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...

Full description

Saved in:
Bibliographic Details
Main Authors: Napiwotzki, R, Tovmassian, G, Richer, M G, Stasi, G, Pena, M, Drechsel, H, Dreizler, S, Rauch, T
Format: Conference Proceeding
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0094-243X
DOI:10.1063/1.2146265