Abstract
view Abstract Citations (16) References (29) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Short Time Scale Variability of the BL Lacertae Object OJ 287 in the Near-Infrared Lorenzetti, D. ; Massaro, E. ; Perola, G. C. ; Spinoglio, L. Abstract The results of a near-infrared photometric monitoring of the BL Lac object OI 287 are presented. The standard JHK photometry shows variability of maximum amplitude ~ 0.7 mag over the entire observing period of 23 months and ~ 0.3 mag on time intervals as short as ~ 3 hr. No spectral variability has been found. A fast monitoring performed in the H band, with a sampling period of ~ 4 minutes, provides evidence that variations can occur in this object on time scales of >~ 4 minutes and with an rms amplitude of 6%-7%. These variations show slow increasing and fast decreasing trends, but no clear indication of periodicity is apparent. Publication: The Astrophysical Journal Supplement Series Pub Date: October 1989 DOI: 10.1086/191370 Bibcode: 1989ApJS...71..175L Keywords: Bl Lacertae Objects; Extragalactic Radio Sources; Infrared Photometry; Near Infrared Radiation; Astronomical Photometry; Root-Mean-Square Errors; Temporal Distribution; Astrophysics; BL LACERTAE OBJECTS; GALAXIES: INDIVIDUAL ALPHANUMERIC: OJ 287; INFRARED: SOURCES; RADIO SOURCES: VARIABLE full text sources ADS | data products SIMBAD (1) NED (1)
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