Too Observations of the Recurrent Nova im Normae in Outburst

Details Too Observations of the Recurrent Nova im Normae in Outburst Too Observations of the Recurrent Nova im Normae in Outburst

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop.1045s&link_type=abstract

Chandra Proposal ID #03308072

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Chandra Proposal Id #03308072

Scientific paper

IM Nor is a Recurrent Nova (RN) discovered in outburst on 10 Jan 02. It rose to V~7.7 on 16 Jan suggesting that it was caught at the beginning of its outburst. Based on its first outburst in 1920 (near maximum for ~ 100 days), it is one of only two SLOW RN. While CHANDRA observed another RN with ACIS-S (CI Aql in 2000), the resulting spectrum was weak. However, CI Aql was fainter at maximum and the spectrum was taken after it had returned to quiescence. RN may be progenitors of SN Ia suggesting that we need to obtain as much information as we can about their properties. We, therefore, propose a 5 ksec ACIS-S observation to see if it is bright in X-rays followed by a 25 kse c HRC-S+LETG spectrum to study the ejecta. The ACIS-S spectrum will show either emission lines from a hot gas (seen in V382 Vul) or a hot continuum from a white dwarf atmosphere (V1494 Aql). Neither of these resemble the spectrum of a dwarf nova (WZ Sge).

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