38
In Fig. 6 (click here) is shown the V vs. (V-I) diagram for the
Danish whole frame.
Similarly to the field of Terzan 10 (Fig. 4 (click here))
the disk main sequence and the extended
bulge HB are the most conspicuous features,
but differential reddening is much less
important, with 
.
Accordingly,
the bulge cool giants define a narrow sequence.
From the NTT data, the V vs. (V-I) diagram for
ESO 
38 in
an extraction of radius r < 26''
is shown in Fig. 7 (click here).
The RGB is clearly detected and possibly the HB
is reached although near the detection limit.
The brightest giants are found at
and
.
Figure 6: ESO 38: V vs. (V-I)
colour-magnitude diagram for the Danish whole frame
Figure 7: ESO 38: V vs. (V-I)
colour-magnitude diagram for an extraction of radius
r < 26'' from the NTT data
The fit to the mean loci of reference clusters
(see Sect. 3.2) indicates that ESO 38
is similar to 47 Tuc.
From an integrated spectrum, Bica et al. (1997)
estimated 
.
Hence we adopt a metallicity of
.
From the fit to the mean locus of 47 Tuc,
the HB level should be located at
and
the RGB colour at the HB level 
.
Using the same prescriptions as in Sect. 3.3,
taking only 47 Tuc as reference in this case,
we obtain for ESO 38,
a reddening of 
and 
.
For the adopted metallicity and reddening, we derive
R = 3.35 leading to 
.
The absolute magnitude of the HB results
MV = 0.90, implying
a true distance modulus of
(m-M)0 = 13.70 and a distance 
kpc.
The Galactocentric coordinates are X = 2.5,
Y = 0.3 and Z = -0.2 kpc.