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.
Credit:ESO
Over de afbeelding
Id: | eso0805a |
Type: | Observatie |
Publicatiedatum: | 11 februari 2008 |
Gerelateerde berichten: | eso0805 |
Grootte: | 1379 x 1376 px |
Over het object
Naam: | RS Puppis |
Type: | Milky Way : Star : Type : Variable |
Afstand: | 6500 lichtjaren |
Constellation: | Puppis |
Categorie: | Nebulae |
Achtergrond
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 |
Kleuren & filters
Band | Telescoop |
---|---|
Optisch B | New Technology Telescope EMMI |
Optisch V | New Technology Telescope EMMI |
Optisch R | New Technology Telescope EMMI |