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Astron. Astrophys. 356, 274-278 (2000)


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G247.8+4.9, a nitrogen-dominated nebula at the outskirts of Puppis

C. Zanin 1,2 and F. Kerber 3

1 Institut für Astronomie der Leopold-Franzens-Universität Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria (http://astro.uibk.ac.at )
2 Dipartimento di Astronomia, Universitá di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy
3 Space Telescope European Coordinating Facility, ESO, Karl-Schwarzschild-Strasse 2, 85748 Garching, Germany

Received 24 August 1999 / Accepted 4 February 2000

Abstract

Spectra of the emission-line nebula G247.8+4.9 are presented in which an outstandingly high intensity of the lines [N II ][FORMULA]6548,6583 Å relative to H[FORMULA] is observed. From the spectra we obtain E(B-V)[FORMULA] mag; with this value we deduce a lower limit for the distance of 6 kpc. The nebula appears to be located inside a cavity in the IRAS 60 and 100 µm maps. This cavity could be a wind blown bubble formed by the progenitor star of the object. The most likely physical interpretation of the nebula is a supernova remnant, although other possibilities are discussed too.

Key words: ISM: supernova remnants – ISM: individual objects: G247.8+4.9

Send offprint requests to: C. Zanin

© European Southern Observatory (ESO) 2000

Online publication: March 28, 2000

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