The Σ − D relation for planetary nebulae: Preliminary analysis

Autor:	Urošević D., Vukotić B., Arbutina B., Ilić D.
Jazyk:	angličtina
Rok vydání:	2007
Předmět:	planetary nebulae: General radio continuum: ISM methods: analytical methods: statistical Astronomy QB1-991
Zdroj:	Serbian Astronomical Journal, Vol 2007, Iss 174, Pp 73-77 (2007)
Druh dokumentu:	article
ISSN:	1450-698X 1820-9289
DOI:	10.2298/SAJ0774073U
Popis:	An analysis of the relation between radio surface brightness and diameter, so-called Σ − D relation, for planetary nebulae (PNe) is presented: i) the theoretical Σ − D relation for the evolution of bremsstrahlung surface brightness is derived; ii) contrary to the results obtained earlier for the Galactic supernova remnant (SNR) samples, our results show that the updated sample of Galactic PNe does not severely suffer from volume selection effect - Malmquist bias (same as for the extragalactic SNR samples) and; iii) we conclude that the empirical S − D relation for PNe derived in this paper is not useful for valid determination of distances for all observed PNe with unknown distances. .
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/b5cbce71c4aa43ebb6c2422b280a4a18 Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF