CCD photometry of Markarian 421 and 501

Details CCD photometry of Markarian 421 and 501 CCD photometry of Markarian 421 and 501

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...258...53h&link_type=abstract

Astrophysical Journal, Part 1, vol. 258, July 1, 1982, p. 53-58. Research supported by the Natural Sciences and Engineering Res

Astronomy and Astrophysics

Astrophysics

27

Astronomical Photometry, Bl Lacertae Objects, Galaxies, Brightness, Charge Coupled Devices, Elliptical Galaxies

Scientific paper

A CCD detector at the prime focus of a 3.6 m telescope has been used to observe the BL Lacertae objects Markarian 501 and 421 in two bands of FWHM equaling approximately 700 A, centered at 5000 and 6500 A. The photometric profiles obtained for both objects are shown to be consistent with composite profiles from a point source and from an elliptical galaxy that obeys the de Vaucouleurs surface brightness law. The photometric parameters derived for the underlying galaxies show them to be apparently normal elliptical galaxies.

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