Access to Astronomical Catalogues

← Click to display the menu
J/PASP/110/779       Accurate Positions for MCG Galaxies         (Corwin+ 1998)

Accurate Positions for MCG Galaxies Corwin H.G., Pesenson I., Schmitz M., Kim D.-C., Bennett J., Madore B.F., Mazzarella J.M., Helou, G. <Publ. Astron. Soc. Pac. 110, 779 (1998)> =1998PASP..110..779C
ADC_Keywords: Positional data; Galaxy catalogs Description: We have measured accurate celestial coordinates for over 4000 extragalactic objects primarily drawn from a list of MCG galaxies with no recently published accurate positions. We used IPAC's Skyview program to display FITS images clipped from the Digitized Sky Survey, and to measure the coordinates. The standard deviations in the new positions depend slightly on the measurement command used, but are on the order of 1.0 arcsec to 1.2 arcsec (internal errors). The table of data includes all the duplicate measurements we made, as well as corrections and additions made after the PASP paper was submitted, so has 5120 entries. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file position.dat 58 5120 Accurate positions
See also: VII/62 : MCG Vols 1-4 (Vorontsov-Velyaminov+, 1962-1974) VII/100 : MCG Vol.5 (Vorontsov-Velyaminov+, 1974) Nomenclature Notes: The names in bytes 1-30 are in NED format. The suffix "NEDnn" (nn is a two-digit number) added to a catalog name to create unique names in NED when the original catalogs do not include separate entries for double or multiple galaxies. The suffix "NOTESnn" is added when the galaxy is included only in the Notes of the original catalogue. Text describing position.dat: Bytes 1-30 include one of the names for the galaxy included in NED. Byte-by-byte Description of file: position.dat
Bytes Format Units Label Explanations
1- 30 A30 --- Name NED name 31- 32 I2 h RAh Right Ascension hours (J2000.0) 34- 35 I2 min RAm Right Ascension minutes (J2000.0) 37- 41 F5.2 s RAs Right Ascension seconds (J2000.0) 44 A1 --- DE- Declination sign (J2000.0) 45- 46 I2 deg DEd Declination degrees (J2000.0) 48- 49 I2 arcmin DEm Declination minutes of arc (J2000.0) 51- 54 F4.1 arcsec DEs Declination seconds of arc (J2000.0) 57 A1 --- Method *Method of measurement 58 A1 --- Survey *Sky survey name
Note on Method: The method of measurement is "P" for measurements using Skyview's "pick" command, or "E" for measurements using the "examine" command. Note on Survey: The digitized sky survey plate is "E" for the POSS1 103a-E red plates, and "J" for the SERC IIIa-J blue-green plates.
Acknowledgments: Skyview was produced at IPAC under NASA contract NAS7-918. The Digitized Sky Surveys were produced at the Space Telescope Science Institute under US Government grant NAG W-2166. The images of these surveys are based on photographic data obtained using the Oschin Schmidt Telescope on Palomar Mountain and the UK Schmidt Telescope at Siding Spring. The NASA/IPAC Extragalactic Database (NED) is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Areonautics and Space Administration. References: Vorontsov-Velyaminov B. A., Archipova V. P., and Krasnogorskaya A. A. 1962, 1963, 1964, 1968, 1974, Morphological Catalogue of Galaxies, Vols. 1-5 (Moscow: Moscow State Univ.) (MCG) =1962MCG...C01....0V =1964MCG...C02....0V =1963MCG...C03....0V =1968MCG...C04....0V =1974MCG...C05....0V
(End) Harold G. Corwin, Jr. [NED/IPAC/Caltech] 09-Jul-1998
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

catalogue service

© UDS/CNRS

Contact