The Mass Surface Density in the Local Disk and the Chemical Evolution of the Galaxy | Zendy

D. Romano | Zendy; F. Matteuccí | Zendy; P. Salucci | Zendy; C. Chiappini | Zendy

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The Mass Surface Density in the Local Disk and the Chemical Evolution of the Galaxy

Author(s) -

D. Romano,

F. Matteuccí,

P. Salucci,

C. Chiappini

Publication year - 2000

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/309223

Subject(s) - astrophysics , physics , metallicity , galaxy , supernova , stars , dwarf galaxy , range (aeronautics) , irregular galaxy , stellar mass , mass distribution , astronomy , star formation , interacting galaxy , materials science , composite material

We have studied the effect of adopting different values of the total baryonicmass surface density in the local disk at the present time in a model for thechemical evolution of the Galaxy. We have compared our model results with theG-dwarf metallicity distribution, the amounts of gas, stars, stellar remnants,infall rate and SN rate in the solar vicinity, and with the radial abundancegradients and gas distribution in the disk. This comparison strongly suggeststhat the value of the total baryonic mass surface density in the local diskwhich best fits the observational properties should lie in the range 50-75 Msunpc-2, and that values outside this range should be ruled out.Comment: 6 pages, LaTeX, 3 figures, accepted for publication in the Astrophysical Journal, uses emulateapj.st

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