Gemini J -band observations of RX J0806.4–4123

B. Posselt, K. L. Luhman

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2 Scopus citations


The detection of near-infrared (NIR) excess at the position of a star can indicate either a substellar companion or a disk around the respective star. In this work we probed whether a 2.5σ H -band flux enhancement at the position of the isolated neutron star RX J0806.4–4123 can be confirmed at another NIR wavelength. We observed RXJ0806.4–4123 in the J -band with Gemini South equipped with FLAMINGOS-2. There was no significant detection of a J -band source at the neutron star position. However, similarly to the H -band we found a very faint (1.4σ) flux enhancement with a nominal magnitude of J = 24.8 ± 0.5. The overall NIR-detection significance is 3.1σ. If real, this emission is too bright to come from the neutron star alone. Deeper near-infrared observations are necessary to confirm or refute the potential NIR excess. The confirmation of such NIR excess could imply that there is a substellar companion or a disk around RXJ0806.4–4123.

Original languageEnglish (US)
Pages (from-to)576-580
Number of pages5
JournalAstronomische Nachrichten
Issue number6
StatePublished - Jun 1 2016

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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