Observations of Nova Oph 2016 in ASAS-SN's Recent Expansion to the Galactic Bulge
ATel #8841; L. Chomiuk, J. Strader (Michigan State), K. Z. Stanek, C. S. Kochanek, T. W.-S. Holoien (Ohio State), B. J. Shappee (Hubble Fellow, Carnegie Observatories), J. L. Prieto (Diego Portales; MAS), Subo Dong (KIAA-PKU)
on 18 Mar 2016; 17:53 UT
Credential Certification: Laura Chomiuk (chomiuk@pa.msu.edu)
The ongoing All Sky Automated Survey for SuperNovae (ASAS-SN or "Assassin") has recently expanded to regularly monitor the Southern Galactic plane and bulge. With data from the quadruple 14-cm "Cassius"
telescope in Cerro Tololo, Chile, we detected the recent Nova Oph 2016 (PNV 17355050-2934240; ATel #8809, #8817, CBET #4265) before discovery, and are continuing to monitor the event.
On 2016 Mar 10.85 (one day before discovery; CBET #4265), ASAS-SN measured the nova at V = 12.5 mag. This measurement is consistent with the fact that the nova was saturated in the OGLE-IV images at this time (ATEL #8811). ASAS-SN did not discover the nova in this image, because it was the first ASAS-SN image obtained on this region.
Subsequent photometry measures V = 11.5 mag on 2016 Mar 15.30, and V = 12.0 mag on 2016 Mar 16.33. Monitoring is ongoing and will track the light curve decline down to V ~ 17 mag at 2--3 day cadence.
We thank LCOGT and its staff for their continued support of ASAS-SN. ASAS-SN is supported by NSF grant AST-1515927, the Center for Cosmology and AstroParticle Physics (CCAPP) at OSU, the Mt. Cuba Astronomical Foundation, George Skestos, and the Robert Martin Ayers Sciences Fund. For more information about the ASAS-SN project, see the ASAS-SN Homepage and the list of all ASAS-SN transients.
