Ýçindekiler
Görüntüler
Resim Yükleyin
DSS Images Other Images
Ýlgili Makaleler
Simultaneous Extreme Ultraviolet and Optical Observations of the Magnetic Cataclysmic Variable PQ Geminorum
We present the results of simultaneous optical polarimetry and EUVspectroscopy and photometry of PQ Gem, a magnetic cataclysmic variablewhich shows observational properties of the strongly magnetic AM Herclass, as well as the weaker field DQ Her stars. The EUV spectrum of PQGem is weak, showing continuum blueward of 80 Angstroms and a fewpossible weak emission lines due to Mg, Si, and Ne. The EUV light curvehas a similar appearance to previous X-ray data obtained for PQ Gem,including a narrow "dip" feature that is modulated with the white dwarfspin period. Observed polarization variations on the spin period,modeled by a slightly modified version of that used in Potter et al.,matched the optical light curve and linear polarization curve reasonablywell, but not the position angle variation. The EUV properties of PQ Gemcan also be understood in the context of this model.
|
Yeni bir Makale Öner
Ýlgili Baðlantýlar
Yeni Bir Baðlantý Öner
sonraki gruplarýn üyesi:
|
Gözlemler ve gökölçümü verileri
| Takýmyýldýz: | Yengec |
| Sað Açýklýk: | 08h01m02.04s |
| Yükselim: | +16°10'38.5" |
| Görünürdeki Parlaklýk: | 8.049 |
| özdevim Sað Açýklýk: | -0.4 |
| özdevim Yükselim: | -9.4 |
| B-T magnitude: | 8.021 |
| V-T magnitude: | 8.047 |
Kataloglar ve belirtme:
|
