Catalogue of ages, metallicities, orbital elements and other parameters for nearby F stars V.A. Marsakov, Yu.G. Shevelev Institute of Physics, Rostov University, 194, Stachki av., 344104 Rostov-on-Don, Russia 25 April, 1994 Abstruct Absolute magnitudes, metallicities, effective temperatures, surface gravities, distances, and tangential velocities are calculated for 5489 F stars with homogeneous data on uvby photometry and proper motion, and lying within 80 pc from the Sun. Components of space velocities, eccentricities of galactic orbits, perigalactic and apogalactic distances, and maximal remotnes from galactic plane are presented for 1787 stars. Isochrone ages are determined for 3405 slightly evolved stars proceeding from Revised Yale isochrones. The present sample is composed on the base of the Hauck and Mermilliod (1985) compilative homogenious catalogue which contains all uvby photometrical measurements being known up to the end of 1983. The coordinates, spectral classification, visual magnitudes, proper motions and radial velocities have been added into our sample from Ochsenbein (1980) catalogue. The radial velocities from some other sourses have also been added. The temperature indices (b-y) were corrected for blanketing and luminosity effects for each stars, according to Crawford (1975): (b-y)cor=(b-y)+0.05*delta c1+[0.1+3.6(2.72-beta'st)]*delta m1 where preliminary value beta'st has been founded from the observed (b-y) colour by means of the table of standard indices from the same reference paper. Final values of colour excess delta m1, delta c1, and index beta st are determined on (b-y)cor for each star. Absolute magnitude and metallicity are obtained by using the relations: MV=MV(ZAMS)-[9+20(2.72-beta st)]\delta c1 (Crawford,1975), and [Fe/H]=0.16-0.66(2.72-beta st)-[12.3-38(2.72-beta st)]*delta m1 (Carlberg et al., 1985), where MV(ZAMS) is the absolute magnitudes of ZAMS obta- ined by Crawford (1975) for the stars of solar-composition for a given (b-y)cor. Crawford has estimated that the standard deviation in MV for a single disk F stars proceeding from uvby data is 0.25m. The effective temperatures and surface gravities are calculated by using the Moon's (1985) methodic. In accordance with Moon the standard deviations of this parameters are: Teff=100 K, and lg g=0.06. The distances to the stars are calculated on the basis of the absolute magnitude and visual magnitude from Ochsenbein (1980) catalogue. Distance errors of the stars mainly due to absolute magnitude errors are estimated as 11% (Perry et al.,1983). Components of tangen- tial velocities was calculated on the base of proper motions and photometric distancies. The components of the space velocities ralative to the Sun are calculated only for 1787 stars with radial velocities. The galactic orbital elements are calculated for the same stars proceeding from the paper by Allen and Santillan (1991) containing bulge, disk, and massive spherical halo. The ages was found for 3405 slightly evolved delta MV>0.3m stars proceeding from Revised Yale isochrones (Green et al., 1987). The stellar deviation from the theoretical ZAMS (delta MV), determined as [9+20(2.72-beta st)]\delta c1, was used in comparison with the theoretical isochrones. The helium content was assumed Y=0.25. The mean value of stellar age was determined in the vicinity of geometrical place of turn-off points at the H-R diagram, where three (sometimes- two) isochrones are crossing in earch point (so-called "hook-region"). The uncertainty in the age of these stars is about 15% (Shevelev,Marsakov,1993). The criteria for the selection of the sample were the following: 0.222<=(b-y)cor<=0.412 (that coresponds approximately to F2-G2 spectral interval); -0.06<=delta c1<=0.20 (that excludes pecular and far evolved stars); R<= 80 pc (that excludes reddened stars); [Fe/H] > -1.0 (interval, where the metallicity calibration is correct). The final sample is practically full in the vicinity within 80 pc of the Sun for stars with (b-y)cor<0.32, and completnes equals about 60% for the whole temperature interval. There is also some boundary selection on the red end near 0.39<(b-y)cor<=0.412. The present catalogue consists of 2 files: File 1. Description of the catalogue Record length: 80 bytes - Number of records: 117. File 2. Catalogue of ages, metallicities, orbital elements and other parameters for nearby F stars. Record length: 142 bytes - Number of records: 5498. A brief description of the data fields is given below. For earch field is listed: mnemonic abbreviation of the data item; the position of the data in File 2 (first-last byte or column number); a short description of the data item. HD 1 - 6 HD number of the star D 7 duplicity (b-y)cor 8 - 13 temperature index, corrected for blanketing and luminosity effects delta m1 14 - 20 index of metallicity delta c1 21 - 27 index of luminosity [Fe/H] 28 - 33 metallicity Teff 34 - 38 effective temperature log g 39 - 43 gravity MV 44 - 48 absolute magnitude t 49 - 54 age in billion years l 55 - 61 galactic longitude b 62 - 68 galactic latitude Sp 69 - 79 MK spectral classification R 80 - 83 distance from the star to the Sun in parsecs Vl 84 - 90 components of tangential velocity in km/s relative Vb 91 - 97 to the Sun in l- and b-derections respectively u 98 - 104 components of velocity in km/s relative to the Sun, v 05 - 111 measured in a galactic frame and positive towards w 112 - 118 the galactic centre, in the direction galactic rota- tion, and towards the north galactic pole respectively Rp 119 - 124 perigalacticon in kpc Ra 125 - 130 apogalacticon in kpc Zmax 131 - 136 maximal remotness from galactic plane in kpc e 137 - 142 eccentricity References [1] Allen C., Santillan A. 1991, Rev. Mexicana. Astron. Astrof. V. 22, p. 255. [2] Carlberg A.G., Dawson P.C., Hsu T., Vandenberg D.A. 1985, Astrophys. J. V. 294, P. 674. [3] Crawford D.L. 1975, Astron. J. V. 80, P. 955. [4] Green E., Demarque P., King C. 1987, The revised Yale isochrones. Yale Univ. obs., New Haven. [5] Hauck B., Mermilliod M. 1985, Astron. Astrophys. Suppl. Ser. V. 60, P. 61. [6] Moon T.T. 1985, Com. Univ. London obs. V. 78, 1. [7] Ochsenbein F. 1980, Bull. Inf. CDS N 19, P. 74. [8] Perry C.L., Johnston L., Crawford D.L. 1983, Astron. J. V. 87, P. 1751. [9] Shevelev Yu.G., Marsakov V.A. 1993, Astron. Zhurn. V. 70, P. 1218.