The two galaxies that make up Arp 273 are most definitely interacting, not only are they distorted but a bridge can be seen between them. The bridge between the two galaxies appears to be mostly made up of older stars There is a starburst happening in the smaller companion UGC01813 but when we compare the flux ratios between the blue and clear and red and clear images we don't find UGC01813 to be bluer like we might expect for a starburst galaxy. The reason for that is likey the dust the light is travelling through as the galaxy is edge on. We would need to know the luminosity in of the dust in the galaxy and the luminosity from far infrared wavelengths to be able to determine this (Spectra also work but again aren't terribly useful when a galaxy is seen edge-on).

An unrelated tidbit of info: Frank Summers, Chris Mihos and Lars Hernquist have created a beautiful merger simulation. It's definitely worth checking out. Write this down: http://oposite.stsci.edu/pubinfo/pr/2002/09/animation.html Comments on success of research: Before I list specifics, I felt I should note that almost more than anything else this course taught me how to find 'stuff' (and yes I do put 'stuff' in the most general terms, be it specific data like group association, something more general like papers through ADS abstract or just general educational/outreach stuff). the information I went to find to touch up my webpage took less time overall than even the Basic Info" which was for the most part all in the same general location. The link to LEDA in the pink box under the galaxy info on the NED page is very useful. It has just about everything listed and clearly (*GASP* ;) some of the others were anything but clear. The Group Association was tough to find. It wasn't explicity stated anywhere and when I tried looking in papers I ran into the following problems in order : no link to on-line papers, not in library table of galaxies not included in on-line paper Galaxy pair listed by an alternate name I was not familliar with yet so that took a while. There weren't many recent images of Arp 273. Neither Hubble or CFHT have imaged it at all never mind had the data reduced and presented. A lot of papers refered back to either the POSS Blue and or Red prints (for papers useing large quantities of data) and the actual images weren't included in the photometry papers, just selected contour images. There was the one NOAO image but it was already false colour and was only a very short exposure (something like 2 sec). A lot of time was spent trying to figure out the photometry package. Have delt with it this year should help for next year. Once understood it's really not that bad. Things I'd do differently for sure would be to start my schedule sooner. I am pretty good at keeping moving with a project but not always in the right direction (I can spend hours on something worth say 5 marks and not have touched a part worth 60) Telescope/Observatory operation suggestions: have a second cord at the observatory (although it sounds like this will already be covered) Make space on the hard drive. We were saving to the program drive I believe. There wasn't enough space to copy a small text file (the coordinates file). Maybe look into getting breakers instead of fuses. I can't image it would be that difficult and it would likely save money as well as mild aggrivation and potential zaps connecting the computers where the files are saved to an internet connection so we could FTP them and not have to bother with disks and how to get the content from the disk to ccu. These are entirly frivilous...but just incase... Darker alcoholed thermometer, perhaps even mercury (being able to see the red under the red light was a talent) Remote control "we are here please turn off your headlights" sign so we don't have to stop, get out of a slightly warming car and get ourselves and our car cold again.

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