Publications 2002

• 
  Nelson, A.E., Gonzalez, A.H., Zaritsky, D., & Dalcanton, J.J., 2002
  Revisiting Brightest Cluster Galaxy Evolution with the Las Campanas Distant Cluster Survey,
  ApJ, 566, 103
  (extragalactic, observational)
  
  Nelson, A.E., Simard, L.,Zaritsky, D., Dalcanton, J.J., & Gonzalez, A.H., 2002 
  Constraints on the Size Evolution of Brightest Cluster Galaxies
   ApJ, 567, 144 (extragalactic, observational)
  
  Gonzalez, A.H., Zaritsky, D., & Wechsler, R.H., 2002
  The Las Campanas Distant Cluster Survey Correlation Function,
  ApJ, 571, 129 (extragalactic, observational)
  
  Gonzalez, A.H., Zaritsky, D., Simard, L.,Clowe, D., & White, S.D.M., 2002
  Tests of the Las Campanas Distant Cluster Survey from Confirmation Observations 
  for the ESO Distant Cluster Survey
  ApJ, 579, 577 (extragalactic, observational)
  
  Bell, E.F., Gordon, K.D., Kennicutt, R.C., & Zaritsky, D., 2002,
  The Effects of Dust in Simple Environments: Large Magellanic Cloud H II Regions.
  Apj, 565, 994 (galactic, observational)
  
  Zaritsky, D., Harris, J., Thompson, I.B., Grebel, E.K., and Massey, P. 2002
  The Magellanic Clouds Photomtric Survey: The Small Magellanic Cloud Stellar Catalog 
  AJ, 123, 855 (galactic, observational)
  

Ongoing Research

    D. Zaritsky is involved in a large collaborative project led
    by S.D.M. White (MPA) to use the VLT and NTT telescopes to study
    subsamples of 10 clusters at a redshift of 0.5 and 10 clusters at a
    redshift of 0.8 drawn from the Las Campanas Distant Cluster Survey. We
    have obtained all of the initially planned optical and IR data.
    (extragalactic, observational)

    D. Zaritsky, in collaboration with A. Gonzalez (U.Florida),
    A. Zabludoff (Steward), and J. Dalcanton (UW), is measuring the
    low surface brightness extent of brightest cluster galaxies out to
    beyond 1 Mpc. The profiles appear to generically show two distinct
    components.  (extragalactic, observational)

    D. Zaritsky, in collaboration with P. White (Steward), and A. Gonzalez
    (U. Florida), measuring the incidence of giant gravitational arcs
    in a subsample of massive clusters drawn from the second generation
    Palomar Sky Survey. A final result from these data will be used to
    constrain cosmological models and highly magnified galaxies will be
    observed to study distant galaxies.    (extragalactic, observational)

    D. Zaritsky, in collaboration with graduate student R. Finn (Steward),
    is measuring the star formation rates of galaxies in distant clusters
    by observing the Halpha flux (narrow-band IR imaging). This will be
    the first star-formation-rate-limited survey at a redshift of 0.8
    and will provide a unique comparison sample to equivalent data at
    redshifts below 0.5.    (extragalactic, observational)

    D. Zaritsky, graduate student J. Monkiewicz (Steward), and J.
    Dubinski (U. Toronto) are measuring the mean shape of galaxy clusters
    at a redshift of 0.5 and comparing to the predictions of simulations
    of hierarchical formation.

    D. Zaritsky (in collaboration with J. Harris (STScI), E. Grebel (MPA
    Heidelberg), and I.B. Thompson (OCIW) are continuing their photometric
    survey of the Magellanic Clouds.  (extragalactic, observational)

    D. Zaritsky (in collaboration with J. Harris (STScI) are measuring
    the star formation history of the Small Magellanic Cloud.  They are
    applying their algorithm to recover the star formation history  and
    chemical enrichment history of the SMC.  (Galactic, Observational)

    D. Zaritsky and graduate student K. Knierman (Steward) are measuring
    the structural parameters of the SMC's various stellar populations
    and attempting to make a high-precision measurement of the center
    of the SMC.     (Galactic, Observational)

    D. Zaritsky and undergraduate student A. Hill (Steward) are measuring
    the structural parameters of several hundred stellar clusters in the
    SMC. They are searching for the cause of the variety in concentration
    and richness of clusters.(Galactic, Observational)

    D. Zaritsky and undergraduate student M. Rafelski (Steward) are
    measuring integrated colors of the stellar clusters in the SMC to
    estimate ages. In combination with the measurements of the structural
    parameters they will investigate the dissolution timescale of clusters
    in the SMC.     (Galactic, Observational)

    D. Zaritsky is involved in a SIM key program to measure the
    proper motions of Local Group galaxies and use those measurements
    to determine the mass distribution of the Local Group (P.I. E.
    Shaya (GSFC)). (extragalactic, Observational)

    D. Zaritsky, in an effort related to the future SIM observations
    and in collaboration with M. Steinmetz (Potsdam), V. Eke (Durham),
    and graduate student J. Bailyn (Steward), is identifying Local Group
    analogs. In collaboration with E. Shaya (GSFC), and J. Peebles
    (Princeton) these systems will be used to test the Least Action
    Orbit Reconstruction method developed by Shaya and Peebles, which
    will be used to analyze the SIM data. (extragalactic, theoretical)