EDP Sciences
Free access
Volume 393, Number 3, October III 2002
Page(s) L65 - L68
Section Letters
DOI http://dx.doi.org/10.1051/0004-6361:20021207

A&A 393, L65-L68 (2002)
DOI: 10.1051/0004-6361:20021207


An H $\alpha$ nebula possibly associated with the central X-ray source in the G 266.2-1.2 supernova remnant

A. Pellizzoni, S. Mereghetti and A. De Luca

Istituto di Astrofisica Spaziale e Fisica Cosmica - Sezione di Milano "G. Occhialini" - CNR, via Bassini 15, 20133 Milano, Italy

(Received 17 July 2002 / Accepted 20 August 2002 )

We report the discovery of a small H $\alpha$ nebula positionally coincident with the candidate neutron star AX J0851.9-4617.4  located at the center of the supernova remnant G 266.2-1.2. The nebula has a roughly circular shape with a diameter of ~6 '' and a flux of ~ 10-2 photons cm -2 s -1 in the H $\alpha$ line. Considering the uncertainties in the distance and energy output from the putative neutron star, we find that such a flux can be explained either in a bow-shock model or assuming that the nebular emission is due to photo-ionization and heating of the ambient gas.

Key words: stars: individual: AX J0851.9-4617.4  -- stars: neutron -- HII regions

Offprint request: A. Pellizzoni, alberto@mi.iasf.cnr.it

© ESO 2002