Astronomy:IC 1266

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IC 1266
Nebula
Planetary nebula
File:300px
IC 1266 imaged by Legacy Surveys
Observation data: J2000.0 epoch
Right ascension 17h 45m 35.29s
Declination−46° 05′ 23.7″
Distance12,400[1] ly
ConstellationAra
DesignationsIC 1266, Tc 1[2]
See also: Lists of nebulae

IC 1266 (also known as Tc 1) is a planetary nebula located in the southern constellation of Ara. It is a compact emission nebula surrounding a dying star, appearing stellar due to its small angular size and faint gaseous spectrum. Discovered in 1894 by astronomer Williamina Fleming, IC 1266 lies approximately 12,400 light-years from Earth and is best observed from the Southern Hemisphere.[3][4]

Observation and Characteristics

IC 1266 has an apparent visual magnitude of 11.2 and spans about 0.2 arcminutes in diameter, making it one of the smaller known planetary nebulae.[5] The central star is an O-type star HD 161044, it has a P Cygni type profile.[6]

Spectroscopic and other studies reveal low-excitation lines typical of young planetary nebulae, with abundances of elements and molecules are found like[7] the first fullerenes in space like C60 and C70[8][9] were discovered in this nebula in 2010 using the Spitzer Space Telescope. These molecules are therefore the largest found in space.[10]

References

  1. ↑ Stanghellini, Letizia; Shaw, Richard A.; Villaver, Eva (2008-12-10). "The Magellanic Cloud Calibration of the Galactic Planetary Nebula Distance Scale" (in en). The Astrophysical Journal 689 (1): 194–202. doi:10.1086/592395. ISSN 0004-637X. Bibcode: 2008ApJ...689..194S. https://iopscience.iop.org/article/10.1086/592395. 
  2. ↑ "IC 1266". https://simbad.cds.unistra.fr/mobile/object.html?object_name=IC%201266. 
  3. ↑ "IC 1266 - Planetary Nebula in Ara | TheSkyLive" (in en). https://theskylive.com/sky/deepsky/ic1266-object. 
  4. ↑ "Index Catalog Objects: IC 1250 - 1299". https://cseligman.com/text/atlas/ic12a.htm. 
  5. ↑ Ford, Dominic. "IC1266 (Planetary nebula)" (in en). https://in-the-sky.org//data/object.php?id=IC1266. 
  6. ↑ Feibelman, W. A. (November 1983). "IUE observations of the low-excitation planetary nebula Tc-1" (in en). Publications of the Astronomical Society of the Pacific 95: 886. doi:10.1086/131266. ISSN 0004-6280. Bibcode: 1983PASP...95..886F. http://iopscience.iop.org/article/10.1086/131266. 
  7. ↑ Pottasch, S. R.; Surendiranath, R.; Bernard-Salas, J. (2011-07-01). "Abundances in planetary nebulae: NGC 1535, NGC 6629, He2-108, and Tc1" (in en). Astronomy & Astrophysics 531: A23. doi:10.1051/0004-6361/201116669. ISSN 0004-6361. Bibcode: 2011A&A...531A..23P. https://www.aanda.org/articles/aa/abs/2011/07/aa16669-11/aa16669-11.html. 
  8. ↑ Thakur, A.; Lohr, P. J.; Bernal, J. J.; Asaduzzaman, A.; Muralidharan, K.; Zega, T. J.; Ziurys, L. M. (2025-11-01). "A Theoretical Study of Carbon Nanotube Formation: Carriers of the Diffuse Interstellar Bands?". The Astrophysical Journal 993 (1): 18. doi:10.3847/1538-4357/ae06a3. ISSN 0004-637X. Bibcode: 2025ApJ...993...18T. 
  9. ↑ Aleman, Isabel; Leal-Ferreira, Marcelo L; Cami, Jan; Akras, Stavros; Ochsendorf, Bram; Wesson, Roger; Morisset, Christophe; Cox, Nick L J et al. (2019-12-01). "Characterization of the planetary nebula Tc 1 based on VLT X-shooter observations" (in en). Monthly Notices of the Royal Astronomical Society 490 (2): 2475–2494. doi:10.1093/mnras/stz2654. ISSN 0035-8711. https://academic.oup.com/mnras/article/490/2/2475/5573278. 
  10. ↑ Cami, Jan; Bernard-Salas, Jeronimo; Peeters, Els; Malek, Sarah Elizabeth (2010-09-03). "Detection of C 60 and C 70 in a Young Planetary Nebula" (in en). Science 329 (5996): 1180–1182. doi:10.1126/science.1192035. ISSN 0036-8075. https://www.science.org/doi/10.1126/science.1192035. 



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