1999ApJ...514L..25L


Query : 1999ApJ...514L..25L

1999ApJ...514L..25L - Astrophys. J., 514, L25-L26 (1999/March-3)

On the nature of the peculiar hot star in the young Large Magellanic Cloud cluster NGC 1818.

LIEBERT J.

Abstract (from CDS):

The blue star reported in the field of the young LMC cluster NGC 1818 by Elson et al. in 1998 has the wrong luminosity and radius to be a ``luminous white dwarf'' member of the cluster. In addition, unless the effective temperature range quoted by the authors is a drastic underestimate, the luminosity is much too low for it to be a cluster member in the post-asymptotic giant branch phase. Other possibilities, including that of binary evolution, are briefly discussed. However, the implication that the massive main-sequence turnoff stars in this cluster can produce white dwarfs (instead of neutron stars) from single-star evolution needs to be reconsidered.

Abstract Copyright:

Journal keyword(s): Galaxy: Globular Clusters: Individual: NGC Number: NGC 1818 - Stars: White Dwarfs

CDS comments: Hot star in NGC 1818 = EQ J0504-6626

Simbad objects: 5

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Number of rows : 5
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 EGGR 25 WD* 03 52 11.3301458285 +24 55 48.797718780 15.42 16.32 16.52     DA1.5 84 0
2 NGC 1818 GlC 05 04 13.300 -66 26 05.47           ~ 261 0
3 EQ J0504-6626 blu 05 04 13.7 -66 26 33     18.44     ~ 2 0
4 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17434 0
5 NGC 2516 OpC 07 58 06.5 -60 48 00           ~ 713 0

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