Astro-2 and the UIT Experiment

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Дата индексирования: Mon Oct 1 19:52:05 2012
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UIT Targets Sucessfully Acquired (Whew!):

Days 6--7:

We report here on those proposed UIT targets that, in fact, were successfully acquired. Where possible we provide an optical CCD image of the target or the field.

Note on Filters:

A1 centered at 2500 angstroms with a width of 1200 angstroms
B5 centered at 1615 angstroms with a width of 150 angstroms

Observed at MET: 06/00:12

NGC 205 is a low mass dwarf companion to the Andromeda Galaxy . It is about 1/3 of an Andromeda diameter away from Andromeda. NGC 205 is unusual in that it has retained some gas in its nuclear regions which is currently fueling a modest amount of star formation. The UIT data should allow individual O-stars to be resolved and seen. This is a high priority target which was missed on Day 2. This current exposure was 693 seconds through the B5 filter.

Observed at MET: 06/00:30

NGC 2403 is a galaxy very similar to M33 . It is a late-type multi-arm spiral with large scale sta formation. It is also one of the fundamental calibrators of the extragalactic distance scale as it has detectable Cepheids. A total of 1200 seconds were obtained through the A1 and B1 filters.

Observed at MET: 06/13:03

M104 or NGC 4549 is a bulge dominated edge-on galaxy with a strong dust lane. The degradation of the star light in the UV should be extreme and in comparison with the optical will shed light on the extinction curve for this galaxy. A total of 2150 seconds through the A1,B1 and B5 filters was obtained.

Observed at MET: 06/23:04

Deep LSB galaxy field

1950