arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1304.2673astro-ph.GAastro-ph.SR
收藏

在VVV测量区的银河新星的近红外目录

A near-infrared catalogue of the Galactic novae in the VVV survey area

R. K. Saito, D. Minniti, R. Angeloni, M. Catelan, J. C. Beamin, J. Borissova, I. Dekany, E. Kerins, R. Kurtev, R. E. Mennickent

摘要:

经典新星的近红外数据包含了关于喷出的气体质量和喷发期间形成的尘埃的热辐射的有用信息,并提供了根据其祖先的颜色以及喷发后看到的褪色速度和特征对物体进行分类的独立方法。Via Lactea调查(VVV)中的VISTA变量是近红外ESO公共调查,绘制了MW凸起和南部平面。2010-2011年期间采集的数据涵盖了JHK波段的整个区域以及正在进行的VVV变异性活动的KS波段的一些时期。我们使用VSX/AAVSO星表提供的新星列表来搜索VVV区域内的所有天体。我们使用的VVV数据创建一个近红外目录的已知的银河系新星在562平方度。VVV覆盖的区域。VVV近红外新星目录包含JHK截至2012年12月完成的93个天体的测光。我们还检查了正在进行的VVV变化运动,以获得过去几年爆发的新星的光变曲线。VVV图像也可以用来发现和研究新星通过寻找扩大壳。由于天体是在不同的距离和变红程度上被观测到的,所以颜色-星等图和颜色-颜色图显示了新星在星等和颜色上的分布。去红颜色和无红指数的使用是谨慎的,不可能在所有情况下都是一个好办法,因为距离和光谱特征妨碍了对一些极端天体得出更确定的结果。给出了一些最近新星的光变曲线。由于其在近红外的高空间分辨率和大的KS范围,VVV调查可以成为银河系最拥挤和高消光区域新星搜索和研究的主要贡献者。VVV调查区包含银河系中所有已知新星中的约35颗。

英文摘要:

Near-IR data of Classical Novae contain useful information about the ejected gas mass and the thermal emission by dust formed during eruption, and provide independent methods to classify the objects according to the colour of their progenitors, and the fading rate and features seen after eruption. The VISTA Variables in the Via Lactea survey (VVV) is a near-IR ESO Public Survey mapping the MW bulge and southern plane. Data taken during 2010-2011 covered the entire area in the JHKs bands plus some epochs in Ks-band of the ongoing VVV variability campaign. We used the novae list provided by VSX/AAVSO catalogue to search for all objects within the VVV area. We used the VVV data to create a near-IR catalogue of the known Galactic novae in the 562 sq.deg. area covered by VVV. The VVV near-IR catalogue of novae contains JHKs photometry of 93 objects completed as of December 2012. We also checked in the ongoing VVV variability campaign for the light-curves of novae that erupted in the last years. VVV images can also be used to discover and study novae by searching for the expanding shell. Since objects are seen at different distances and reddening levels, the colour-magnitude and colour-colour diagrams show the novae spread in magnitude as well as in colour. Dereddened colours and reddening-free indices were used with caution and cannot be a good approach in all cases since the distance and spectral features prevent more conclusive results for some extreme objects. Light-curves for some recent novae are presented. Thanks to its high spatial resolution in the near-IR, and large Ks-range, the VVV survey can be a major contributor for the search and study of novae in the most crowded and high-extinction regions of the Milky Way. The VVV survey area contains ~35 of all known novae in the Galaxy.

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。

↑