On the most metal-poor PN and its binary central star

On the most metal-poor PN and its binary central star

PNG135.9+55.9 is the most metal-poor PN known in our Galaxy. The central star resides in a short-period binary system with a compact component, probably a white dwarf. We describe new observations, which allowed us to determine the orbital period. The lower limit for the combined mass of both stars...

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Hauptverfasser: Napiwotzki, R, Tovmassian, G, Richer, M G, Stasi, G, Pena, M, Drechsel, H, Dreizler, S, Rauch, T
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container_volume 804
creator Napiwotzki, R
Tovmassian, G
Richer, M G
Stasi, G
Pena, M
Drechsel, H
Dreizler, S
Rauch, T
description PNG135.9+55.9 is the most metal-poor PN known in our Galaxy. The central star resides in a short-period binary system with a compact component, probably a white dwarf. We describe new observations, which allowed us to determine the orbital period. The lower limit for the combined mass of both stars is close to the Chandrasekhar limit for white dwarfs, making this binary a possible progenitor of a supernova type Ia. The binary system must have recently emerged from a common envelope phase.
doi_str_mv 10.1063/1.2146265
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title On the most metal-poor PN and its binary central star
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