1998A&A...336..503K


Query : 1998A&A...336..503K

1998A&A...336..503K - Astronomy and Astrophysics, volume 336, 503-517 (1998/8-2)

Mass segregation in two young clusters in the Large Magellanic Cloud: SL 666 and NGC 2098.

KONTIZAS M., HATZIDIMITRIOU D., BELLAS-VELIDIS I., GOULIERMIS D., KONTIZAS E. and CANNON R.D.

Abstract (from CDS):

The age and dynamics of the young LMC clusters SL 666 and NGC 2098 were investigated using CCD observations obtained with the 3.9m Anglo-Australian Telescope. SL 666 was found to have an age of 1-1.25x108yr, while NGC 2098 is somewhat younger, with an age of 6.3-7.9x107yr. In the case of SL 666 the good quality of the acquired data allowed the construction of the main sequence luminosity function as a function of radius, which revealed mass segregation, also confirmed from star counts. Since the age of SL 666 is significantly lower than the mean relaxation time of at least 5x108yr calculated for this cluster and since the mass range of the cluster members does not permit us to assume faster energy equipartition, the observed mass segregation seems to be due to the way stars form in the cluster. Indications on a star formation scenario are examined. Disruption time is also discussed and there is strong evidence that the cluster is bound. NGC 2098 shows strong evidence of mass segregation, but further observations are needed in this case.

Abstract Copyright:

Journal keyword(s): galaxies: star clusters - galaxies: Magellanic clouds - stars: luminosity function, mass function - stars: Hertzsprung-Russel (HR) diagram

Simbad objects: 9

goto View the references in ADS

Number of rows : 9
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NGC 1711 Cl* 04 50 37.320 -69 59 01.72   11.22 11.10     ~ 111 0
2 NGC 1866 GlC 05 13 38.920 -65 27 52.75           ~ 401 0
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15990 1
4 LH 58 As* 05 26 45 -68 49.9   7.97 7.96     ~ 58 0
5 SN 1987A SN* 05 35 28.020 -69 16 11.07           SNIIpec 4691 2
6 NGC 2100 Cl* 05 42 07.200 -69 12 26.99   9.6       ~ 185 0
7 LH 111 As* 05 42 09 -69 12.6   9.11 8.94     ~ 28 0
8 KMHK 1254 OpC 05 42 14.160 -68 10 50.01           ~ 17 0
9 NGC 2098 Cl* 05 42 29.630 -68 16 26.35   10.89 10.73     ~ 37 0

To bookmark this query, right click on this link: simbad:objects in 1998A&A...336..503K and select 'bookmark this link' or equivalent in the popup menu


2022.05.22-01:35:45

© Université de Strasbourg/CNRS

    • Contact