Astronomy and Astrophysics – Astronomy
Scientific paper
May 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000dda....31.1003b&link_type=abstract
American Astronomical Society, DDA Meeting #31, #10.03; Bulletin of the American Astronomical Society, Vol. 32, p.866
Astronomy and Astrophysics
Astronomy
Scientific paper
Ideas of nuclear activity mechanisms in disk galaxies range from internal bars to external tidal perturbation by passing companions. The Byrd et al. (1986, 1987) simulation survey determined the tidal perturbation to induce activity in the nucleus. We compare these simulations and theory to Markarian activity in Karachentsev's (1983) disk galaxy pairs. For double galaxies, we derive for the tidal hypothesis that: (1) There should be an excess of pairs where both are active over pairs with one active (2) Nuclear activity should be preferentially excluded from pairs which are unequal and favorably distributed to pairs where members are equal. (3) Pairs where one or both members are active should have a smaller velocity difference times separation than if both are normal. (4) The average size of pair members to create activity can be smaller if the pair members are equal in size than if they are unequal. These tidal traits are seen in Karachentsev Markarian pairs where both are S type. Observational surveys have raised doubt as to the tidal explanation of Seyfert type activity in galaxies with some suggesting a weak or nonexistent correlation between tidal perturbation and activity compared to a normal sample. The simulations show a several hundred million year delay in the appearance of activity after perturbation and a similar length duration which can explain the these null results. This work was supported by the Academy of Finland. GB expresses gratitude for the hospitality of Tuorla Observatory in Finland during a winter/spring 1999 visit.
Byrd Gene Gilbert
Valtonen Mauri
No associations
LandOfFree
Tidal Perturbation and Markarian Activity in Disk Galaxy Pairs 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 Tidal Perturbation and Markarian Activity in Disk Galaxy Pairs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tidal Perturbation and Markarian Activity in Disk Galaxy Pairs will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1128754