Quote:
Originally Posted by Bassnut
Sorry for the confusion guys. What catalog is "N" ?
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An article titled "Optical Spectra of Supernova remnants" by Danziger and Dennefeld (1976) (
Can be downloaded here) makes reference to N185 but fails to give a reference to the catalog.
Given that article Chatgpt was able to provide the following
Quote:
Object N185 is a region of ionized hydrogen gas located in the Large Magellanic Cloud (LMC), a satellite galaxy of the Milky Way. It is also known as LHA 120-N 185 or DEM L 106.
The region is characterized by its strong emission in the hydrogen-alpha spectral line, indicating the presence of ionized hydrogen gas excited by nearby hot stars. Object N185 is a type of emission nebula, also known as an HII region, and it is believed to be a site of ongoing star formation.
The region was first cataloged by the Hubble Space Telescope in the mid-1970s, and subsequent studies have used it as a benchmark for understanding the properties of HII regions in other galaxies. The article referenced in your question, published in the Publications of the Astronomical Society of the Pacific in 1976, may have been one of the early studies of Object N185.
Overall, Object N185 is a fascinating astronomical object that provides insight into the ongoing process of star formation and the properties of ionized gas in the universe.
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ChatGPT also provided the following on LHA 120-N
Quote:
LHA 120-N is a catalog of HII regions (regions of ionized hydrogen gas) in the Large Magellanic Cloud (LMC), a satellite galaxy of the Milky Way. It is part of the "List of HII Regions in the Large Magellanic Cloud" catalog, which was compiled by astronomers at the European Southern Observatory (ESO) in the 1980s.
The LHA catalog provides a systematic way of identifying and studying HII regions in the LMC, which is an important target for astronomers due to its proximity and relatively low levels of dust extinction compared to the Milky Way. Each HII region in the catalog is assigned a unique identifier, such as LHA 120-N, which indicates its location within the LMC.
In the case of LHA 120-N, the "120" indicates its position in the LHA catalog, while the "N" indicates that it is located in the northern half of the LMC. The "LHA" prefix stands for "List of HII Regions in the Large Magellanic Cloud."
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ChatGPT can't be relied upon for correct information so this would need to be verified with an authoritative sources before taking it to be gospel.
Nice image by the way.
Cheers,
Erick