2005AJ....130..626K

Query : 2005AJ....130..626K

2005AJ....130..626K - Astron. J., 130, 626-634 (2005/August-0)

Color-magnitude diagrams and luminosity functions down to the hydrogen-burning limit. III. A preliminary Hubble space telescope study of NGC 6791.

KING I.R., BEDIN L.R., PIOTTO G., CASSISI S. and ANDERSON J.

Abstract (from CDS):

Using Hubble Space Telescope Advanced Camera for Surveys Wide Field Channel images, we derive the color-magnitude diagram of the old, metal-rich open cluster NGC 6791 to nearly 29th magnitude in V, which is the neighborhood of the hydrogen-burning limit. Comparison with isochrones leads to a discussion of the distance modulus, the reddening, and the age of the cluster. By making a statistical correction for field stars, we derive a preliminary luminosity function and a very tentative mass function. The white dwarf sequence is clearly shown and has been discussed in a separate paper.

Abstract Copyright: ∼

Journal keyword(s): Stars: Hertzsprung-Russell Diagram - Galaxy: Open Clusters and Associations: Individual: NGC Number: NGC 6791 - Stars: Low-Mass, Brown Dwarfs

Simbad objects: 7

Full paper

View the references in ADS

Number of rows : 7

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	NGC 104	GlC	00 24 05.359	-72 04 53.20			4.09			~	4158	0
2	NGC 5139	GlC	13 26 47.28	-47 28 46.1						~	3677	0
3	M 4	GlC	16 23 35.22	-26 31 32.7						~	1978	0
4	NGC 6397	GlC	17 40 42.09	-53 40 27.6			5.17			~	2103	0
5	NGC 6791	OpC	19 20 52.8	+37 46 40		10.52	9.5			~	1120	0
6	Cl* NGC 6791 KR V31	El*	19 21 02.4630101016	+37 47 09.060968436	16.80	17.73	17.125	16.565	16.10	~	25	1
7	V* V523 Lyr	CV*	19 21 07.3950071424	+37 47 56.271903940	17.70					~	36	0

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