Abstract
We have investigated the central regions of the galaxies in the NGC 3169/NGC 3166/NGC 3156 group with the multipupil fiber spectrograph of the 6-m telescope; the first (central) galaxy in the group is a spiral (Sa) one and the other two galaxies are lenticular ones. The group is known to have an extended HI cloud with a size of more than 100 kpc that is associated in its position, orientation, and rotation with the central galaxy NGC 3169. The mean age of the stellar populations in the centers of all three galaxies has been found to be approximately the same, ∼1 Gyr. Since the galaxies are early-type ones and since NGC 3166 and NGC 3156 show no global star formation, we are dealing here with a synchronous star formation burst in the centers of all three galaxies.
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References
V. L. Afanasiev, S. N. Dodonov, S. V. Drabek, and V. V. Vlasyuk, MPFS: User Manual (SAO RAN, Nizhnii Arkhyz, 1996) [in Russian].
V. L. Afanasiev, S. N. Dodonov, and A. V. Moiseev, Stellar Dynamics: from Classic to Modern, Ed. by L. P. Osipkov and I. I. Nikiforov (St. Petersburg, 2001), p. 103.
R. Bacon, G. Adam, A. Baranne, et al., Astron. Astrophys., Suppl. Ser. 113, 347 (1995).
I. S. Balinskaya and O. K. Sil’chenko, Preprint No. 90, SAO RAN (Special Astrophysical Observatory, Russ. Acad. Sci., 1992).
A. Burgess, Mon. Not. R. Astron. Soc. 118, 477 (1958).
P. B. Eskridge, J. A. Frogel, R. W. Pogge, et al., Astrophys. J., Suppl. Ser. 143, 73 (2002).
G. Gilmore and R. F. G. Wyse, Astrophys. J. 367, L55 (1991).
M. P. Haynes, Astron. J. 86, 1126 (1981).
L. C. Ho, A. V. Filippenko, and W. L. Sargent, Astrophys. J., Suppl. Ser. 112, 315 (1997).
I. D. Karachentsev, Astron. J. 129, 178 (2005).
A. Mahdavi, H. Bohringer, M. J. Geller, and M. Ramella, Astrophys. J. 534, 114 (2000).
G. Marconi, F. Matteucci, and M. Tosi, Mon. Not. R. Astron. Soc. 270, 35 (1994).
F. Matteucci, Astron. Astrophys. 288, 57 (1994).
A. V. Moiseev and V. V. Mustsevoi, Pis’ma Astron. Zh. 26, 657 (2000) [Astron. Lett. 26, 565 (2000)].
J. S. Mulchaey, D. S. Davis, R. F. Mushotsky, and D. Burstein, Astrophys. J., Suppl. Ser. 145, 39 (2003).
S. E. Schneider, Astrophys. J. 288, L33 (1985).
S. E. Schneider, Astrophys. J. 343, 94 (1989).
O. K. Sil’chenko, Pis’ma Astron. Zh. 19, 693 (1993) [Astron. Lett. 19, 279 (1993)].
O. K. Sil’chenko, Astron. Zh. 71, 7 (1994) [Astron. Rep. 38, 3 (1994)].
O. K. Sil’chenko, Astrophys. J. 641, 229 (2006).
O. K. Sil’chenko and V. L. Afanasiev, Astron. Astrophys. 385, 1 (2002).
O. K. Sil’chenko, A. V. Moiseev, V. L. Afanasiev, et al., Astrophys. J. 591, 185 (2003).
G. Stasinska and I. Sodré, Jr., Astron. Astrophys. 374, 919 (2001).
D. Thomas, C. Maraston, and R. Bender, Mon. Not. R. Astron. Soc. 339, 897 (2003).
J. L. Tonry, A. Dressler, J. P. Blakeslee, et al., Astrophys. J. 546, 681 (2001).
S. C. Trager, S. M. Faber, G. Worthey, and J. J. Gonzàlez, Astron. J. 119, 1645 (2000).
H. D. Tran, Z. Tsvetanov, H. C. Ford, et al., Astron. J. 121, 2928 (2001).
V. V. Vlasyuk, Astrofiz. Issled. (Izv. SAO RAN) 36, 107 (1993).
G. Worthey, Astrophys. J., Suppl. Ser. 95, 107 (1994).
G. Worthey, S. M. Faber, J. J. Gonzalez, and D. Burstein, Astrophys. J., Suppl. Ser. 94, 687 (1994).
A. V. Zasov and O. K. Sil’chenko, Astron. Zh. 60, 1063 (1983) [Sov. Astron. 27, 616 (1983)].
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Original Russian Text © O.K. Sil’chenko, V.L. Afanasiev, 2006, published in Pis’ma v Astronomicheskiĭ Zhurnal, 2006, Vol. 32, No. 8, pp. 592–603.
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Sil’chenko, O.K., Afanasiev, V.L. Central regions of the early-type galaxies in the NGC 3169 group. Astron. Lett. 32, 534–544 (2006). https://doi.org/10.1134/S1063773706080044
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DOI: https://doi.org/10.1134/S1063773706080044