Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optical observations of the nearby galaxy NGC 2366 through narrowband
  H$\alpha$ and SII filters. Supernova remnants status   We present detection of 67 HII regions and two optical supernova remnant
(SNR) candidates in the nearby irregular galaxy NGC 2366. The SNR candidates
were detected by applying [SII]/H$\alpha$ ratio criterion to observations made
with the 2-m RCC telescope at Rozhen National Astronomical Observatory in
Bulgaria. In this paper we report coordinates, diameters, H$\alpha$ and [SII]
fluxes for detected objects across the two fields of view in NGC 2366 galaxy.
Using archival XMM-Newton observations we suggest possible X-ray counterparts
of two optical SNR candidates. Also, we discard classification of two previous
radio SNR candidates in this galaxy, since they appear to be background
galaxies.

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The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
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The categories of this paper are: alg-geom
2
The categories of this paper are: math
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The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-th
1
The categories of this paper are: cs
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The categories of this paper are: chem-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: q-bio
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The categories of this paper are: q-fin
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The categories of this paper are: supr-con
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The categories of this paper are: quant-ph
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The categories of this paper are: solv-int