The phrase "afterward published" is correct and usable in written English.
It can be used to indicate that something was published at a later time after a specific event or action.
Example: "The research findings were initially presented at the conference and were afterward published in a reputable journal."
Alternatives: "subsequently published" or "later published".
The same year he delivered the Lowell Lectures in Boston, afterward published as Pragmatism: A New Name for Old Ways of Thinking (1907).
During World War I he advised the United States Army on helmet and body-armor design, and afterward published a book on the subject, "Helmets and Body Armor in Modern Warfare," that is still surprisingly readable.
On the Sina Weibo microblogging site, his post was deleted by censors, and his newspaper soon afterward published an opinion piece defending the barrier and attacking Western media for hating it so much.
The afterward published results of the above investigations had not demonstrated the appreciable difference of the late fates.
After leaving school he travelled in the Near East, afterward publishing A Full Account of the Present State of the Ottoman Empire (1709).
He took the pen name Issa in 1793 and traveled extensively through southwestern Japan, afterward publishing his first collection of verse, Tabishūi (1795; "Travel Gleanings").
She revisited the site twice in the following year to make rubbings of the sculpture and to map the site, soon afterward publishing a report on it (Robertson 1972).
One of the central figures of the Black Arts Movement — the cultural branch of the black power movement that flourished in the 1960s and '70s — Ms. Cortez remained active for decades afterward, publishing a dozen volumes of poetry and releasing almost as many recordings, on which her verse was seamlessly combined with avant-garde music.
Soon afterward, Nicholson published the Latin text with his translation.
Soon afterward, she published a memoir in Japan, strenuously arguing that she had been misunderstood.
It came out in 1969, and, shortly afterward, Life published an article about one of her seminars.
