Contents
Images
Upload your image
DSS Images Other Images
Related articles
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.
|
Submit a new article
Related links
Submit a new link
Member of following groups:
|
Observation and Astrometry data
| Constellation: | Réticule |
| Right ascension: | 03h44m16.45s |
| Declination: | -54°28'40.2" |
| Apparent magnitude: | 7.332 |
| Distance: | 116.55 parsecs |
| Proper motion RA: | 51.4 |
| Proper motion Dec: | 118.4 |
| B-T magnitude: | 8.397 |
| V-T magnitude: | 7.42 |
Catalogs and designations:
|
