On the recovery of the old nova IM Normae 1920

Astronomy and Astrophysics – Astronomy

Scientific paper

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Light Curve, Novae, Stellar Spectra, Stellar Spectrophotometry, X Ray Sources, Spectral Resolution, Stellar Luminosity

Scientific paper

Spectra of two faint stars (B approximately 19.6 mag) at the position of the old nova IM Nor 1920 indicate that neither object is a likely candidate for the nova remnant. It is suggested instead that either star could be: (1) a late-type companion of the nova, or (2) not physically associated with the nova. Spectrophotometry sets a limit to the post-outburst range of the nova of no less than 11.7 mag, approximately. The possible association of IM Nor with an X-ray source is no longer consistent with the improved position of the latter.

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