Gaia, Trumpler 16, and Eta Carinae
Kris Davidson, Greta Helmel, Roberta M. Humphreys
TL;DR
Gaia data suggests Eta Carinae is farther and more luminous than previously thought, and challenges the assumed membership of stars in Trumpler 16, affecting our understanding of this star cluster.
Contribution
The study uses Gaia parallaxes to revise the distance and membership of stars in Tr 16 and Eta Carinae, providing new insights into their properties.
Findings
Eta Carinae is likely more distant and luminous than previously estimated.
Many stars thought to be members of Tr 16 may not belong to the cluster.
Revised distances impact the understanding of the cluster's structure and stellar properties.
Abstract
Gaia parallaxes for the star cluster Tr 16 reveal a discrepancy in the oft-quoted distance of Eta Carinae. It is probably more distant and more luminous. Moreover, many presumed members may not belong to Tr 16.
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