A single radio-emitting nucleus in the dual AGN candidate NGC 5515

K. É Gabányi, S. Frey, T. Xiao, Z. Paragi, T. An, E. Kun, L. Á Gergely

Research output: Contribution to journalArticle

11 Citations (Scopus)


The Seyfert galaxy NGC 5515 has double-peaked narrow-line emission in its optical spectrum, and it has been suggested that this could indicate that it has two active nuclei. We observed the source with high-resolution very long baseline interferometry at two radio frequencies, reduced archival Very Large Array data, and re-analysed its optical spectrum. We detected a single, compact radio source at the position of NGC 5515, with no additional radio emission in its vicinity. The optical spectrum of the source shows that the blue and red components of the double-peaked lines have very similar characteristics. While we cannot rule out unambiguously thatNGC5515 harbours a dualAGN, the assumption of a singleAGNprovides amore plausible explanation for the radio observations and the optical spectrum.

Original languageEnglish
Article numberstu1234
Pages (from-to)1509-1514
Number of pages6
JournalMonthly Notices of the Royal Astronomical Society
Issue number2
Publication statusPublished - Apr 2014


  • Galaxies: individual: NGC 5515
  • Galaxies: seyfert
  • Radio continuum: galaxies
  • Techniques: interferometric
  • Techniques: spectroscopic

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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