2000A&AS..144..195O


C.D.S. - SIMBAD4 rel 1.7 - 2020.12.05CET16:22:00

2000A&AS..144..195O - Astron. Astrophys., Suppl. Ser., 144, 195-202 (2000/June-1)

Dust properties in NGC 6611.

ORSATTI A.M., VEGA E.I. and MARRACO H.G.

Abstract (from CDS):

An investigation on dust properties in the NW portion of NGC 6611 has been conducted polarimetrically to test the existence of abnormal extinction in that section of the open cluster in an independent way. As previously suggested for the η Carinae nebula by Tapia et al. (1988, in Conference on Dust in the Universe, Bailey M.E. and Williams D.A. (eds.) Cambridge University Press, Cambridge, p.19) and subsequently confirmed by Marraco et al. (1993AJ....105..258M), the canonical relation between EV–K/EB–V and λmax (the wavelength of maximun interstellar polarization) is not valid for stars belonging to dusty HII regions, as is the case for the observed portion of M 16. This may arise mainly from the presence of silicate grains of a slightly larger size than the standard ISM and also from a considerable increase in mean graphite grain size, according to previous results from Chini & Wargau (1990A&A...227..213C). About 50% of the observed stars in NGC 6611 present indications of intrinsic polarization in their measurements; a similar percentage was found in IC 2944 (Vega et al., 1994AJ....108.1834V), another young open cluster in close relation with an HII region.

Abstract Copyright:

Journal keyword(s): ISM: dust, extinction - Galaxy: open clusters and associations: individual: NGC 6611 - ISM: HII regions - ISM: magnetic fields

VizieR on-line data: <Available at CDS (J/A+AS/144/195): object.dat table1.dat table1.tex>

Simbad objects: 46

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Number of rows : 46

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 Cl Trumpler 14 OpC 10 43 56 -59 33.0   5.70 5.5     ~ 436 0
2 Cl Collinder 228 OpC 10 44 00 -60 05.2   4.58 4.4     ~ 191 0
3 NGC 3372 HII 10 44 19.0 -59 53 21           ~ 905 2
4 Cl Trumpler 15 OpC 10 44 43 -59 22.0   7.41 7.0     ~ 179 0
5 Cl Trumpler 16 OpC 10 45 10 -59 43.0   5.35 5.0     ~ 433 0
6 IC 2944 HII 11 38 20.00 -63 22 22.0           ~ 151 0
7 2MASS J18180928-1346545 Y*O 18 18 09.2844761854 -13 46 54.555135927 14.410 13.963 12.837   11.292 B0.5V 18 0
8 BD-13 4921 * 18 18 29.9553395208 -13 49 57.614738405 9.81 10.41 9.91     B0.5V 47 0
9 LS IV -13 14 Y*O 18 18 32.2228577379 -13 48 48.056921842 11.343 11.024 10.296 10.38 9.430 OB 44 0
10 BD-13 4923 Y*O 18 18 32.7311931259 -13 45 11.869241832 11.184 10.85 10.08 10.04 8.529 O4V((f+))+O7.5V 51 0
11 HD 168075 SB* 18 18 36.0420462726 -13 47 36.450104043 8.62 9.22 8.77 9.45   O7V(n)((f))z 133 0
12 HD 168076 ** 18 18 36.4221548165 -13 48 02.462547922 8.12 8.72 8.25 7.62 7.21 O4III(f) 182 0
13 NGC 6611 213 Em* 18 18 37.0565721042 -13 45 29.508027702 16.932 15.701 14.043   12.05 B 18 0
14 NGC 6611 223 * 18 18 37.8649107820 -13 46 35.152244595 11.44 11.80 11.06     B1V 30 0
15 2MASS J18183846-1345561 Y*O 18 18 38.4653963963 -13 45 56.221251553 13.875 12.34 11.78   11.406 B1V 26 0
16 EM* MWC 916 Ae* 18 18 38.8197267356 -13 46 44.272682403 12.209 11.990 11.127   9.598 Be 26 0
17 NGC 6611 245 Em* 18 18 40.0882611299 -13 47 00.854379079 15.334 14.431 13.512   12.225 A0 19 0
18 BD-13 4927 Y*O 18 18 40.0942827811 -13 45 18.605446597 10.12 10.14 9.48 9.71   O7II(f) 69 0
19 NGC 6611 251 Em* 18 18 40.3593963126 -13 46 18.082444634 14.484 14.066 13.259   12.184 B2Ve 19 0
20 LS IV -13 19 Y*O 18 18 40.7577738585 -13 46 52.033750439 10.84 11.27 11.00     B1V 38 0
21 2MASS J18184096-1345296 Y*O 18 18 40.9652227360 -13 45 29.645772336 12.01 11.85 11.05     B0.5V 25 0
22 NGC 6611 275 * 18 18 42.1891026578 -13 46 52.018212147 12.19 12.51 11.96     B1.5V 19 0
23 BD-13 4928 Be* 18 18 42.7761947209 -13 46 50.971213503 10.05 10.604 10.044 10.23 9.345 OB- 56 0
24 NGC 6611 297 Em* 18 18 44.5245946434 -13 45 48.121858979 13.34 13.55 12.85     B1.5:V 25 0
25 2MASS J18184465-1347563 Y*O 18 18 44.659 -13 47 56.33 12.589 12.350 11.718   10.947 B1.5V 25 0
26 NGC 6611 301 * 18 18 44.9817098254 -13 46 24.897570778 12.5 12.76 12.16     B2V 23 0
27 NGC 6611 306 Em* 18 18 45.0318300168 -13 45 41.023824157 13.23 13.35 12.72     B1.5Ve 25 0
28 NGC 6611 307 Em* 18 18 45.2536252940 -13 47 20.400859646 15.12 15.16 14.10     B1.5Ve 16 0
29 NGC 6611 311 Em* 18 18 45.60 -13 47 53.1 13.4 13.30 12.74     B2.5Ve 20 0
30 BD-13 4929 Y*O 18 18 45.8494579251 -13 46 30.890546461 10.05 10.509 10.23 10.02 8.830 O7V+B0.5V+B0.5V: 57 0
31 NGC 6611 313 * 18 18 46.1329444513 -13 49 23.438747806   12.11 11.60     B5III 20 0
32 M 16 OpC 18 18 48 -13 48.4   6.58 6.0     ~ 948 2
33 NGC 6611 343 * 18 18 49.3759070917 -13 46 50.044905432 12.4 12.65 11.83     B1V 22 0
34 NGC 6611 349 * 18 18 50.5732420732 -13 47 33.952339826   13.01 11.61     G5III 16 0
35 LS IV -13 22 Em* 18 18 50.6843369633 -13 48 12.721541645 11.953 11.78 11.16   10.443 B1V 30 0
36 2MASS J18185267-1349427 Y*O 18 18 52.6748769663 -13 49 42.635131189 9.04 9.71 9.45   8.968 O9.7IIIp 93 0
37 NGC 6611 371 Em* 18 18 53.0132902999 -13 46 45.082078635 14.577 14.067 13.379   12.388 B0.5Ve 23 0
38 NGC 6611 374 Em* 18 18 53.2682517230 -13 46 07.184502756 15.529 14.406 13.347   11.968 F 19 0
39 NGC 6611 388 Em* 18 18 54.9467919593 -13 48 45.844647852   14.28 13.70     B 14 0
40 2MASS J18185599-1344462 Y*? 18 18 55.9919884427 -13 44 46.369609989 15.858 13.525 11.632   9.857 ~ 12 0
41 TYC 5689-515-1 * 18 18 56.0607372784 -13 46 25.710124514   12.39 11.16     K0II 15 0
42 HD 168137 SB* 18 18 56.1894792010 -13 48 31.090538024 8.72 9.36 8.94 9.55   O8Vz 110 0
43 NGC 6611 411 * 18 18 56.97 -13 44 06.5   13.79 12.18     K0V 14 0
44 2MASS J18190042-1342410 Y*O 18 19 00.4285402787 -13 42 41.015173532 14.057 13.635 12.594   11.289 B1.5V 22 0
45 Cl* NGC 6611 ESL 49 Em* 18 19 02.8904669390 -13 47 17.652632778   12.65 12.05     A5II 16 0
46 BD-13 4936 Ae* 18 19 11.0683719117 -13 56 43.088195038 9.73 10.281 9.763 10.27 8.824 B0/5e 48 0

    Equat.    Gal    SGal    Ecl

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2020.12.05-16:22:00

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