Release 11.12 ("Hergest Ridge")


Selected: NGC 6558

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Parameters
Positional Parameters
clusterNGC 6558
RA18 10 17.60
Declination-31 45 50.0
Galactic longitude0.2
Galactic latitude-6.02
R sun7.4
R gc1
X7.3
Y0
Z-0.8
Photometric Parameters
E (B-V)0.44
V HB16.3
(m-M)15.7
Vt9.26
MVt-6.44
(U-B)0.58
(B-V)1.11
(V-R)0.71
(V-I)1.46
S_RR23.5
hbt1
Structural Parameters
[Fe / H]-1.32
SpT F7
v_r-197.2
err1.5
v_LSR-189.4
c2.5
r_c0.03
r_h2.15
r_t10.44
lg(tc)5.71
lg(th)9.12
mu_V16.48
rho_v5.35
Color-magnitude diagrams
authorRich, R. M.; Ortolani, S.; Bica, E.; Barbuy, B.
titleVI Photometry of the Post-Core-Collapse Globular Cluster NGC 6558
and the Adjacent Bulge Field Population
journalThe Astronomical Journal, Volume 116, Issue 3, pp. 1295-1300 (1998)
CM diagram

Image

Image of the cluster from the Digital Sky Survey

Other Resources
for NGC 6558
ADS "Object Search"
SEDS data
Web Links for this cluster
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Users comments for this cluster
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Selected biblio
Paper n. 1
Barbuy, B.; Zoccali, M.; Ortolani, S.; Minniti, D.; Hill, V.; Renzini, A.; Bica, E.; Gómez, A.
NGC 6558: A Blue Horizontal Branch Moderately Metal-Poor Globular Cluster in the Bulge
2007, The Astronomical Journal, Volume 134, Issue 4, pp. 1613
(NGC 6558 )
Paper n. 2
Davidge, T. J.; Ledlow, M.; Puxley, P.
The Metal-Poor Inner Spheroid Globular Cluster NGC 6558
2004, The Astronomical Journal, Volume 128, Issue 1, pp. 300-311
(NGC 6558 )
Paper n. 3
Rich, R. M.; Ortolani, S.; Bica, E.; Barbuy, B.
VI Photometry of the Post-Core-Collapse Globular Cluster NGC 6558
and the Adjacent Bulge Field Population

1998, The Astronomical Journal, Volume 116, Issue 3, pp. 1295-1300 (1998)
(NGC 6558 cmd )
See all items (5 papers) :: Submit a paper
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