Fast simultaneous infrared and optical photometry of NGC4151

Details Fast simultaneous infrared and optical photometry of NGC4151 Fast simultaneous infrared and optical photometry of NGC4151

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.195..149l&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 195, Apr. 1981, p. 149-154.

Astronomy and Astrophysics

Astronomy

10

Galactic Nuclei, Galactic Structure, Infrared Astronomy, Seyfert Galaxies, Visual Photometry, Calibrating, Variability, X Ray Astronomy

Scientific paper

The Seyfert galaxy NGC4151 was observed continuously in bands V and K for several hours each night during the week 1979 May 14-21. In our 22 arcsec aperture its magnitude remained constant to better than 0.05 mag at V = 12.01 and K = 8.67 on all time-scales from minutes to one week. The implications of differing characteristic time-scales of variability in different wavebands for the structure of the nucleus are discussed.

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