[yt-users] star_density slices

[Britton Smith]

Hi Elizabeth,

Matt and I are still puzzling over this.  It's not clear right now if the
issue is related to projecting particles in general in your data or
projecting star particles specifically.  Can you do another full box
projection for us, but this time with the field dm_density?  That should
help us to narrow down the problem.

Britton

On Mon, Jun 13, 2011 at 10:31 AM, Elizabeth Tasker <taskere at mcmaster.ca>wrote:

> Hi Matt and Britton,
>
> I've attached the image for the stars over the whole disk; it shows the
> same issue, with the grids (and also any gas property) showing the region
> correctly, but the stars only appearing in a small patch.
>
> Matt, your script gives:
>
> Min: [('x', 5.6774955112245706), ('y', 5.7878015648296586), ('z',
> 15.07668303734844)]
> Max: [('x', 26.537083788811703), ('y', 25.802074691296504), ('z',
> 17.201602159672426)]
>
>
> Which are the values I expect.
>
> It could be, as Britton suggests, a problem with the box size not being
> 0-1. Although, that is a particularly random patch it's decided to fill in.
>
> Elizabeth
>
>
>
> Matthew Turk wrote:
>
>> Hi Elizabeth,
>>
>> Weird.
>>
>> This script should help us find out where the stars live.  What's it
>> give you?  (Replace the loaded dataset with your own.)
>>
>> http://paste.enzotools.org/show/1696/
>>
>> Also, it'd be nice to see that image Britton requested.
>>
>> -Matt
>>
>> On Fri, Jun 10, 2011 at 2:02 PM, Elizabeth Tasker <taskere at mcmaster.ca>
>> wrote:
>>
>>
>>> Oddly, neither of those make any difference.
>>>
>>> Elizabeth
>>>
>>>
>>>
>>> Britton Smith wrote:
>>>
>>>
>>>> I would also suggest trying some projections instead of slices as well.
>>>>  Both of those fields are created using the CIC_deposit interpolation
>>>> method
>>>> with just the star particles.  I could see a field like that being
>>>> problematic when doing slices.
>>>>
>>>> Britton
>>>>
>>>> On Fri, Jun 10, 2011 at 4:10 PM, Cameron Hummels
>>>> <chummels at astro.columbia.edu <mailto:chummels at astro.columbia.edu>>
>>>> wrote:
>>>>
>>>>   Try using the field StarMassMsun instead of star_density and see
>>>>   what it yields.  I've had better luck with that field.
>>>>
>>>>   Cameron
>>>>
>>>>
>>>>   On 6/10/11 4:00 PM, Elizabeth Tasker wrote:
>>>>
>>>>
>>>>>   Hi,
>>>>>
>>>>>   Slices of the star_density field are only showing a tiny patch of
>>>>>   the area in the corner, rather than the whole region. My script
>>>>>   looks like:
>>>>>
>>>>>   pc = PlotCollection(pf, center=[17.,11.5, 16])
>>>>>   p = pc.add_slice("star_density", 2)
>>>>>   pc.set_width(10, 'kpc')
>>>>>   p.modify["grids"]()
>>>>>
>>>>>   Density comes out fine and the grids are drawn in but then only a
>>>>>   few of them get stars.
>>>>>
>>>>>   Elizabeth
>>>>>
>>>>>
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