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Dive into the research topics where Mark Hammergren is active.

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Featured researches published by Mark Hammergren.


The Astronomical Journal | 2001

Solar System Objects Observed in the Sloan Digital Sky Survey Commissioning Data

Željko Ivezić; Serge Tabachnik; Roman R. Rafikov; Robert H. Lupton; Thomas P. Quinn; Mark Hammergren; Laurent Eyer; Jennifer Chu; John C. Armstrong; Xiaohui Fan; Kristian Finlator; T. R. Geballe; James E. Gunn; Gregory S. Hennessy; Gillian R. Knapp; S. K. Leggett; Jeffrey A. Munn; Jeffrey R. Pier; Constance M. Rockosi; Donald P. Schneider; Michael A. Strauss; Brian Yanny; Jonathan Brinkmann; István Csabai; Robert B. Hindsley; Stephen M. Kent; D. Q. Lamb; Bruce Margon; Timothy A. McKay; Patrick Waddel

We discuss measurements of the properties of D13,000 asteroids detected in 500 deg2 of sky in the Sloan Digital Sky Survey (SDSS) commissioning data. The moving objects are detected in the magnitude range 14 \ r* \ 21.5, with a baseline of D5 minutes, resulting in typical velocity errors of D3%. Extensive tests show that the sample is at least 98% complete, with a contamination rate of less than 3%. We —nd that the size distribution of asteroids resembles a broken power law, independent of the heliocentric distance: D~2.3 for 0.4 km, and D~4 for 5


The Astronomical Journal | 1995

Globular Clusters in Coma Galaxy NGC 4881

William A. Baum; Mark Hammergren; Edward J. Groth; Edward A. Ajhar; Tod R. Lauer; Jr. O'Neil Earl J.; C. R. Lynds; S. M. Faber; Carl J. Grillmair; Jon A. Holtzman; Robert M. Light


The Astronomical Journal | 1997

Distance to the Coma Cluster and a Value for HO Inferred from Globular Clusters in IC 4051

William A. Baum; Mark Hammergren; Bjarne Thomsen; Edward J. Groth; Sandra M. Faber; Carl J. Grillmair; Edward A. Ajhar


Archive | 2009

Time Domain Research in Astronomy

Lifan Wang; Xiangqun Cui; Donald Q. Lamb; Khokhlov; Michael C. B. Ashley; Stephan Basa; Morley M. Blouke; Wei Wei Cui; G. Gyuk; Daniel E. Holz; Mark Hammergren; Jonathan Lawrence; Roger F. Malina; Anna M. Moore; Reed Riddle; John W. V. Storey; Tony Travouillon; Brian C. Wilhite


Archive | 2011

Basaltic Asteroids in the Middle and Outer Main Belt Observed by the AVAST Survey

Mark Hammergren; G. Gyuk; Michael Solontoi; Andrew W. Puckett


Archive | 2007

The Adler V-type Asteroid (AVAST) Survey - Mid-survey Status Report

Mark Hammergren; G. Gyuk; Andrew W. Puckett


Archive | 2006

GRB 060121: probable detection of NIR afterglow.

Frederick R. Hearty; Matthew B. Bayliss; Donald Q. Lamb; G. Gyuk; Mark Hammergren; Andrew W. Puckett; B. Ketzeback; John C. Barentine; Jack Dembicky; Russet Jennifer McMillan; Donald G. York


Archive | 2010

Hands-on Space Exploration through High Altitude Ballooning

Mark Hammergren; G. Gyuk


Archive | 2007

The 41st & 42nd Annual Astro-Science Workshops: Searching for Asteroids in the Digital Age

Andrew W. Puckett; Mark Hammergren; G. Gyuk; Vivian L. Hoette


Archive | 2006

Astro-Science Workshop: Education and Public Outreach at the Adler Planetarium

Lauren R. Grodnicki; Mark Hammergren; Andrew W. Puckett

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Andrew W. Puckett

University of Alaska Anchorage

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Carl J. Grillmair

California Institute of Technology

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Edward A. Ajhar

Kitt Peak National Observatory

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C. R. Lynds

Kitt Peak National Observatory

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Jon A. Holtzman

New Mexico State University

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