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HD 120075


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ROSAT X-ray survey of an area 10 degrees square around the active radio galaxy Centaurus A
Diffuse X-ray material extends in an irregular, broad filament for morethan 5 degrees north east of the giant radio elliptical, NGC 5128 (CenA). In the opposite direction the X-ray extension is clearly traced forabout 2 degrees, making an overall line of X-rays of greater than 7degon the sky originating from Cen A. The direction of this line coincidesalmost exactly with the direction of the X-ray jet, and its associatedradio jet, in the interior of Cen A. At a slightly different angle,within the accuracy of measurement along the X-ray counter jet, isencountered the radio and X-ray galaxy NGC 5090. Its presence in theX-ray ejection from Cen A supports the precedent from other associationsthat NGC 5090 is physically associated with Cen A. In the hardest X-raysthere is some indication that the radio lobes from Cen A are edgebrightened. Positions and known identifications of sources in the fieldare given. Some preliminary estimates of the properties of thisextensive X-ray material which has apparently been ejected from thisactive galaxy are given.

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Observation and Astrometry data

Constellation:Centaurus
Right ascension:13h48m02.55s
Declination:-41°59'38.3"
Apparent magnitude:8.949
Distance:234.742 parsecs
Proper motion RA:-27.1
Proper motion Dec:-21
B-T magnitude:9.56
V-T magnitude:9

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 120075
TYCHO-2 2000TYC 7797-2686-1
USNO-A2.0USNO-A2 0450-16307827
HIPHIP 67334

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