Spectra DM for theoretical spectra?

[Miguel Cerviño]

Hi,

Well, for other kind of spectra (galaxy ones)
that are in fact yet in the VO by SVO, VO-PAris and Milenium (I do not  
know if in the VO access)

The parameters should be:

- Age
- Initial Mass Function
           (It is defined by, if an analytitic function: Functional form
                                                                                  parameters 
  of the functional form
                                         If other form, like the  
result of Montecarlo simulations, an array)
- Atmosphere Libraries used
             (It include Carlos parameters for the atmosphere +  
coverage of the parameter range
              It include its metalicity prescription, usually in  
therms of [Fe/H]
- Isocrones set used (At this moment there is no DM  for that, may be  
a bibliografic reference?)
             It should include also its own metallicity prescription,  
usually in terms of Z
             And at this moement fundamental: Alpha elements abundances
- Star fromation History
           (again, functional form if any and parameters)


And I think that it is :)

cheers

m



On Jun 3, 2009, at 3:57 PM, Pierre Didelon wrote:

>
>
> Carlos Rodrigo Blanco wrote:
>
>> Hi
>>
>> I think that there is a minimum set given by:
>>
>> Teff: effective temperature of the star
>> Logg: logarithm of the gravity
>> Metallicity (for some authors this is the fraction of elements  
>> heavier than Hidrogen and for other it is something different,
>
> He abundance,
> s element abundunces
> p element abundances
> or even more precise things
>
>> I can ask for a better definition to some real astronomer :-)
>
> am I reel?
> or a virtual astronomer :-\
>
>>
>>
>
> -- 
> Pierre
> -------------------------------------------------------------------
> DIDELON :@: pdidelon_at_cea.fr        Phone : 33 (0)1 69 08 58 89
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> l'oeil qui scrute, qui dissèque, qui analyse, doit être réconcilié
> avec l'oeil qui vénère et qui contemple.       Hubert Reeves
> -------------------------------------------------------------------
>
>
>


-------------------------------------------------------------
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quienes nunca se van a dar por contentos"

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