D
Douglas Morgan
Researcher at Smithsonian Institution
Publications - 12
Citations - 634
Douglas Morgan is an academic researcher from Smithsonian Institution. The author has contributed to research in topics: Cepheid variable & Amplitude. The author has an hindex of 4, co-authored 12 publications receiving 548 citations. Previous affiliations of Douglas Morgan include Smithsonian Astrophysical Observatory.
Papers
More filters
Journal ArticleDOI
The chandra source catalog
Ian N. Evans,Francis A. Primini,Kenny J. Glotfelty,C. S. Anderson,Nina R. Bonaventura,Judy C. Chen,John E. Davis,Stephen M. Doe,Janet D. Evans,Giuseppina Fabbiano,Elizabeth C. Galle,Danny G. Gibbs,John D. Grier,Roger Hain,Diane M. Hall,Peter N. Harbo,Xiangqun Helen He,John C. Houck,Margarita Karovska,Vinay Kashyap,Jennifer Lauer,Michael L. McCollough,Jonathan C. McDowell,Joseph B. Miller,Arik W. Mitschang,Douglas Morgan,Amy E. Mossman,Joy S. Nichols,Michael A. Nowak,David A. Plummer,Brian L. Refsdal,Arnold H. Rots,Aneta Siemiginowska,Beth A. Sundheim,Michael S. Tibbetts,David W. Van Stone,Sherry L. Winkelman,Panagoula Zografou +37 more
TL;DR: The Chandra Source Catalog (CSC) as mentioned in this paper is a general purpose virtual X-ray astrophysics facility that provides access to a carefully selected set of generally useful quantities for individual Xray sources, and is designed to satisfy the needs of a broad-based group of scientists.
Journal ArticleDOI
Binary Properties from Cepheid Radial Velocities (CRaV)
Nancy Remage Evans,L. N. Berdnikov,Jennifer Lauer,Douglas Morgan,Joy S. Nichols,H. Moritz Günther,H. Moritz Günther,Natalya Gorynya,Natalya Gorynya,Alexey S. Rastorguev,Pawel Moskalik +10 more
TL;DR: In this paper, the authors examined high accuracy radial velocities of Cepheids to determine the binary frequency and derived the preferred binary fraction of 29% ± 8% (20%± 6% per decade of orbital period) from the brightest 40 stars.
Journal ArticleDOI
Chandra Early-type Galaxy Atlas
Dong-Woo Kim,Craig Anderson,Douglas Burke,Raffaele D'Abrusco,Giuseppina Fabbiano,Antonella Fruscione,Jennifer Lauer,Michael L. McCollough,Douglas Morgan,Amy E. Mossman,Ewan O'Sullivan,Alessandro Paggi,Saeqa Dil Vrtilek,Ginevra Trinchieri +13 more
TL;DR: In this paper, the authors systematically analyzed the archival Chandra data of 70 early type galaxies (ETGs) and produced uniform data products for the hot gas properties, which are spatially resolved 2D spectral maps of hot gas from individual galaxies.
Journal ArticleDOI
Statistical characterization of the chandra source catalog
Francis A. Primini,John C. Houck,John E. Davis,Michael A. Nowak,Ian N. Evans,Kenny J. Glotfelty,C. S. Anderson,Nina R. Bonaventura,Judy C. Chen,Stephen M. Doe,Janet D. Evans,Giuseppina Fabbiano,Elizabeth C. Galle,Danny G. Gibbs,John D. Grier,Roger Hain,Diane M. Hall,Peter N. Harbo,Xiangqun Helen He,Margarita Karovska,Vinay Kashyap,Jennifer Lauer,Michael L. McCollough,Jonathan C. McDowell,Joseph B. Miller,Arik W. Mitschang,Douglas Morgan,Amy E. Mossman,Joy S. Nichols,David A. Plummer,Brian L. Refsdal,Arnold H. Rots,Aneta Siemiginowska,Beth A. Sundheim,Michael S. Tibbetts,David W. Van Stone,Sherry L. Winkelman,Panagoula Zografou +37 more
TL;DR: The first release of the Chandra Source Catalog (CSC) contains ~95,000 X-ray sources in a total area of 0.75% of the entire sky, using data from ~3900 separate ACIS observations of a multitude of different types of different sources as discussed by the authors.
Journal ArticleDOI
Binary Properties from Cepheid Radial Velocities (CRaV)
Nancy Remage Evans,L. N. Berdnikov,Jennifer Lauer,Douglas Morgan,Joy S. Nichols,H. Moritz Günther,H. Moritz Günther,Natalya Gorynya,Natalya Gorynya,Alexey S. Rastorguev,Pawel Moskalik +10 more
TL;DR: In this article, the authors examined high accuracy radial velocities of Cepheids to determine the binary frequency and derived the preferred binary fraction of $29\pm8$\% ( $20\pm6$ \% per decade of orbital period) from the brightest 40 stars.