Home     Getting Started     To Survive in the Universe    
Inhabited Sky
    News@Sky     Astro Photo     The Collection     Forum     Blog New!     FAQ     Press     Login  

HD 172128


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

  • - No Links Found -
Submit a new link


Member of following groups:


Observation and Astrometry data

Constellation:Télescope
Right ascension:18h40m43.89s
Declination:-47°01'38.1"
Apparent magnitude:6.808
Distance:135.318 parsecs
Proper motion RA:-5.8
Proper motion Dec:11.2
B-T magnitude:6.889
V-T magnitude:6.815

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 172128
TYCHO-2 2000TYC 8364-777-1
USNO-A2.0USNO-A2 0375-36198247
HIPHIP 91589

→ Request more catalogs and designations from VizieR