Release 11.12 ("Hergest Ridge")


Selected: NGC 6205

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Parameters
Positional Parameters
clusterNGC 6205
nameM 13
RA16 41 41.24
Declination+36 27 35.5
Galactic longitude59.01
Galactic latitude40.91
R sun7.1
R gc8.4
X2.8
Y4.6
Z4.7
Photometric Parameters
E (B-V)0.02
V HB14.9
(m-M)14.33
Vt5.78
MVt-8.55
(U-B)-0.02
(B-V)0.68
(V-I)0.86
S_RR1.7
HBR0.97
hbt0
Structural Parameters
[Fe / H]-1.53
SpT F6
v_r-244.2
err0.2
v_LSR-228
c1.53
r_c0.62
r_h1.69
r_t25.18
lg(tc)8.51
lg(th)9.3
mu_V16.59
rho_v3.55
Color-magnitude diagrams
authorCohen, Randi L. et al.
titleGlobular Cluster Photometry with the Hubble Space Telescope.
VI.WF/PC-I Observations of the Stellar Populations in the Core of M13 (NGC 6205)
journalAstronomical Journal v.113, p. 669-681
CM diagram

Description of NGC 6205

The Great Globular Cluster in Hercules (also known as the Hercules Globular Cluster, Messier Object 13, Messier 13, M13, or NGC 6205) is a globular cluster in the Hercules constellation (..)

It was discovered by Edmond Halley in 1714, and catalogued by Charles Messier on June 1, 1764.

With an apparent magnitude of 5.8, it is barely visible with the naked eye on a very clear night. Its real diameter is about 145 light-years, and is composed of several hundred thousand stars, the brightest of which is the variable star V11 with an apparent magnitude of 11.95. M13 is 25,100 light-years away from Earth.

Source: Wikipedia | Notify inaccuracies

Image

Image of the cluster from the Digital Sky Survey

Other Resources
for NGC 6205
ADS "Object Search"
C. Clement variables data
SEDS data
Google Sky
Web Links for this cluster
(8 links in the database at the moment)
Users comments for this cluster
(1 comment in the database at the moment)
Selected biblio
Paper n. 1
Dalessandro, E.; Salaris, M.; Ferraro, F. R.; Mucciarelli, A.; Cassisi, S.
The horizontal branch in the UV colour-magnitude diagrams - II. The case of M3, M13 and M79
2013, MNRAS, Volume 430, Issue 1, p.459-471
(NGC 6205 NGC 5272 NGC 1904 )
Paper n. 2
Sandquist, Eric L.; Gordon, Mark; Levine, Daniel; Bolte, Michael
A Re-evaluation of the Evolved Stars in the Globular Cluster M13
2010, The Astronomical Journal, Volume 139, Issue 6, pp. 2374-2409
(NGC 6205 )
Paper n. 3
Cohen, Randi L. et al.
Globular Cluster Photometry with the Hubble Space Telescope.
VI.WF/PC-I Observations of the Stellar Populations in the Core of M13 (NGC 6205)

1997, Astronomical Journal v.113, p. 669-681
(NGC 6205 cmd )
See all items (6 papers) :: Submit a paper
Tutor(s) for this cluster:
Francisco Violat Bordonau

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Query processed at 17:26, 22nd May
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