A REASSESSMENT OF THE KINEMATICS OF PV CEPHEI BASED ON ACCURATE PROPER MOTION MEASUREMENTS
Fuente:
Redalyc
Guardado en:
| Autor principal: | |
|---|---|
| Formato: | Artículo científico |
| Lenguaje: | en |
| Publicado: |
Universidad Nacional Autónoma de México
2010
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1876462191574515712 |
|---|---|
| author | L. Loinard |
| author_facet | L. Loinard |
| contents | A REASSESSMENT OF THE KINEMATICS OF PV CEPHEI BASED ON ACCURATE PROPER MOTION MEASUREMENTS L. Loinard L. F. Rodríguez L. Gómez J. Cantó A. C. Raga A. A. Goodman H. G. Arce Física, Astronomía y Matemáticas Astrometry stars: pre main sequence ISM: jets and outflows ISM: individual (PV Cep) We present two Very Large Array observations of the pre-main-sequence star PV Cephei, taken with a separation of 10.5 years. These data show that the proper motions of this star are ¿ cos d = +10.9±3.0 mas yr¿1; ¿a = +0.2±1.8 mas yr-1, very similar to those -previously known¿ of HD 200775, the B2Ve star that dominates the illumination of the nearby reflection nebula NGC 7023. This result suggests that PV Cephei is not a rapidly moving runaway star as suggested by previous studies. The large velocity of PV Cephei had been inferred from the systematic eastward displacement of the bisectors of successive pairs of Herbig Haro knots along its flow. These systematic shifts might instead result from an intrinsic asymmetry in the ejection mechanisms, or in the distribution of the circumstellar material. 2010 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57115522016 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.2 Vol.46 |
| format | Artículo científico |
| id | redalyc_57115522016 |
| institution | Redalyc |
| language | en |
| publishDate | 2010 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | A REASSESSMENT OF THE KINEMATICS OF PV CEPHEI BASED ON ACCURATE PROPER MOTION MEASUREMENTS L. Loinard Física, Astronomía y Matemáticas Astrometry stars: pre main sequence ISM: jets and outflows ISM: individual (PV Cep) A REASSESSMENT OF THE KINEMATICS OF PV CEPHEI BASED ON ACCURATE PROPER MOTION MEASUREMENTS L. Loinard L. F. Rodríguez L. Gómez J. Cantó A. C. Raga A. A. Goodman H. G. Arce Física, Astronomía y Matemáticas Astrometry stars: pre main sequence ISM: jets and outflows ISM: individual (PV Cep) We present two Very Large Array observations of the pre-main-sequence star PV Cephei, taken with a separation of 10.5 years. These data show that the proper motions of this star are ¿ cos d = +10.9±3.0 mas yr¿1; ¿a = +0.2±1.8 mas yr-1, very similar to those -previously known¿ of HD 200775, the B2Ve star that dominates the illumination of the nearby reflection nebula NGC 7023. This result suggests that PV Cephei is not a rapidly moving runaway star as suggested by previous studies. The large velocity of PV Cephei had been inferred from the systematic eastward displacement of the bisectors of successive pairs of Herbig Haro knots along its flow. These systematic shifts might instead result from an intrinsic asymmetry in the ejection mechanisms, or in the distribution of the circumstellar material. 2010 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57115522016 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.2 Vol.46 |
| title | A REASSESSMENT OF THE KINEMATICS OF PV CEPHEI BASED ON ACCURATE PROPER MOTION MEASUREMENTS |
| topic | Física, Astronomía y Matemáticas Astrometry stars: pre main sequence ISM: jets and outflows ISM: individual (PV Cep) |
| url | https://www.redalyc.org/articulo.oa?id=57115522016 |