2008MNRAS.390..665L

Query : 2008MNRAS.390..665L

2008MNRAS.390..665L - Mon. Not. R. Astron. Soc., 390, 665-674 (2008/October-3)

A spectroscopic study of the blue stragglers in M67.

LIU G.Q., DENG L., CHAVEZ M., BERTONE E., DAVO A.H. and MATA-CHAVEZ M.D.

Abstract (from CDS):

Based on spectrophotometric observations from the Guillermo Haro Observatory (Cananea, Mexico), a study of the spectral properties of the complete sample of 24 blue straggler stars (BSs) in the old Galactic open cluster M67 (NGC 2682) is presented. All spectra, calibrated using spectral standards, were recalibrated by means of photometric magnitudes in the Beijing-Arizona-Taipei-Connecticut system, which includes fluxes in 11 bands covering ∼3500-10000 Å. The set of parameters was obtained using two complementary approaches that rely on a comparison of the spectra with (i) an empirical sample of stars with well-established spectral types and (ii) a theoretical grid of optical spectra computed at both low and high resolution. The overall results indicate that the BSs in M67 span a wide range in Teff(∼ 5600 -12600 K) and surface gravities that are fully compatible with those expected for main-sequence objects (log g = 3.5 -5.0 dex).

Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): blue stragglers - Hertzsprung-Russell (HR) diagram - open clusters and associations: individual: M67

Simbad objects: 79

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Number of rows : 79
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 25621 PM* 04 04 09.8751899184 +02 49 37.019733024   5.86   5.0   F6V 145 0
2 * del03 Tau a2* 04 25 29.3847186643 +17 55 40.463442784   4.369 4.298 6.18 4.24 A2IV-Vs 429 0
3 HD 28271 SB* 04 28 51.9945026972 +30 21 41.580029004   6.898 6.383     F7V 73 0
4 HD 28978 * 04 34 08.2675220880 +05 34 07.035585024   5.729 5.678     A2IV 107 0
5 * pi.01 Ori PM* 04 54 53.7280989194 +10 09 03.003446941   4.723 4.648     A0Va_lB 268 0
6 * 9 Aur gD* 05 06 40.6306032888 +51 35 51.798998724       4.8   F2V 201 0
7 * 68 Eri PM* 05 08 43.6987121400 -04 27 22.349830176   5.546 5.119     F5.5VkF4mF2 245 0
8 HD 33608 PM* 05 11 19.1763275184 -02 29 26.816850132   6.346 5.892     F5V 144 0
9 * 14 Aur dS* 05 15 24.3941965368 +32 41 15.359679780   5.217 5.000 6.45   A8III 208 0
10 * 19 Aur V* 05 20 00.9210992208 +33 57 28.994858280 5.72 5.30 5.03     A5II+ 113 0
11 * bet Tau PM* 05 26 17.51312 +28 36 26.8262 1.03 1.52 1.65 1.66 1.76 B7III 380 2
12 HD 35984 TT* 05 29 40.6538211528 +29 11 11.270459112   6.647 6.190     F6III 80 0
13 * 134 Tau * 05 49 32.9303335271 +12 39 04.760685507 4.68 4.811 4.875     B9V 208 0
14 * k Ori PM* 06 16 26.6191067712 +12 16 19.787639592   5.46   4.8   F5V 153 0
15 HD 61295 PM* 07 39 54.0948913920 +32 00 35.034156612   6.523 6.165     F5III 62 0
16 BD+75 325 HS* 08 10 49.4903003712 +74 57 57.931973676 8.002 9.23 9.50 9.698 9.884 sdO5 267 0
17 Cl* NGC 2682 SAND 145 * 08 48 59.8390343760 +11 44 51.354002508   13.37 12.927     F2V 13 0
18 Cl* NGC 2682 SAND 277 SB* 08 49 21.4793358624 +12 04 22.972635696   12.718 12.198 12.082   F6V 22 0
19 NGC 2682 16 BS? 08 50 47.6624732228 +11 44 51.454924690 13.159 13.18 12.671   12.073 F7IV 41 0
20 NGC 2682 30 * 08 50 55.6925064870 +11 52 14.690654736   12.64 11.954   11.369 F9IV 55 0
21 NGC 2682 55 BS* 08 51 03.5144925000 +11 45 02.822542776   11.61 11.295   10.941 B9V 77 0
22 NGC 2682 81 BS* 08 51 11.7789373696 +11 45 22.123673277   9.96 10.024     B8V 114 0
23 NGC 2682 90 BS* 08 51 14.3529693120 +11 45 00.540874080   11.43 10.819   10.544 ~ 51 0
24 NGC 2682 95 SB* 08 51 15.4464408600 +11 47 31.475192784 13.211 13.17 12.680 12.355 12.044 F2 46 0
25 NGC 2682 124 BS* 08 51 19.9070240880 +11 47 00.441178944 12.576 12.59 12.117 11.848 11.564 F5IV 90 0
26 NGC 2682 130 BS* 08 51 20.5734927984 +11 46 16.412199564 13.346 13.34 12.950   12.30 G: 69 0
27 NGC 2682 131 SB* 08 51 20.794032 +11 53 26.13120   11.647 11.248 11.042 10.722 F5IV 128 0
28 NGC 2682 134 V* 08 51 21.2238774840 +11 45 52.751052612 12.903 12.83 12.315 11.904 11.553 F5 78 0
29 NGC 2682 136 SB* 08 51 21.7535381400 +11 52 37.872333372   11.92 11.235   10.595 F8V 84 0
30 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
31 NGC 2682 153 BS* 08 51 26.4321697248 +11 43 50.738037528   11.41 11.269   11.101 A2V 95 0
32 NGC 2682 156 BS* 08 51 27.0120114864 +11 51 52.582244112   11.1 10.940   10.862 A2V 81 0
33 Cl* NGC 2682 SAND 1036 EB* 08 51 28.1469477144 +11 49 27.495860592 13.262 13.27 12.809   12.184 F3 84 0
34 Cl* NGC 2682 SAND 2226 BS* 08 51 28.3616175912 +12 07 38.612638524   12.55 12.718     F2V 25 0
35 Cl* NGC 2682 SAND 1280 dS* 08 51 32.5773312840 +11 50 40.634470500 12.537 12.52 12.269 12.121 11.922 F0 67 0
36 NGC 2682 185 BS* 08 51 32.5946133024 +11 48 52.103681712   11.46 11.48   10.80 A0V 75 0
37 Cl* NGC 2682 SAND 1284 BS* 08 51 34.3150275672 +11 51 10.497400452   11.17 10.92   10.622 B9V 106 0
38 NGC 2682 207 BS* 08 51 37.6915341325 +11 37 03.761045440 12.629 12.91 12.344   11.777 F2V 40 0
39 NGC 2682 210 * 08 51 39.2311504440 +11 50 03.851908944 12.866 12.79 12.277   11.566 F8V 51 0
40 NGC 2682 238 BS* 08 51 48.6395454552 +11 49 15.654839376   11.23 10.913     A1V 55 0
41 BD+12 1930 BS* 08 52 10.7435074328 +11 44 05.867673842   10.81 10.700     A1V 71 0
42 HD 76292 PM* 08 56 30.5155379784 +40 12 05.303194920 6.310 6.240 5.880     F3III 73 0
43 * phi UMa ** 09 52 06.35437 +54 03 51.5962   4.602 4.557     A3IV 160 0
44 HD 87822 ** 10 08 15.88717 +31 36 14.5875   6.675 6.230     F4V 125 0
45 * 35 LMi * 10 36 21.4209550272 +36 19 36.940070136   6.705 6.287     F3V 111 0
46 Feige 34 HS* 10 39 36.7358839104 +43 06 09.212615280 9.613 10.91 11.14 11.319 11.464 sdOp 731 0
47 HD 94028 PM* 10 51 28.1256073369 +20 16 38.965439278 8.51 8.69 8.22 7.82 7.54 F8 375 0
48 * bet UMa PM* 11 01 50.4797515135 +56 22 56.761138187 2.35 2.35 2.37 2.31 2.35 A1IVps 462 0
49 * tet Leo PM* 11 14 14.4056705348 +15 25 46.455911128 3.40 3.33 3.35 3.32 3.34 A2IV 353 0
50 * iot Leo SB* 11 23 55.4532319011 +10 31 46.222507078   4.41 4.01     F1IV 289 0
51 * 81 Leo PM* 11 25 36.3727820736 +16 27 23.532637608   5.939 5.572 10.0   F2V 83 0
52 * 89 Leo PM* 11 34 21.9489030480 +03 03 36.593787600   6.23   5.5   F5.5V 173 0
53 * 62 UMa SB* 11 41 34.2564094520 +31 44 45.775062146 6.08 6.16 5.75 5.37 5.09 F5 122 0
54 HD 102574 PM* 11 48 23.4874826184 -10 18 47.176192764   6.812 6.226     G0V 95 0
55 BD+18 2647 HS* 12 41 51.7899961800 +17 31 19.750566756 10.261 11.70 11.63 11.969 12.159 sdOpec 185 1
56 * rho Vir dS* 12 41 53.0569475088 +10 14 08.252569320 5.00 4.97 4.88 4.80 4.78 A0Va_lB 232 0
57 HD 117361 PM* 13 28 45.8310369648 +50 43 06.864242700   6.807 6.417     F0IV 54 0
58 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2593 0
59 * tau Boo PM* 13 47 15.7381720026 +17 27 24.809555600 5.02 4.98 4.49 4.09 3.85 F7IV-V 1049 1
60 * tet Boo PM* 14 25 11.7969501601 +51 51 02.677224089 4.57 4.56 4.05 3.64 3.39 F7V 397 0
61 * sig Boo PM* 14 34 40.8173867232 +29 44 42.457673940 4.76 4.84 4.47 4.13 3.94 F4VkF2mF1 632 0
62 * h Boo PM* 14 49 18.6703382808 +46 06 58.334410512   6.223 5.757     F6IVs 85 0
63 HD 132375 PM* 14 58 52.7816996822 -04 59 21.311934645   6.57 6.08 6.93   F7V 91 0
64 * c Boo PM* 15 07 18.0659348352 +24 52 09.099406380 5.34 5.36 4.93 4.53 4.32 F5V 374 0
65 HD 136064 PM* 15 14 38.3389842926 +67 20 48.198556893   5.66   4.8   F8V 187 0
66 * eps Lib SB* 15 24 11.8837924176 -10 19 20.203874400   5.358 4.920     F4V 156 0
67 HD 139457 PM* 15 37 59.2141510302 +10 14 23.558789926 7.580 7.620   6.8   F6 104 0
68 HD 142357 * 15 53 34.8696799896 +16 04 29.761652748 6.660 6.630 6.220     F5.5IV+ 62 0
69 * gam Ser PM* 15 56 27.1826577018 +15 39 41.809580382 4.31 4.34 3.84 3.37 3.13 F6V 586 0
70 * tet Dra SB* 16 01 53.3449795946 +58 33 54.901935955 4.630 4.520 4.000 3.56 3.31 F9V 304 0
71 * ups Her PM* 16 02 47.8978183032 +46 02 12.133917132 4.33 4.616 4.709     B9.5III 248 0
72 HD 145976 ** 16 12 45.47092 +26 40 14.0947           F3V 58 0
73 HD 150012 PM* 16 37 48.0102377160 +13 41 13.317934056 6.750 6.740 6.320     F5IV-V 92 0
74 HD 155646 PM* 17 12 54.3442639392 +00 21 07.306238592   7.137 6.643     F6V 116 0
75 HD 157373 PM* 17 20 33.7543461984 +48 11 19.609735200   6.86   6.1   F4V 100 0
76 HD 157856 PM* 17 25 57.8754299448 -01 39 06.407459892   6.872 6.440     F5V 108 0
77 HD 159332 PM* 17 33 22.8242819328 +19 15 24.040331928   6.130 5.648     F4V 150 0
78 HD 161149 * 17 43 22.0226907336 +14 17 42.610199172   6.643 6.211     F5III 78 0
79 * del Sct dS* 18 42 16.4268984096 -09 03 09.188922060   5.04 4.71     F2II-III 507 0

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