Absorber size from Absorption Spectrum fit?
Hi all, I have a feelling that the answer to this is--nope, not easy or built-in, but thought I should check before I go nuts staring at the source code. I know that once I make a spectrum I can get the column density of all the absorbers along a LightRay, and the b value. Is there a way to get the size, or length, of each absorber? I see a figure doing this in the Egan 2014 paper, but don't see a clear way to ask for it in any of the calls, nor do I see anything in Trident. Thanks, Stephanie -- Dr. Stephanie Tonnesen Alvin E. Nashman Postdoctoral Fellow Carnegie Observatories, Pasadena, CA stonnes@gmail.com
To my knowledge, there is no built-in way to get the size of each
absorber. You could write some simple code to look at the ion density
values along the LightRay object, and then make a threshold above which
something is an absorber and below which it is not, and then use that to
estimate the length of each absorber. That might work.
Cameron
On Thu, Aug 25, 2016 at 9:55 AM, Stephanie Tonnesen
Hi all,
I have a feelling that the answer to this is--nope, not easy or built-in, but thought I should check before I go nuts staring at the source code. I know that once I make a spectrum I can get the column density of all the absorbers along a LightRay, and the b value. Is there a way to get the size, or length, of each absorber? I see a figure doing this in the Egan 2014 paper, but don't see a clear way to ask for it in any of the calls, nor do I see anything in Trident.
Thanks, Stephanie
-- Dr. Stephanie Tonnesen Alvin E. Nashman Postdoctoral Fellow Carnegie Observatories, Pasadena, CA stonnes@gmail.com
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-- Cameron Hummels NSF Postdoctoral Fellow Department of Astronomy California Institute of Technology http://chummels.org
Hi Stephanie,
Hilary Egan (on this mailing list) has a BitBucket repo with the code she
used in her paper, which will do what you've requested or at least get you
most of the way there. It's not publicly available, but it should be
usable for you (though it might need to be updated to yt-3). Hopefully she
can share that with you!
--Brian
On Thu, Aug 25, 2016 at 12:55 PM, Stephanie Tonnesen
Hi all,
I have a feelling that the answer to this is--nope, not easy or built-in, but thought I should check before I go nuts staring at the source code. I know that once I make a spectrum I can get the column density of all the absorbers along a LightRay, and the b value. Is there a way to get the size, or length, of each absorber? I see a figure doing this in the Egan 2014 paper, but don't see a clear way to ask for it in any of the calls, nor do I see anything in Trident.
Thanks, Stephanie
-- Dr. Stephanie Tonnesen Alvin E. Nashman Postdoctoral Fellow Carnegie Observatories, Pasadena, CA stonnes@gmail.com
_______________________________________________ yt-users mailing list yt-users@lists.spacepope.org http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org
Thanks Brian and Cameron!
Best,
Stephanie
--
Dr. Stephanie Tonnesen
Alvin E. Nashman Postdoctoral Fellow
Carnegie Observatories, Pasadena, CA
stonnes@gmail.com
On Thu, Aug 25, 2016 at 10:50 AM, Brian O'Shea
Hi Stephanie,
Hilary Egan (on this mailing list) has a BitBucket repo with the code she used in her paper, which will do what you've requested or at least get you most of the way there. It's not publicly available, but it should be usable for you (though it might need to be updated to yt-3). Hopefully she can share that with you!
--Brian
On Thu, Aug 25, 2016 at 12:55 PM, Stephanie Tonnesen
wrote: Hi all,
I have a feelling that the answer to this is--nope, not easy or built-in, but thought I should check before I go nuts staring at the source code. I know that once I make a spectrum I can get the column density of all the absorbers along a LightRay, and the b value. Is there a way to get the size, or length, of each absorber? I see a figure doing this in the Egan 2014 paper, but don't see a clear way to ask for it in any of the calls, nor do I see anything in Trident.
Thanks, Stephanie
-- Dr. Stephanie Tonnesen Alvin E. Nashman Postdoctoral Fellow Carnegie Observatories, Pasadena, CA stonnes@gmail.com
_______________________________________________ yt-users mailing list yt-users@lists.spacepope.org http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org
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participants (3)
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Brian O'Shea
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Cameron Hummels
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Stephanie Tonnesen