Photometric calibrations: The B-type stars in the Geneva system

Presentation of the essential data discussed in a review article published in New AR 43 (1999) 343-387. Can be updated when required.

The PDF file has been subdivided for convenience into 6 parts, but is also available as a single document.

Photometric calibrations 1: Abstract - Introduction - The Geneva system - Homogeneity

Photometric calibrations 2: Reddening-free techniques - The MK type calibration

Photometric calibrations 3: The intrinsic colours problem - Accuracy - Extinction versus distance distributions - Intrinsic colours of Mk types - Colour excess ratios

Photometric calibrations 4: Comparison with synthetic colours - Inevitable noise (duplicity, etc)

Photometric calibrations 5: Effective temperatures and Bolometric Corrections - Absolute magnitudes

Photometric calibrations 6: Comparisons with other systems - Concluding remarks - References

Photometric calibrations (Whole article. 1689 Ko PDF)

Photometry of B-type stars in the Geneva system

Presentation of the general classification properties of the Geneva photometric system, in particular regarding the B-type stars. The distribution of interstellar dust within 2 Kpc in the galactic plane is estimated. Adapted from a review article in Archs. Sci. Genève, Vol. 56, Fasc. 1, pp. 11-38, Juillet 2003. Can be occasionally updated.

Photometry of B-type stars (2383 Ko PDF)

The following is a series of richly illustrated articles concerning Geneva Photometry published in 2004 - 2005 in the journal ORION of the Swiss Astronomical Society. The level of presentation is that of the serious amateur or student in astronomy. Can be occasionally updated.

Aspects of Geneva Photometry (31000 Ko PDF)

Some "amateur" photographs / Quelques photos "en amateur"

Quelques unes de mes photos en relation avec l'Astronomie

Some of my astronomy-related photographs (English version)

Some articles of general interest / Quelques articles d'intérêt général

Editing a multi-lingual Astronomy Magazine (2001, 227 Ko PDF)

The art of Ludek Pesek (2000, 13 Mo PDF)

Text only version of "The art of Ludek Pesek" (2000, 41 K PDF)

L'astronomie... à quoi bon ? (2001, 10 Mo PDF)

Texte seul de "L'astronomie... à quoi bon ?" (2001, 94 K PDF)

De la sonde Galileo, de Galilée, et de la réalité du Monde (1999, 278 Ko PDF)

Notre biosphère et les impacts météoritiques (1997, 632 Ko PDF)

Quelques autres pages à voir à l'Observatoire de Genève.

• Observatoire de Genève Home Page
• Paul's files

L'Université de Genève**

L'Université de Lausanne**