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J/AJ/127/1158       QUEST RR Lyrae Survey first catalog      (Vivas+, 2004)

The QUEST RR Lyrae survey. I. The first catalog. Vivas A.K., Zinn R., Abad C., Andrews P., Bailyn C., Baltay C., Bongiovanni A., Briceno C., Bruzual G., Coppi P., Della Prugna F., Ellman N., Ferrin 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., Sanchez Ge., Sanchez Gu., Schaefer B., Schenner H., Snyder J.A., Sofia S., Stock J., Van Altena W., Vicente B., Vieira K. <Astron. J., 127, 1158-1175 (2004)> =2004AJ....127.1158V
ADC_Keywords: Surveys ; Stars, variable ; Photometry Keywords: Galaxy: halo - stars: variables: other - survey Abstract: With the 1m Schmidt telescope of the Llano del Hato Observatory and the QUEST CCD camera, 380°2 of the sky have been surveyed for RR Lyrae variables in a band 23 wide in declination (centered at DE=-1°) and covering right ascensions from 4.1h to 6.1h and from 8.0h to 17.0h. The bright limit (due to CCD saturation) and the faint limit are V∼13.5 and ∼19.7, respectively, which correspond to ∼4kpc and ∼60kpc 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. Description: The survey was carried out with the QUEST camera, which is a 16-chip CCD mosaic detector installed at the 1m (clear aperture) Schmidt telescope at Llano del Hato Observatory in Venezuela, located at 3610m elevation, close to the equator (8.47° north) and under very dark skies. This camera has been built by the QUEST collaboration, which includes Yale University, Indiana University, Centro de Investigaciones de Astronomia (CIDA), and Universidad de Los Andes. The main goal of QUEST is to perform a large-scale survey of quasars, but its impressive capabilities can be used for other kinds of surveys. This survey uses drift-scan observations of the same region of the sky taken with the QUEST camera over a 2.3yr period, from 1998 December to 2001 April. The observations were designed for different scientific purposes, and thus the time spacing and filter set used varies. There were four different sequences of filters, UBUV, RBRV, RBIV, and RHαIV. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 119 498 RR Lyrae Stars
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 3 I3 --- [VZA2004] RR Lyrae identification number 5- 6 I2 h RAh Hour of right Ascension (J2000) 8- 9 I2 min RAm Minute of right ascension (J2000) 11- 15 F5.2 s RAs Second of right ascension (J2000) 17 A1 --- DE- Sign of the declination (J2000) 18- 19 I2 deg DEd Degree of declination (J2000) 21- 22 I2 arcmin DEm Arcminute of declination (J2000) 24- 27 F4.1 arcsec DEs Arcsecond of declination (J2000) 29- 30 I2 --- o_Vmag Number of Vmag observations 32- 35 F4.2 mag Amp The V-band amplitude 37- 44 F8.6 d Per Period 46- 53 F8.6 d Per2 ? Second possible period (see text) 55- 66 F12.4 d HJD Heliocentric Julian Date of observation at maximum light 68- 69 A2 --- Type Type of RR Lyrae star 71- 75 F5.2 mag Vmag Mean V-band magnitude 77- 80 F4.2 mag e_Vmag The 1 σ error in Vmag 82-119 A38 --- Name Other name(s) given in SIMBAD
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 02-Jul-2004
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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