Search
Now showing items 1-5 of 5
Outflow 20–2000 AU from a High‐Mass Protostar in W51‐IRS 2
(IOP Publishing, 2002)
We present the results of the first high angular resolution observations of SiO maser emission towards the star forming region W51-IRS2 made with the Very Large Array (VLA) and Very Long Baseline Array (VLBA). Our images ...
A Search for H 2 O Maser Emission in Southern Active Galactic Nuclei and Star‐forming Galaxies: Discovery of a Maser in the Edge‐on Galaxy IRAS F01063?8034
(IOP Publishing, 2002)
We report the cumulative results of five surveys for H2O maser emission at 1.35 cm wavelength in 131 active galactic nuclei (AGNs) and star-forming galaxies, conducted at the Parkes Observatory between 1993 and 1998. We ...
The Discovery of H2O Maser Emission in Seven AGN and at High Velocities in the Circinus Galaxy
(IOP Publishing, 2002)
We report the discovery of H2O maser emission at 1.35 cm wavelength in seven active galactic nuclei (at distances up to < 80 Mpc) during a survey conducted at the 70-m diameter antenna of the NASA Deep Space Network near ...
Rotational and Vibrational Excitation of CO Molecules by Collisions with 4 He Atoms
(IOP Publishing, 2002)
Full close-coupled calculations are carried out of the cross sections for energy transfer between rotational levels of carbon monoxide in collision with 4He atoms with energies between 5 and 600 cm-1. At low energies, the ...
C2absorption-line diagnostics of diffuse interstellar clouds
(Oxford University Press (OUP), 2002)
The excitation of the diatomic carbon molecule in diffuse interstellar clouds is discussed for a cloud with large density fluctuations of small linear filling factor along the line of sight. Possible implications for the ...