• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >OAO/MITSuME photometry of dwarf novae. II. HV Virginis and OT J012059.6+325545
【24h】

OAO/MITSuME photometry of dwarf novae. II. HV Virginis and OT J012059.6+325545

机译：OAO / MISSUME Novae的测光测验。 II。 HV Virginis和OT J012059.6 + 325545

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We report on multicolor photometry of WZ Sge-type dwarf novae HVVir and OT J012059.6+325545 during superoutbursts. These systems show early superhumps with mean periods of 0.057093(45) d for HVVir and 0.057147(15) d for OT J012059.6+325545. The observed early superhumps showed a common feature that the brightness minima corresponded to the bluest peaks in color variations, which may be a ubiquitous phenomenon among early superhumps of WZ Sge-type dwarf novae. We confirmed that the amplitudes of early superhumps depend on wavelength: amplitudes with longer bandpass filters show larger values. This indicates that the light source of early superhumps is generated at the outer region of the vertically extended accretion disk. On the other hand, amplitudes of ordinary superhumps are likely to be independent of wavelength. This implies that the superhump light source is geometrically thin. We also examined color variations of ordinary superhumps and found that the bluest peaks in g' - I-c tend to coincide with the brightness minima, particularily in stage B superhumps. This may reflect that the pressure effect plays a dominant role during stage B superhumps.
机译：我们报道了WZ Sge型矮新星HVVir和OT J012059的多色光度测定。6+325545在超输出脉冲期间。这些系统显示出早期超泵，HVVir的平均周期为0.057093（45）d，OT J012059的平均周期为0.057147（15）d。6+325545. 观测到的早期超峰显示了一个共同特征，即亮度极小值对应于颜色变化中的最蓝峰值，这可能是WZ-Sge型矮新星早期超峰中普遍存在的现象。我们证实，早期超脉冲的振幅取决于波长：带通滤波器越长，振幅值越大。这表明早期超隆起的光源产生于垂直扩展吸积盘的外部区域。另一方面，普通超脉冲的振幅可能与波长无关。这意味着超泵光源在几何上很薄。我们还研究了普通超脉冲的颜色变化，发现g'-I-c中最蓝的峰值往往与亮度最小值一致，特别是在B级超脉冲中。这可能反映出压力效应在B级超泵中起主导作用。

著录项

相似文献

  • 外文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号