A&A Supplement series, Vol. 129, May I 1998, 463-477
Received August 1; accepted October 13, 1997
F.A. Catalano
- F. Leone
- R.
Kroll
Send offprint request: F.A. Catalano
Istituto di Astronomia, Città Universitaria,
Viale A. Doria 6, I-95125 Catania, Italy
Osservatorio Astrofisico di Catania, Città Universitaria,
Viale A. Doria 6, I-95125 Catania, Italy
CNR-GNA, Unità di ricerca di Catania, Città Universitaria,
Viale A. Doria 6, I-95125 Catania, Italy
Instituto de Astrofisica de Canarias, 38200 La Laguna,
Tenerife, Spain
Twenty magnetic Chemically Peculiar (CP2) stars of the SrCrEu subgroup
mostly brighter than the 7.5 visual magnitude have been investigated
in the near infrared at 1.25, 1.6 and 2.2 
. The stars HD 3980,
HD 24712, HD 49976, HD 83368, HD 96616, HD 98088, HD 118022, HD 125248,
HD 148898, HD 203006, and HD 220825 have been found to be variable in the
infrared with the same period as the visible light, spectrum, and magnetic
field variations. HD 221760 is also variable with a period of 12.45 days,
which has to be confirmed. The stars HD 72968, HD 111133, HD 126515,
HD 153882, and HD 164258 do show some hint of variability, although the
data are too few. Infrared variability has been detected for the first
time in the stars HD 101065, and HD 206088, which have not yet been
considered as variable. No variability has been detected for the star
HD 137949 within a time scale of the order of ten days.
keywords: stars: chemically peculiar -- stars: variables: other -- infrared: stars