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

HD 155522


Contents

Images

Upload your image

DSS Images   Other Images


Related articles

Colour excesses of F-G supergiants and Cepheids from Geneva photometry.
A reddening scale for F-G supergiants and Cepheids is presented.Supergiants with low reddenings or in clusters form the basis of thecalibration. In this sense, it is entirely empirical. The data have beenobtained in the Geneva photometric system. Comparisons with otherreddening scales show no disagreement. The only problem is with Fernie'sscale for Cepheids (1990), where a systematic trend exists. Its originis not clear. It is suggested to extend the number of supergiants withindependently obtained colour excesses in order to test the existence ofa possible luminosity dependence of the calibration. A period-colourrelation for Cepheids is deduced, on the basis of the present reddeningcorrections. It gives strong support for V473 Lyr being a secondovertone pulsator.

Submit a new article


Related links

  • - No Links Found -
Submit a new link


Member of following groups:


Observation and Astrometry data

Constellation:Οκτάς
Right ascension:17h45m52.05s
Declination:-86°17'54.4"
Apparent magnitude:9.689
Proper motion RA:28.4
Proper motion Dec:-13.6
B-T magnitude:10.268
V-T magnitude:9.737

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 155522
TYCHO-2 2000TYC 9530-206-1
USNO-A2.0USNO-A2 0000-01540773
HIPHIP 86937

→ Request more catalogs and designations from VizieR