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Дата изменения: Mon May 8 23:01:34 2006 Дата индексирования: Sun Dec 23 01:56:09 2007 Кодировка: Поисковые слова: reflection nebula |
HIDEEP | 4 by 8 degree region in Cen | 9000 sec per beam | |
HIPASS: | All sky south of Dec +22 | 450 sec/beam | |
HIJASS: | All sky north of Dec +22 | 350 sec/beam |
Therefore, there appears to be a lack of low column density galaxies. This result
needs to be explored further. It could be due to ionization, frozen disks
(Tspin ~ Tcmb), or the effects of environment.
Riccardo | What is the source of the optical redshifts you use to determine the large scale structure at the high velocity end? |
Erwin | NED. |
Riccardo | That may explain your finding a "void". Most of those are probably from the SSRS which is very shallow. |
DJ | When you go from 64 MHz to 100 MHz, don't you think there will be lots more interference? |
Erwin | We took all data at night. That helped a lot because there was no solar interference. You would want to tailor the survey strategy to minimize rfi. |
Steve |
In terms of your column density, you are assuming filled beam and then adopting
an optical size. I think you need to use the optical sizes for the assumption.
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Erwin | That's probably true. It would bring up the line a bit but maybe not the whole way. |