Improving distance estimates to nearby bright stars: Combining astrometric data from Hipparcos, Nano-JASMINE and Gaia
(2013) International Astronomical Union, Symposium 289: Advancing the Physics of Cosmic Distances 289. p.414-417- Abstract
- Starting in 2013, Gaia will deliver highly accurate astrometric data, which eventually will supersede most other stellar catalogues in accuracy and completeness. It is, however, limited to observations from magnitude 6 to 20 and will therefore not include the brightest stars. Nano-JASMINE, an ultrasmall Japanese astrometry satellite, will observe these bright stars, but with much lower accuracy. Hence, the Hipparcos catalogue from 1997 will likely remain the main source of accurate distances to bright nearby stars. We are investigating how this might be improved by optimally combining data from all three missions through a joint astrometric solution. This would take advantage of the unique features of each mission: the historic bright-star... (More)
- Starting in 2013, Gaia will deliver highly accurate astrometric data, which eventually will supersede most other stellar catalogues in accuracy and completeness. It is, however, limited to observations from magnitude 6 to 20 and will therefore not include the brightest stars. Nano-JASMINE, an ultrasmall Japanese astrometry satellite, will observe these bright stars, but with much lower accuracy. Hence, the Hipparcos catalogue from 1997 will likely remain the main source of accurate distances to bright nearby stars. We are investigating how this might be improved by optimally combining data from all three missions through a joint astrometric solution. This would take advantage of the unique features of each mission: the historic bright-star measurements of Hipparcos, the updated bright-star observations of Nano-JASMINE, and the very accurate reference frame of Gaia. The long temporal baseline between the missions provides additional benefits for the determination of proper motions and binary detection, which indirectly improve the parallax determination further. We present a quantitative analysis of the expected gains based on simulated data for all three missions. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/5337115
- author
- Michalik, Daniel LU ; Lindegren, Lennart LU ; Hobbs, David LU ; Lammers, Uwe and Yamada, Yoshiyuki
- organization
- publishing date
- 2013
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- astrometry, catalogs, methods: data analysis, methods: statistical, reference systems
- host publication
- Advancing the Physics of Cosmic Distances, Proceedings of the International Astronomical Union, IAU Symposium, Volume 289, pp. 414-417
- volume
- 289
- pages
- 4 pages
- publisher
- International Astronomical Union
- conference name
- International Astronomical Union, Symposium 289: Advancing the Physics of Cosmic Distances
- conference dates
- 0001-01-02
- DOI
- 10.1017/S1743921312021849
- language
- English
- LU publication?
- yes
- id
- d2e5e21b-500f-4523-b8da-8d3e92135481 (old id 5337115)
- date added to LUP
- 2016-04-04 11:01:53
- date last changed
- 2018-11-21 21:02:14
@inproceedings{d2e5e21b-500f-4523-b8da-8d3e92135481, abstract = {{Starting in 2013, Gaia will deliver highly accurate astrometric data, which eventually will supersede most other stellar catalogues in accuracy and completeness. It is, however, limited to observations from magnitude 6 to 20 and will therefore not include the brightest stars. Nano-JASMINE, an ultrasmall Japanese astrometry satellite, will observe these bright stars, but with much lower accuracy. Hence, the Hipparcos catalogue from 1997 will likely remain the main source of accurate distances to bright nearby stars. We are investigating how this might be improved by optimally combining data from all three missions through a joint astrometric solution. This would take advantage of the unique features of each mission: the historic bright-star measurements of Hipparcos, the updated bright-star observations of Nano-JASMINE, and the very accurate reference frame of Gaia. The long temporal baseline between the missions provides additional benefits for the determination of proper motions and binary detection, which indirectly improve the parallax determination further. We present a quantitative analysis of the expected gains based on simulated data for all three missions.}}, author = {{Michalik, Daniel and Lindegren, Lennart and Hobbs, David and Lammers, Uwe and Yamada, Yoshiyuki}}, booktitle = {{Advancing the Physics of Cosmic Distances, Proceedings of the International Astronomical Union, IAU Symposium, Volume 289, pp. 414-417}}, keywords = {{astrometry; catalogs; methods: data analysis; methods: statistical; reference systems}}, language = {{eng}}, pages = {{414--417}}, publisher = {{International Astronomical Union}}, title = {{Improving distance estimates to nearby bright stars: Combining astrometric data from Hipparcos, Nano-JASMINE and Gaia}}, url = {{http://dx.doi.org/10.1017/S1743921312021849}}, doi = {{10.1017/S1743921312021849}}, volume = {{289}}, year = {{2013}}, }