Io Input/Output observatory (IoIO) reduction products

Companion dataset to Morgenthaler et al. 2019 ApJL "Large Volcanic<br> Event on Io Inferred from Jovian Sodium Nebula Brightening" Column Meaning <br> FNAME Filename of background-subtracted (``reduced'') image <br> LINE Emission line(s) transmitted through on-band filter (see Table 1 in paper)<br> TMID UT Midpoint of on-band sodium observation <br> EXPTIME Exposure time of on-band image <br> ONBSUB CCD bias and dark value subtracted from on-band image(a) <br> DONBSUB ONBSUB minus median value at edge of on-band Na image<br> OFFBSUB CCD bias and dark value subtracted from off-band image(a) <br> DOFFBSUB OFFBSUB minus median value at edge of off-band Na image<br> OFFSCALE scale factor applied to off-band image before subtracting(b)<br> ADU2R Factor used to convert ADU to rayleighs<br> ANGDIAM Angular diameter of Jupiter at TMID <br> APRj_0 Average of pixels in entire reduced image<br> APJpNNN Average of pixels inside box NNN Rj per side of reduced image(cd)<br> OnRj_0 Average of pixels in entire on-band image<br> OnRJpNNN On-band average inside box NNN Rj per side(cd)<br> OffRj_0 Average of pixels in entire off-band image<br> OffRJpNNN Off-band average inside box NNN Rj per side(cd)<br> RDATE Date reduction code was run <br> RVERSION Reduction version (a) See text of Morgenthaler et al. 2019 ApJL for description of how<br> this was derived from [SII] images<br> (b) Not including factor of 0.8 discussed in text<br> (c) Box centered on Jupiter, aligned with equatorial plane<br> (d) Value = 0 means box extended outside of CCD<br>本数据集为Morgenthaler等人2019年发表于《天体物理学杂志快报》（Astrophysical Journal Letters，ApJL）的论文《从木星钠星云亮度增亮反演木卫一上的大型火山事件》的配套数据集，各列含义如下： FNAME：背景减除（即"归约"）后图像的文件名 LINE：透过通带滤光片的发射谱线（详见论文表1） TMID：钠通带观测的世界时（UT）中点 EXPTIME：通带图像的曝光时长 ONBSUB：从通带图像中减除的电荷耦合器件（CCD）偏置与暗场值(a) DONBSUB：ONBSUB减去通带钠图像边缘的中值 OFFBSUB：从阻带图像中减除的电荷耦合器件（CCD）偏置与暗场值(a) DOFFBSUB：OFFBSUB减去阻带钠图像边缘的中值 OFFSCALE：阻带图像在减除前应用的缩放因子(b) ADU2R：将模数转换单元（ADU）转换为瑞利（Rayleighs）的转换因子 ANGDIAM：TMID时刻木星的角直径 APRj_0：整张归约图像的像素平均值 APJpNNN：归约图像中边长为NNN倍木卫一半径（Rj）的框内像素平均值(cd) OnRj_0：整张通带图像的像素平均值 OnRJpNNN：边长为NNN倍木卫一半径的通带框内平均值(cd) OffRj_0：整张阻带图像的像素平均值 OffRJpNNN：边长为NNN倍木卫一半径的阻带框内平均值(cd) RDATE：归约代码运行的日期 RVERSION：归约版本号 (a) 详见Morgenthaler等人2019年ApJL论文文本，了解其如何从[SII]图像推导而来 (b) 不包括正文中讨论的0.8缩放因子 (c) 该框以木星为中心，与木星赤道平面对齐 (d) 若值为0，则表示该框延伸至CCD成像区域之外