Eight PopII Cepheids Recently Identified in Globular Clusters

The University of Toronto 24-inch telescope at the Las Campanas Observatory of the Carnegie Institution of Washington has beerused for the study of variables in four southern globular clusters: NGC 6273=1119, NGC 6284, NGC 6293 and NGC 6333-M9.The first three of these clusters lie about 2° from one another in the sky at southern declinations ranging from about 24.5° to 26.5°. They were investigated by one of us (Sawyer 1943) using photographs obtained at the Steward Observatory in Arizona in 1939. A number of variables were discovered, but even with additional David Dunlap plates, it was not possible to determine any periods because of the large southern declinations. At Las Campanas (latitude 29°S), they pass close to the zenith and therefore the periods are more readily determined. From our Las Campanas data, we have found that there are four Cepheids in NGC 6273, two in NGC 6284 and one in NGC 6293.

Two PopII Cepheids in the Globular Cluster M10

International Astronomical Union Colloquium ◽

10.1017/s0252921100109467 ◽

1985 ◽

Vol 82 ◽

pp. 260-261 ◽

Cited By ~ 1

Author(s):

C. Clement ◽

H. Sawyer Hogg ◽

K. Lake

Keyword(s):

Globular Cluster ◽

Horizontal Branch ◽

Carnegie Institution ◽

University Of Toronto ◽

The Third ◽

Irregular Variable ◽

The globular cluster Messier 10 has three known variables. The first two of these were discovered by one of us (Sawyer 1933) and the third by Arp (1955). Two of the variables, V2 (P=18.7226) and V3 (P=7.831), are population II cepheids while V1 appears to be an irregular variable. Another star which lies in the Schwarzschild gap on the horizontal branch is a suspected variable (Voroshilov 1971).In this investigation, we examine the variations in the periods of the two cepheids over the interval 1912 to 1983 (for V2) and 1931 to 1983 (for V3). The study is based on photographs obtained with seven different telescopes - the Mt.Wilson 100-inch and 60-inch (1912 to 1919), the Dominion Astrophysical Observatory 72-inch, the David Dunlap 74-inch and 19-inch, the 16-inch at the University of Toronto downtown campus and the University of Toronto 24-inch at the Las Campanas Observatory of the Carnegie Institution of Washington. Some of our magnitudes have already been published (Sawyer 1938) and the remaining ones will be submitted to the Astronomical Journal for publication. We have also included material published by Arp (1955, 1957) in our study.

The Roman Propaganda Fide Archives: An Overflow and Assessment

Church History ◽

10.2307/3163262 ◽

1964 ◽

Vol 33 (1) ◽

pp. 84-91

Author(s):

John B. Mcgloin

Keyword(s):

Catholic Church ◽

American History ◽

Carnegie Institution ◽

Historical Account ◽

University Of Wisconsin ◽

Research Associate ◽

Standard Tool ◽

The University ◽

The Catholic Church

In 1908–09 Professor Carl Russell Fish of the University of Wisconsin was commisioned as a Research Associate by the Carnegie Institution of Washington, D.C., and sent abroad to visit and assess the materials for American history to be found in the various archives of Italy. Out of his labors, done with the precision of a trained historian, came a volume which has long been a standard tool for students and researchers in this field: Fish's Guide to the Materials for American History in Roman and Other Italian Archives, published in 1911 by the Carnegie Institution. Pages 119–95 are devoted to an analysis of those archives of the Catholic Church which are commonly called the Archives of the Sacred Congregation de Propaganda Fide in Rome. Fish's analysis is preceded by a brief historical account of this important arm in the ordinary government of the Catholic Church from 1622 (the date of its establishment) until 1911.

Jochelson, Waldemar, 2002 Archaeological Investigations in the Aleutian Islands, Salt Lake City, The University of Utah Press, Anthropology of Pacific North America Series, originally published by the Carnegie Institution of Washington, 1925, 192 p. Jochelson, Waldemar, 2002 History, Ethnology and Anthropology of the Aleut, Salt Lake City, The University of Utah Press, Anthropology of Pacific North America Series, originally published by the Carnegie Institution of Washington, 1933, 104 p.

Études/Inuit/Studies ◽

10.7202/013209ar ◽

2004 ◽

Vol 28 (2) ◽

pp. 226

Author(s):

Christine Lefèvre

Keyword(s):

North America ◽

Salt Lake ◽

Salt Lake City ◽

Aleutian Islands ◽

Carnegie Institution ◽

University Of Utah ◽

Lake City ◽

A tribute to the life and work of George W. Wetherill: Some reflections of his career at DTM

Proceedings of the International Astronomical Union ◽

10.1017/s1743921307002992 ◽

2006 ◽

Vol 2 (S236) ◽

pp. xxi-xxiv

Author(s):

Douglas O. ReVelle

Keyword(s):

University Of California ◽

Postdoctoral Fellow ◽

Carnegie Institution ◽

Harvard College ◽

Terrestrial Magnetism ◽

Earth’S Atmosphere ◽

Earth's Atmosphere ◽

Harvard College Observatory ◽

George Wetherill and I worked together as scientific collaborators when I was a postdoctoral fellow in 1977-1978 at the Department of Terrestrial Magnetism (DTM) of the Carnegie Institution of Washington (CIW) in Washington, D.C. We worked on problems of meteoroids interacting in Earth's atmosphere along with Richard McCrosky at Harvard College Observatory and Zdeněk Ceplecha at the Ondřejov Observatory in Czechoslovakia and also with Sundar Rajan who had already arrived at DTM from the University of California at Berkeley before me.

Norman Levi Bowen, 1887-1956

Biographical Memoirs of Fellows of the Royal Society ◽

10.1098/rsbm.1957.0002 ◽

1957 ◽

Vol 3 ◽

pp. 6-22 ◽

Cited By ~ 1

Keyword(s):

Experimental Petrology ◽

Field Work ◽

Gold Medal ◽

Geological Survey ◽

Mining Institute ◽

Lake Area ◽

Carnegie Institution ◽

Research Associate ◽

Norman Levi Bowen, Research Associate of the Geophysical Laboratory of the Carnegie Institution of Washington, and one of the great pioneers in experimental petrology, died in Washington D.C. on 11 September 1956 in his seventieth year. He was born at Kingston, Ontario, on 21 June 1887, the younger son of William Alfred Bowen, a Londoner by birth, who had come to settle in Canada. Bowen attended school in Kingston and in the autumn of 1903 entered Queen’s University, registering in the Faculty of Arts. There he took an honours course in chemistry and mineralogy, graduating with the degree of M.A. in 1907 with the University medals in both subjects. In the same year he entered the School of Mining completing the B.Sc. degree course in 1909 in mineralogy and geology. Among his professors at Queen’s were R. W. Brock, subsequently Director of the Geological Survey of Canada, M. B. Baker and W. Nicol. E. L. Bruce and W. L. Uglow who later achieved distinction in geology were among his contemporaries. During his University career at Kingston he became engaged in field work for the Ontario Bureau of Mines, first in the summer of 1907 with Brock on a geological survey at Larder Lake, and in succeeding field seasons with M. B. Baker at Lake Abitibi (1908) and in the Gowganda Lake area in 1909, working there under the general supervision of A. G. Burrows. The results of his studies in these years appeared in two contributions, the first as a student’s paper in 1909 on diabase and aplite of the cobalt-silver area — which was awarded first prize by the Canadian Mining Institute and the President’s gold medal; the second appeared in 1910 in the Journal of Geology .