NGC 2642: Erwin et al. (2004). Bar measurements are from a NICMOS3 F160W
image, with L_bar_ for inner bar from size of the nuclear ring and
L_bar_ for outer bar from size of the inner ring/spiral arms encircling
Bar is visible in both the ellipse fits and the K_S_image.
March 13/14, 1980
103aO + GG385
The bar in NGC 2642 is strong, and the
inner arms spring from its ends, as in NGC 1300.
The arms branch into multiple fragments soon
Two weak, straight dust lanes exist along the
outside of the smooth bar, as usual in the direction
that leads the rotation.
The arms are filled with bright HII regions,
the largest of which resolve at the 1.5" level. The
redshift of NGC 2642 is v_o = 4262 km/s.
Non-interacting pair with anonymous Sm? at 3.2 arcmin
Small, very bright nucleus in weak bar: 0.55 arcmin x 0.14 arcmin,
(r): 0.65 arcmin x 0.55 arcmin. 4 or 5 knotty, filamentary arms.
Non-interacting pair with anonymous Sm? at 3.2 arcmin.
B(0) = 13.59 (Source C, w = 0.45).
Interesting object. The spiral arm departs from the bar and, inside
of the ring, intersects it. In the west part of the bar there is a
star (?) 15.5 mag. Type: Sand - SBb, vB - S(B)bf. Redshift: +4217.
Further, Pettit gives 15.1 mag and Cp' = 1.12 for the nucleus.