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Distance and Tangential Velocity of the Main Ionizing Star in the North America/Pelican Nebulae with Gaia EDR3

Kuhn, Michael A. and Hillenbrand, Lynne A. (2020) Distance and Tangential Velocity of the Main Ionizing Star in the North America/Pelican Nebulae with Gaia EDR3. Research Notes of the AAS, 4 (12). Art. No. 224. ISSN 2515-5172. doi:10.3847/2515-5172/abd18a.

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The Bajamar Star is an early O star that ionizes the North America/Pelican Nebulae. In projection, it is near the geometric center of the H II region, but appears to lie outside any of the main stellar subgroups. Furthermore, in Gaia DR2, there were slight discrepancies between this star and the rest of the system in parallax (2σ larger) and relative tangential velocity (~6 km s⁻¹). Using Gaia EDR3, we find that the parallax discrepancy has disappeared, but the velocity difference remains. These results are consistent with the star having escaped from a subgroup.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Kuhn, Michael A.0000-0002-0631-7514
Additional Information:© 2020 The American Astronomical Society. Published 2020 December 10. This work is based on data from ESA's Gaia mission (Gaia Collaboration et al. 2016), processed by the Data Processing and Analysis Consortium, funded by national institutions, particularly those participating in the Gaia Multilateral Agreement.
Group:Astronomy Department
Funding AgencyGrant Number
Gaia Multilateral AgreementUNSPECIFIED
Issue or Number:12
Record Number:CaltechAUTHORS:20201214-153353750
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Official Citation:Michael A. Kuhn and Lynne A. Hillenbrand 2020 Res. Notes AAS 4 224
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107076
Deposited By: Tony Diaz
Deposited On:15 Dec 2020 00:14
Last Modified:16 Nov 2021 18:59

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