Light curves in DAL

[Douglas Tody]

Hi Petr -

The Spectral Data Model (SDM 2.0) currently in progress is designed to
support time series data / light curves as well as spectra and SEDs (as
we agreed in Pune when SDM 2.0 was launched).  The thinking is that most
of the model is generic and can be used unchanged, however a new
submodel TimeSeries is added to hold any truly time series-specific
metadata (period characterization, information about folding, trend
removal, etc.).  There should be an update to the current TimeSeries
Note outlining a proposed data model in sufficient detail to be used for
prototyping.  Within VAO, we have plans to publish a half dozen or so
data collections as part of the prototyping effort.

 	- Doug


On Fri, 21 Sep 2012, Petr Skoda wrote:

>
> Hi all
>
> I did not follow too much the recent evolution on photometric data model and 
> SSAPv2 - so sorry for naive question :
>
> What is a current best practice to express light curves in VO ?
> So far I have seen some services (e.g. COROT) looking like SSAP with 
> wavelength axis changed in time - which works well in SPLAT and VOSPEC but I 
> havent yet seen any proper VO protocol on other observations - e.g. 
> microlensing surveys etc ...
>
> I have now the opportunity to use students for some development in Java and 
> so I was thinking about reshaping some archives of lightcurves of our 
> interest (from local projects of variable stars observation) to be able to 
> make quick preview in SPLAT or other tools - I was thinking about using
> BAND=V,R,g  etc to select.
>
> I remember some presentation of SVO - that only adding some keywoards in SSA 
> would suffice - but then the general attention was switched towards the new 
> SED model and SED business. But as it becomes to complicated to understand 
> even to me ;-) I would like to see an use case on some light curves.
>
> I am sure there are projects on-going. Please let me know
>
> Best regards,
>
> Petr
>
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> *  Petr Skoda                         Phone : +420-323-649201, ext. 361 *
> *  Stellar Department                         +420-323-620361           *
> *  Astronomical Institute AS CR       Fax   : +420-323-620250           *
> *  251 65 Ondrejov                    e-mail: skoda at sunstel.asu.cas.cz  *
> *  Czech Republic                                                       *
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