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.

Crediti:

ESO

Riguardo l'immagine

Identificazione:eso0805a
Tipo:Osservazione
Data di rilascio:11 Febbraio 2008
Notizie relative:eso0805
Grandezza:1379 x 1376 px

Riguardo all'oggetto

Nome:RS Puppis
Tipo:Milky Way : Star : Type : Variable
Distanza:6500 Anni luce
Constellation:Puppis
Categoria:Nebulae

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Coordinate

Position (RA):8 13 4.17
Position (Dec):-34° 34' 43.24"
Field of view:5.72 x 5.70 arcminutes
Orientazione:Il Nord è a 120.2° a destra della verticale