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Дата изменения: Mon Oct 7 06:14:34 1996
Дата индексирования: Mon Oct 1 20:03:51 2012
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Astro-2 and the UIT Experiment

UIT Targets Sucessfully Acquired (Whew!):

Days 12--13:

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:

Observed at MET: 12/01:09

NGC 2300 is in a small group of galaxies which has a substantial amount of X-ray emission. Some of the galaxies are currently engaged in a tidal interaction which may be compressing gas and exciting star formation resulting in some UV bright regions in this group. The exposure times were 381 seconds through B5 and 54 seconds through A1.

Observed at MET: 12/01:40

M3 is a galactic globular cluster with a relatively bright core. For a globular cluster, these exposures were relatively deep with 300 seconds spent in A1 and 620 seconds spent in B1.

Observed at MET: 12/02:30

NGC 925 is an actively star forming late type spiral which is relatively nearby (< 10 Mpc). This exposure was for 1590 seconds through the B5 filter

Observed at MET: 12/03:22

LUNA again for 777 through lots of filters. Luna was in a brighter phase relative to the first observation.

Observed at MET: 12/10:10

Supernova 1987A in the Large Magellanic Cloud was observed for 3740 seconds through B5, A1 and B1. This long observation should help better characterize the light echo.

Observed at MET: 12/12:22

The bar region of the LMC was observed for 718 seconds through B1 and 374 seconds through A1. This filter system is optimally matched to the energy distribution of hot stars and should unambiguoulsy detect individual O and B stars in the bar region.

Observed at MET: 12/14:14

47 Tuc was observed again for 278 seconds through A1, 1689 seconds through B5 and 405 seconds through A5.

Observed at MET: 12/15:22

NGC 5128 or Cen A was observed for 1454 seconds through the B1 filter. This famous, strongly peculiar galaxy, is thought to be the result of a merger between two galaxies. In fact, this model remnant produced in a computer simulation looks a lot like Cen A (blue is stars and red is gas).

Observed at MET: 12/16:03

NGC 6397 is another galactic globular cluster which is the host of a few X-ray sources. This exposure was for 383 seconds through B5.