THE STRUCTURE OF THE REMNANT OF HR DEL

A J SLAVIN, T J OBRIEN, J S DUNLOP

Research output: Contribution to journalLetterpeer-review

Abstract / Description of output

We present narrow-band [O III] and Halpha/[N II] CCD images of Nova HR Delphini 1967. The oval shape of the remnant is clearly apparent in the raw CCD images, although it is somewhat more extended than in the previously published photographic image due to its continuing expansion. Detailed structure within the nebula is investigated using both the maximum entropy method and CLEAN to enhance the image resolution by deconvolution of the point spread function. In the light of [O III] the remnant is revealed to possess a bipolar morphology, in which the emission-line regions on either side of the central object may be identified with polar 'blobs', a common feature of other more extended nova shells. In contrast, the remnant appears more 'ring-like' in Halpha/[N II] emission. We conclude that the remnant is prolate and that the morphology may be the result of the common-envelope phase during the nova outburst. From our deconvolved images we derive an estimated distance to HR Del of 1.1 +/- 0.1 kpc.

Original languageEnglish
Pages (from-to)L55-L59
Number of pages5
JournalMonthly Notices of the Royal Astronomical Society
Volume266
Issue number4
Publication statusPublished - 15 Feb 1994

Fingerprint

Dive into the research topics of 'THE STRUCTURE OF THE REMNANT OF HR DEL'. Together they form a unique fingerprint.

Cite this