2003ApJ...598..349F

Query : 2003ApJ...598..349F

2003ApJ...598..349F - Astrophys. J., 598, 349-356 (2003/November-3)

Optical polarization observations of NGC 6231: evidence for a past supernova fingerprint.

FEINSTEIN C., MARTINEZ R., VERGNE M.M., BAUME G. and VAZQUEZ R.

Abstract (from CDS):

We present the first linear multicolor polarization observations for a sample of 35 stars in the direction of the Galactic cluster NGC 6231. We have found a complex pattern in the angles of the polarimetric vectors. Near the core of this cluster the structure shows a semicircular pattern that we have interpreted as a reorientation of the dust particles showing the morphology of the magnetic field. We propose that a supernova event occurred some time ago and produced a shock on the local ISM. We discuss in this paper independent confirmations of this event, both from the studies on the diffuse interstellar absorptions and the results of the pre-main-sequence stars. We also show that a supernova is supported by the evolutionary status of the cluster.

Abstract Copyright: ∼

Journal keyword(s): ISM: Dust, Extinction - Galaxy: Open Clusters and Associations: Individual: NGC Number: NGC 6231 - Polarization - ISM: Supernova Remnants

Simbad objects: 47

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Number of rows : 47
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NAME Lupus Complex SFR 16 03 -38.1           ~ 720 0
2 NGC 6167 OpC 16 34 38.9 -49 45 32   7.58 6.7     ~ 81 0
3 Ass Ara OB 1 As* 16 39.5 -46 46           ~ 93 0
4 NGC 6193 OpC 16 41 16.6 -48 46 37           ~ 158 0
5 NGC 6204 OpC 16 46 09 -47 01.6   8.51 8.2     ~ 129 0
6 NAME Sco OB 1 As* 16 53.5 -41 57           ~ 217 0
7 HD 326328 SB* 16 53 45.5874473424 -41 49 09.633232164 9.792 10.382 10.213   9.857 B3 39 0
8 HD 152200 SB* 16 53 51.6564464880 -41 50 32.716447224 7.744 8.488 8.391 9.31 8.152 O9.7IV(n) 68 0
9 NGC 6231 16 * 16 53 52.8576222216 -41 45 18.584778708 15.090 12.963 11.165   9.214 ~ 7 0
10 V* V945 Sco bC* 16 53 54.5203569984 -41 52 14.960561412 9.090 9.745 9.575 9.618 9.260 B1V 43 0
11 HD 152219 EB* 16 53 55.6078109256 -41 52 51.496403268 6.950 7.705 7.569   7.267 O9.5III(n) 108 0
12 HD 152235 s*b 16 53 58.8528412848 -41 59 39.577848180 6.47 6.92 6.38 5.84 5.42 B0.5Ia 192 0
13 CPD-41 7712 Y*? 16 54 00.3929167800 -41 52 43.523646564 8.607 9.298 9.158   8.838 B1V 32 0
14 V* V946 Sco bC* 16 54 01.7631666120 -41 51 11.868345252 9.890 10.471 10.281 10.327 9.927 B2IV-V 47 0
15 HD 152234 s*b 16 54 01.8373779952 -41 48 22.987396952 4.92 5.64 5.45     B0.5Ia 194 0
16 2MASS J16540315-4151492 Y*? 16 54 03.1543694544 -41 51 49.267424952 10.675 11.144 10.907 11.9 10.528 B2-3V 24 0
17 NGC 6231 1 Y*? 16 54 03.5029815552 -41 42 52.052270868 11.900 12.222 11.950   11.522 ~ 13 0
18 HD 152233 SB* 16 54 03.5909222280 -41 47 29.841281484 5.93 6.72 6.59     O6II(f) 194 0
19 NGC 6231 194 Y*O 16 54 03.8074799328 -41 45 48.399381972 11.365 11.722 11.459   11.055 B3.5V 14 0
20 CD-41 11030 SB* 16 54 05.0795262120 -41 50 06.929151792 8.924 9.575 9.457   9.201 B1V 46 0
21 CD-41 11027A Y*? 16 54 06.7182176904 -41 51 06.979097448 8.108 8.848 8.720   8.439 O9.7V 34 0
22 CD-41 11032 SB* 16 54 06.9496123464 -41 49 23.360333088 8.93 9.60 9.512 10.81 9.256 B0.5V 40 0
23 CD-41 11031 Y*? 16 54 07.5342145320 -41 44 40.655325588 9.443 10.051 9.887   9.566 B 22 0
24 HD 326340 Y*? 16 54 09.0228207192 -41 58 00.563537352 9.536 10.146 9.930 10.11 9.500 B5 30 0
25 CPD-41 7727 SB* 16 54 09.2737061088 -41 48 41.072216580 8.964 9.564 9.424   9.134 B1V 37 0
26 HD 152248 Y*O 16 54 10.0618206816 -41 49 30.139291596 5.56 6.15 6.088     O7Iabf+O7Ib(f) 260 0
27 NGC 6231 OpC 16 54 10.8 -41 48 43           ~ 538 0
28 CD-41 11034 Y*? 16 54 11.3119116264 -41 48 53.965557072 8.878 9.546 9.335 9.744 8.943 B1V 42 0
29 HD 152249 s*b 16 54 11.6395658856 -41 50 57.295111524 5.91 6.65 6.45     OC9Iab 239 0
30 CD-41 11037 SB* 16 54 13.2253067352 -41 50 32.518100184 7.21 8.08 7.90     O9IV 75 0
31 HD 326329 Y*O 16 54 14.1033282720 -41 50 08.503512720 8.141 9.183 9.013 9.477 8.460 O9.7V 73 0
32 CPD-41 7734 Y*? 16 54 14.2460503200 -41 55 01.326705420 10.103 10.616 10.331 10.25 9.801 B0Vn 28 0
33 NGC 6231 189 SB* 16 54 16.8013206864 -41 45 08.349698880 11.732 11.847 11.573   11.118 B8-9V 18 0
34 V* V964 Sco bC* 16 54 18.3200772432 -41 51 35.651104416 9.126 9.776 9.603 9.61 9.290 B0.5V 59 0
35 HD 326339 Y*? 16 54 19.3229318352 -41 57 30.961268928 10.136 10.501 10.108   9.505 B3 25 0
36 HD 152270 WR* 16 54 19.6991292072 -41 49 11.531710092 6.26 6.80 6.597 6.72 6.39 WC7+O5-8 303 0
37 CD-41 11042 Y*O 16 54 19.8364084848 -41 50 09.378605616 7.733 9.02 8.80 9.23 7.859 O9.5IV 102 0
38 V* V1208 Sco Y*O 16 54 21.3090092232 -41 51 41.766233904 9.293 9.91 9.708 9.96 9.344 B0-2V 47 0
39 NGC 6231 105 * 16 54 26.1959411784 -41 53 20.587796232 11.160 11.429 11.088   10.572 ~ 11 0
40 V* V1212 Sco dS* 16 54 31.2204545496 -41 55 28.604944992 10.728 10.401 9.945 9.86 9.347 F0III 27 0
41 HD 152314 Y*? 16 54 32.0048577720 -41 48 18.848961036 7.256 7.974 7.749 9.01 7.446 O9IV 108 0
42 V* V947 Sco bC* 16 54 36.0500878224 -41 53 38.119259292 9.45 10.06 9.78 10.06   B1V 52 0
43 WRAY 15-1560 Be* 16 54 37.4423306424 -41 47 07.186810056 11.905 12.100 11.771   11.227 Be 15 0
44 CPD-41 7755 Y*? 16 54 39.8785805856 -41 53 38.480359596 9.675 10.273 10.068 11.4 9.705 B1V 38 0
45 Cl Trumpler 27 OpC 17 36 20 -33 31.0   8.24 6.7     ~ 98 1
46 WR 101 WR* 17 45 09.0032919288 -31 50 15.863119584   17.9 14.60     WC8 35 1
47 IC 4678 GNe 18 08.0 -23 52   10.4       B3 7 0

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