Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies
if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the
same subfield and year (this is the minimum needed to enter the top 1%, not the average
within it), or reaches the top citation threshold in at least one of its specific research
topics.
A low mass for Mars from Jupiter’s early gas-driven migration
2011729 citationsAlessandro Morbidelli, D. P. O’Brien et al.profile →
Accretion and differentiation of the terrestrial planets with implications for the compositions of early-formed Solar System bodies and accretion of water
2014300 citationsAlessandro Morbidelli, D. P. O’Brien et al.profile →
Building Terrestrial Planets
2012296 citationsAlessandro Morbidelli, J. I. Lunine et al.profile →
Peers — A (Enhanced Table)
Peers by citation overlap · career bar shows stage (early→late)
cites ·
hero ref
This map shows the geographic impact of D. P. O’Brien'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. P. O’Brien with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites D. P. O’Brien more than expected).
This network shows the impact of papers produced by D. P. O’Brien. 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. P. O’Brien. The network helps show where D. P. O’Brien may publish in the future.
Co-authorship network of co-authors of D. P. O’Brien
This figure shows the co-authorship network connecting the top 25 collaborators of D. P. O’Brien.
A scholar is included among the top collaborators of D. P. O’Brien 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. P. O’Brien. D. P. O’Brien is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Davison, T. M., et al.. (2017). Collisional Histories of Small Planetesimals. Lunar and Planetary Science Conference. 2296.1 indexed citations
4.
Marchi, S., D. P. O’Brien, P. Schenk, et al.. (2016). Cratering on Ceres: The Puzzle of the Missing Large Craters. Lunar and Planetary Science Conference. 1281.3 indexed citations
5.
Richardson, J. E. & D. P. O’Brien. (2016). The disposition of impact ejecta resulting from the AIDA-DART mission to binary asteroid 65803 Didymos: an independent investigation.1 indexed citations
6.
Scully, J. E. C., D. L. Buczkowski, J. C. Castillo, et al.. (2016). The Surface and Interior Evolution of Ceres Revealed by Analysis of Fractures and Secondary Crater Chains Using Dawn Data. AGU Fall Meeting Abstracts.1 indexed citations
7.
Schmidt, B. E., H. Chilton, K. Hughson, et al.. (2016). Icing in the Cake: Evidence for Ground Ice in Ceres. elib (German Aerospace Center). 48.1 indexed citations
8.
Schenk, P., et al.. (2015). Morphology and Age of Rheasilvia (Vesta), and Expectations for Large Impact Basins on Ceres. LPI. 2309.
9.
Sizemore, H. G., D. A. Williams, T. Platz, et al.. (2015). Preliminary Geological Map of the Ac-H-13 Urvara Quadrangle of Ceres: An Integrated Mapping Study Using Dawn Spacecraft Data. elib (German Aerospace Center). 2015.1 indexed citations
10.
O’Brien, D. P., S. Marchi, Alessandro Morbidelli, et al.. (2014). The Impact History of Vesta. LPICo. 1773. 2049.2 indexed citations
11.
Marchi, S., H. Y. McSween, D. P. O’Brien, et al.. (2012). Vesta Collisional History Revealed by Dawn: Building a Vesta Global Crater Catalog. elib (German Aerospace Center). 1617.1 indexed citations
12.
Neukum, G., P. Schenk, N. Schmedemann, et al.. (2011). Chronology and Cratering at Vesta: First Results from Dawn's Survey Orbit. elib (German Aerospace Center). 2011. 501.1 indexed citations
13.
O’Brien, D. P.. (2010). Collision Velocities in the Asteroid Belt: Implications for Melt Production on Meteorite Parent Bodies. M&PSA. 73. 5063.1 indexed citations
14.
Lunine, J. I., A. L. Graps, D. P. O’Brien, et al.. (2007). Asteroidal Sources of Earth's Water Based on Dynamical Simulations. LPI. 1616.3 indexed citations
15.
O’Brien, D. P. & R. Greenberg. (2007). The Lack of Small Craters on Eros is not due to the Yarkovsky Effect. DPS.1 indexed citations
16.
O’Brien, D. P., Alessandro Morbidelli, & W. F. Bottke. (2005). Collisional Evolution of the Primordial Trans-Neptunian Disk: Implications for Planetary Migration and the Current Size Distribution of TNOs. 37.3 indexed citations
17.
Greenberg, R. & D. P. O’Brien. (2003). Boulders and craters on Eros: Mutually consistent size distributions. DPS.2 indexed citations
18.
Greenberg, R., P. E. Geissler, D. P. O’Brien, G. V. Hoppa, & B. R. Tufts. (2001). Ocean-to-Surface Linkages Resurface Europa: An Invited Review. LPI. 1428.4 indexed citations
19.
Geissler, P. E., D. P. O’Brien, & Raphael Greenberg. (2001). Silicate Volcanism on Europa. Lunar and Planetary Science Conference. 2068.5 indexed citations
20.
O’Brien, D. P., P. E. Geissler, & R. Greenberg. (2000). Tidal Heat in Europa: Ice Thickness and the Plausibility of Melt-Through. DPS. 32.3 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.