Variability of R CrB and NML CYG at 3.5 microns

Details Variability of R CrB and NML CYG at 3.5 microns Variability of R CrB and NML CYG at 3.5 microns

Jun 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975aj.....80..451s&link_type=abstract

Astronomical Journal, vol. 80, June 1975, p. 451-453.

Astronomy and Astrophysics

Astronomy

22

Astronomical Photometry, Infrared Astronomy, Late Stars, R Coronae Borealis Stars, Variable Stars, Binary Stars, Calibrating, Energy Distribution, Reference Stars

Scientific paper

The 3.5-micron magnitudes of R CrB and NML Cyg as a function of Julian date (over the period 1968-1974) are presented and briefly analyzed. They establish the variability of R CrB at this wavelength: during the interval studied, its magnitude varied approximately 1.4 units, in a definite cyclic pattern. The magnitude variations of NML Cyg were smaller (about 0.5 mag), but they may be cyclic with a period on the same order as that of R CrB.

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