Stars/Cyans

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Beta Virginis[edit]

This is a visual image of beta Virginis. Its effective surface temperature is 6,132 K. Credit: Aladin at SIMBAD.

Beta Virginis has a surface Teff = 6,132 ± 26.[1] According to SIMBAD, beta Virginis is a high proper-motion star with spectral type equal to F9V. Beta Virginis is also known as LHS 2465, GJ 449, HD 102870, and HR 4540. It is an X-ray source per 2E,RBS,RX,1RXS, and is a double star.

Theta Ursae Majoris[edit]

This is an optical image in the visual range of Theta Ursae Majoris. It is listed in SIMBAD as an F7V spectral type star with a parallax of 74.19 mas. Credit: Aladin at SIMBAD.

Theta Ursae Majoris is a spectral type F7V star.[2] It has a surface temperature of 6300 ± 33 K.[3] Such an effective surface temperature has a Planckian black body peak wavelength of 476 nm which places this star at the high temperature end of the cyan band.

NGC 5236[edit]

Messier 83 in Hydra is shown in the image. Credit: David Malin, Anglo-Australian Observatory.

"The spiral galaxy, Messier 83, NGC 5236 [is shown in the image at right]. [The t]ri-colour photograph, exposures of 30, 30 and 35 minutes on hypersensitised plates, [is] in blue, green and red light respectively".[4]

See also[edit]

References[edit]

  1. Tabetha S. Boyajian, Harold A. McAlister, Gerard van Belle, Douglas R. Gies, Theo A. ten Brummelaar, Kaspar von Braun, Chris Farrington, P. J. Goldfinger, David O'Brien, J. Robert Parks, Noel D. Richardson, Stephen Ridgway, Gail Schaefer, Laszlo Sturmann, Judit Sturmann, Yamina Touhami , Nils H. Turner, Russel White (February 2012). "Stellar Diameters and Temperatures. I. Main-sequence A, F, and G Stars". The Astrophysical Journal 746 (1): 101. doi:10.1088/0004-637X/746/1/101. . See Table 10.
  2. Helmut A. Abt (January 2009). "MK Classifications of Spectroscopic Binaries". The Astrophysical Journal Supplement 180 (1): 117–8. doi:10.1088/0067-0049/180/1/117. 
  3. Tabetha S. Boyajian,; McAlister, Harold A.; van Belle, Gerard; Gies, Douglas R.; ten Brummelaar, Theo A.; von Braun, Kaspar; Farrington, Chris; Goldfinger, P. J. et al. (February 2012). "Stellar Diameters and Temperatures. I. Main-sequence A, F, and G Stars". The Astrophysical Journal 746 (1): 101. doi:10.1088/0004-637X/746/1/101. . See Table 10.
  4. David Malin (April 1997). "Anglo-Australian Observatory Newsletter". Australia: Anglo-Australian Observatory. Retrieved 2014-02-24.

External links[edit]