Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...469..131e&link_type=abstract
Astrophysical Journal v.469, p.131
Astronomy and Astrophysics
Astronomy
12
Galaxies: Individual Ngc Number: Ngc 1300, Galaxies: Kinematics And Dynamics, Galaxies: Photometry, Galaxies: Spiral, Galaxies: Structure, Stars: Formation
Scientific paper
Surface photometry of the barred galaxy NGC 1300 in B and I bands reveals an outer pseudo-ring with star formation knots located at the positions of 10^8^ M_sun_ H I clouds previously mapped by M. England with the VLA. The age of the ring from the B - I colors is estimated to be ~10^9^ yr, and the age of the star formation knots is estimated to be 2 x 10^7^ yr. Stability considerations suggest that the H I clouds formed by gravitational condensation along the ring periphery. If the outer extent of the ring is at the outer Lindblad resonance, then the bar ends slightly outside the inner 4:1 resonance and corotation is at the position of the break and dust lane crossing midway out in the spiral arms.
Chromey Frederick R.
Elmegreen Bruce G.
Elmegreen Debra Meloy
Hasselbacher David Alan
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