2005JAVSO..34...61H

Query : 2005JAVSO..34...61H

2005JAVSO..34...61H - J. Am. Assoc. Variable star obs., 34, 61 (2005/December-0)

Using a Small Telescope to Detect Variable Stars in Globular Cluster NGC 6779.

HORNE J.D.

Abstract (from CDS):

The nominal feasibility of utilizing small instruments, in near-urban environments, to detect variable stars in globular clusters is demonstrated through the use of modern CCD cameras and commercially available image processing software. A 0.25-meter telescope and a camera with a 550 ' 752 CCD array were used to detect and perform photometry of six of the twelve known variable stars in NGC 6779 (M56). Two commercial image processing and photometric analysis software packages were utilized, and multiple variable detection techniques were examined. The periods of five variables were derived and color magnitude diagrams for the entire cluster were developed.

Abstract Copyright: ∼

Journal keyword(s): NGC 6779, Variable Stars, M56, Globular Clusters

Simbad objects: 1

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Number of rows : 1
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 M 56 GlC 19 16 35.57 +30 11 00.5           ~ 455 0

Query : 2005JAVSO..34...61H

Basic data :
M 56 -- Globular Cluster
Other object types: otypes_help 		GlC (2013A&A,GCl), Cl* (C,[KPS2012]), * (CSI,GCRV)
ICRS coord. (ep=J2000) : 		19 16 35.57 +30 11 00.5 (Optical) [ ] D 2010AJ....140.1830G
FK4 coord. (ep=B1950 eq=1950) : 		19 14 38.49 +30 05 35.7 [ ]
Gal coord. (ep=J2000) : 		062.65941 +08.33638 [ ]
Proper motions mas/yr : 		-2.02 1.65 [0.01 0.01 90] C 2019MNRAS.482.5138B
Radial velocity / Redshift / cz : 		V(km/s) -122.0 [0.5] / z(spectroscopic) -0.000407 [0.000002] / cz -121.98 [0.50]
   (Opt) A 2018MNRAS.478.1520B
Parallaxes (mas): 		0.091 [0.011] C 2021MNRAS.505.5978V
Angular size (arcmin): 		7.1 7.1 90 (Opt) D 1989Sci...246.1066D
Fluxes (5) :
K 5.58 [~] D 2008MNRAS.389.1924F
g (AB) 8.613 [0.030] C 2014MNRAS.437.1725V
r (AB) 8.138 [0.044] C 2014MNRAS.437.1725V
i (AB) 7.879 [0.044] C 2014MNRAS.437.1725V
z (AB) 7.748 [0.044] C 2014MNRAS.437.1725V
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1 : 186 Display criteria :

Identifiers (7) :
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M 56 CSI+30-19146 3 GCRV 11736 [KPS2012] MWSC 3077
C 1914+300 GCl 110 NGC 6779

References (455 between 1850 and 2026) (Total 455)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 4    Distance : 1    Plx : 2    PM : 3   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : M 56

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NGC 6779

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