Journal article
Lessons from the curious case of the ‘fastest’ star in Gaia DR2
- Abstract:
-
Gaia DR2 5932173855446728064 was recently proposed to be unbound from the Milky Way based on the −614.3 ± 2.5 km s−1 median radial velocity given in Gaia DR2. We obtained eight epochs of spectroscopic follow-up and find a very different median radial velocity of −56.5 ± 5.3 km s−1. If this difference were to be explained by binarity, then the unseen companion would be an intermediate-mass black hole; we therefore argue that the Gaia DR2 radial velocity must be in error. We find it likely that...
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- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Version of record, pdf, 3.5MB)
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(Version of record, zip, 602.1KB)
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- Publisher copy:
- 10.1093/mnras/stz253
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Authors
Bibliographic Details
- Publisher:
- Oxford University Press Publisher's website
- Journal:
- Monthly Notices of the Royal Astronomical Society Journal website
- Volume:
- 486
- Issue:
- 2
- Pages:
- 2618–2630
- Publication date:
- 2019-01-29
- Acceptance date:
- 2019-01-22
- DOI:
- EISSN:
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1365-2966
- ISSN:
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0035-8711
- Source identifiers:
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974193
Item Description
- Language:
- English
- Keywords:
- Pubs id:
-
pubs:974193
- UUID:
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uuid:0d036e39-ab97-477d-862c-d791beb0a070
- Local pid:
- pubs:974193
- Deposit date:
- 2019-02-17
Terms of use
- Copyright holder:
- Boubert et al
- Copyright date:
- 2019
- Notes:
- Copyright © 2019 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.
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