This map shows the geographic impact of D. L. Welch's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by D. L. Welch with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites D. L. Welch more than expected).
This network shows the impact of papers produced by D. L. Welch. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by D. L. Welch. The network helps show where D. L. Welch may publish in the future.
Co-authorship network of co-authors of D. L. Welch
This figure shows the co-authorship network connecting the top 25 collaborators of D. L. Welch.
A scholar is included among the top collaborators of D. L. Welch based on the total number of
citations received by their joint publications. Widths of edges
represent the number of papers authors have co-authored together.
Node borders
signify the number of papers an author published with D. L. Welch. D. L. Welch is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Henden, A. A., Matthew R. Templeton, D. Terrell, et al.. (2016). VizieR Online Data Catalog: AAVSO Photometric All Sky Survey (APASS) DR9 (Henden+, 2016).6 indexed citations
4.
Henden, A. A., et al.. (2015). APASS - The Latest Data Release. 225.12 indexed citations
5.
Welch, D. L.. (2012). Type 2 Cepheids in the Milky Way Galaxy and the Magellanic Clouds. 40(1). 492.2 indexed citations
6.
Henden, A. A., S. E. Levine, D. Terrell, Thomas C. Smith, & D. L. Welch. (2011). Data Release 3 of the AAVSO All-Sky Photometric Survey (APASS). 218(1). 430.5 indexed citations
7.
Hesser, J. E., Cheryl M. Bartlett, Marc Jobin, et al.. (2010). An Initial Retrospective on the International Year of Astronomy 2009 in Canada. JRASC. 104(2). 51.1 indexed citations
8.
Henden, A. A., D. L. Welch, D. Terrell, & S. E. Levine. (2009). The AAVSO Photometric All-Sky Survey (APASS). 214.4 indexed citations
Hill, M. E., R. Howe, John F. Kielkopf, et al.. (2005). SGR1806: detection of a sudden ionospheric disturbance.. GRB Coordinates Network. 2932. 1.4 indexed citations
11.
Welch, D. L., et al.. (2003). GRB030329 observed as a sudden ionospheric disturbance (SID).. GRB Coordinates Network. 2176. 1.1 indexed citations
12.
Nikolaev, S., K. H. Cook, C. W. Stubbs, et al.. (2003). Object-Based Photometry Pipeline for SuperMACHO Project. AAS. 203.1 indexed citations
13.
Stubbs, C. W., Kem H. Cook, Suzanne L. Hawley, et al.. (2001). A Next Generation Microlensing Survey of the LMC. 37.1 indexed citations
14.
Welch, D. L.. (1997). Nova in the Small Magellanic Cloud. International Astronomical Union Circular. 6713. 1.1 indexed citations
Webb, Tracy, D. L. Welch, C. D. Wilson, & P. B. Stetson. (1996). A Test for the Metallicity Dependence of the Cepheid Period-Luminosity Relation in the Near Infrared and a New Distance to M31. JRASC. 189. 32.2 indexed citations
17.
Axelrod, T. S., R. A. Allsman, D. P. Bennett, et al.. (1995). Gravitational Microlensing Events in Progress. IAUC. 6169. 2.1 indexed citations
18.
McAlary, C. W., Barry F. Madore, D. L. Welch, & R. McLaren. (1983). The Distance to Nearby Galaxies Based on Near-Infrared Photometry of Cepheids. Bulletin of the American Astronomical Society. 15. 906.1 indexed citations
19.
Percy, John R. & D. L. Welch. (1982). Photometric observations of RS CVn stars.. JRASC. 76. 185–204.3 indexed citations
20.
Welch, D. L., et al.. (1974). The Rotation Period of 18 Melpomene. The Minor planet bulletin. 2. 20–21.2 indexed citations
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive
bibliographic database. While OpenAlex provides broad and valuable coverage of the global
research landscape, it—like all bibliographic datasets—has inherent limitations. These include
incomplete records, variations in author disambiguation, differences in journal indexing, and
delays in data updates. As a result, some metrics and network relationships displayed in
Rankless may not fully capture the entirety of a scholar's output or impact.