BVRIK Photometry for the field of 4U 0142+61 (Hulleman+, 2004)

Details BVRIK Photometry for the field of 4U 0142+61 (Hulleman+, 2004) BVRIK Photometry for the field of 4U 0142+61 (Hulleman+, 2004)

Feb 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ycat..34161037h&link_type=abstract

VizieR On-line Data Catalog: J/A+A/416/1037. Originally published in: 2004A&A...416.1037H

Astronomy and Astrophysics

Astronomy

Pulsars, X-Ray Sources, Photometry: Ubvri, Photometry: Infrared, Positional Data

Scientific paper

Infrared images in the K band were obtained on the nights of 1999 February 7 and 8 with the Near Infrared Camera, mounted on the Keck I telescope.
Further images were obtained on 2001 October 31 in the Ks band. Finally, an additional set of 18 frames, each consisting of five co-added exposures of 10s, was obtained on 2002 December 18. Optical observations were obtained with the Low Resolution Imaging Spectrograph at either of the two Keck telescopes.
For photometric calibration, we also used observations taken with the 60-inch telescope on Palomar mountain, using the direct imaging camera at the Cassegrain focus.
Observations in the B band were made for us on 2000 September 3. On 2000 December 29, further LRIS observations were taken, in Band R. On 2000 July 23, V, R and I-band images were taken under photometric conditions.
In order to verify the calibration, as well as to obtain a calibration for the B band, additional images were taken on 2000 November 18 (B, V, R and I) and 19 (B and V).
Table3 contains photometry for 4U 0142+61 and objects in the field. The errors listed are measurement uncertainties, and do not include the zero-point uncertainty of 0.03mag in all bands. The astrometry is based on the K-band image. Measurement errors range from 0.02arcsec for objects as faint as 4U 0142+61, to 0.005arcsec for the brighter ones. The astrometry is on the USNO-A2.0 system to within 0.1arcsec; it should be on the International Celestial Reference Frame to about 0.2arcsec.
(1 data file).

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