Jurijs FRANCMANIS

(20.03.1939-20.07.1998)

Professor Jurijs FRANCMANIS Astronomical Institute, University of Latvia Rainis bulv. 19 Riga, LV 1586 Latvia

Born: March 20, 1939, Riga, Latvia

Dead: July 20, 1998

Interests:

• Stellar Structure and Evolution - Asymptotic Giant Branch
• Carbon Stars
• Close Binaries
• Magellanic Clouds

Languages: English, Russian, Polish, Latvian

Education:

• University of Latvia (Faculty of Physics and Mathematics), 1961
• Dr.phys. (Candidate of Science in former USSR, Ph.D. in Western countries), Moscow State University, 1968
• Dr.habil.phys. (Doctor of Science in former USSR), Moscow State University, 1991

Experience:

• Researcher, Astronomical Observatory, Latvian University, 1961-1964
• Postgraduate, Astronomical Institute (former Astronomical Council), Academy of Sciences, Moscow, 1964-1967
• Researcher, Senior Researcher, Radioastrophysical Observatory, Latvian Academy of Sciences, 1967 -

Honours and Awards:

• Corresponding Member, Latvian Academy of Sciences, 1994
• The Latvian Academy of Sciences Presidium Third Award, 1989

Professional Activities and Memberships:

• Member, Editorial Board, International journals "Baltic Astronomy", "Astronomical Calendar"
• Member, International Astronomical Union, Commission 35 (Stellar Constitution) and Commission 42 (Close Binary Stars)
• Member, European Astronomical Society
• Member, Eurasian Astronomical Society
• Member, Latvian Astronomical Society

Recent/Representative Publications:

• Frantsman Ju. L. The evolution of the Magellanic Clouds. I. The ages of the globular clusters, Astrophysics and Space Sci., 1988, vol.145, pp. 251-261.
• Frantsman Ju. L. The evolution of the Magellanic Clouds. II. Star formation and chemical composition, Astrophysics and Space Sci., 1988, vol.145, pp. 287-292.
• Frantsman Ju. L. Can the degenerate carbon-oxygen core of a single star reach the Chandrasekhar limit?, Sov.Astron., 1988, vol.32, 4, pp. 389-392.
• Frantsman Yu. L., The asymptotic branch of giants in the Magellanic Clouds, Proceedings of the Sixth Soviet-Finnish Astronomical Meeting, ed.: U.Hanni, J.Tuominen, Tallinn, 1988, pp. 117-121.
• Frantsman Yu.L., Eglitis I.E. The C/O ratio in N type carbon stars: the observations and the theory, Sov.Astron.Lett. 1988, vol.14, 2, pp.109-111.
• Frantsman Ju. L. The radioactive isotope 26Al I in the interstellar medium, Sov.Astron., 1988, vol. 33, 5, p.565567.
• Frantsman Yu. L. The ratio of the numbers of carbon stars to M stars in galaxies, Proc.of the 106th Coll. of the IAU, ed.: H.R.Johnson, B.Zuckerman, Cambridge Univ. Press, 1989, p. 51.
• Frantsman Yu. L. The evolution of stars on the AGB: the mass loss intensity and the formation of carbon stars, Proc. of the 106th Coll. of the IAU, ed.: H.R.Johnson, B.Zuckerman, Cambridge Univ.Press, 1989, p.224.
• Frantsman Ju. L. 1990, The binary nature of s-process enriched stars" In: Nordic-Baltic Astronomy Meeting, ed.: C.-I. Lagerkvist, D.Kiselman, M.Lindgren, Uppsala Univ. Reprocentralen HSC, pp. 115-118.
• Frantsman Ju. L. Chemical composition variations in the Galaxy, Proc. of the IAU Coll. Nr 150 "Astrochemistry of Cosmic Phenomena", ed.: P.D.Cingh, Brasil, 1991, pp. 327-328.
• Frantsman Ju. L. Radioactive isotope 26Al in the interstellar matter (resulting from a mass loss by AGB stars), Proc. of the IAU Coll. Nr I50 "Astrochemistry of Cosmic Phenomena", 1991, ed. P.D.Singh, Brasil, p. 411-412.
• J.Frantsman. S-process enriched main sequence stars as a products of the evolution of binaries, Communications in Astroseismology, Vien, 1992, 43, p. 10A.
• Yu. L. Frantsman. Formation of stars with an excess of s-process elements (barium stars) in the evolution of close binary systems", Soviet Astronomy, 1992, vol. 36, 2,
• pp.155 -164.
• Frantsman Ju. Simulated s-process enriched star populations as a products of the evolution of binaries, Publ. of the Astronomical Society of the Pacific, Conf. series, 1993, vol. 38, pp. 236-238.
• Frantsman Ju., Eglitis I. The rigin of carbon stars with high C/O in the atmospheres, Astron. Zh., 1993, vol.70, 6, pp.1228-1236.
• Frantsman J.L., Stellar evolution on the asymptotic giant branch: some actualities, Baltic Astronomy, 1994, vol.3, 1/2, pp.76-84.
• Yu.L.Frantsman,N.A.Pilyeva, High luminosity carbon stars in the Early Asymptotic Giant Branch phase, Astronomy Report, 1995, vol.39, 6, pp.749-754.
• Frantsman Ju. L., Pilyeva N. A. Evolutionary status of faint carbon stars in the Magellanic Clouds, Baltic Astronomy, 1995,vol.4, pp.39-47.
• Frantsman Ju.L., Shmeld I., Two different stellar populations in the Large Magellanic Cloud?, IAU Symp.164 "Stellar Populations", ed.: P.C.van der Kruit, G.Gilmore, Kluver Acad.Publ., Dordr./Boston/London, 1995, p.415.
• Ju.L.Frantsman. The effect of mass loss intensity on the characteristics of chemically peculiar cool stars, Astron.Soc. of the Pacific, Conf. series, vol.109, "Cool Stars, Stellar Systems, and the Sun", ed.: R.Pappavicini, A.K.Dupree, 1996, pp.523-524
• Ju.L.Frantsman. Faint carbon stars from the evolution of close binaries, Astronomy and Astrophysics, 1997, vol.319, pp.511-514.

Research Projects:

• Head of Project. Nonstationary Phenomena and Processes in the Cosmical Objects (Stars on the Late Stages of Evolution, Circumstellar Envelopes, Sun. Latvian Council of Science, 1994-1996
• Head of Project. The Investigation of the Processes in the Late Evolutionary Stage Stars, Interstellar Medium and the Sun: Nonstationary Phenomena and Changes of Chemical Abundances. Latvian Council of Science, 1997-2000

Last update 04.09.1998