Issue |
Astron. Astrophys. Suppl. Ser.
Volume 130, Number 2, June I 1998
|
|
---|---|---|
Page(s) | 359 - 367 | |
DOI | https://doi.org/10.1051/aas:1998409 | |
Published online | 15 June 1998 |
Faint photometric BVRc CCD sequences *,**
The North galactic pole (
)
and the anticenter (
,
)
1
Osservatorio Astronomico, Strada Osservatorio 20, I-10025 Pino Torinese, Italy
2
Space Telescope Science Institute, 3700 San Martin Dr., Baltimore MD 21218, U.S.A.
Send offprint request to: A. Spagna (spagna@to.astro.it)
Received:
23
May
1997
Accepted:
24
December
1997
Lists of CCD photometric standard stars in the BVRc
system of Johnson and Cousins are presented for two regions of
importance in studies of galactic structure and kinematics: one
at the North galactic pole (NGP) (),
and a second on the galactic equator toward the
anti–center (
,
).
Precision of both magnitudes and colors is better than 0.05 mag
down to
for the NGP sample, and to
for the set on
the galactic plane.
Accuracy is also better than 0.05 mag,
as shown by comparison to standard (intrinsic) color-color diagrams.
These sequences should fulfil the needs for faint reference stars
in the photometric calibration of old and new large-area surveys
using wide-angle photographic plates. This is the case,
for example, of the new multicolor surveys of the Palomar
Observatory, which uses the Oschin Schmidt telescope, and the
Second Generation Southern Sky Survey, which
utilizes UK Schmidt of the Anglo Australian
Observatory in Siding Spring.
Key words: catalogs / Galaxy: structure / techniques: photometric
© European Southern Observatory (ESO), 1998