Neutral hydrogen in the Andromeda Nebula - IV. Single-velocity contour maps
نویسندگان
چکیده
منابع مشابه
"Neutral hydrogen survey of andromeda galaxy": addendum.
mum) and the temperature coefficient of d-c output voltage is 1 mv per degree Celsius. A negative capacitance circuit is provided which improves the overall frequency response of the amplifier but unavoidably adds noise to the input signal if large stray capacitances are compensated. Signals of 40 pv through 7 Mohm (microelectrode in saline) can be faithfully reproduced. The amplifier has been ...
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Donaldson, H. H., J. Comp. Neur., Wistar Inst., Philadelphia, 19, 1909, (155-167). 2 Kellicott, W. E., Amer. J. Anat., Wistar Inst., Philadelphia, 8, 1908, (319-353). 3Donaldson, H. H., On the percentage of water in the brain of the summer flounder (Paralichthys dentatus) according to the body weight. MS. 1905. 4 Scott, G. G., Proc. Soc. Exp. Biol. Med., New York, 9, 1912. 5 Donaldson, H. H., J...
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Lying at a projected distance of 40 or 9 kpc from the centre of M31, Andromeda IV is an enigmatic object first discovered during van den Bergh’s search for dwarf spheroidal companions to M31. Being bluer, more compact and higher surface brightness than other known dwarf spheroidals, it has been suggested that And IV is either a relatively old ‘star cloud’ in the outer disk of M31 or a backgroun...
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AB S TRACT We used the University of New South Wales Infrared Fabry-Perot (UNSWIRF) to investigate the photodissociation region (PDR) associated with the `elephant trunk' features in the M16 H ii region (the Eagle nebula). Images were made in the H2 1±0 S(1) and 2±1 S(1) lines at 2.122 and 2.248mm, respectively, and in the H i Br g line at 2.166mm. The trunk-like features have an average H2 num...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1983
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/205.3.787