The structure of a recent nova shell as observed by ALMA

Marcos P. Diaz, Zulema Abraham, Valério A.R.M. Ribeiro, Pedro P.B. Beaklini, Larissa Takeda

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


High resolution ALMA observations of the recent (2.52 yr old) shell of Nova V5668 Sgr (2015) show a highly structured ionized gas distribution with small (1015 cm) clumps. These are the smallest structures ever observed in the remnant of a stellar thermonuclear explosion. No extended contiguous emission could be found above the 2.5σ level in our data, while the peak hydrogen densities in the clumps reach 106 cm-3. The millimetre continuum image suggests that large scale structures previously distinguished in other recent nova shells may result from the distribution of bright unresolved condensations.

Original languageEnglish
Pages (from-to)L54-L57
JournalMonthly Notices of the Royal Astronomical Society: Letters
Issue number1
Publication statusPublished - 2018

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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