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Water vapor in the starburst galaxy NGC 253: A new nuclear maser?
C. Henkel, A. Tarchi, K. M. Menten +1
22 GHz water vapor emission was observed toward the central region of the spiral starburst galaxy NGC 253. Monitoring observations with the 100-m telescope at Effelsberg and measur…
Neutral hydrogen absorption at the center of NGC2146
A. Tarchi, A. Greve, A. B. Peck +4
We present 1.4 GHz HI absorption line observations towards the starburst in NGC2146, made with the VLA and MERLIN. The HI absorption has a regular spatial and regular velocity dist…
Extragalactic water masers in bright IRAS sources
A. Tarchi, C. Henkel, A. B. Peck +3
We report the results of a search for 22 GHz water maser emission in IRAS-bright galaxies, using the 100-m Effelsberg telescope. In particular, we present the details of four new m…
Discovery of a luminous water megamaser in the FRII radiogalaxy 3C403
A. Tarchi, C. Henkel, M. Chiaberge +1
We report the first detection of a water megamaser in a radio-loud galaxy, 3C403. This object has been observed as part of a small sample of FRIIs with evidence of nuclear obscurat…