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HD 23660


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Ýlgili Makaleler

Evidence of decay of the magnetic fields of AP stars
Data obtained in the Geneva photometric system (Rufener, 1981) andappropriate calibrations of this system in terms of surface magneticfield and gravity are used to provide, on the basis of 708 field andcluster Ap stars, observational evidence that these stars undergo decayof their magnetic field on an evolutionary timescale. Justifications aregiven for the application of a photometric gravity calibration topeculiar stars. The dependence of the photometrically estimated surfacemagnetic field on gravity is found to differ markedly from availabletheoretical calculations. HgMn stars are found to show the same trend,strengthening the impression that they might be slightly magnetic.He-weak stars do not.

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Agcik
Sað Açýklýk:03h44m16.45s
Yükselim:-54°28'40.2"
Görünürdeki Parlaklýk:7.332
Uzaklýk:116.55 parsek
özdevim Sað Açýklýk:51.4
özdevim Yükselim:118.4
B-T magnitude:8.397
V-T magnitude:7.42

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 23660
TYCHO-2 2000TYC 8500-859-1
USNO-A2.0USNO-A2 0300-01106175
HIPHIP 17445

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