The Cepheid star RS Pup

The nebula around the Cepheid star RS Pup undoubtedly holds a wealth of information about the mass-loss history of this star. It will thus be instrumental to understand the evolution of Cepheids. Less than five years away from the centenary of the discovery of the Period-Luminosity relation by Leavitt & Pickering, RS Pup could well become a ''Rosetta stone'' for this important class of stars. This colour composite image is based on observations made with the 3.6-m ESO New Technology Telescope (NTT) installed at the La Silla Observatory (Chile) and equipped with the ESO Multi-Mode Instrument (EMMI). The image is based on data obtained through B, V, and R-filters. In order to avoid a heavy saturation of the detector, RS Pup was positioned in the gap between the detectors.

Crédit:

ESO

À propos de l'image

Identification:eso0805a
Type:Observation
Date de publication:11 février 2008
Communiqués de presse en rapport:eso0805
Taille:1379 x 1376 px

À propos de l'objet

Nom:RS Puppis
Type:Milky Way : Star : Type : Variable
Distance:6500 années lumière
Constellation:Puppis
Catégorie:Nebulae

Image Formats

Grand JPEG
261,4 Kio
JPEG taille écran
174,3 Kio

Fonds d'écran

1024x768
168,9 Kio
1280x1024
234,9 Kio
1600x1200
284,7 Kio
1920x1200
306,8 Kio
2048x1536
389,4 Kio

Coordinates

Position (RA):8 13 4.17
Position (Dec):-34° 34' 43.24"
Field of view:5.72 x 5.70 arcminutes
Orientation:North is 120.2° right of vertical

Couleurs & filtres

DomaineTélescope
Visible
B
New Technology Telescope
EMMI
Visible
V
New Technology Telescope
EMMI
Visible
R
New Technology Telescope
EMMI

 

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