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NGC 7500



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Arcsecond Positions of UGC Galaxies
We present accurate B1950 and J2000 positions for all confirmed galaxiesin the Uppsala General Catalog (UGC). The positions were measuredvisually from Digitized Sky Survey images with rms uncertaintiesσ<=[(1.2")2+(θ/100)2]1/2,where θ is the major-axis diameter. We compared each galaxymeasured with the original UGC description to ensure high reliability.The full position list is available in the electronic version only.

Neutral hydrogen absorption by galaxies and implications for the soft X-ray background
Results are presented from a search for neutral hydrogen absorption inthe 21-cm spectra of 59 radio continuum sources in the proximity ofspiral and lenticular galaxies using the Arecibo radio telescope. Fivegalaxies showed possible but uncertain absorption. For the 54 othersources, the column density of the neutral hydrogen in the interveningmaterial is well below 2 x 10 to the 19th/cu cm or the spin temperatureis at least one order of magnitude above the microwave backgroundtemperature. For these cases, subthermal effects are not hidingappreciable amounts of neutral hydrogen.

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Observation and Astrometry data

Right ascension:23h10m29.80s
Aparent dimensions:1.66′ × 1.072′

Catalogs and designations:
Proper Names   (Edit)
NGC 2000.0NGC 7500

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