Halpha3. Catalog and SFR in Virgo cluster

We present H{alpha}3 (acronym for H{alpha}-{alpha}{alpha}), an H{alpha} narrow-band imaging survey of ~400 galaxies selected from the HI Arecibo Legacy Fast ALFA Survey...本文介绍了Hα3（为Hα-αα的首字母缩略词），这是一项针对从HI阿雷西博遗产快速ALFA巡天（HI Arecibo Legacy Fast ALFA Survey）中选取的约400个星系开展的Hα窄带成像巡天项目……