Release 7.11 ("Paola")

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Your query: M 56

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Parameters
Positional Parameters
clusterNGC 6779
nameM 56
RA19 16 35.
Declination+30 11 05
Galactic longitude62.66
Galactic latitude8.34
R sun10.1
R gc9.7
X4.6
Y8.9
Z1.5
Photometric Parameters
E (B-V)0.2
V HB16.16
(m-M)15.65
Vt8.27
MVt-7.38
(U-B)0.15
(B-V)0.86
(V-I)1.16
S_RR2.2
HBR0.98
hbt1
Structural Parameters
[Fe / H]-1.94
SpT F5
v_r-135.7
err0.8
v_LSR-116.9
c1.37
r_c0.37
r_h1.16
r_t8.56
lg(tc)8.19
lg(th)9.1
mu_V18.06
rho_v3.26
Color-magnitude diagrams
author Ivanov, Valentin D.; Borissova, Jordanka; Alonso-Herrero, Almudena; Russeva, Tatiana
titleExtending the Red Giant Branch versus Metallicity Calibration toward Metal-poor Systems:
Near-Infrared Photometry of the Galactic Globular Clusters M56 and M15
journalThe Astronomical Journal, Volume 119, Issue 5, pp. 2274-2281 (2000)
CM diagram
CreditsCMD from Padova database
Description of NGC 6779

Messier 56 (also known as M56 or NGC 6779) is a globular cluster in the constellation Lyra. It was discovered by Charles Messier in 1779. M56 is at a distance of about 32,900 light-years from Earth and measures roughly 84 light-years across.

The brightest stars in M56 are of 13th magnitude while it contains only about a dozen known variable stars like V6 (RV Tauri star; period: 90 days) or V1 (Cepheid: 1.510 days); other variable stars are V2 (irregular) and V3 (semiregular).

Source: Wikipedia | Notify inaccuracies

DSS image

Image of the cluster from the Digital Sky Survey

Other Resources
for NGC 6779
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Selected biblio
Paper n. 1
Ivanov, Valentin D.; Borissova, Jordanka; Alonso-Herrero, Almudena; Russeva, Tatiana
Extending the Red Giant Branch versus Metallicity Calibration toward Metal-poor Systems:
Near-Infrared Photometry of the Galactic Globular Clusters M56 and M15

The Astronomical Journal, Volume 119, Issue 5, pp. 2274-2281 (2000)
(NGC 6779 cmd )
See all items (1 paper)

Query processed at 21:51, 9th February
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