2018A&A...613A..65H


Query : 2018A&A...613A..65H

2018A&A...613A..65H - Astronomy and Astrophysics, volume 613A, 65-65 (2018/5-1)

The IACOB project. V. Spectroscopic parameters of the O-type stars in the modern grid of standards for spectral classification.

HOLGADO G., SIMON-DIAZ S., BARBA R.H., PULS J., HERRERO A., CASTRO N., GARCIA M., MAIZ-APELLANIZ J., NEGUERUELA I. and SABIN-SANJULIAN C.

Abstract (from CDS):

Context. The IACOB and OWN surveys are two ambitious, complementary observational projects which have made available a large multi-epoch spectroscopic database of optical high resolution spectra of Galactic massive O-type stars. Aims. Our aim is to study the full sample of (more than 350) O stars surveyed by the IACOB and OWN projects. As a first step towards this aim, we have performed the quantitative spectroscopic analysis of a subsample of 128 stars included in the modern grid of O-type standards for spectral classification. The sample comprises stars with spectral types in the range O3-O9.7 and covers all luminosity classes. Methods. We used the semi-automatizedIACOB-BROAD andIACOB-GBAT/FASTWIND tools to determine the complete set of spectroscopic parameters that can be obtained from the optical spectrum of O-type stars. A quality flag was assigned to the outcome of theIACOB-GBAT/FASTWIND analysis for each star, based on a visual evaluation of how the synthetic spectrum of the best fittingFASTWIND model reproduces the observed spectrum. We also benefitted from the multi-epoch character of the IACOB and OWN surveys to perform a spectroscopic variability study of the complete sample, providing two different flags for each star accounting for spectroscopic binarity as well as variability of the main wind diagnostic lines. Results. We obtain - for the first time in a homogeneous and complete manner - the full set of spectroscopic parameters of the "anchors" of the spectral classification system in the O star domain. We provide a general overview of the stellar and wind parameters of this reference sample, as well as updated recipes for the SpT-Teff and SpT-log g calibrations for Galactic O-type stars. We also propose a distance-independent test for the wind-momentum luminosity relationship. We evaluate the reliability of our semi-automatized analysis strategy using a subsample of ∼40 stars extensively studied in the literature, and find a fairly good agreement between our derived effective temperatures and gravities and those obtained by means of more traditional "by-eye" techniques and different stellar atmosphere codes. The overall agreement between the synthetic spectra associated with theIACOB-GBAT/FASTWIND best fitting models and the observed spectra is good for most of the analyzed targets, but 46 stars out of the 128 present a particular behavior of the wind diagnostic lines that cannot be reproduced by our grid of spherically symmetric unclumped models. These are potential targets of interest for more detailed investigations of clumpy winds and/or the existence of additional circumstellar emitting components contaminating the wind diagnostic lines (e.g., disks, magnetospheres). Last, our spectroscopic variability study has led to the detection of clear or likely signatures of spectroscopic binarity in 27% of the stars and small amplitude radial velocity variations in the photospheric lines of another 30%. Additionally, 31% of the investigated stars show variability in the wind diagnostic lines.

Abstract Copyright: © ESO 2018

Journal keyword(s): stars: early-type - stars: fundamental parameters - techniques: spectroscopic - catalogs - Galaxy: general

VizieR on-line data: <Available at CDS (J/A+A/613/A65): tabled1.dat tabled2.dat>

Simbad objects: 134

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Number of rows : 134
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 HD 225146 s*b 00 03 57.5025246576 +61 06 13.094034012 8.32 8.96 8.60     O9.7Iab 83 0
2 HD 225160 s*b 00 04 03.7944653736 +62 13 19.009200864 7.74 8.46 8.19     O8Iabf 115 0
3 HD 10125 ** 01 40 52.7566053096 +64 10 23.114393760 7.88 8.52 8.28     O9.7II 73 0
4 HD 12323 SB* 02 02 30.1268458032 +55 37 26.372271540 7.95 8.87 8.92     ON9.2V 173 0
5 HD 12993 V* 02 09 02.4741997056 +57 55 55.948483236 8.38 9.13 8.98     O6.5V((f))Nstr 141 0
6 HD 14633 SB* 02 22 54.2923246536 +41 28 47.724359448 6.14 8.79 8.73 8.69   ON8.5V 215 0
7 HD 14947 s*b 02 26 46.9899705528 +58 52 33.118732380 7.83 8.44 7.98     O4.5If 245 0
8 HD 15570 Em* 02 32 49.4207394600 +61 22 42.089384892 8.40 8.80 8.11 7.41 6.86 O4If 295 0
9 HD 15629 Y*O 02 33 20.5873992264 +61 31 18.188762844 8.23 8.85 8.42     O4.5V((fc)) 230 0
10 HD 16691 Em* 02 42 52.0259349000 +56 54 16.463813796 10.187 9.07 8.70     O4If 148 0
11 HD 16832 * 02 44 12.7164018912 +56 39 27.243565128 10.285 9.21 8.87     O9.2III 38 0
12 HD 17603 * 02 51 47.7980420280 +57 02 54.469902552 8.68 9.10 8.45     O7.5Ib(f) 87 0
13 HD 24431 ** 03 55 38.4221692944 +52 38 28.747965948 6.50 7.11 6.74 6.36 6.10 O9III+B1.5V 156 0
14 * alf Cam s*b 04 54 03.0103983 +66 20 33.636467 3.47 4.34 4.29 4.18 4.18 O9Ia 647 1
15 V* AE Aur Or* 05 16 18.1493304816 +34 18 44.344404000 5.48 6.18 5.96     O9.5V 541 1
16 HD 34656 Em* 05 20 43.0812017952 +37 26 19.195066068 5.87 6.77 6.76     O7.5II(f) 196 0
17 HD 242926 Y*O 05 22 40.0955764848 +33 19 09.399870012 9.04 9.65 9.40     O7Vz 81 0
18 HD 35619 * 05 27 36.1458757248 +34 45 19.002906324 8.08 8.79 8.66     O7.5V((f))z 104 0
19 * ups Ori SB* 05 31 55.8601879 -07 18 05.537157 3.30 4.36 4.63 4.75 5.01 O9.7V 396 0
20 * del Ori SB* 05 32 00.40009 -00 17 56.7424 0.96 2.02 2.41 2.32 2.54 O9.5IINwk 758 0
21 * lam Ori A Em* 05 35 08.2760807112 +09 56 02.991326316 2.17 3.48 3.47     O8III((f)) 496 0
22 * tet01 Ori C SB* 05 35 16.4662967280 -05 23 22.921811880 4.20 5.15 5.13 4.91 4.73 O7Vp 1351 1
23 * mu. Col V* 05 45 59.8950238944 -32 18 23.162261796 3.84 4.90 5.18 5.30 5.57 O9.5V 472 0
24 HD 42088 * 06 09 39.5728368936 +20 29 15.450599580 6.73 7.58 7.57 8.45   O6V((f))z 237 0
25 HD 46149 SB* 06 31 52.5319291296 +05 01 59.178678024 7.03 7.80 7.61 7.54 7.36 O8.5V 265 0
26 HD 46150 Em* 06 31 55.5205071744 +04 56 34.296516096 6.03 6.86 6.73 6.50 6.41 O5V((f))z 382 0
27 HD 46223 Y*O 06 32 09.3068103600 +04 49 24.705695568 6.73 7.50 7.28 6.95 6.79 O4V((f)) 367 0
28 HD 46202 ** 06 32 10.4728 +04 57 59.818 7.60 8.36 8.19 7.98 7.86 O9.2V 269 0
29 HD 46966 ** 06 36 25.8880460976 +06 04 59.474397540 5.91 6.83 6.87     O8.5IV 197 0
30 HD 47432 Pu* 06 38 38.1872868432 +01 36 48.675208608 5.67 6.44 6.31 6.11 6.04 O9.7Ib 175 1
31 HD 54879 SB* 07 10 08.1487629504 -11 48 09.838940004 6.8 7.60 7.65     O9.7V 77 0
32 * tau CMa SB* 07 18 42.4864191 -24 57 15.741299 3.26 4.25 4.40 4.44 4.62 O9II 411 0
33 HD 57236 SB* 07 19 30.1024120872 -22 00 17.279067852 8.21 8.90 8.80 9.41   O8.5V 57 1
34 HD 64568 * 07 53 38.2051918848 -26 14 02.598056556 8.64 9.50 9.39 9.77 9.204 O3V((f*))z 103 0
35 HD 68450 * 08 11 01.6832319648 -37 17 32.549289720 5.58 6.42 6.44 7.43   O9.7II 130 0
36 CD-35 4384A ** 08 15 17.182 -35 44 14.85   10.15 9.75     ~ 2 0
37 HD 69464 Em* 08 15 48.5652200520 -35 37 52.863334428 8.47 9.11 8.80 9.42   O7Ib(f) 99 0
38 HD 71304 * 08 24 55.7882010048 -44 18 03.006513144 8.52 8.98 8.45 7.93 7.51 O9II 65 0
39 HD 75211 * 08 47 01.5921294816 -44 04 28.848481212 7.35 7.90 7.50 8.28   O8.5II((f)) 84 0
40 HD 76968 V* 08 57 28.8524478672 -50 44 58.197488784 6.53 7.33 7.21 7.01 6.87 O9.2Ib 84 1
41 CD-47 4551 s*b 08 57 54.6180604176 -47 44 15.708893424 9.11 9.41 8.54 8.92   O5Ifc 70 0
42 HD 298429 * 09 30 37.2571070208 -51 39 34.694474940 9.78 10.46 9.97 9.80   O8.5V 40 0
43 HD 91572 * 10 33 12.2657051544 -58 10 13.653979140 7.44 8.29 8.24 9.03   O6.5V((f))z 87 0
44 HD 91824 SB* 10 34 46.6322493936 -58 09 22.038466896 7.17 8.11 8.14 9.02   O7V((f))z 140 0
45 HD 93028 SB* 10 43 15.3393101352 -60 12 04.231982304 7.29 8.24 8.30 9.26   O9IV 157 0
46 HD 93027 Y*O 10 43 17.9451218184 -60 08 03.279537240 7.86 8.72 8.72 9.48   O9.5IV 74 0
47 HD 93128 SB* 10 43 54.3957741024 -59 32 57.497266716 8.82 8.97 8.77 9.40 8.71 O3.5V((fc))z 94 1
48 Cl Trumpler 14 9 * 10 43 55.3595921208 -59 32 48.868422180 9.282 10.102 9.902 9.31 9.45 O8.5V 12 0
49 HD 93129 ** 10 43 57.462360 -59 32 51.27000 6.26 7.840 7.884 7.839   O2If*+O3.5V((f)) 195 1
50 CD-59 3274 * 10 43 57.4814503080 -60 05 28.175041320 8.42 9.37 9.36 9.76   O9V 28 0
51 HD 93146 ** 10 44 00.13416 -60 05 08.7396           O6V+O9.5V 84 0
52 HD 93160 SB* 10 44 07.2603347496 -59 34 30.623536272 7.27 7.99 7.60 8.46   O7III((f)) 107 0
53 HD 93204 * 10 44 32.3390794992 -59 44 31.020804780 7.63 8.52 8.42 8.20 7.92 O5.5V((f)) 180 0
54 HD 93222 Y*O 10 44 36.2481200208 -60 05 28.890759120 7.26 8.18 8.10 8.91   O7V((f))z 189 0
55 HD 303311 SB* 10 44 37.4602634976 -59 32 55.460525100 8.30 9.042 8.979 9.58 9.09 O6V((f))z 78 0
56 CD-59 3300 * 10 44 41.7962304024 -59 46 56.405228916 8.07 8.79 8.57 9.33   O6V((f)) 134 0
57 HD 93249 PM* 10 44 43.8755766936 -59 21 25.141338252 7.75 8.78 8.20 9.20   O9III 88 0
58 HD 93250 * 10 44 45.0275085072 -59 33 54.680974848 6.73 8.12 7.50 8.38   O4III(fc) 302 0
59 HD 303308 ** 10 45 05.9147911152 -59 40 05.925360036 7.45 8.30 8.17 7.92 7.75 O4.5V((fc)) 288 0
60 HD 93843 Er* 10 48 37.7715351864 -60 13 25.518487656 6.37 7.29 7.33 8.23   O5III(fc) 165 0
61 HD 94024 Em* 10 50 01.5072417792 -57 52 26.267968992 8.03 9.15 9.45 9.41   O8IV 50 0
62 HD 303492 Em* 10 51 52.7493254280 -58 58 35.267527560 9.00 9.45 8.85 9.40   O8.5Iaf 56 0
63 HD 94963 Em* 10 56 35.7867321168 -61 42 32.287821516 6.35 7.17 7.26 8.10   O7II(f) 78 0
64 HD 96264 * 11 04 55.5014861880 -61 03 05.790816756 6.60 7.54 7.62 8.49   O9.5III 65 0
65 HD 96622 SB* 11 06 59.7814597392 -59 40 04.375135416 8.37 9.05 8.87 9.50   O9.2IV 60 0
66 HD 96715 * 11 07 32.8167251952 -59 57 48.704400540 7.51 8.32 8.28 9.04   O4V((f))z 109 0
67 HD 96946 * 11 08 51.7676582136 -60 45 33.909329916 7.93 8.69 8.55 9.24   O6.5III(f) 59 0
68 HD 97848 * 11 14 31.9027108872 -59 01 28.842530124 7.66 8.59 8.60 9.43   O8V 76 0
69 HD 101190 ** 11 38 09.9116823600 -63 11 48.614641440 6.58 7.37 7.33 8.48   O6IV((f)) 159 0
70 HD 101223 * 11 38 22.7710327032 -63 12 02.800069956 8.12 9.55 9.51 9.41   O8V 76 0
71 HD 104565 s*b 12 02 27.7963243920 -58 14 34.358968176 9 9.55 9.27 9.65   OC9.7Iab 44 0
72 HD 105056 s*b 12 05 49.8804411912 -69 34 22.996270632 6.57 9.07 8.74 8.45   ON9.7Iae 123 1
73 HD 114737 ** 13 13 45.5333080580 -63 35 11.718886112 7.43 8.19 8.00 8.92   O8.5III 56 0
74 HD 123008 s*b 14 07 30.6443226936 -64 28 08.781137868 8.58 10.00 9.50 9.44   ON9.2Iab 102 0
75 HD 125241 V* 14 20 22.7843645064 -60 53 22.245268236 8.60 9.08 8.60 8.95   O8.5Ib(f) 78 0
76 HD 135591 * 15 18 49.1432685384 -60 29 46.795963020 4.46 5.36 5.46 6.91   O8IV((f)) 151 0
77 * mu. Nor s*b 16 34 05.0202815 -44 02 43.128156 4.05 4.99 4.94 6.36   O9.7Iab 266 0
78 HD 151515 SB* 16 49 48.2512632192 -42 00 06.177451752 6.77 7.48 7.30 7.11 6.88 O7II(f) 119 0
79 HD 151804 s*b 16 51 33.7218052272 -41 13 49.919519496 4.45 5.29 5.22     O8Iaf 364 0
80 HD 152147 SB* 16 53 28.6179497064 -42 07 17.050155420 7.20 7.76 7.34 6.97 6.60 O9.7IbNwk 101 0
81 HD 152249 s*b 16 54 11.6395658856 -41 50 57.295111524 5.91 6.65 6.45     OC9Iab 227 0
82 CD-41 11037 SB* 16 54 13.2253067352 -41 50 32.518100184 7.21 8.08 7.90     O9IV 73 0
83 HD 152405 SB* 16 54 55.3693932960 -40 31 29.393197572 6.71 7.42 7.29 7.12 6.96 O9.7II 113 1
84 HD 152424 s*b 16 55 03.3294878112 -42 05 26.990821824 6.11 6.69 6.27 7.49   OC9.2Ia 190 0
85 V* V1297 Sco SB* 16 56 05.2157203176 -40 20 57.576260184 7.87 9.11 9.29 9.29   O7.5Vz 126 0
86 HD 152723 * 16 56 54.6694171728 -40 30 44.442698436 6.43 7.24 7.10 8.11 8.47 O6.5III(f) 147 0
87 HD 322417 * 16 58 55.3894193016 -40 14 33.377413884 10.65 10.90 10.22 10.02   O6.5IV((f)) 38 0
88 HD 154368 s*b 17 06 28.3687759224 -35 27 03.760593156 6.10 6.63 6.13 7.12   O9.5Iab 277 0
89 HD 154643 SB* 17 08 13.9817547216 -35 00 15.671611152 6.76 7.42 7.20 8.23   O9.7III 49 1
90 HD 154811 * 17 09 53.0865607752 -47 01 53.186262060 6.71 7.32 6.98 7.71   OC9.7Ib 81 0
91 HD 155889 ** 17 15 50.7533188725 -33 44 13.256102872 5.68 6.54 6.55 7.60   O9.5IV 80 1
92 HD 156154 V* 17 17 27.0092259048 -35 32 12.001357572 8.19 8.64 8.04 8.94   O7.5Ib(f) 71 0
93 Cl HM 1 6 * 17 19 06.0229903296 -38 46 45.008225868 13.53 13.18 11.64     O5.5Ifc 18 1
94 HD 319699 * 17 19 30.4178180256 -35 42 36.122104260 10.17 10.31 9.63 9.81 8.91 O5V((fc)) 61 0
95 HD 319702 Y*O 17 20 50.6128007664 -35 51 46.033836192 10.94 11.04 10.11 10.10   O8III 50 0
96 HD 156738 * 17 20 52.6582094016 -36 04 20.565752484 10.06 10.27 9.35 9.65   O6.5III(f) 69 0
97 Cl Pismis 24 17 Y*O 17 24 44.7309068928 -34 12 02.698328196 13.61 13.33 11.84 11.35 9.61 O3.5III(f*) 40 0
98 HD 157857 Em* 17 26 17.3317676808 -10 59 34.785507480 7.16 7.95 7.78     O6.5II(f) 163 0
99 * 63 Oph * 17 54 54.0432011904 -24 53 13.544140416 5.35 6.24 6.20 7.33   O8II((f)) 171 0
100 HD 163800 * 17 58 57.2584170624 -22 31 03.165347496 6.61 7.27 7.00 6.68 6.49 O7.5III((f)) 140 0
101 HD 163758 s*b 17 59 28.3669369416 -36 01 15.589420824 6.46 7.35 7.32 8.38   O6.5Iafp 150 0
102 HD 167633 * 18 16 49.6543599336 -16 31 04.308165588 7.69 9.16 9.07 8.91   O6.5V((f)) 71 1
103 BD-11 4586 * 18 18 03.3435555624 -11 17 38.830589016 10.26 10.33 9.52     O8Ib(f) 49 0
104 HD 168076 ** 18 18 36.4205083536 -13 48 02.420915796 8.12 8.72 8.25 7.62 7.21 O4III(f) 188 0
105 HD 168112 SB* 18 18 40.8671461608 -12 06 23.367244644 8.81 9.21 8.52 9.24   O5III(f) 140 0
106 HD 169582 s*b 18 25 43.1466928224 -09 45 11.033442216 8.74 9.24 8.70     O6Iaf 85 0
107 HD 171589 Em* 18 36 12.6382414200 -14 06 55.832938524 7.91 8.60 8.28 7.95 7.74 O7.5II(f) 77 0
108 HD 188209 s*b 19 51 59.0687638680 +47 01 38.419078944 4.61 5.55 5.63 5.54 5.64 O9.5Iab 299 0
109 * 9 Sge s*b 19 52 21.7649260368 +18 40 18.751320984 5.32 6.24 6.23     O7.5Iabf 283 1
110 HD 189957 * 20 01 00.0040048824 +42 00 30.822588756 6.93 7.84 7.82     O9.7III 95 0
111 HD 190429 ** 20 03 29.39885 +36 01 30.5082 5.98 6.78 6.63     O4If+O9.5II 200 0
112 HD 190864 Em* 20 05 39.8022808800 +35 36 27.991297908 7.18 7.93 7.78     O6.5III(f) 218 0
113 HD 191612 SB* 20 09 28.6105997664 +35 44 01.286453904 7.40 8.07 7.80     O8fpe 227 0
114 HD 191781 s*b 20 09 50.5814420544 +45 24 10.486830312 10.1 10.06 9.53     ON9.7Iab 62 0
115 HD 191978 * 20 10 58.2799378920 +41 21 09.926824572 7.38 8.15 8.03     O8Vz 65 0
116 HD 192001 * 20 11 01.7066647560 +42 07 36.402475404 7.97 8.52 8.29     O9.5IV 49 0
117 HD 192639 s*b 20 14 30.4275801672 +37 21 13.816276704 6.83 7.46 7.11     O7.5Iabf 279 0
118 HD 193443 SB* 20 18 51.7093796362 +38 16 46.504188062 7.11 7.59 7.26     O8.5III:((f))+O9.2:IV: 139 0
119 HD 193514 Em* 20 19 08.4971150880 +39 16 24.253036608 7.32 7.83 7.38     O7Ib(f) 182 0
120 HD 229196 Pu* 20 23 10.7840350992 +40 52 29.847533160 9.29 9.32 8.59     O6II(f) 114 0
121 HD 195592 s*b 20 30 34.9690901208 +44 18 54.859533372 7.75 7.95 7.08 6.29 5.60 O9.7Ia 202 1
122 BD+40 4219 * 20 32 13.8219154968 +41 27 12.006516060 11.50 11.40 10.22     O7III((f)) 107 0
123 Schulte 9 s*b 20 33 10.7362926720 +41 15 08.222370372 13.38 12.77 10.96     O4.5If 216 0
124 Schulte 7 * 20 33 14.1095938872 +41 20 21.904113804 12.24 12.00 10.55     O3If* 138 0
125 BD+41 3807 SB* 20 34 08.5147948176 +41 36 59.408503092 11.74 11.52 10.03     O5.5Ifc 120 0
126 HD 202124 s*b 21 12 28.3896178416 +44 31 54.129118980 7.33 7.94 7.76     O9Iab 92 0
127 HD 207198 * 21 44 53.2791389640 +62 27 38.048647248 5.61 6.25 5.94 5.66 5.49 O8.5II 332 0
128 HD 207538 * 21 47 39.7896725544 +59 42 01.348647696 7 7.55 7.30     O9.7IV 185 1
129 * 19 Cep * 22 05 08.7897533088 +62 16 47.332569936 4.36 5.19 5.11 4.95 4.92 O9Ib 369 0
130 HD 210809 s*b 22 11 38.6004719208 +52 25 47.950615308 6.7 7.61 7.56     O9Iab 203 0
131 * 10 Lac ** 22 39 15.6786372 +39 03 00.971152 3.650 4.670 4.880 4.98 5.19 O9V 737 0
132 HD 216898 * 22 55 42.4584233736 +62 18 22.821300252 8.10 8.58 8.04     O9V 145 0
133 HD 218195 ** 23 05 12.93161 +58 14 29.3496 7.91     8.811   O8.5III 72 0
134 HD 218915 s*b 23 11 06.9483955128 +53 03 29.652921252 6.32 7.22 7.20     O9.2Iab 189 1

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2022.08.15-14:24:33

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