Extended Data Fig. 6: Optical spectrum of NGC 7320a.
From: A 0.6 Mpc H i structure associated with Stephan’s Quintet
Optical spectrum of NGC 7320a obtained at Lijiang 2.4 meter telescope. The vertical dotted lines mark the positions of corresponding emission/absorption lines redshifted according to the best-fit redshift z = 0.02243 (v = 6729 km s−1).
