Glossary term: F-type Star

Also known as F star or F-star

Description: An F star is one whose "surface" temperature (the temperature of the layer in the star from which its light is emitted also known as effective temperature) is between 6000 and 7500 kelvins. An F star is identified by the strengthening of ionised calcium and some atomic metals and the weakening of hydrogen absorption lines in its spectrum. Polaris (the North Star) is an example of an F star.

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Term and definition status: This term and its definition is still awaiting approval

The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".