Astronomical instrumentation

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MULTICOLOR, 8-13-MU-M MAPS OF THE CENTRAL PARSEC OF THE GALAXY

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 246:1 (1990) 1-&

Authors:

CH SMITH, DK AITKEN, PF ROCHE
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Polycyclic Aromatic Hydrocarbons and Silicate Emission in Nova Centauri 1986

IAU Colloq. 122: Physics of Classical Novae 369 (1990) 197-197

Authors:

CH Smith, DK Aitken, PF Roche
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VELOCITY MAPPING AND MODELS OF THE ELLIPTIC GALAXIES NGC 720, NGC 1052, AND NGC 4697

ASTROPHYSICAL JOURNAL 361:1 (1990) 78-97

Authors:

JJ BINNEY, RL DAVIES, GD ILLINGWORTH
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WHAT ARE IRAS GALAXIES - AN OPTICAL ANSWER

PROCEEDINGS ASTRONOMICAL SOCIETY OF AUSTRALIA 8:3 (1990) 246-249

Authors:

VS MEADOWS, DA ALLEN, RP NORRIS, PF ROCHE
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A search for megamaser galaxies

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 237 (1989) 673-681-673-681

Authors:

RP Norris, FF Gardner, JB Whiteoak, DA Allen, PF Roche

Abstract:

The results of a search for OH megamaser emission from a sample of 32 galaxies selected from the IRAS Point Source Catalog on the basis of their IR properties are presented. For each galaxy (other than those few already observed elsewhere), an optical redshift is obtained and both OH and H I emission are sought. The search yielded one new OH megamaser galaxy, and H I was detected toward nine objects. There are unlikely to be any OH megamasers in the Southern Hemisphere with flux densities comparable to that of Arp 220 (280 mJy), although there may be a population of weaker megamasers. No special conditions are required to explain the known OH megamasers other than those expected in a cool, dusty, active galaxy.
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