List of stars with resolved images

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The following is a list of stars whose images have been resolved beyond a point source. Aside from the Sun, stars are tremendously small in apparent size, requiring the use of special high-resolution equipment to image. For example, the first star, other than the Sun, to be directly imaged was Betelgeuse. It has an angular diameter of only 50 milliarcseconds (mas).[1]

List[edit]

An incomplete list is as follows:

Star Angular diameter Radius (R) Distance Imager
The Sun 30 arcminutes 1 1 au Resolvable with the naked eye.
Also, see solar telescope
R Doradus 57 ± 5 mas 370 ± 50 204 ± 9 ly New Technology Telescope[2]
Betelgeuse 50 mas 630 643 ± 146 ly Aperture Masking Interferometry, Hubble[1]
Mira (Omicron Ceti) 50 mas up to 700 420 ly Hubble[3]
Altair 3.2 mas 1.66 ± 0.01 (polar)
2.02 ± 0.01 (equator)
16.77 ± 0.08 ly MIRC instrument on the CHARA Array[4]
Epsilon Aurigae 2.27 mas (A component) 3.7 ± 0.7 (A component)
5.9 ± 0.1 (B component)
ca. 2000 ly MIRC instrument on the CHARA Array[5]
Beta Cassiopeiae 1.70 ± 0.04 mas 3.1 ± 0.1 (polar)
3.8 ± 0.1 (equator)
54.7 ± 0.3 ly MIRC instrument on the CHARA Array[6]
Rasalhague (Alpha Ophiuchi A) 2.39 ± 0.01 (polar)
2.87 ± 0.02 (equator)
48.6 ± 0.8 ly MIRC instrument on the CHARA Array[7]
Alderamin (Alpha Cephei) 1.35 ± 0.02 mas (polar)
1.75 ± 0.03 mas (equatorial)
2.20 ± 0.04 (polar)
2.74 ± 0.04 (equator)
48.8 ± 0.36 ly MIRC instrument on the CHARA Array[7]
Regulus (Alpha Leonis A) 1.24 ± 0.02 mas 3.2 ± 0.1 (polar)
4.2 ± 0.1 (equator)
79.3 ± 0.7 ly MIRC instrument on the CHARA Array[6]
Algol (Beta Persei ABC) 0.88 ± 0.05 mas (A component)
1.12 ± 0.07 mas (B component)
0.56 ± 0.10 mas (C component)
4.13 (A component)
3 (B component)
0.9 (C component)
93 ± 2 ly MIRC instrument on the CHARA Array[8]
Proxima Centauri 1.02 ± 0.08 mas 0.141 ± 0.007 4.246 ± 0.006 ly Very Large Telescope
Beta Lyrae 0.46 mas (A component) 6 (A component) 960 ± 50 ly MIRC instrument on the CHARA Array[9]

See also[edit]

References[edit]

  1. ^ a b H.Uitenbroek; Dupree, A. K.; Gilliland, R. L. (1998). "Spatially Resolved Hubble Space Telescope Spectra of the Chromosphere of alpha Orionis". Astronomical Journal. 116 (5): 2501. Bibcode:1998AJ....116.2501U. doi:10.1086/300596. 
  2. ^ "The Biggest Star in the Sky". ESO. March 11, 1997. Retrieved 2010-06-26. 
  3. ^ Nemiroff, R.; Bonnell, J., eds. (October 11, 1998). "Resolving Mira". Astronomy Picture of the Day. NASA. Retrieved 2012-10-24. 
  4. ^ J.D. Monnier; et al. (2007). "Imaging the Surface of Altair". Science. 317 (5836): 342–5. arXiv:0706.0867Freely accessible. Bibcode:2007Sci...317..342M. doi:10.1126/science.1143205. PMID 17540860. 
  5. ^ B. Kloppenborg; et al. (2010). "Infrared images of the transiting disk in the Epsilon Aurigae system". Nature. 464 (7290): 370–2. arXiv:1004.2464Freely accessible. Bibcode:2010Natur.464..870K. doi:10.1038/nature08968. 
  6. ^ a b X. Che; et al. (2011). "Colder And Hotter: Interferometric Imaging Of Beta Cassiopeiae And Αlpha Leonis". The Astrophysical Journal. 732: 68. arXiv:1105.0740Freely accessible. Bibcode:2011ApJ...732...68C. doi:10.1088/0004-637X/732/2/68. 
  7. ^ a b M. Zhao; et al. (2009). "Imaging And Modeling Rapidly Rotating Stars: Alpha Cephei And Alpha Ophiuchi". The Astrophysical Journal. 701: 209. arXiv:0906.2241Freely accessible. Bibcode:2009ApJ...701..209Z. doi:10.1088/0004-637X/701/1/209. 
  8. ^ Baron, F.; Monnier, J.; Pedretti, E.; Zhao, M.; Schaefer, G.; Parks, R.; Che, X.; Thureau, N.; ten Brummelaar, T. A.; McAlister, H. A.; Ridgway, S. T.; Farrington, C.; Sturmann, J.; Sturmann, L.; Turner, N. (2012). "Imaging the Algol Triple System in the H Band with the CHARA Interferometer". The Astrophysical Journal. 752 (1): 20. arXiv:1205.0754Freely accessible. Bibcode:2012ApJ...752...20B. doi:10.1088/0004-637X/752/1/20. Retrieved 18 February 2015. 
  9. ^ M. Zhao; et al. (2008). "First Resolved Images Of The Eclipsing And Interacting Binary Beta Lyrae". The Astrophysical Journal. 684: L95. arXiv:0808.0932Freely accessible. Bibcode:2008ApJ...684L..95Z. doi:10.1086/592146.