Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aj....115.1433e&link_type=abstract
The Astronomical Journal, Volume 115, Issue 4, pp. 1433-1437.
Astronomy and Astrophysics
Astronomy
11
Galaxies: Individual: Ngc 4485/4490, Galaxies: Interactions, Stars: Formation
Scientific paper
NGC 4485 and NGC 4490 are closely interacting spiral galaxies in the NGC 4631 Group, separated by a projected distance of 7.7 kpc. Images in the B and I bands were obtained with the Burrell Schmidt telescope at Kitt Peak National Observatory in order to study star-forming regions in their tidal features, including a previously undetected faint tail whose color matches that of the outer disk in NGC 4490. A comparison of the tidal morphology with published simulations suggests that this is a prograde encounter with perigalacticon about 4 x 10^8 yr ago. This time is approximately the age of the youngest regions in the tail, based on a comparison of observed B - I colors with evolutionary models. Calculations of the Q instability parameter using a rotation curve derived from published H i observations support the conclusion that the tail is currently stable against star formation.
Chromey Frederick R.
Elmegreen Debra Meloy
Knowles Benjamin D.
Wittenmyer Robert A.
No associations
LandOfFree
Observations of a Tidal Tail in the Interacting Galaxies NGC 4485/4490 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Observations of a Tidal Tail in the Interacting Galaxies NGC 4485/4490, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observations of a Tidal Tail in the Interacting Galaxies NGC 4485/4490 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1602339