Release 11.12 ("Hergest Ridge")


Selected: NGC 6440

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Parameters
Positional Parameters
clusterNGC 6440
RA17 48 52.70
Declination-20 21 36.9
Galactic longitude7.73
Galactic latitude3.8
R sun8.5
R gc1.3
X8.4
Y1.1
Z0.6
Photometric Parameters
E (B-V)1.07
V HB18.7
(m-M)17.95
Vt9.2
MVt-8.75
(U-B)1.47
(B-V)1.97
(V-R)1.24
(V-I)2.51
HBR-1
hbt7
Structural Parameters
[Fe / H]-0.36
SpT G4
v_r-76.6
err2.7
v_LSR-65.9
c1.62
r_c0.14
r_h0.48
r_t6.31
lg(tc)7.6
lg(th)8.62
mu_V17.06
rho_v5.24
Color-magnitude diagrams
authorOrtolani, S.; Barbuy, B.; Bica, E.
titleThe low galactic latitude metal-rich globular cluster NGC 6440
journalAstron. Astrophys. Suppl. 108, 653-659 (1994)
CM diagram

Image

Image of the cluster from the Digital Sky Survey

Other Resources
for NGC 6440
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
Mauro, Francesco et al.
Double Horizontal Branches in NGC 6440 and NGC 6569 Unveiled by the VVV Survey
2012, The Astrophysical Journal Letters, Volume 761, Issue 2, article id. L29, 6 pp.
(NGC 6440 NGC 6569 )
Paper n. 2
Ortolani, S.; Barbuy, B.; Bica, E.
The low galactic latitude metal-rich globular cluster NGC 6440
1994, Astron. Astrophys. Suppl. 108, 653-659 (1994)
(NGC 6440 cmd )
See all items (2 papers) :: Submit a paper
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