1999A&A...349..448S

Query : 1999A&A...349..448S

1999A&A...349..448S - Astronomy and Astrophysics, volume 349, 448-456 (1999/9-2)

Photometric and kinematic studies of open star clusters. I. NGC 581 (M 103).

SANNER J., GEFFERT M., BRUNZENDORF J. and SCHMOLL J.

Abstract (from CDS):

We present CCD photometry and a proper motion study of the young open star cluster, NGC 581 (M 103). Fitting isochrones to the colour magnitude diagram, we found an age of 16±4Myr and a distance of roughly 3kpc for this cluster. The proper motion study identifies 77 stars of V=14.5mag or brighter to be cluster members. We combine membership determination by proper motions and statistical field star subtraction to derive the IMF of the cluster and find a quite steep slope of Γ=-1.80.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: open clusters and associations: individual: NGC 581 (M 103) - astrometry - stars: kinematics - stars: Hertzsprung-Russel (HR) and C-M diagrams - stars: luminosity function, mass function

VizieR on-line data: <Available at CDS (J/A+A/349/448): table4.dat table7.dat>

Nomenclature: Tables 4, 7: Cl* NGC 581 SGB NNNNN N=2387+2134 among (Nos 1-2132, 10031-18746).

CDS comments: Fig.1: Stars A, B, C = Cl* NGC 581 PUR A, B, C.

Simbad objects: 34

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Number of rows : 34
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 HD 236740 * 01 27 26.3173757184 +60 17 04.129690668 8 8.28 7.91     B2Ib 39 0
2 HD 8769 * 01 28 01.2043622736 +61 19 29.969045364   9.38 9.30     B9V 16 0
3 HD 8906 * 01 29 15.3063398976 +60 02 08.409022548 8.54 7.826 7.118     F5Ib 46 0
4 HD 8965 * 01 29 51.3628398288 +60 15 04.563255708 6.48 7.274 7.291     B0.5V 48 0
5 Cl* NGC 581 SGB 13894 * 01 32 46.4183980344 +60 46 26.563825164   13.75 11.74 11.15   ~ 1 0
6 Cl* NGC 581 SGB 13899 * 01 32 46.9322100120 +60 31 03.244777716   12.07 11.47     F0 3 0
7 NGC 581 15 * 01 32 52.3419643488 +60 39 53.661608100   13.76 13.46     ~ 6 0
8 NGC 581 43 * 01 33 10.4742095952 +60 37 30.123007644   13.82 13.47     ~ 6 0
9 NGC 581 35 * 01 33 10.5255761256 +60 36 21.331451016   10.69 10.45     B2V 12 0
10 NGC 581 49 Be* 01 33 10.9704301848 +60 39 31.485877092   11.98 11.76     B3Ve 11 0
11 HD 9311 V* 01 33 14.0052506160 +60 41 11.174675424 7.19 7.58 7.29     B5Iab 85 0
12 NGC 581 59 * 01 33 16.1844079752 +60 39 43.439030892   11.66 11.45     ~ 7 0
13 EM* GGA 52 EB* 01 33 16.3315046328 +60 38 01.456429848   11.45 11.22     B2 25 0
14 NGC 581 52 EB* 01 33 18.3921646104 +60 38 26.387976588   13.47 13.17     ~ 9 0
15 NGC 581 70 * 01 33 19.4214881040 +60 40 47.388657000   11.94 11.74     B7~ 9 0
16 NGC 581 41 EB* 01 33 20.5769916600 +60 37 46.911734796   12.44 12.34     ~ 10 0
17 M 103 OpC 01 33 21.4 +60 39 32   7.72 7.4     ~ 201 0
18 NGC 581 73 * 01 33 21.7963010256 +60 40 12.151843104   10.76 10.59     B2V 9 0
19 NGC 581 166 * 01 33 22.2003180120 +60 35 51.931009536   14.36 13.59     ~ 4 0
20 EM* GGA 54 Be* 01 33 24.3386195448 +60 39 44.741355804   11.611 11.270     B2Ve 10 0
21 NGC 581 81 * 01 33 28.7433822408 +60 41 51.982636380   13.71 13.27     ~ 3 0
22 BD+59 274 V* 01 33 29.2148328144 +60 38 47.710826664 12.90 10.64 8.54     M0.5Ib-II 47 0
23 NGC 581 122 * 01 33 30.1762017624 +60 39 19.566766440   11.21 11.00     B5 6 0
24 NGC 581 86 ** 01 33 33.9023031024 +60 42 59.465810016   12.765 10.890 10.387   M5 7 0
25 Cl* NGC 581 ESY 53 * 01 33 41.7681396360 +60 34 52.158730728   14.06 13.76     ~ 7 0
26 EM* GGA 56 Be* 01 33 41.8971574752 +60 42 19.669410288   11.61 11.35     B2Ve 19 0
27 NGC 581 158 * 01 33 44.8082769672 +60 33 40.065117876   13.00 12.76     ~ 3 0
28 V* V1132 Cas gD* 01 33 45.4780599456 +60 37 23.191659156   8.53 8.23     F1V 44 0
29 NGC 581 111 EB* 01 34 02.2541019048 +60 40 00.213968280   12.09 11.84     ~ 10 0
30 Cl* NGC 581 MH 4 * 01 34 06.7142923752 +60 36 33.855814152   13.47 13.21     ~ 5 0
31 Cl Trumpler 1 OpC 01 35 40 +61 17.0   8.35 8.1     ~ 102 0
32 HD 9696 * 01 36 37.9408208736 +61 16 36.223709196   9.00 8.77     B8V 18 0
33 HD 236810 * 01 38 26.2845127968 +60 33 46.691837748 8.38 8.90 8.73     B2III 36 0
34 Cl* NGC 581 HOAG 3 * ~ ~   9.30 9.09     B2III 3 0

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