Emma Vyssotsky

Emma T. R. Williams Vyssotsky (born Emma T. R. Williams; October 23, 1894 – May 12, 1975) was an American astronomer who received the Annie J. Cannon Award in Astronomy in 1946. She worked at Smith College as an astronomy There, she worked with Cecilia Payne on the "spectral line contours of hydrogen and ionized calcium throughout the spectral sequence."

Select publications Emma published much of her research under the name E. T. Williams. She and her husband, Alexander, would alternate the lead author role on their joint papers, with her name appearing first sometimes, and his name appearing first at other times.

Vyssotsky, E. T. W. (1929). A Spectrophotometric Study of A Stars (Doctoral dissertation, Radcliffe College).