Astronomy:IC 4642
From HandWiki
| Nebula | |
|---|---|
 The IC 4642 nebula. | |
| Observation data: {{{epoch}}} epoch | |
| Class | Planetary nebula |
| Right ascension | 17h 13m 51s |
| Declination | -55 25’ 39” |
| Notable features | Helium and Nitrogen depleted |
IC 4642 is a planetary nebula located in the constellation of Ara. It is elliptical in shape with multiple shells. It is depleted in the elements helium and nitrogen.[1][2]
Central star
The central star in IC 4642 is a variable star with no definitive spectral classification. It has been referred to as an absorption line star. It may be accompanied by a sub-stellar companion object.[1]
References
- ↑ 1.0 1.1 Mohery, Mahmoud; Ali, Alaa; Hamam, Kholoud Ahmed; Khames, Aya Atef; Alsubaie, Abdullah Saad (2025-05-13). "Uncovering the integral spectral characteristics of the planetary nebula IC 4642" (in en). Scientific Reports 15 (1): 16539. doi:10.1038/s41598-025-00168-2. ISSN 2045-2322. PMC 12075569. https://www.nature.com/articles/s41598-025-00168-2?_gl=1*1r8tfkw*_up*MQ..*_gs*MQ..&gclid=EAIaIQobChMIp4_b3YGhjQMVUixECB2RkyzaEAAYAiAAEgIp__D_BwE&gbraid=0AAAAAplDoR-RUIXb9mMw5YXuYY-X-P18B.
- ↑ "IC 4642 - Planetary Nebula in Ara | TheSkyLive.com". https://theskylive.com/sky/deepsky/ic4642-object.
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