Study of A1367 Cluster by Curve Fitting Variations

We investigate the possible gain spectrum of the A1367 cluster or more commonly known as the Leo cluster using different polynomial fitting techniques in DRAWSPEC. For one of the aspects of the research on the possible mass of dark matter in the Leo cluster, the mass of neutral hydrogen (M_HI) is to be determined using gain analysis in the DRAWSPEC programme, prior to using the virialized mass of the Leo cluster to determine the mass of dark matter in the cluster. This investigation is significant because by using different polynomial fittings, one set of data could yield different gain, thus providing different M_HI, ultimately affecting the calculation of mass of dark matter in a cluster. In this paper, we present a comparison between different gain spectrum and using different polynomial fittings and we conclude that the result yields different M_HI by using different curve fitting techniques.