| Abstract: NGC 6872, also known as the Condor galaxy, is a large barred spiral galaxy in the Pavo constellation. It is of the type SBb pec, located at a distance of 65 Mpc from the Earth. It is in close interaction with IC 4970, which is a small unbarred lenticular galaxy. We present our analysis of this system using archival data obtained from the UltraViolet Imaging Telescope (UVIT) aboard the AstroSat space observatory. The data analysed were obtained in six filters of the UVIT, namely - F154W, F169M, F172M in the FUV and N219M, N245M and N279N in the NUV channel. We present the differences between images of the galaxy system in the FUV, NUV, optical and IR filters, and study the underlying reasons.
Using photometry, we present the star formation rates (SFRs) in the large number of star forming regions identified in the galaxy. We also present the spectral energy distributions (SED) of the galaxies, and use it to infer SFR, specific SFR, the stellar mass and the dust mass of the entire galaxy and its neighbour. Finally, we investigate whether the interaction between NGC 7872 and IC 4790 is responsible for triggering or quenching star formation in the larger galaxy, or if it has no major effect on it. |
