Multiwavelength observations of EXO 0748-676. II. Emission-line behavior
We present optical and ultraviolet spectra, light curves, and Doppler tomograms of the low-mass X-ray binary EXO 0748-676. Using an extensive set of 15 emission-line tomograms, we show that, along with the usual emission from the stream and "hot spot," there is extended nonaxisymmetric emi...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
Institute of Physics Publishing
2006
|
| _version_ | 1826262669051559936 |
|---|---|
| author | Pearson, K Hynes, R Steeghs, D Jonker, P Haswell, C King, A O'Brien, K Nelemans, G Méndez, M |
| author_facet | Pearson, K Hynes, R Steeghs, D Jonker, P Haswell, C King, A O'Brien, K Nelemans, G Méndez, M |
| author_sort | Pearson, K |
| collection | OXFORD |
| description | We present optical and ultraviolet spectra, light curves, and Doppler tomograms of the low-mass X-ray binary EXO 0748-676. Using an extensive set of 15 emission-line tomograms, we show that, along with the usual emission from the stream and "hot spot," there is extended nonaxisymmetric emission from the disk rim. Some of the emission and Ha and Hβ absorption features lend weight to the hypothesis that part of the stream overflows the disk rim and forms a two phase medium. The data are consistent with a 1.35 M ⊙ neutron star with a main-sequence companion and hence a mass ratio q ≈ 0.34. © 2006. The American Astronomical Society. All rights reserved. |
| first_indexed | 2024-03-06T19:39:42Z |
| format | Journal article |
| id | oxford-uuid:203fae14-7c7a-436f-9b65-75e701b2fe5e |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:39:42Z |
| publishDate | 2006 |
| publisher | Institute of Physics Publishing |
| record_format | dspace |
| spelling | oxford-uuid:203fae14-7c7a-436f-9b65-75e701b2fe5e2022-03-26T11:26:25ZMultiwavelength observations of EXO 0748-676. II. Emission-line behaviorJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:203fae14-7c7a-436f-9b65-75e701b2fe5eEnglishSymplectic Elements at OxfordInstitute of Physics Publishing2006Pearson, KHynes, RSteeghs, DJonker, PHaswell, CKing, AO'Brien, KNelemans, GMéndez, MWe present optical and ultraviolet spectra, light curves, and Doppler tomograms of the low-mass X-ray binary EXO 0748-676. Using an extensive set of 15 emission-line tomograms, we show that, along with the usual emission from the stream and "hot spot," there is extended nonaxisymmetric emission from the disk rim. Some of the emission and Ha and Hβ absorption features lend weight to the hypothesis that part of the stream overflows the disk rim and forms a two phase medium. The data are consistent with a 1.35 M ⊙ neutron star with a main-sequence companion and hence a mass ratio q ≈ 0.34. © 2006. The American Astronomical Society. All rights reserved. |
| spellingShingle | Pearson, K Hynes, R Steeghs, D Jonker, P Haswell, C King, A O'Brien, K Nelemans, G Méndez, M Multiwavelength observations of EXO 0748-676. II. Emission-line behavior |
| title | Multiwavelength observations of EXO 0748-676. II. Emission-line behavior |
| title_full | Multiwavelength observations of EXO 0748-676. II. Emission-line behavior |
| title_fullStr | Multiwavelength observations of EXO 0748-676. II. Emission-line behavior |
| title_full_unstemmed | Multiwavelength observations of EXO 0748-676. II. Emission-line behavior |
| title_short | Multiwavelength observations of EXO 0748-676. II. Emission-line behavior |
| title_sort | multiwavelength observations of exo 0748 676 ii emission line behavior |
| work_keys_str_mv | AT pearsonk multiwavelengthobservationsofexo0748676iiemissionlinebehavior AT hynesr multiwavelengthobservationsofexo0748676iiemissionlinebehavior AT steeghsd multiwavelengthobservationsofexo0748676iiemissionlinebehavior AT jonkerp multiwavelengthobservationsofexo0748676iiemissionlinebehavior AT haswellc multiwavelengthobservationsofexo0748676iiemissionlinebehavior AT kinga multiwavelengthobservationsofexo0748676iiemissionlinebehavior AT obrienk multiwavelengthobservationsofexo0748676iiemissionlinebehavior AT nelemansg multiwavelengthobservationsofexo0748676iiemissionlinebehavior AT mendezm multiwavelengthobservationsofexo0748676iiemissionlinebehavior |