SIMBAD references

2011ApJ...733L...1P - Astrophys. J., 733, L1 (2011/May-3)

A new look at the old star cluster NGC 6791.

PLATAIS I., CUDWORTH K.M., KOZHURINA-PLATAIS V., McLAUGHLIN D.E., MEIBOM S. and VEILLET C.

Abstract (from CDS):

We present comprehensive cluster membership and g'r' photometry of the prototypical old, metal-rich Galactic star cluster NGC 6791. The proper-motion catalog contains 58,901 objects down to g'∼ 24, limited to a circular area of radius 30'. The highest precision of the proper motions is 0.08 mas/yr. Our proper motions confirm cluster membership of all main and also some rare constituents of NGC 6791. The total number of probable cluster members down to g' = 22 (MV∼ +8) is ∼4800, corresponding to Mtot~ 5000 M . New findings include an extended horizontal branch in this cluster. The angular radius of NGC 6791 is at least 15' (the effective radius is Rh ≃ 4'.4 while the tidal radius is rt≃ 23'). The luminosity function of the cluster peaks at M_{g^′}∼+4.5 and then steadily declines toward fainter magnitudes. Our data provide evidence that differential reddening may not be ignored in NGC 6791.

Abstract Copyright:

Journal keyword(s): astrometry - open clusters and associations: general - open clusters and associations: individual: NGC 6791 - proper motions

Nomenclature: Table 1: [PCK2011] NNNNN N=14 among (Nos 41698-93625).

Simbad objects: 31

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2019.10.16-00:57:48

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