Radio Astrometry of The Close Active Binary Hr 5110
The close active binary HR 5110 was observed at six epochs over 26 days using a global very long baseline interferometry array at 15.4 GHz. We used phase referencing to determine the position of the radio centroid at each epoch with an uncertainty significantly smaller than the component separation....
| Main Authors: | , , , |
|---|---|
| Format: | Journal Article |
| Published: |
Institute of Physics Publishing
2015
|
| Online Access: | http://hdl.handle.net/20.500.11937/69740 |
| _version_ | 1848762122098442240 |
|---|---|
| author | Abbuhl, E. Mutel, R. Lynch, Christene Gï Edel, M. |
| author_facet | Abbuhl, E. Mutel, R. Lynch, Christene Gï Edel, M. |
| author_sort | Abbuhl, E. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The close active binary HR 5110 was observed at six epochs over 26 days using a global very long baseline interferometry array at 15.4 GHz. We used phase referencing to determine the position of the radio centroid at each epoch with an uncertainty significantly smaller than the component separation. After correcting for proper motion and parallax, we find that the centroid locations of all six epochs have barycenter separations consistent with an emission source located on the KIV secondary, and not in an interaction region between the stars or on the F primary. We used a homogeneous power-law gyrosynchrotron emission model to reproduce the observed flux densities and fractional circular polarization. The resulting ranges of mean magnetic field strength and relativistic electron densities are of the order of 10 G and 105cm-3, respectively, in the source region. |
| first_indexed | 2025-11-14T10:42:32Z |
| format | Journal Article |
| id | curtin-20.500.11937-69740 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:42:32Z |
| publishDate | 2015 |
| publisher | Institute of Physics Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-697402018-09-13T06:17:36Z Radio Astrometry of The Close Active Binary Hr 5110 Abbuhl, E. Mutel, R. Lynch, Christene Gï Edel, M. The close active binary HR 5110 was observed at six epochs over 26 days using a global very long baseline interferometry array at 15.4 GHz. We used phase referencing to determine the position of the radio centroid at each epoch with an uncertainty significantly smaller than the component separation. After correcting for proper motion and parallax, we find that the centroid locations of all six epochs have barycenter separations consistent with an emission source located on the KIV secondary, and not in an interaction region between the stars or on the F primary. We used a homogeneous power-law gyrosynchrotron emission model to reproduce the observed flux densities and fractional circular polarization. The resulting ranges of mean magnetic field strength and relativistic electron densities are of the order of 10 G and 105cm-3, respectively, in the source region. 2015 Journal Article http://hdl.handle.net/20.500.11937/69740 10.1088/0004-637X/811/1/33 Institute of Physics Publishing fulltext |
| spellingShingle | Abbuhl, E. Mutel, R. Lynch, Christene Gï Edel, M. Radio Astrometry of The Close Active Binary Hr 5110 |
| title | Radio Astrometry of The Close Active Binary Hr 5110 |
| title_full | Radio Astrometry of The Close Active Binary Hr 5110 |
| title_fullStr | Radio Astrometry of The Close Active Binary Hr 5110 |
| title_full_unstemmed | Radio Astrometry of The Close Active Binary Hr 5110 |
| title_short | Radio Astrometry of The Close Active Binary Hr 5110 |
| title_sort | radio astrometry of the close active binary hr 5110 |
| url | http://hdl.handle.net/20.500.11937/69740 |