BVRI photometric evolution of the very fast Nova Ophiuchi 2010 N.1 = V2673 Oph

TL;DR

This paper presents detailed BVRI photometric observations of the very fast FeII-class Nova Ophiuchi 2010 N.1, analyzing its rapid brightness evolution, color changes, reddening, and distance estimation.

Contribution

It provides the first comprehensive BVRI photometric evolution of this nova, including its rapid rise, decline, and derived physical parameters.

Findings

Maximum brightness reached at V=8.5 mag

Decline times t2(V)=10.0 days, t3(V)=23.5 days

Reddening E(B-V)=0.7 and distance 7.4 kpc

Abstract

The very fast, FeII-class Nova Ophiuchi 2010 N.1 rised rapidly to maximum brightness (the last 2.2 mag in V band were covered in 3.4 days), maximum that was reached on Jan. 18.3, 2010 at V=8.5, B-V=+0.95, V-Rc=+0.75, and V-Ic=+1.50. The rapid and smooth decline was charaterized by t2(V)=10.0 and t3(V)=23.5 days. The reddening affecting the nova was E(B-V)=0.7 and its distance d=7.4 kpc, for an height above the galactic plane of z=0.6 kpc.