IGAP：合并的IPHAS和UVEX光学调查

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IGAP：合并的IPHAS和UVEX光学调查

IGAPS: the merged IPHAS and UVEX optical surveys of theNorthern Galactic Plane

论文作者

Monguió, M., Greimel, R., Drew, J. E., Barentsen, G., Groot, P. J., Irwin, M. J., Casares, J., Gänsicke, B. T., Carter, P. J., Corral-Santana, J. M., Gentile-Fusillo, N. P., Greiss, S., van Haaften, L. M., Hollands, M., Jones, D., Kupfer, T., Manser, C. J., Murphy, D. N. A., McLeod, A. F., Oosting, T., Parker, Q. A., Pyrzas, S., Rodríguez-Gil, P., van Roestel, J., Scaringi, S., Schellart, P., Toloza, O., Vaduvescu, O., van Spaandonk, L., Verbeek, K., Wright, N. J., Eislöffel, J., Fabregat, J., Harris, A., Morris, R. A. H., Phillipps, S., Raddi, R., Sabin, L., Unruh, Y., Vink, J. S, Wesson, R., Cardwell, A., Cochrane, R. K., Doostmohammadi, S., Mocnik, T., Stoev, H., Suárez-Andrés, L., Tudor, V., Wilson, T. G., Zegmott, T. J.

论文摘要

基于从2003年至2018年之间获得的ISAAC Newton望远镜（INT）的数据，INT银河平面调查（IGAP）是光度测量，IPHAS和UVEX的合并。在这里，我们介绍了Igaps Point Source目录。它包含2.954亿行，可在过滤器，i，r，窄带halpha，g和u_rgo中提供光度法。 Igaps足迹填充了银河坐标范围，| b | <5deg和30deg <l <l <215deg。均匀的校准（称为Pan-Starrs系统）应用于G，R和I，而HALPHA校准链接到R与R相关，然后通过字段重叠来对待。所有5个频段中的天体都已在Gaia DR2框架上重新计算。降至I〜20 mag（Vega系统），大多数恒星也在G，R和Halpha中检测到。由于在IPHASE中获得了R频段的曝光，并且相距几年，因此，目录包括两个不同的R措施，R_I和R_U。 R 10sigma限制幅度为〜21，中位数为1.1 ARCSEC。在所有频段中，在〜13和〜19次尺寸之间，光度法在0.02幅度内都可以内部重现。恒星比r = 19.5的恒星对窄带HALPHA过量信号线排放进行了测试，并且超过| R_I-R_U的变化| = 0.2 mag。我们发现并标记了8292个候选发射线星和超过53000个变量（均为5sigma置信度）。 174列目录将通过CDS Strasbourg提供。

The INT Galactic Plane Survey (IGAPS) is the merger of the optical photometric surveys, IPHAS and UVEX, based on data from the Isaac Newton Telescope (INT) obtained between 2003 and 2018. Here, we present the IGAPS point source catalogue. It contains 295.4 million rows providing photometry in the filters, i, r, narrow-band Halpha, g and U_RGO. The IGAPS footprint fills the Galactic coordinate range, |b| < 5deg and 30deg < l < 215deg. A uniform calibration, referred to the Pan-STARRS system, is applied to g, r and i, while the Halpha calibration is linked to r and then is reconciled via field overlaps. The astrometry in all 5 bands has been recalculated on the Gaia DR2 frame. Down to i ~ 20 mag (Vega system), most stars are also detected in g, r and Halpha. As exposures in the r band were obtained within the IPHAS and UVEX surveys a few years apart, typically, the catalogue includes two distinct r measures, r_I and r_U. The r 10sigma limiting magnitude is ~21, with median seeing 1.1 arcsec. Between ~13th and ~19th magnitudes in all bands, the photometry is internally reproducible to within 0.02 magnitudes. Stars brighter than r=19.5 have been tested for narrow-band Halpha excess signalling line emission, and for variation exceeding |r_I-r_U| = 0.2 mag. We find and flag 8292 candidate emission line stars and over 53000 variables (both at >5sigma confidence). The 174-column catalogue will be available via CDS Strasbourg.

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