Observational Constraints on the Primordial Helium Abundance

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Observational Constraints on the Primordial Helium Abundance

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Skillman, Evan

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2017-05

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I will review recent progress on the observational determination of the primordial helium abundance (Yp). Presently, the best constraints on Yp come from observations of star forming regions in very metal-poor galaxies (although the impact of Yp on the CMB has been detected). Progress has come through the discovery of more very metal-poor galaxies and by extending spectral observations in to the near infrared with, for example, the Large Binocular Telescope.

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OLIVEFEST

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Olivefest: Astroparticle Physics Looking Forward 2017

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Skillman, Evan. (2017). Observational Constraints on the Primordial Helium Abundance. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/188248.

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