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arXiv 0809.5276astro-ph
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M81星系中49颗经典新星候选者的发现、测光和天体测量

Discovery, photometry, and astrometry of 49 classical nova candidates in M81 galaxy

K. Hornoch, P. Scheirich, P. M. Garnavich, S. Hameed, D. A. Thilker

摘要:

本文报道了一个新的经典新星候选人在M81星系的基础上档案,以及最近,新的图像搜索。我们使用1999-2007年的图像来搜索M81的光学瞬变。确定的经典新星候选者的位置被用来研究它们的空间分布。采用Kolmogorov-Smirnov检验(KS)和自底向上(BTR)比率诊断分析新星候选分布,并区分盘状和隆起群体。总共发现了49颗经典新星候选者。在这项研究中,我们给出了这些天体的精确位置和测光,以及Neill和Shara(2004)发现的另外9颗经典新星候选者的测光。与我们的大样本,我们发现一个不同的空间分布的经典新星候选人相比,早期的研究结果。此外,还发现了一颗非常明亮的新星,并进行了详细的研究。

英文摘要:

This paper reports on a search for new classical nova candidates in the M81 galaxy based on archival, as well as recent, new images. We used images from 1999-2007 to search for optical transients in M81. The positions of the identified classical nova candidates were used to study their spatial distribution. Kolmogorov - Smirnov test (KS) and bottom-to-top (BTR) ratio diagnostic were used to analyze the nova candidate distribution and differentiate between the disk and the bulge populations. In total, 49 classical nova candidates were discovered. In this study, we present the precise positions and photometry of these objects, plus the photometry of an additional 9 classical nova candidates found by Neill and Shara (2004). With our large sample, we find a different spatial distribution of classical nova candidates when compared to the results of earlier studies. Also, an extraordinarily bright nova was found and studied in detail.

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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