The Subarcsecond Binary T Tauri Star Sample

The Taurus dark cloud is located at about 140 pc from the Sun, so a typical angular size of a circumstellar disk around these stars is about 1 arcsecond. Most T Tauri stars are binaries. This paper studies how the accretion disks around the primary and secondary behave when the separation between the stars is comparable to or smaller than the typical size of a disk. This combination of HST acquisition images shows the sample. The primary and secondary of each pair was observed spectroscopically with STIS on HST.