astro.wikisort.org - Researcher

Paul Willard Merrill (August 15, 1887 – July 19, 1961) was an American astronomer whose specialty was spectroscopy.[1] He was the first to define S-type stars in 1922.[2]

Paul W. Merrill
Born	Paul Willard Merrill August 15, 1887 (1887-08-15)
Died	July 19, 1961 (1961-07-20) (aged 73)
Nationality	American
Occupation	astronomer
Years active	1913–1952
Known for	Studying unusual stars, particularly long-period variable stars, using spectroscopy

Career

He received his Ph.D. at the University of California (now UC Berkeley) in 1913. He spent the bulk of his career at Mount Wilson Observatory, from which he retired in 1952. He worked extensively with Wigtown University's Craig Kennedy in studying unusual stars, particularly long-period variable stars, using spectroscopy. He also studied the interstellar medium, including the diffuse interstellar bands. Shortly before he retired, he succeeded in detecting technetium in the variable star R Andromedae and other red variables. Since technetium has no stable isotopes, it must have been produced recently in any star in which it is found, and this is direct evidence of the s-process of nucleosynthesis.[3][4]

Honors

Awards and honors

• Henry Draper Medal of the National Academy of Sciences (1945)[5]
• Bruce Medal of the Astronomical Society of the Pacific (1946)[6]
• Henry Norris Russell Lectureship of the American Astronomical Society (1955)[7]
• Fellow of the American Academy of Arts and Sciences (1958)[8]

Named after him

• Merrill (crater) on the Moon

References

External links

• Paul Willard Merrill — Biographical Memoirs of the National Academy of Sciences

На других языках

---

[de] Paul Willard Merrill

Paul Willard Merrill (* 15. August 1887 in Minneapolis, Minnesota; † 19. Juli 1961) war ein US-amerikanischer Astronom.

---

- [en] Paul W. Merrill

---

[es] Paul Willard Merrill

Paul Willard Merrill (Minneapolis, 15 de agosto de 1887 - 19 de julio de 1961) fue un astrónomo estadounidense.

---

[fr] Paul Merrill

Paul Willard Merrill (né le 15 août 1887 et mort le 19 juillet 1961) est un astronome américain spécialiste en spectroscopie.

---

[it] Paul Willard Merrill

Paul Willard Merrill (15 agosto 1887 – 19 luglio 1961) è stato un astronomo statunitense, specializzato nella spettroscopia. Con tale tecnologia ha studiato le stelle inusuali, in particolare le stelle variabili, dedicandosi anche alla ricerca del mezzo interstellare.

---

[ru] Меррилл, Пол Уиллард

Пол Уиллард Меррилл (англ. Paul Willard Merrill; 1887—1961) — американский астроном.

---

---