Release 11.12 ("Hergest Ridge")


Selected: NGC 6171

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Parameters
Positional Parameters
clusterNGC 6171
nameM 107
RA16 32 31.86
Declination-13 03 13.6
Galactic longitude3.37
Galactic latitude23.01
R sun6.4
R gc3.3
X5.9
Y0.3
Z2.5
Photometric Parameters
E (B-V)0.33
V HB15.7
(m-M)15.05
Vt7.93
MVt-7.12
(U-B)0.69
(B-V)1.1
(V-R)0.72
(V-I)1.45
S_RR31
HBR-0.73
hbt6
Structural Parameters
[Fe / H]-1.02
SpT G0
v_r-34.1
err0.3
v_LSR-23
c1.53
r_c0.56
r_h1.73
r_t17.44
lg(tc)8.06
lg(th)9
mu_V18.94
rho_v3.08
Color-magnitude diagrams
authorFerraro, F. R.; Clementini, G.; Fusi Pecci, F.; Buonanno, R.
titleCCD-photometry of galactic globular clusters. III - NGC 6171
journalMNRAS, vol. 252, Oct. 1, 1991, p. 357-377 (1991)
CM diagram
CreditsCMD from "Padova database"
Description of NGC 6171

Globular Cluster M107 (also known as Messier Object 107 or NGC 6171) is a very loose globular cluster in the constellation Ophiuchus. It was discovered by Pierre Mechain in April 1782 and independently by William Herschel in 1793. It wasn't until 1947 that Helen Sawyer Hogg added it, and three other objects discovered by Mechain to the list of Messier objects.

M107 is close to the galactic plane at a distance of about 20,900 light-years from Earth. There are 25 known variable stars in this cluster.

Source: Wikipedia | Notify inaccuracies

Image

Image of the cluster from the Digital Sky Survey

Other Resources
for NGC 6171
ADS "Object Search"
C. Clement variables data
SEDS data
Google Sky
Web Links for this cluster
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Users comments for this cluster
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Selected biblio
Paper n. 1
Ferraro, F. R.; Fusi Pecci, F.; Montegriffo, P.; Origlia, L.; Testa, V.
Deep infrared array photometry of galactic globular clusters: the main sequence of NGC 6171
1995, Astronomy and Astrophysics, v.298, p.461
(NGC 6171 )
Paper n. 2
Ferraro, Francesco R.; Piotto, Giampaolo
Deep luminosity functions of globular clusters. IV - NGC 6171
1992, MNRAS , vol. 255, p. 71-82
(NGC 6171 )
Paper n. 3
Ferraro, F. R.; Clementini, G.; Fusi Pecci, F.; Buonanno, R.
CCD-photometry of galactic globular clusters. III - NGC 6171
1991, MNRAS, vol. 252, Oct. 1, 1991, p. 357-377 (1991)
(NGC 6171 cmd )
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Query processed at 13:02, 21st February
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