Session

poster

Location

Space Dynamics Laboratory, Auditorium Rooms D & E

Start Date

5-9-2022 9:55 AM

End Date

5-9-2022 10:45 AM

Description

Cepheid variable stars have been used as “standard candles” to find distances to other stars. The fluctuation of brightness in variable stars can help identify their distance by comparing the apparent luminosity to the absolute luminosity as determined by a relationship between the period of the fluctuation and the absolute luminosity of the star (called the period-luminosity relationship). Stars that have shorter periods with a lower luminosity than Cepheid variables can be classified as RR Lyrae stars, which are particularly useful for estimating distances to the oldest stellar clusters.

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May 9th, 9:55 AM May 9th, 10:45 AM

An Estimate of the Distance to AN Ser Using an RR Lyrae Period-Luminosity Relationship

Space Dynamics Laboratory, Auditorium Rooms D & E

Cepheid variable stars have been used as “standard candles” to find distances to other stars. The fluctuation of brightness in variable stars can help identify their distance by comparing the apparent luminosity to the absolute luminosity as determined by a relationship between the period of the fluctuation and the absolute luminosity of the star (called the period-luminosity relationship). Stars that have shorter periods with a lower luminosity than Cepheid variables can be classified as RR Lyrae stars, which are particularly useful for estimating distances to the oldest stellar clusters.