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HD 101388


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Near infrared light variations of chemically peculiar stars. The SrCrEu stars
Twenty magnetic Chemically Peculiar (CP2) stars of the SrCrEu subgroupmostly brighter than the 7.5 visual magnitude have been investigated inthe near infrared at 1.25, 1.6 and 2.2 mu . 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 infraredwith the same period as the visible light, spectrum, and magnetic fieldvariations. 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, HD153882, and HD 164258 do show some hint of variability, although thedata are too few. Infrared variability has been detected for the firsttime in the stars HD 101065, and HD 206088, which have not yet beenconsidered as variable. No variability has been detected for the star HD137949 within a time scale of the order of ten days. Based onobservations collected at the European Southern Observatory, La SillaChile.

A photoelectric investigation of light variability in AP stars
A study of the light variability of a number of peculiar A stars, mainlyin Stromgren colors u and v and in peculiarity index Delta-a, leads tothe proposal of the following light variability periods: (1) HD 5601,1.11 days; (2) HD 19712, 2.19 days; (3) HD 30849, 15.86 days; (4) HD38823, 8.64 days; (5) HD 53116, 11.98 or 18.10 days; (6) HD 56022, 0.92days; and (7) HD 81009, 33.97 days. In addition, evidence is given forvariability of HD 94660 on a time scale on the order of months or years,and it is shown that the rotation period proposed by Borra andLandstreet (1980) for HD 25267 is not supported by the light variationsobserved. The character of Delta-a variability is discussed.

The nature of Przybylski's star - an AP star model inferred from the light variations and temperature
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1979ApJ...232..510K&db_key=AST

On the reddening and the effective temperature of HD 101065.
Abstract image available at:http://adsabs.harvard.edu/abs/1976MNRAS.177...99W

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Observation and Astrometry data

Constellation:ケンタウルス座
Right ascension:11h39m46.47s
Declination:-45°58'41.7"
Apparent magnitude:7.773
Distance:142.045 parsecs
Proper motion RA:-48
Proper motion Dec:-9.2
B-T magnitude:8.024
V-T magnitude:7.794

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 101388
TYCHO-2 2000TYC 8215-406-1
USNO-A2.0USNO-A2 0375-14203962
HIPHIP 56893

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