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SU Cygni is a triple star system in the northern constellation of Cygnus,abbreviated SU Cyg. The primary component of the system is a classical Cepheid variable with a period of 3.8455473 days. The changing luminosity of this star causes the system to vary in brightness from a peak apparent visual magnitude of 6.44 down to magnitude 7.22 over the course of its cycle. The distance to this system is approximately 3,200 light years based on parallax measurements. It is a member of the Turner 9 open cluster of stars.
References
- ↑ "Astronomer David Turner's Website". www.ap.smu.ca. Retrieved 2022-12-30.
- ↑ Journal of the RASC Archived 2013-02-01 at the Wayback Machine
- ↑ Turner, David G. (1996). "The Progenitors of Classical Cepheid Variables". Journal of the Royal Astronomical Society of Canada. 90: 82. Bibcode:1996JRASC..90...82T.
- ↑ Turner, David G. (2010). "The PL calibration for Milky Way Cepheids and its implications for the distance scale". Astrophysics and Space Science. 326 (2): 219–231. arXiv: 0912.4864 . Bibcode:2010Ap&SS.326..219T. doi:10.1007/s10509-009-0258-5. S2CID 119264970.
- ↑ Turner, D. G.; Guzik, Joyce Ann; Bradley, Paul A. (2009). "AIP Conference Proceedings – Polaris and its Kin". Stellar Pulsation: Challenges for Theory and Observation. 1170: 59–68. arXiv: 0907.3245 . Bibcode:2009AIPC.1170...59T. doi:10.1063/1.3246569. S2CID 15551157.
- ↑ "27810 Daveturner (1993 OC2)". ssd.jpl.nasa.gov. Retrieved 2022-12-30.
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