Variable nebula

<h2 id="see-also">See also</h2>
<ul><li><a href="/facts/McNeil%2527s_Nebula/a4GCpNWw">McNeil's Nebula</a><a class="footnote-ref" id="fnref:1" href="#fn:1"><sup>1</sup></a></li>
<li><a href="/facts/NGC_1555/RS6zV0zw">NGC 1555</a> (Hind's Variable Nebula)<a class="footnote-ref" id="fnref:2" href="#fn:2"><sup>2</sup></a></li>
<li><a href="/facts/NGC_2261/vvoKz7x1">NGC 2261</a> (Hubble's Variable Nebula)<a class="footnote-ref" id="fnref:3" href="#fn:3"><sup>3</sup></a></li>
<li><a href="/facts/NGC_6729/2myVH2Yo">NGC 6729</a> (R Coronae Australis Nebula)<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a></li></ul>

<h2 id="external-links">External links</h2>
<ul><li><a href="https://www.youtube.com/watch?v=LeiVERr2J2Q">Astrobiscuit: Seeing The Speed Of Light</a> fun and educational video about variable nebula and the amateur community observing them</li></ul>

<h2 id="references">References</h2>

<ol>
<li id="fn:1"><p>Andrews, Sean M.; Rothberg, Barry; Simon, Theodore (2004-07-20). "Mid-Infrared and Submillimeter Observations of the Illuminating Source of M c Neil's Variable Nebula". The Astrophysical Journal. 610 (1): L45 – L48. arXiv:astro-ph/0406089. doi:10.1086/423031. ISSN 0004-637X. S2CID 6180841. <a href="https://iopscience.iop.org/article/10.1086/423031" target="_blank">https://iopscience.iop.org/article/10.1086/423031</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li>
<li id="fn:2"><p>Lampland, C. O. (December 1936). "Hind's Variable Nebula". Publications of the Astronomical Society of the Pacific. 48: 318. doi:10.1086/124737. ISSN 0004-6280. S2CID 121683912. <a href="http://iopscience.iop.org/article/10.1086/124737" target="_blank">http://iopscience.iop.org/article/10.1086/124737</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li>
<li id="fn:3"><p>Close, L. M.; Roddier, F.; Hora, J. L.; Graves, J. E.; Northcott, M.; Roddier, C.; Hoffman, W. F.; Dayal, A.; Fazio, G. G.; Deutsch, L. K. (November 1997). "Adaptive Optics Infrared Imaging Polarimetry and Optical HST Imaging of Hubble's Variable Nebula (R Monocerotis/NGC 2261): A Close Look at a Very Young Active Herbig Ae/Be star". The Astrophysical Journal. 489 (1): 210–221. doi:10.1086/304777. ISSN 0004-637X. S2CID 120197024. <a href="https://iopscience.iop.org/article/10.1086/304777" target="_blank">https://iopscience.iop.org/article/10.1086/304777</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li>
<li id="fn:4"><p>Graham, J. A.; Phillips, A. C. (February 1987). "Rapid variability of the R Coronae Australis reflection nebula NGC 6729". Publications of the Astronomical Society of the Pacific. 99: 91. doi:10.1086/131959. ISSN 0004-6280. S2CID 120612709. <a href="http://iopscience.iop.org/article/10.1086/131959" target="_blank">http://iopscience.iop.org/article/10.1086/131959</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li>
</ol>

Variable nebula open-in-new

Variable nebula