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arXiv 0907.3957astro-ph.GAastro-ph.SR
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Herbig Ae/Be候选星的近红外测光巡天

Near-Infrared Photometric Survey of Herbig Ae/Be Candidate Stars

Ryan L. Doering, Margaret Meixner

摘要:

我们报告的近红外测光测量35赫比格Ae/Be候选星获得直接成像和光圈测光。通过宽带J,H和K'滤波器进行观察,每个源至少在一个波段成像。我们实现了所有观测的亚角秒角分辨率,为我们提供了寻找接近的二元候选者和扩展结构的机会。成像显示了五个新发现的候选双星和一个先前分辨的目标源中的金牛座T双星,分离<~2.5”。每个候选双星都有单独的测光表。我们探测到一个扩展源,已被确定为原行星状星云。将我们的星等与过去的测量结果进行比较,对某些来源产生了显着的差异,可能表明光度变化。我们提供了所有源的H波段发现图表,以帮助后续的高分辨率成像。

英文摘要:

We report near-infrared photometric measurements of 35 Herbig Ae/Be candidate stars obtained with direct imaging and aperture photometry. Observations were made through the broadband J, H, and K' filters, with each source imaged in at least one of the wavebands. We achieved subarcsecond angular resolution for all observations, providing us with the opportunity to search for close binary candidates and extended structure. The imaging revealed five newly identified binary candidates and one previously resolved T Tauri binary among the target sources with separations of <~2.5". Separate photometry is provided for each of the binary candidate stars. We detect one extended source that has been identified as a protoplanetary nebula. Comparing our magnitudes to past measurements yields significant differences for some sources, possibly indicating photometric variability. H-band finding charts for all of our sources are provided to aid follow-up high-resolution imaging.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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