522074901 +36 27 34.967636275 8.06 8.55 8.24     O9.5IV(n) 46 0
25 * lam Ori A Em* 05 35 08.2792540686 +09 56 02.955355445 2.17 3.48 3.47     O8III((f)) 484 0
26 HD 36879 * 05 35 40.5264637356 +21 24 11.723003025 6.97 7.69 7.58     O7V(n)((f))z 132 0
27 * sig Ori Y*O 05 38 44.7665260139 -02 36 00.284709290 2.54 3.58 3.79 3.87 4.11 O9.5V 738 0
28 * mu. Col V* 05 45 59.8953630749 -32 18 23.164726112 3.84 4.90 5.18 5.30 5.57 O9.5V 456 0
29 HD 42088 * 06 09 39.5726383124 +20 29 15.455220620 6.73 7.58 7.57 8.45   O6V((f))z 231 0
30 HD 258691 * 06 30 33.3081907645 +04 41 27.531212864 9.78 10.27 9.70     O9V 28 0
31 HD 46106 * 06 31 38.3971787778 +05 01 36.401702672 7.33 8.08 7.93 7.76 7.66 O9.7III(n) 139 0
32 HD 46149 SB* 06 31 52.5314050362 +05 01 59.186016432 7.03 7.80 7.61 7.54 7.36 O8.5V 256 0
33 HD 46150 Em* 06 31 55.5205503719 +04 56 34.302522479 6.03 6.86 6.73 6.50 6.41 O5V((f))z 370 0
34 HD 46223 * 06 32 09.3066083011 +04 49 24.707398183 6.73 7.50 7.28 6.95 6.79 O4V((f)) 351 0
35 HD 46202 ** 06 32 10.4728 +04 57 59.818 7.60 8.36 8.19 7.98 7.86 O9.2V 256 0
36 HD 46966 ** 06 36 25.8880483410 +06 04 59.483890115 5.91 6.83 6.87     O8.5IV 190 0
37 HD 47432 Pu* 06 38 38.1876436469 +01 36 48.677975295 5.67 6.44 6.31 6.11 6.04 O9.7Ib 172 1
38 * 15 Mon Be* 06 40 58.65963 +09 53 44.7229 3.360 4.400 4.640   4.88 O7V+B1.5/2V 746 0
39 HD 48279 ** 06 42 40.54719 +01 42 58.2571 7.26 8.03 7.86     O8V+F2V 138 0
40 HD 55879 * 07 14 28.2530122374 -10 18 58.483790697 4.88 5.85 6.03 7.35   O9.7III 152 0
41 HD 64568 * 07 53 38.2052171216 -26 14 02.593344803 8.64 9.50 9.39 9.77 9.204 O3V((f*))z 90 0
42 * zet Pup BY* 08 03 35.04754 -40 00 11.3321 0.89 1.98 2.25 2.36 2.58 O4I(n)fp 1091 1
43 HD 66788 * 08 04 08.5402852477 -27 29 08.858514821 8.44 9.92 9.83 9.85   O8/9(Ib) 52 0
44 CD-47 4551 s*b 08 57 54.6180323134 -47 44 15.698082312 9.11 9.41 8.54 8.92   O5Ifc 67 0
45 HD 93204 * 10 44 32.3390160673 -59 44 31.020859370 7.63 8.52 8.42 8.20 7.92 O5.5V((f)) 172 0
46 V* V560 Car SB* 10 44 33.7392630703 -59 44 15.434160993 6.89 7.80 7.75 7.56 7.46 O3.5V((f))+O8V 278 0
47 HD 303311 SB* 10 44 37.4603321026 -59 32 55.459963798 8.30 9.042 8.979 9.58 9.09 O6V((f))z 74 0
48 CD-59 3300 * 10 44 41.7970027863 -59 46 56.403492769 8.07 8.79 8.57 9.33   O6V((f)) 128 0
49 HD 93250 * 10 44 45.0270200315 -59 33 54.681395850 6.73 8.12 7.50 8.38   O4III(fc) 291 0
50 CPD-59 2673 SB* 10 46 22.4669808446 -59 53 20.500567340 10.43 10.93 10.47 10.26   O5.5V(n)((f))z 33 0
51 HD 93843 Er* 10 48 37.7714362588 -60 13 25.516378731 6.37 7.29 7.33 8.23   O5III(fc) 154 0
52 MR 32 WR* 10 58 45.4669360494 -61 10 42.952053385   11.56 11.04 10.45   O5Ifp 27 0
53 HD 96715 * 11 07 32.8168866186 -59 57 48.703746695 7.51 8.32 8.28 9.04   O4V((f))z 103 0
54 * mu. Nor s*b 16 34 05.0202815 -44 02 43.128156 4.05 4.99 4.94 6.36   O9.7Iab 258 0
55 * zet Oph Be* 16 37 09.5390545 -10 34 01.529471 1.73 2.58 2.56 2.46 2.50 O9.2IVnn 1723 2
56 HD 328856 * 16 46 33.3560164436 -47 04 50.956313538 8.32 9.95 9.48 9.19 8.485 O9.7II 39 1
57 HD 151804 s*b 16 51 33.7215112148 -41 13 49.928887100 4.45 5.29 5.22     O8Iaf 350 0
58 HD 152233 SB* 16 54 03.5915443398 -41 47 29.834880322 5.93 6.72 6.59     O6II(f) 177 0
59 HD 152247 SB* 16 54 11.5170221125 -41 38 30.969538639 6.62 7.35 7.16 8.09   O9.2III 114 0
60 HD 152249 s*b 16 54 11.6391931444 -41 50 57.294733186 5.91 6.65 6.45     OC9Iab 217 0
61 HD 153426 * 17 01 13.0075706903 -38 12 11.888514524 6.79 7.61 7.47 8.49   O8.5III 87 0
62 HD 153919 HXB 17 03 56.7728262865 -37 50 38.912077679 6.06 6.78 6.51 6.08 5.90 O6Iafcp 756 1
63 HD 154368 s*b 17 06 28.3687923960 -35 27 03.759955171 6.10 6.63 6.13 7.12   O9.5Iab 263 0
64 HD 154643 * 17 08 13.9816706301 -35 00 15.670543148 6.76 7.42 7.20 8.23   O9.7III 46 1
65 HD 155806 Be* 17 15 19.2484405697 -33 32 54.307297319 4.61 5.52 5.53     O7.5V((f))z(e) 206 0
66 HD 155889 ** 17 15 50.7533188725 -33 44 13.256102872 5.68 6.54 6.55 7.60   O9.5IV 78 1
67 HD 156154 V* 17 17 27.0094090389 -35 32 12.005415836 8.19 8.64 8.04 8.94   O7.5Ib(f) 67 0
68 HD 319699 * 17 19 30.4179094473 -35 42 36.122491362 10.17 10.31 9.63 9.81 8.91 O5V((fc)) 56 0
69 HD 319718 ** 17 24 43.490 -34 11 57.03 12.28 11.94 10.44 10.05   O3.5If* 82 0
70 * 63 Oph * 17 54 54.0431493243 -24 53 13.544413171 5.35 6.24 6.20 7.33   O8II((f)) 165 0
71 HD 164492 ** 18 02 23.54916 -23 01 50.9468 6.49 7.49 6.80     O7.5Vz+A2Ia 193 0
72 * 9 Sgr Em* 18 03 52.4455370104 -24 21 38.639393923 5.08 5.97 5.97 5.72 5.70 O4V((f))z 516 0
73 * 15 Sgr s*b 18 15 12.9061049161 -20 43 41.787295583 4.64 5.42 5.37 5.27 5.19 O9.7Iab 232 0
74 * 16 Sgr SB* 18 15 12.9693179867 -20 23 16.689681401 5.25 6.05 6.02 5.94 5.86 O9.5III 177 0
75 BD-16 4826 * 18 21 02.2332559548 -16 01 01.005676001 10.28 10.61 9.98 9.95   O5.5V((f))z 40 0
76 HD 186980 * 19 46 15.9013986681 +32 06 58.160549378 6.72 7.56 7.48     O7.5III((f)) 111 0
77 HD 188209 s*b 19 51 59.0685711923 +47 01 38.420250587 4.61 5.55 5.63 5.54 5.64 O9.5Iab 288 0
78 * 9 Sge s*b 19 52 21.7651155105 +18 40 18.753390402 5.32 6.24 6.23     O7.5Iabf 275 1
79 HD 189957 * 20 01 00.0042530904 +42 00 30.818892996 6.93 7.84 7.82     O9.7III 92 0
80 HD 190864 Em* 20 05 39.8022905765 +35 36 27.989246210 7.18 7.93 7.78     O6.5III(f) 210 0
81 HD 191978 * 20 10 58.2801550674 +41 21 09.922990071 7.38 8.15 8.03     O8Vz 62 0
82 HD 192001 * 20 11 01.7067715756 +42 07 36.398544136 7.97 8.52 8.29     O9.5IV 45 0
83 V* V2011 Cyg SB* 20 12 33.1205906584 +40 16 05.442931142 7.32 7.85 7.55     O4.5V(n)((f)) 195 0
84 HD 192639 s*b 20 14 30.4275040181 +37 21 13.815126140 6.83 7.46 7.11     O7.5Iabf 268 0
85 HD 193322 ** 20 18 06.98820 +40 43 55.5001 5.17 5.94 5.84 5.69 5.68 O9IV(n)+B1.5V 265 0
86 HD 228841 Em* 20 18 29.6947589641 +38 52 39.772785669 9.08 9.50 9.01     O6.5Vn((f)) 55 0
87 HD 193443 ** 20 18 51.7093796362 +38 16 46.504188062 7.11 7.61 7.26     O9III 136 0
88 HD 193514 Em* 20 19 08.4971406843 +39 16 24.252177258 7.32 7.83 7.38     O7Ib(f) 179 0
89 HD 229196 Pu* 20 23 10.7833240392 +40 52 29.839468216 9.29 9.32 8.59     O6II(f) 110 0
90 HD 195592 s*b 20 30 34.9690436039 +44 18 54.858025184 7.75 7.95 7.08 6.29 5.60 O9.7Ia 197 1
91 HD 199579 SB* 20 56 34.7781372461 +44 55 29.000769871 5.16 6.01 5.96     O6.5V((f))z 338 0
92 HD 201345 * 21 07 55.4153633777 +33 23 49.226678368   7.611 7.764     ON9.2IV 159 0
93 HD 202124 s*b 21 12 28.3896915394 +44 31 54.125407798 7.33 7.94 7.76     O9Iab 89 0
94 * 68 Cyg SB* 21 18 27.1855667264 +43 56 45.388423736 4.05 4.99 5.00     O7.5IIIn((f)) 359 0
95 HD 206183 * 21 38 26.2840282278 +56 58 25.455651545 6.75 7.55 7.41     O9.5IV-V 86 0
96 HD 207198 * 21 44 53.2790298387 +62 27 38.042162728 5.61 6.25 5.94 5.66 5.49 O8.5II 321 0
97 HD 207538 * 21 47 39.7898466603 +59 42 01.344202478 7 7.55 7.30     O9.7IV 177 1
98 HD 207898 * 21 50 44.4315358978 +55 24 42.235582636 9.620 9.540 9.050     G 6 0
99 * 14 Cep SB* 22 02 04.5726568485 +58 00 01.308560227 4.77 5.551 5.542     O9IV(n)var+B1:V: 240 0
100 * 19 Cep * 22 05 08.7884887056 +62 16 47.323982519 4.36 5.19 5.11 4.95 4.92 O9Ib 362 0
101 HD 210809 s*b 22 11 38.6004905633 +52 25 47.950552363 6.7 7.61 7.56     O9Iab 194 0
102 * 10 Lac ** 22 39 15.6786372 +39 03 00.971152 3.650 4.670 4.880 4.98 5.19 O9V 718 0
103 HD 216532 V* 22 52 30.5564449825 +62 26 25.946675282 8.06 8.46 8.0     O8.5V(n) 130 0
104 HD 218195 ** 23 05 12.93161 +58 14 29.3496 7.91 8.62 8.44     O8.5III 67 0
105 HD 218915 s*b 23 11 06.9480376287 +53 03 29.651927910 6.32 7.22 7.20     O9.2Iab 184 1

    Equat.    Gal    SGal    Ecl

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2020.07.04-14:36:05

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