Publications in 1997
The authors marked by an asterix (*) do not belong to the staff of Tuorla observatory.

1997

*Aller, M.F., *Marscher, A.P., *Hartman, R.C., *Aller, H.D., *Aller, M.C., *Balonek, T.J., *Begelman, M.C., *Chiaberge, M., *Clements, S.D., *Collmar, W., *De Francesco, G., *Gear, W.K., *Georganopoulos, M., *Ghisellini, G., *Glass, I.S., *Gonzalez-Perez, J.N., Heinämäki, P., *Herter, M., *Hooper, E.J., *Hughes, P.A., *Johnson, W.N., Katajainen, S., *Kidger, M.R., *Kraus, A., *Lanteri, L., *Lawrence, G.F., *Lichti, G.G., *Lin, Y.C., *Madejski, G.M., *McNaron-Brown, K., *Moore, E.M., *Mukherjee, R. Mair, A.D., Nilsson, K., *Peila, A., *Pierkowski, D.B., *Pohl, M., Pursimo, T., *Raiteri, C.M., *Reich, W., *Robson, E.I., Sillanpää, A., *Sikora, M., *Smith, A.G., *Steppe, H., *Stevens, J., Takalo, L.O., *Teräsranta, H., *Tornikoski, M., Valtaoja, E., *von Montigny, C., *Villata, M., *Wagner, S., *Wichmann, R., Witzel, A. 1997: Radio to gamma-ray observations of 3C 454.3: 1993-1995. - Proceedings of the Fourth Compton Symposium, eds. C.D. Dermer, M.S. Strickman, J.D. Kurfess, AIP Conference Proceedings 410, Woodbury, New York, p. 1423.

*Berdyugin, A., Teerikorpi, P. 1997: Interstellar polarization at high galactic latitudes from distant stars II. Evidence for depolarization starting at Z ÷ 600 pc. - Astronomy and Astrophysics 318: 37-39

*Bloom, S.D., *Hartman, R.C., *Teräsranta, H., *Tornikoski, M., Valtaoja, E. 1997: Possible new identifications for EGRET sources. - Astrophysical Journal 488: L23.

*Czerny, B. and Lehto, H.J. 1997: Testing the X-ray Variability of Active Galactic Nuclei with nonlinear prediction method. - Monthly Notices of Royal Astronomical Society 285: 365-373.

*De Diego, J.A., *Kidger, M.R., *Gonz les-P‚rez, J.N. and Lehto, H.J. 1997: Rapid Infrared Spectral Variability of 3C 66A in outburst. - Astronomy & Astrophysics 318: 331-336.

*Dultzin-Hacyan, D., Takalo, L.O., *Benitez, E., Sillanpää, A., Pursimo, T., Lehto, H., *de Diego, J.A. 1997: Microvariability in OJ 287 during a flare - Rev.Mex Astronomy & Astrophysics 33: 17.

Ekholm, T., Teerikorpi, P. 1997: On the derivation of the Tully-Fisher relations II: field galaxies, the inverse slope and the Hubble constant. - Astronomy and Astrophysics 325: 33-40

*Falomo, R., Kotilainen, J., Sillanpää, A., Pursimo, T., Takalo, L.O., *Heidt, J. 1997: On the galaxy surrounding the BL Lac object MS 0205+35 - Astronomy & Astrophysics 321: 374

Flynn, C. and *Morell, O. 1997: Metallicities and kinematics of G and K dwarfs - Monthly Notices of Royal Astronomical Societ 286: 617

*Gould, A., *Bahcall, J., Flynn, C. 1997: M Dwarfs From Hubble Space Telescope Star Counts III: The Groth Strip - Astrophysical Journal 482: 913

Hanski, M. 1997: Proc. of the Nordic-Baltic graduate student meeting on extragal. astronomy, The value of H_0 with Tully-Fisher relation for a large sample of field galaxies. In Hanski M. (ed.): Proc. of the Nordic-Baltic graduate student meeting on extragal. astronomy. Seili, Finland, 27.-29.1. 1997 - Tuorla Observatory Rep. No. 179

*Haque-Copilah, S., *Basu, D., Valtonen, M.J. 1997: Ejections of Population III Objects Seen as Blueshifted QSOs? - Journal of Astrophyics and Astronomy 18: 73-85

*Holmberg, J, Flynn, C, *Lindegren, L. 1997: Towards an Improved Model of the Galaxy - ESA Symposium, Hipparcos-Venice 97, ESA SP-402

*Innanen, K.A., Zheng, J.Q., Mikkola, S. and Valtonen, M.J. 1997: The Kozai mechanism and the stability of planetary orbits in binary star systems. - Astronomical Journal 107, 1879--1884.

*Karanchentsev, I., *Drozdowsky, I., *Kajsin, S., Takalo, L.O., Heinämäki, P., Valtonen, M. 1997: Revised photometric distances to nearby dwarf galaxies in the IC 342/Maffei complex - Astronomy & Astrophysics Supplement series 124: 559 - 571

Karttunen, H. 1997: Episykleistä ellipseihin. - Dimensio 1/98: 61-64

Karttunen, H., *Koistiainen, J., *Saltikoff, E., *Manner, O. 1997: Ilmakehä ja sää, Ursa, Helsinki, 368 pages

*Lähteenmäki, A., *Teräsranta, H., *Wiik, K., Valtaoja, E. 1997: Relationships between radio and gamma-ray properties in active galactic nuclei. - Proceedings of the Fourth Compton Symposium, eds. C.D. Dermer, M.S. Strickman, J.D. Kurfess, AIP Conference Proceedings 410, Woodbury, New York, p. 1452.

Lehto, H.J. 1997: Wavelets in unevenly spaced data: OJ 287 light curve - in Statistical challenges in Modern Astronomy II, eds G.K. Babu and E.D. Feigelson, Springer Verlag, p 423-426.

Lehto, H.J. 1997: OJ 287: Wavelet analysis of the 3-year light curve - in Astronomical Time Series, eds. D. Maoz, A. Sternberg, E.M. Leibowitz, Kluwer Academic Press, p. 269-272.

Lehto, H.J. 1997: OJ 287 -- a system with a binary black hole, - in Proc. of IAU symposium 184 held in Kyoto, August 1997.

Mikkola, S. 1997: Practical symplectic methods with time transformation for the few-body problem - Celestial Mechanics and Dynamical Astronomy 67: 145-165.

Mikkola, S. 1997: Numerical treatment of small stellar systems with binaries. - J.Docobo, A. Elipe and H.McAlister (eds.), Visual Double Stars: Formation, Dynamics and Evolutionary Tracks, 269--288, Kluwer, 1997.

Mikkola, S. and *Innanen, K. 1997: Orbital Stability of Planetary Quasi Satellites - in `The Dynamical Behaviour of our Planetary System' eds: J. Henrard and R. Dvorak, Proceedings of the Fourth Alexander von Humbolt Colloquium on Celestial Mechanics, Kluwer, 1997, pp 345--355.

*von Montigny, C., *Aller, H., *Aller, M., *Bruhweiler, F., *Collmar, W., *Edwards, P., *Fichtel, C.E., *Fruscione, A., *Hartman, R.C., *Kafatos, M., *Kniffen, D.A., *Lichti, G.G., *Maraschi, L., *Marscher, A., *McBreen, B., *McHardy, I., *Pesce, J., *Pohl, M., *Ramos, E., *Reich, W., *Robson, I., Teräsranta, H., *Tornikoski, M., *Urry, M., Valtaoja, E., *Wagner, S., *Weekes, T. 1997: Multiwavelength observations of 3C 273 in 1993-1995. - Astrophysical Journal 483: 161

*Mukherjee, R., *Bertsch, D.L., *Bloom, S.D., *Dingus, B.L., *Esposito, J.A., *Hartman, R.C., *Hunter, S.D., *Kanbach, G., *Kniffen, D.A., *Kraus, A., *Krichbaum, T.P., *Lin, Y.C., *Mahoney, W.A., *Marscher, A.P., *Mayer-Hasselwander, H.A., *Michelson, P.F., *von Montigny, C., *Mucke, A., *Nolan, P.L., *Pohl, M., *Reimer, O., *Schneid, E., *Sreekumar, P., *Teräsranta, H., *Thompson, D.J., *Tornikoski, M., Valtaoja, E., *Wagner, S., *Witzel, A. 1997: EGRET observations of PKS 0528+134 from 1991 to 1997. - Proceedings of the Fourth Compton Symposium, eds. C.D. Dermer, M.S. Strickman, J.D. Kurfess, AIP Conference Proceedings 410, Woodbury, New York, p. 1346.

Nilsson, K., *Heidt, J., Pursimo, T., Sillanpää, A., Takalo, L.O., *Jäger, K. 1997: Discovery of an optical jet in the BL Lacertae object 3C371 - Astrophysics Journal Letter 484: L107-111

Nilsson, K., Valtonen, M.J., *Jones, L.R., *Saslaw, W.C., Lehto, H.J. 1997: Optical emission in the radio lobes of Cygnus A. - Astronomy and Astrophysics 324: 888 - 898

Nilsson, K. and Lehto, H.J. 1997: PKS 0241+011: The largest quasar. - Astronomy & Astrophysics 328: 526-530.

Nilsson, K. : Studies of extragalactic double radio sources, 1997, - Annales Universitatis Turkuensis, Ser. A1, 225, 135 p.

*Pohjolainen, S., Valtaoja, E., *Urpo, S. 1997: Impulsive acceleration during gradual type solar radio flares. Advances in Space Research 20, 2337-2340 (1997)

*Pohjolainen, S., Valtaoja, E., *Urpo, S., *Aurass, H. 1997: Microwave emission from coronal heights; study of a non-thermal radio flare, - Solar Physics 173: 131.

Sillanpää, A., Takalo, L., Pursimo, T., Heinämäki, P, Nilsson, K., *Heidt, J. 1997: Some examples of the extremely close environments of BL Lac objects, in proceedings of the ESO-IAC conference "Quasar Hosts" (eds. Clements and Perez-Fournon), (Springer-Verlag Berlin Heidelberg), 223.

*Sommer-Larsen, J., *Beers, T.C., Flynn, C., *Wilhelm, R. and *Christensen, P. R. 1997: A dynamical and kinematical model of the Galactic stellar halo and possible models for galaxy formation scenarios - Astrophysical Journal 481: 775

*Stothers, R. B., Sillanpää, A. 1997: Test of periodicity in the quasar OJ 287 - Astrophysics Journal Letter 475: L13-L15.

*Sundelius, B., *Wahde, M., Lehto, H.J., Valtonen, M.J. 1997: A numerical simulation of the brightness variations of OJ 287. - Astrophysical Journal 484: 180-185

Takalo, L., Nilsson, K., Pursimo, T., Sillanpää, A., *Heidt, J. 1997: The optical jet in 3C371 - in proceedings of the ESO-IAC conference "Quasar Hosts" (eds.Clements and Perez-Fournon), (Springer-Verlag Berlin Heidelberg), 225.

Teerikorpi, P. 1997: Observational selection bias affecting the determination of the extragalactic distance scale. - Annual Review of Astronomy and Astrophysics 35: 101-136

Teerikorpi, P. 1997: Tähtien ja galaksien aikakausi. Kirjassa J. Rydman (toim.): Maailmankuvaa etsimässä (WSOY 1997) 138-160

*Thejll, P., Flynn, C. *Williams, R., and *Saffer, R. 1997: Proper motions of the hot subdwarfs. The kinematic population membership of the sdB. - Astronomy & Astrophysics 317: 689

*Theureau, G., Hanski, M., Ekholm, T., *Bottinelli, L., *Gouguenheim, L., *Paturel, G., Teerikorpi, P. 1997: Kinematics of the local universe: V The value of H_{o} from the Tully-Fisher B and logD_{25} relations for field galaxies. - Astronomy and Astrophysics 322:730-746

*Theureau, G., Hanski, M., Teerikorpi, P., *Bottinelli, L., *Gouguenheim, L., *Ekholm, T., *Paturel, G. 1997: Kinematics of the local universe: IV Type dependence in the diameter Tully-Fisher relation and implications on the mass-luminosity structure. - Astronomy and Astrophysics 319: 435-449

*Theureau, G., Hanski, M., Ekholm, T., *Bottinelli, L.; *Gouguenheim, L., *Paturel, G., Teerikorpi, P. 1997: The value of H_0 from the Tully-Fisher diameter relation. - In Proc. of the IAU symp. no. 183, Cosmological Parameters and Evolution of the Universe. Kyoto, Japan, 17-30 August, 1997

Valtaoja, E. 1997: Nollapiste nyt [Ground zero now]. Tiede 2000 6/1997 p. 66

Valtaoja, E. 1997: Total flux density variations, mm-VLBI and VSOP: new approaches. - Millimeter VLBI Workshop, eds. R. Barvainis and R.S. Phillips, MIT, Cambridge, p. 47.

Valtonen, M.J., Lehto, H.J. 1997: Outbursts in OJ287: A new test for the general theory of relativity. - Astrophysical Journal Letters 481: L5-L7

Valtonen, M.J. 1997: Andromeda vie kaiken alkuun. - Tiede 2000 8: 46-48.

Valtonen, M.J. 1997: Mass ratios in wide binary stars. - The Astrophysical Journal 485: 785-788

Valtonen, M.J. 1997: Wide Binaries from Few-Body Interactions. - Visual Double Stars: Formation, Dynamics and Evolutionary Tracks, J.A. Docobo et al. (toim.), Dordrecht-Boston, Kluwer: 241-257

*Villata, M., *Raiteri, C., Sillanpää, A., Takalo, L. 1997: Optical monitoring and beaming model for OJ 287 - MemSAIT 68: 203.

*Wehrle, A.E., *Pian, E., *Urry, C.M., *Maraschi, L., *Ghisellini, G., *Hartman, R.C., *Madejski, G.M., *Makino, F., *Marscher, A.P., *McHardy, I.M., *Webb, J.R., *Aldering, G.S., *Aller, M.F., *Aller, H.D., *Backman, D.E., *Balonek, T.J., *Boltwood, P., *Bonnell, J., *Caplinger, J., *Celotti, A., *Collmar, W., *Dalton, J., *Drucker, A., *Falomo, R., *Fichtel, C.E., *Freuding, W., *Gear, W.K., *Gonzalez-Perez, N., *Hall, P., *Inoue, H., *Johnson, W.N., *Kidger, M.R., *Kollgaard, R.I., *Kondo, Y., *Kurfess, J., *Lawson, A.J., *McCollum, B., *McNaron-Brown, K., *Nair, D., *Penton, S., *Pesce, J.E., *Pohl, M., Raiteri, C.M., *Renda, M., *Robson, E.I., *Sambruna, R.M., *Schirmer, A.F., *Schrader, C., *Sikora, M., Sillanpää, A., *Smith, P.S., *Stevens, J.A., *Stocke, J., Takalo, L.O., *Teräsranta, H., *Thompson, D.J., *Thompson, R., *Tornikoski, M., *Tosti, G., *Turcotte, P., *Treves, A., *Unwin, S.C., Valtaoja, E., *Villata, M., *Wagner, S.J., *Xu, W., *Zook, A. 1997: Multiwavelength observations of the February 1996 high-energy flare in the blazar 3C 279. - Proceedings of the Fourth Compton Symposium, eds. C.D. Dermer, M.S. Strickman, J.D. Kurfess, AIP Conference Proceedings 410, Woodbury, New York, p. 1417.

*Wiegert, P.A., *Innanen, K.A. and Mikkola, S. 1997: The Earth companion asteroid 3753 (1986 TO) - Nature 387: 685--686.

*Zheng, J.Q., Mikkola, S., Valtonen, M.J. 1997: The Kozai mechanism and the stability of planetary orbits in binary star systems. - Astronomical Journal Vol. 113 (5): 1915-1919

*Zook, A.C., *Giammona, W.J., *Unwin, S.C., *Wehrle, A.E., *Teräsranta, H., Valtaoja, E., *Kidger, M.R., *Ginzalez-Perez, J.N. 1997: Radio counterparts of unidentified EGRET gamma-ray sources - Astronomical Journal 114: 1121

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