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 |
Fonds d'écran
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
Domaine | Télescope |
---|---|
Visible B | New Technology Telescope EMMI |
Visible V | New Technology Telescope EMMI |
Visible R | New Technology Telescope EMMI |