HII region

• PHANGS-MUSE survey
• PHANGS-JWST

4个星系：Two galaxies (NGC 1365 and NGC 7496) host active galactic nuclei (AGNs) and strong bars. NGC 628 is a prototypical grand-design spiral, while IC 5332 shows a flocculent spiral morphology. Based on MUSE Hα emission line maps, a catalog of ∼ 30, 000 nebulae has been constructed. The nebulae were selected using HIIphot.

• 采用 galaxy mixture density network (GMDN，一种高斯混合模型）的方法来推断星系中不可分辨HII区的发射线 [1] [2]

arXiv:2212.09159: 利用JWST/MIRI images in the F770W, F1000W and F1130W来计算q(PAH)=(F770+F1130)/F2100来计算PAH在尘埃中的比例，F2100是用来表示非常小的尘埃颗粒的发射，从而代表总尘埃。SIII/SII表征电离参数，发现q(PAH)最主要和电离参数相关，而和金属丰度关系不大

• HII区和分子云区域的转换非常的sharp [3]

• 利用IFS数据来搜寻HII区的软件 pyHIIexplorer [4] arXiv:2204.04252
• 利用发射线来算金属丰度

• HII-CHI-MISTRY
• GAME （机器学习的方法）https://arxiv.org/abs/1803.10236
• nebulabayes: [5]
• HIIlines [6]