Bibcode
DOI
Vivas, A. K.; Zinn, R.; Abad, C.; Andrews, P.; Bailyn, C.; Baltay, C.; Bongiovanni, A.; Briceño, C.; Bruzual, G.; Coppi, P.; Della Prugna, F.; Ellman, N.; Ferrín, I.; Gebhard, M.; Girard, T.; Hernandez, J.; Herrera, D.; Honeycutt, R.; Magris, G.; Mufson, S.; Musser, J.; Naranjo, O.; Rabinowitz, D.; Rengstorf, A.; Rosenzweig, P.; Sánchez, Ge.; Sánchez, Gu.; Schaefer, B.; Schenner, H.; Snyder, J. A.; Sofia, S.; Stock, J.; van Altena, W.; Vicente, B.; Vieira, K.
Referencia bibliográfica
The Astronomical Journal, Volume 127, Issue 2, pp. 1158-1175.
Fecha de publicación:
2
2004
Número de citas
117
Número de citas referidas
98
Descripción
With the 1 m Schmidt telescope of the Llano del Hato Observatory and the
QUEST CCD camera, 380 deg2 of the sky have been surveyed for
RR Lyrae variables in a band 2.3d wide in declination (centered at
δ=-1°) and covering right ascensions from 4h1 to 6h1 and from
8h0 to 17h0. The bright limit (due to CCD saturation) and the faint
limit are V~13.5 and ~19.7, respectively, which correspond to ~4 and ~60
kpc from the Sun. We present a catalog of the positions, amplitudes,
mean magnitudes, periods, and light curves of the 498 RR Lyrae variables
that have been identified in this region of the sky. The majority of
these stars (86%) are new discoveries. The completeness of the survey
has been estimated from simulations that model the periods and light
curves of real RR Lyrae variables and take into account the pattern of
epochs of observation. While the completeness of the survey varies with
apparent magnitude and with position, almost everywhere in the surveyed
region it is quite high (>80%) for the type ab RR Lyrae variables and
between 30% and 90% for the low-amplitude type c variables.
Based on observations collected at the 1 m Schmidt Telescope of the
Llano del Hato Observatory, Venezuela.