2010A&A...513A..75O


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.14CEST22:43:04

2010A&A...513A..75O - Astronomy and Astrophysics, volume 513, A75-75 (2010/4-1)

Polarimetry of an intermediate-age open cluster: NGC 5617.

ORSATTI A.M., FEINSTEIN C., VERGNE M.M., MARTINEZ R.E. and VEGA E.I.

Abstract (from CDS):

We present polarimetric observations in the UBVRI bands of 72 stars located in the direction of the medium age open cluster NGC 5617. Our intention is to use polarimetry as a tool in membership identification, by building on previous investigations intended mainly to determine the cluster's general characteristics rather than provide membership suitable for studies such as stellar content and metallicity, as well as study the characteristics of the dust lying between the Sun and the cluster. The obsevations were carried out using the five-channel photopolarimeter of the Torino Astronomical Observatory attached to the 2.15m telescope at the Complejo Astronomico El Leoncito (CASLEO; Argentina). We are able to add 32 stars to the list of members of NGC 5617, and review the situation for others listed in the literature. In particular, we find that five blue straggler stars in the region of the cluster are located behind the same dust as the member stars are and we confirm the membership of two red giants. The proposed polarimetric memberships are compared with those derived by photometric and kinematical methods, with excellent results. Among the observed stars, we identify 10 with intrinsic polarization in their light. NGC 5617 can be polarimetrically characterized with Pmax=4.40 % and θv=73.1°. The spread in polarization values for the stars observed in the direction of the cluster seems to be caused by the uneven distribution of dust in front of the cluster's face. Finally, we find that in the direction of the cluster, the interstellar medium is apparently free of dust, from the Sun's position up to the Carina-Sagittarius arm, where NGC 5617 seems to be located at its farthest border.

Abstract Copyright:

Journal keyword(s): dust, extinction - open clusters and associations: individual: NGC 5617

VizieR on-line data: <Available at CDS (J/A+A/513/A75): table1.dat>

Simbad objects: 81

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Number of rows : 81

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 Cl Stock 16 OpC 13 19 29 -62 38.0   9.64 9.1     ~ 84 0
2 NGC 5617 36 * 14 28 58.89 -60 43 49.6   12.19 11.75     ~ 3 0
3 NGC 5617 58 * 14 29 06.2387273242 -60 45 07.543504642   12.39 12.10     ~ 3 0
4 V* V1006 Cen LP* 14 29 06.3734793219 -60 38 47.258269747   10.53 8.89     M3 18 0
5 Cl* NGC 5617 LIND 98 Em* 14 29 10.37 -60 41 36.2   13.57 12.91     ~ 2 0
6 NGC 5617 69 * 14 29 13.45 -60 45 21.0   14.63 13.79     ~ 2 0
7 NGC 5617 68 * 14 29 13.7596834304 -60 40 01.869930049   12.10 11.60     ~ 5 0
8 NGC 5617 80 * 14 29 18.48 -60 47 51.0   15.07 14.17     ~ 2 0
9 NGC 5617 79 * 14 29 18.6485482462 -60 41 28.228335083   14.46 13.96     ~ 3 0
10 NGC 5617 93 * 14 29 23.6141862440 -60 45 17.834004057   13.77 13.31     ~ 3 0
11 NGC 5617 94 * 14 29 23.9718650870 -60 41 49.916897669   13.54 13.18     ~ 4 0
12 NGC 5617 100 * 14 29 25.0583765098 -60 40 05.747087142   12.20 11.51     ~ 4 0
13 NGC 5617 106 * 14 29 25.93 -60 46 08.9   15.31 13.84     ~ 2 0
14 NGC 5617 107 * 14 29 26.9704237199 -60 39 49.838391000   12.99 11.290     ~ 4 0
15 NGC 5617 116 * 14 29 28.7392431598 -60 42 18.731154563   12.42 10.67     ~ 8 0
16 NGC 5617 136 * 14 29 32.6229725319 -60 46 33.297194298   14.35 13.04     ~ 3 0
17 CD-60 5218 * 14 29 33.2414427922 -60 47 28.033384971 9.67 9.92 9.82     B5III: 12 0
18 NGC 5617 139 * 14 29 33.73 -60 43 48.5   13.88 13.43     ~ 2 0
19 NGC 5617 143 * 14 29 35.1943452389 -60 38 55.888976477   13.93 13.50     ~ 4 0
20 NGC 5617 146 * 14 29 35.8235548780 -60 40 37.363144366   12.76 12.32     ~ 3 0
21 NGC 5617 149 * 14 29 36.00 -60 46 19.4   13.01 12.31     ~ 2 0
22 NGC 5617 154 * 14 29 37.1350734146 -60 39 15.588779225   13.67 13.08     ~ 3 0
23 NGC 5617 169 * 14 29 40.02 -60 38 52.4   13.01 12.57     ~ 2 0
24 NGC 5617 175 * 14 29 40.9371162427 -60 40 56.651556579   13.34 12.94     ~ 3 0
25 NGC 5617 176 * 14 29 41.1934447396 -60 36 58.329960147   12.80 11.86     ~ 3 0
26 CPD-60 5385 Em* 14 29 42.5361872882 -60 45 17.133778518   11.73 11.39     ~ 8 0
27 NGC 5617 180 * 14 29 42.6038730678 -60 39 31.385577594   12.42 11.90     ~ 5 0
28 NGC 5617 184 * 14 29 42.8141374547 -60 46 19.701433565   13.16 12.81     ~ 4 0
29 CD-60 5219 * 14 29 43.1099921639 -60 43 57.268827291 10.01 10.51 10.18 10.33   B2III 17 0
30 NGC 5617 186 * 14 29 43.5723062893 -60 37 15.813591041   13.76 13.22     ~ 3 0
31 NGC 5617 188 * 14 29 43.6156689213 -60 44 59.481001319   12.56 12.15     ~ 3 0
32 NGC 5617 OpC 14 29 44 -60 42.7   7.00 6.3     ~ 80 0
33 NGC 5617 187 * 14 29 44 -60 42.7   12.49 12.08     ~ 2 0
34 NGC 5617 190 * 14 29 44.1369084643 -60 41 09.222665162   13.81 13.39     ~ 3 0
35 NGC 5617 195 * 14 29 44.6603756622 -60 42 52.358741219   11.25 10.90     ~ 4 0
36 NGC 5617 196 * 14 29 44.86 -60 39 56.6   13.12 12.67     ~ 2 0
37 LS 3253 * 14 29 45.4764275904 -60 44 35.396582276 10.35 10.67 10.26 10.37 9.69 OB 12 0
38 NGC 5617 203 * 14 29 45.90 -60 40 19.1   12.78 12.42     ~ 2 0
39 NGC 5617 205 * 14 29 46.1424184832 -60 42 58.010919294   13.17 12.74     ~ 4 0
40 NGC 5617 207 * 14 29 46.71 -60 43 08.0   13.50 13.03     ~ 3 0
41 NGC 5617 174 * 14 29.8 -60 43           ~ 1 0
42 NGC 5617 379 * 14 29.8 -60 43           ~ 1 0
43 NGC 5617 215 * 14 29 48.3481416856 -60 45 57.464906595   13.55 11.71 11.17 9.31 ~ 3 0
44 NGC 5617 216 * 14 29 48.5201905058 -60 42 58.182713541   11.26 10.96     ~ 6 0
45 NGC 5617 214 * 14 29 48.7258047242 -60 38 37.607259623   12.44 12.10     ~ 4 0
46 NGC 5617 221 * 14 29 49.1584971392 -60 40 14.923376234   11.99 11.37     ~ 4 0
47 NGC 5617 225 * 14 29 49.9512518171 -60 44 37.098625163   13.65 13.25     ~ 5 0
48 NGC 5617 226 * 14 29 50.0210 -60 43 41.357   12.46 12.05     ~ 3 0
49 NGC 5617 227 * 14 29 50.1926089019 -60 41 12.189533404   12.06 10.42     ~ 7 0
50 NGC 5617 238 * 14 29 51.72 -60 40 20.7   14.005 13.65     ~ 2 0
51 NGC 5617 244 * 14 29 53.1481006584 -60 43 03.969589973   13.84 13.39     ~ 3 0
52 NGC 5617 255 * 14 29 55.55 -60 44 22.6   13.94 13.24     ~ 2 0
53 CPD-60 5394 * 14 29 56.2764775167 -60 44 35.088867544   11.24 10.53 10.45 9.52 OB: 8 0
54 NGC 5617 259 * 14 29 56.56 -60 37 37.6   14.91 13.72     ~ 2 0
55 NGC 5617 260 * 14 29 57.58 -60 37 30.8   13.95 12.60     ~ 2 0
56 CPD-60 5397 * 14 29 57.6122397018 -60 41 30.470480996 11.05 11.4 11.4     ~ 9 0
57 WRAY 15-1212 Em* 14 30 01.0702888621 -60 45 58.280242971   12.01 11.65     ~ 7 0
58 NGC 5617 269 * 14 30 01.09 -60 37 46.0   14.31 12.73     ~ 2 0
59 NGC 5617 274 * 14 30 01.7280590140 -60 40 53.221040217   14.02 13.60     ~ 3 0
60 NGC 5617 275 * 14 30 01.9857477793 -60 40 26.592530481   14.51 13.96     ~ 3 0
61 NGC 5617 276 * 14 30 02.40 -60 43 29.0   12.84 12.44     ~ 2 0
62 NGC 5617 292 * 14 30 08.45 -60 40 48.4   13.24 12.80     ~ 2 0
63 NGC 5617 294 * 14 30 08.8005283261 -60 40 59.019294340   13.73 13.31     ~ 3 0
64 NGC 5617 295 * 14 30 09.18 -60 38 49.5   15.44 13.79     ~ 2 0
65 NGC 5617 302 * 14 30 11.0880199302 -60 38 50.457805340   13.79 13.29     ~ 3 0
66 NGC 5617 321 * 14 30 15.86 -60 45 57.2   14.43 13.16     ~ 2 0
67 NGC 5617 327 * 14 30 17.97 -60 46 28.6   14.32 13.09     ~ 2 0
68 NGC 5617 330 * 14 30 19.7386752051 -60 45 09.154019346   11.75 11.16     ~ 4 0
69 NGC 5617 331 * 14 30 20.38 -60 39 00.8   14.50 12.80     ~ 2 0
70 NGC 5617 334 * 14 30 21.1291806504 -60 44 20.663864221   12.99 12.48     ~ 3 0
71 NGC 5617 333 * 14 30 21.13 -60 41 24.4   14.58 14.04     ~ 2 0
72 NGC 5617 336 * 14 30 21.26 -60 45 31.5   14.49 13.95     ~ 2 0
73 NGC 5617 339 * 14 30 23.0311623981 -60 40 00.761709271   11.94 11.68     ~ 3 0
74 NGC 5617 342 * 14 30 23.1600250073 -60 40 45.351301082   12.85 11.13     ~ 5 0
75 CPD-60 5401 * 14 30 27.3459662740 -60 39 48.586964135   11.452 10.127     ~ 6 0
76 NAME Car-Sgr Arm PoG 15 00 -40.0           ~ 427 1
77 NGC 6167 OpC 16 34 34 -49 46.3   7.58 6.7     ~ 68 0
78 NGC 6193 OpC 16 41 20 -48 45.8           ~ 132 0
79 NGC 6204 OpC 16 46 08 -47 01.2   8.51 8.2     ~ 109 0
80 Cl Hogg 22 OpC 16 46 37 -47 05.0           ~ 62 0
81 Cl Trumpler 27 OpC 17 36 20 -33 31.0   8.24 6.7     ~ 90 1

    Equat.    Gal    SGal    Ecl

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2020.07.14-22:43:04

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