منابع مشابه
ATCA 1 . 2 cm Observations of the Massive Star Forming Region G 305 . 2 + 0 . 2
We report on Australia Telescope observations of the massive star forming region G305.2+0.2 at 1.2 cm. We detected emission in five molecules towards G305A, confirming its hot core nature. We determined a rotational temperature of 26K for methanol. A non-LTE excitation calculation suggests a kinematic temperature of order 200K. A time dependent chemical model is also used to model the gas phase...
متن کاملATCA search for 21 cm emission from a candidate damped
We report a deep search for 21 cm emission/absorption from the z ∼ 0.101 candidate damped Lyman-α system towards PKS 0439−433, using the Australia Telescope Compact Array (ATCA). The spectrum shows a weak absorption feature — at the 3.3σ level — which yields a lower limit of 730 K on the spin temperature of the system. No H i emission was detected: the 3σ upper limit on the H i mass of the abso...
متن کاملATCA ⋆ H i Observations of the NGC 6845 Galaxy Group
We present the results of ATCA H i line and 20-cm radio continuum observations of the galaxy Quartet NGC 6845. The H i emission extends over all four galaxies but can only be associated clearly with the two spiral galaxies, NGC 6845A and B, which show signs of strong tidal interaction. We derive a total H i mass of at least 1.8×10 M⊙, most of which is associated with NGC 6845A, the largest gala...
متن کاملATCA ⋆ H i Observations of the Peculiar Galaxy IC 2554
ATCA H i and radio continuum observations of the peculiar southern galaxy IC 2554 and its surroundings reveal typical signatures of an interacting galaxy group. We detected a large H i cloud between IC 2554 and the elliptical galaxy NGC 3136B. The gas dynamics in IC 2554 itself, which is sometimes described as a colliding pair, are surprisingly regular, whereas NGC 3136B was not detected. The H...
متن کاملResults of LUNASKA lunar Cherenkov observations at the ATCA
We present the results of our (the LUNASKA project’s) initial search for pulses of coherent radio Cherenkov radiation from UHE neutrino and cosmic ray interactions in the outer layers of the Moon. Three of the six 22 m antennas of the Australia Telescope Compact Array (ATCA) were implemented with our purpose-built pulse detection hardware and used to observe the Moon for two three-night periods...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1996
ISSN: 0074-1809
DOI: 10.1017/s0074180900081092