{;%C0 in Finder window of HD

[monta17]

In the finder I usually am looking at my "home" under "Places".
However, I just clicked on the "Macintosh HD" under "Devices" and there are some strange documents there. The creation date on all of them is 3/14/09.
These are the folders I am seeing:
{;%C0
%80Q
<.
barbaras-andersons-macbook-pro-2 kernel[0]/ hibernate_page_list_setall start
barbara-andersons-macbook-pro-2 kernel[0]/ image1Size 340098048
barbara-andersons-macbook-pro-2 kernel[0]/ IOHibernatePollerOpen(0)
barbara-andersons-macbook-pro-2 kernel[0]/ writing 336218 pages
Facility
s;%C0

(I am attaching an image of the window.)

What are these things?
Thanks, Barbara