منابع مشابه
The Unusual Object Ic 2144/mwc 778
IC 2144 is a small reflection nebula located in the zone of avoidance near the Galactic anticenter. It has been investigated here largely on the basis of Keck/HIRES optical spectroscopy (R ≈ 48,000) and a SpeX spectrogram of the near-IR (R = 2000) obtained at the NASA IRTF. The only star in the nebula that is obvious in the optical or near-IR is the peculiar emission-line object MWC 778 (V = 12...
متن کاملUnusual radio variability in the BL Lacertae object 0235 + 164
We present radio observations at three frequencies and contemporaneous optical monitoring of the peculiar BL Lac object AO 0235+164. During a three-week campaign with the VLA we observed intraday variability in this source and found a distinct peak which can be identified throughout the radio frequencies and tentatively connected to the R-band variations. This event is characterized by unusual ...
متن کاملThe Unusual Infrared Object HDF – N J 123656 . 3 + 621322
We describe an object in the Hubble Deep Field North with very unusual near– infrared properties. It is readily visible in Hubble Space Telescope NICMOS images at 1.6μm and from the ground at 2.2μm, but is undetected (with signal–to–noise ∼< 2) in very deep WFPC2 and NICMOS data from 0.3 to 1.1μm. The fν flux density drops by a factor ∼> 8.3 (97.7% confidence) from 1.6 to 1.1μm. The object is c...
متن کاملUnusual radio variability in the BL Lac object 0235 + 164
We present radio observations at three frequencies and contemporaneous optical monitoring of the peculiar BLLac object AO0235+164. During a three-week campaign with the VLA we observed intraday variability in this source and found a distinct peak which can be identified throughout the radio frequencies and tentatively connected to the R-band variations. This event is characterized by unusual pr...
متن کاملSplenic Actinomycosis: Unusual Presentation
Splenic abscess is not a common condition and actinomyces as a cause is very rarely reported. We report a case of actinomycosis of spleen in a 12 year-old boy, with a few days history of abdominal pain and fever. Past medical history was not significant. Due to sever abdominal pain and tenderness condition laparatomy was done that a small perforated area was seen on hilum of spleen, so splenect...
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ژورنال
عنوان ژورنال: BMJ
سال: 1964
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.2.5425.1660-a