April rho Cygnids and comet C/1917 F1 Mellish

摘要

We have examined the recently-established April rho Cygnids meteor shower (ARC, IAU#348). The ARC was discovered by the Canadian Meteor Orbit Radar survey (Brown et al., 2010), and later confirmed by video observations made by the Cameras for Allsky Meteor Surveillance project in America (Phillips et al., 2011). As reported by Neslusan and Hajdukova (2014c), the shower could be part of a broader meteor shower complex associated with the comet C/1917 F1 (Mellish). According to their model of the meteoroid stream originating from the comet, one of the filaments (F1) approximately corresponds to the ARC. The present study is based on an analysis of the orbital parameters of the ARC from the EDMOND (Kornos et al., 2014a), CAMS (Phillips et al., 2011), and SonotaCo (SonotaCo, 2009) databases. We followed dynamical evolutions of simulated meteoroid streams modeled from observational data. We found that the April rho Cygnids may consist of both short and long-period components. However, it cannot be excluded that the meteors investigated belong to two different meteor showers situated in the same phase space. It was not possible to make a definitive conclusion concerning their relation to the proposed parent comet. (C) 2015 Elsevier Ltd. All rights reserved.