Updated radio Σ - D relation for galactic supernova remnants - II
| Autor: | Vukotić B., ciprijanović A., Vučetić M.M., Onić D., Urošević D. |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Serbian Astronomical Journal, Vol 2019, Iss 199, Pp 23-37 (2019) |
| Druh dokumentu: | article |
| ISSN: | 1450-698X 1820-9289 |
| DOI: | 10.2298/SAJ1999023V |
| Popis: | In this paper we present the updated empirical radio surface- brightness-to-diameter (Σ-D) relation for Galactic supernova remnants (SNRs) calibrated using 110 SNRs with reliable distances. We apply orthogonal fitting procedure and kernel density smoothing in the Σ ¡ D plane and compare the results with the latest theoretical Σ - D relations derived from simulations of radio evolution of SNRs. We argue that the best agreement between the empirical and simulated Σ ¡ D relations is achieved if the mixed-morphology SNRs and SNRs of both, low brightness and small diameter, are filtered out from the calibration sample. The distances to 5 newly discovered remnants and 27 new candidates for shell SNRs are estimated from our full and filtered calibration samples. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 176005: Emission nebulae: structure and evolution] |
| Databáze: | Directory of Open Access Journals |
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