Speaker
Mr
BIJU KG
(WMO Arts \& Science college, Muttil, Kerala, India-673122)
Description
We present the results of our radio, optical and infrared studies of Zwicky's Nonet, which is a compact group of nine merging galaxies, at the centre of the rich galaxy cluster A 407. Here, all the nine galaxies are packed within a radius of only 25 kpc, with the smallest projected separation between galaxy pair combinations is about 5 kpc. This group is found to be hosting a radio source 4C 35.06, which is having helically twisted and kinked radio jets and diffuse outer lobes, revealed by the Giant Meterwave Radio Telescope (GMRT) observations at 610, 235 and 150 MHz frequencies. The host of the radio source is suggested to be a low luminosity galaxy, which might have stripped of its stars in multiple tidal encounters. A consistently observed low-value of the estimated black hole mass from the K-band magnitude compared to that from stellar velocity dispersion for all the galaxies in the sample is pointing to this possibility. Optical and infrared studies show that all the galaxies in the group are of low-excitation class. We have acquired data from 3.6-m Devasthal Optical Telescope (DOT) via some deep observations for this exotic source. Preliminary results are very promising. We will present the multi-wavelength properties of Zwicky's Nonet and discuss the results from the 3.6-m DOT.
Primary author
Mr
BIJU KG
(WMO Arts \& Science college, Muttil, Kerala, India-673122)
Co-authors
Dr
Ishwara-Chandra CH
(National Centre for Radio Astrophysics, TIFR, P.B No.3,Ganeshkhind, Pune-411 007, India)
Dr
Joe Jacob
(Newmann College, Thodupuzha, Kerala, India, 685584)
Prof.
Joydeep Bagchi
(Inter University Centre for Astronomy and Astrophysics(IUCAA), P.B No.7, Ganeshkhind, Pune-411 007, India)
Mr
Pratik Dabhade
(Inter University Centre for Astronomy and Astrophysics(IUCAA), P.B No.7, Ganeshkhind, Pune-411 007, India)
Dr
Santosh JOSHI
(ARIES)
Mr
Shishir Sankhyayan
(Indian Institute of Science Education and Research (IISER), Pune 411008, India)
