Surf Wiki
Save to docs
general/b-type-subgiants

From Surf Wiki (app.surf) — the open knowledge base

15 Canis Majoris

Variable star in the constellation Canis Major

Summary

Variable star in the constellation Canis Major

| b-v = | u-b = −0.96

15 Canis Majoris is a variable star in the southern constellation of Canis Major, located roughly 1,200 light years away from the Sun. It has the variable star designation EY Canis Majoris; 15 Canis Majoris is the Flamsteed designation. The star is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude of +4.8. It is moving away from the Earth with a heliocentric radial velocity of 28 km/s.

This is a B-type star with a stellar classification of B1 IV. Merle F. Walker discovered that 15 Canis Majoris is a variable star in 1955, and he published that discovery in 1956. It is classified as a Beta Cephei type variable star and its brightness varies from magnitude +4.79 down to +4.84 with a period of 0.18457 day. The star has 12.8 times the mass of the Sun and 6.8 times the Sun's radius. It is radiating 20,000 times the luminosity of the Sun from its photosphere at an effective temperature of 26,100 K.

References

| display-authors=1 | last1=Samus | first1=N. N.

References

  1. (April 1956). "The Light Variability of 15 Canis Majoris". Publications of the Astronomical Society of the Pacific.
  2. (December 1992). "A photometric study of beta Cephei stars. I. Frequency analyses". Astronomy & Astrophysics Supplement Series.
  3. "15 CMa".
  4. (2023). "The IACOB project. IX. Building a modern empirical database of Galactic O9 - B9 supergiants: Sample selection, description, and completeness". Astronomy and Astrophysics.
  5. Gontcharov, G. A.. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters.
  6. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data.
  7. (January 2009). "New magnetic field measurements of beta Cephei stars and Slowly Pulsating B stars". Astronomische Nachrichten.
  8. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics.
Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

b-type-subgiants beta-cephei-variables canis-major durchmusterung-objects flamsteed-objects henry-draper-catalogue-objects hipparcos-objects bright-star-catalogue-objects objects-with-variable-star-designations
Want to explore this topic further?

Ask Mako anything about 15 Canis Majoris — get instant answers, deeper analysis, and related topics.

Research with Mako

Free with your Surf account

Content sourced from Wikipedia, available under CC BY-SA 4.0.

This content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.

Report