RS Telescopii

RS Telescopii
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Telescopium
Right ascension 18h 18m 51.22076s [1]
Declination −46° 32′ 53.4122″ [1]
Spectral typeC (R4)[2]

RS Telescopii is a star in the constellation Telescopium.

It is a rare R Coronae Borealis variable—an extremely hydrogen-deficient supergiant thought to have arisen as the result of the merger of two white dwarfs; fewer than 100 have been discovered as of 2012.[3]

It has a maximum magnitude of 9.6 and a minimum magnitude 16.5.[2] As of 2012, four dimmings have been observed.[3]


It has under 55% the mass of the Sun and an effective (surface) temperature of around 6750 K.[4]


References

  1. 1 2 "V* RS Telescopii -- Variable Star of R CrB type". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 3 July 2014.
  2. 1 2 BSJ (11 November 2011). "RX Telescopii". AAVSO Website. American Association of Variable Star Observers. Retrieved 26 June 2014.
  3. 1 2 Tisserand; Clayton; Welch; Pilecki; Wyrzykowski; Kilkenny (2012). "The Ongoing Pursuit of R Coronae Borealis Stars: ASAS-3 Survey Strikes Again". Astronomy & Astrophysics. 551: 22. arXiv:1211.2475Freely accessible. Bibcode:2013A&A...551A..77T. doi:10.1051/0004-6361/201220713. A77.
  4. ↑ Stasińska, G.; Szczerba, R.; Schmidt, M.; Siódmiak, N. (2006). "Post-AGB stars as testbeds of nucleosynthesis in AGB stars". Astronomy and Astrophysics. 450 (2): 701. arXiv:astro-ph/0601504Freely accessible. Bibcode:2006A&A...450..701S. doi:10.1051/0004-6361:20053553.


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