• Source: R Leporis

R Leporis (R Lep), sometimes called Hind's Crimson Star, is a well-known variable star in the constellation Lepus, near its border with Eridanus.
It is a carbon star which appears distinctly red. It is named after famous British astronomer J. R. Hind, who observed it in 1845. Its apparent magnitude varies from +5.5 to +11.7 with a period of 418–441 days; recent measurements give a period of 427.07 days. There may be a secondary period of 40 years. Guandalini and Cristallo calculated the luminosity of Mira variables based on their periods. Using a period of 427.07 days, they calculated the bolometric luminosity to be 13,200 L☉.
R Leporis has often been reported as an intense smoky red color, although this is not pronounced when the star is near its maximum brightness. It is reddest when it is dimmest, which occurs every 14.5 months. During these periods it is a candidate for the most-visible reddest star, but this claim is questionable. The red coloration may be caused by carbon in the star's outer atmosphere filtering out the blue part of its visible light spectrum. The star's discoverer, Hind, reported that it appeared "like a drop of blood on a black field."

















References






External links


Best of the Advanced Observation Program: R Leporis Archived 2015-05-24 at the Wayback Machine
USA Today.com - NightSky: The Hare and the Dove
Smoky Mountain Astronomical Society - Hind's Crimson Star: R Leporis Archived 2016-03-03 at the Wayback Machine
Geody Hinds Crimson Star
Observations of R LEP from AAVSO
Astronomy picture of the day

Kata Kunci Pencarian:

• Alpha Leporis
• Zeta Leporis
• Gamma Leporis
• Homoeotricha leporis
• Beta Leporis
• Bintang karbon
• Trichuris
• Daftar bintang di rasi bintang Lepus
• Daftar spesies Aspergillus
• Daftar bintang terbesar
• R Leporis
• Lepus (constellation)
• Alpha Leporis
• Beta Leporis
• Crimson
• John Russell Hind
• T Leporis
• Mira variable
• Color index
• List of stars in Lepus