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

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

Phi Eridani

Blue-hued star in the constellation Eridanus

Summary

Blue-hued star in the constellation Eridanus

| u-b = −0.38 | b-v = −0.12 | r-i = φ Eridani (Latinised as Phi Eridani) is a star in the constellation Eridanus. It is visible to the naked eye with an apparent visual magnitude of 3.55. The distance to this star, as determined using the parallax method, is around 154 light-years.

This is a B-type star with a stellar classification of B8IV-V, suggesting it shows traits of a main-sequence star and a subgiant. It is spinning rapidly with a projected rotational velocity of 250 km/s. This rotation is giving the star an oblate shape with an equator that is 17% larger than the polar radius. It has 3.55 times the mass of the Sun and radiates 135 times the solar luminosity from its outer atmosphere at an effective temperature of about 12,650 K.

Phi Eridani may form a wide binary star system with a 9th-magnitude star at lies an angular separation of 86″. This companion is a G-type main-sequence star with a stellar classification of G2V. It may also have a physical association with the naked-eye star Eta Horologii. It is a member of the Tucana-Horologium association, a 45(±4)-Myr-old group of stars that share a common motion through space.

References

| display-authors=1 | last1=Bell | first1=Cameron P. M.

| access-date=2016-10-13 | postscript=. }}

References

  1. (2021-08-10). "TESS survey of rotational and pulsational variability of mercury-manganese stars". Monthly Notices of the Royal Astronomical Society.
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 eridanus-(constellation) bayer-objects henry-draper-catalogue-objects hipparcos-objects bright-star-catalogue-objects durchmusterung-objects
Want to explore this topic further?

Ask Mako anything about Phi Eridani — 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