Open cluster Messier 37 hosts a planetarynebula, study finds
Planetary nebulae are expanding shells of gas and dust that have been ejected from a star during the process of its evolution from a
"The nebula was discovered and classified as a PN candidate by Sabin from IPHAS [INT Photometric H-Alpha Survey] imagery. Here we present new, high resolution radial velocity data that confirm this rare OC-PN link," the researchers wrote in the paper. According to the study, IPHASX J055226.2+323724 is a large , bipolar and evolved PN with a low surface brightness. The PN has a patchy internal structure and its emission line spectra suggest Type-I chemistry. The nebula's central star is a white dwarf with a final mass of about 0.63Summing up the results, the authors of the paper noted that IPHASX J055226.2+323724 is so far only the third known PN in a Galactic open.
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