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J/A+A/534/A91    Galactic Bulge Valinhos Observatory Catalog   (Teixeira+, 2011)

Proper motion and densification of the International Celestial Reference Frame in the direction of the Galactic bulge. Teixeira R., Galli P.A.B., Benevides-Soares P., Le Campion J.F., Fidencio M., Krone-Martins A., Ducourant C., Sinachopoulos D. <Astron. Astrophys. 534, A91 (2011)> =2011A&A...534A..91T
ADC_Keywords: Meridian observations ; Milky Way ; Stars, faint ; Proper motions ; Photometry, infrared ; Effective temperatures Keywords: Galaxy, bulge - astrometry - reference systems - dust, extinction - catalogs - proper motions Abstract: The definition, construction and realization of a reference system is one of the oldest and most fundamental tasks of astronomy. Currently, the ICRS (International Celestial Reference System), realized by the ICRF (International Celestial Reference Frame) or ICRF2, is the reference system adopted by the IAU. It is based on the very precise VLBI positions of a few hundred compact extragalactic radio sources. Despite its excellent precision, the ICRF is far from providing a reference system that is available for the entire sky and accessible to all observers. The ICRF has to be densified and extended to other wavelengths, mainly to the optical domain where the astronomical activities are more intense. For this reason, the IAU has recommended and encouraged works in this direction over the years. Many of them were developed to give sometimes good positions and proper motions, but they are very limited in magnitude, while others are extremely dense and deep in magnitude but have low accuracy, mainly for the proper motions. Nevertheless, all these contributions are very important because they are complementary. We present a homogeneous and precise optical astrometric catalog that extends the ICRF in the direction of 12 low-extinction windows of the Galactic bulge and provides at the same time a useful database for kinematic studies. Description: The Galactic Bulge Valinhos Observatory Catalog (GBVOC) contains 11619 stars brighter than V∼16 magnitudes, located in the direction of 12 low extinction windows of the Galactic bulge. The catalog provides the J2000.0 positions, proper motions at the mean epoch and their errors. These astrometric parameters were measured exclusively with CCD meridian observations realized at the Abrahao de Moraes Observatory Valinhos (Brazil) with a mean internal precision of 22mas for the positions and 4mas/yr for the proper motions. The catalog also contains the V magnitudes and mean epochs of observations. Moreover, an indicative effective temperature (better than 500K) based on the 2MASS photometry is given. The JHK 2MASS magnitudes and identifier are also provided. In the last column the capital letter T indicates that the star is present in the Tycho 2 catalog. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 128 11619 Galactic Bulge Valinhos Observatory Catalog, GBVOC
See also: II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) J/A+AS/136/261 : Reference stars for 12 low-extinction fields (Dominici+ 1999) J/A+AS/139/321 : Stellar variability towards Galactic Bulge (Dominici+ 1999) J/A+A/517/A44 : Spitzer sources in the Galactic bulge (Uttenthaler+, 2010) J/ApJS/194/18 : The Galactic Bulge Survey: X-ray observations (Jonker+, 2011) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 2 A2 --- win Local identifier of the low extinction window as in Dominici et al., 1999, Cat. J/A+AS/136/261 4- 5 I2 h RAh Right Ascension J2000, at mean epoch EpRA 7- 8 I2 min RAm Right Ascension J2000, at mean epoch EpRA 10- 16 F7.4 s RAs Right Ascension J2000, at mean epoch EpRA 18 A1 --- DE- Declination J2000, at mean epoch EpDE 19- 20 I2 deg DEd Declination J2000, at mean epoch epDE 22- 23 I2 arcmin DEm Declination J2000, at mean epoch EpDE 25- 30 F6.3 arcsec DEs Declination J2000, at mean epoch EpDE 32- 36 F5.1 mas e_RAs Error on RA at mean epoch (EpRA) 38- 41 F4.1 mas e_DEs Error on DE at mean epoch (EpDE) 43- 48 F6.1 mas/yr pmRA Proper motion in RA*cosDE 50- 55 F6.1 mas/yr pmDE Proper motion in DE 57- 60 F4.1 mas/yr e_pmRA Error on pmRA 62- 65 F4.1 mas/yr e_pmDE Error on pmDE 67- 70 F4.1 mag Vmag Valinhos merdian magnitude 72- 74 F3.1 mag e_Vmag Error on Vmag 76- 81 F6.1 yr EpRA Observational mean epoch in RA 83- 88 F6.1 yr EpDE Observational mean epoch in DE 90- 93 F4.1 mag Jmag ? 2MASS J magnitude 95- 98 F4.1 mag Hmag ? 2MASS H magnitude 100-103 F4.1 mag Kmag ? 2MASS K magnitude 105-109 I5 K Teff ? Effective Temperature 111-126 A16 --- 2MASS 2MASS (II/246) identifier 128 A1 --- TYC [T] Flag of presence in Tycho 2 (I/259) catalog
Acknowledgements: Rama Teixeira, teixeira(at)astro.iag.usp.br
(End) Patricia Vannier [CDS] 06-Oct-2011
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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