Gaia EDR3 Data of Post-AGB Stars with Overabundance of s-process Elements: Evolutionary Status and Binarity

dc.contributor.author	Parthasarathy, M
dc.date.accessioned	2023-02-02T08:57:01Z
dc.date.available	2023-02-02T08:57:01Z
dc.date.issued	2022-02
dc.identifier.citation	Research Notes of the AAS, Vol. 6, No. 2, 33	en_US
dc.identifier.issn	2515-5172
dc.identifier.uri	http://hdl.handle.net/2248/8134
dc.description	Open Access	en_US
dc.description	Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
dc.description.abstract	Kamath et al. analyzed Gaia EDR3 data of 18 post-asymptotic giant branch (AGB) supergiants having overabundance of s-process elements, some of which exhibit unusually low luminosities in disagreement with expectations of s-process nucleosynthesis. I have examined the Gaia RUWE statistics of these stars, and find that 13 have RUWE ≫ 1.4, suggesting they are most likely unresolved binaries that contain low-mass companions. The remaining five stars have RUWE < 1.4 and I find that their luminosities are in agreement with post-AGB evolutionary tracks.	en_US
dc.language.iso	en	en_US
dc.publisher	American Astronomical Society	en_US
dc.relation.uri	https://iopscience.iop.org/article/10.3847/2515-5172/ac54bb
dc.rights	© 2022. The Author(s)
dc.title	Gaia EDR3 Data of Post-AGB Stars with Overabundance of s-process Elements: Evolutionary Status and Binarity	en_US
dc.type	Article	en_US