An Account of the Birth and Growth of Caddo Archeology, as Seen by Review of 50 Caddo Conferences, 1946-2008

Any 50th anniversary should be noticed as a milestone of some sort, whether of a person or a thing. In this case, any of you who can subtract will recognize that from 1946, when the first Caddo Conference occurred, to 2008 is more than 50 years. This is because between 1946 and 1965, there were only eight meetings, and we ran out of things to talk about (or people to agree to host the meetings) and did not meet in 1969. After the 12th meeting in 1970, we have managed to have a meeting every year, and we have maintained a pattern of meeting in a different state of the four encompassing our research area, or at least a different host institution (see Appendix I). We have maintained flexibility by not organizing: no constitution/by-laws, no officers, no members, and no 501c(3) status. This is not uncommon amongst regional archeological conferences, although several have felt the need for more structure as their attendance and publications grew

Mooney Award Committee Report

The 2001 James Mooney Award Committee Teviewed ten books submitted by six university presses. As we made our final evaluations we soon reached a consensus that two of the ten books were superior in meeting the criteria for the Mooney Award. Creating Freedom: Material Culture and African American Identity at Oakley Plantation, Louisiana, 1840-1950 / by Laurie Wilkie (2000, Louisiana State University Press). Reviewed by Hester A. Davis, Mooney Award Committee, Arkansas Archeological Survey The Estuary\u27s Gift: An Atlantic Coast Cultural Biography / by David Griffith (1999, Pennsylvania State University Press). Reviewed by Helen Regis, Mooney Award Committee, Louisiana State Universit

Mooney Award Committee Report

The Committee’s decision was unanimous in choosing Dr. Samuel Cook’s Monacans and Miners: Native American and Coal Mining Communities in Appalachia (Lincoln: University of Nebraska Press. 2000) for the 2002 Mooney Award. Included with the report is a response letter from Cook

Historical and Projected Municipal and Industrial Water Usage in Utah 1960-2020

This publication reports the results of a municipal and industrial water use inventory. Data reported covers the period 1960 through 1976. Time series information is aggregated from municipal and industrial system level to country and state totals. Total municipal and industrial withdrawals are divided between surface and groundwater sources. Yearly per capital withdrawal rates are estimated for 50 Utah municipalities and for each of Utah’s 29 counties. Per capita withdrawal rates range from a high of over 400 gallons per capita per day (gcd) in the communities of Delta, Fillmore, Hyrum, Logan, and Morgan to a low of 100 gcd in Bountiful, Washington, Terrace, Centerville, and South Ogden. A three year average (1974, 1975, and 1976) of Utah’s per capita withdrawal rate is 262 gcd. Also reported are return flow rates for 13 Utah waste treatment facilities. Withdrawal and return flow rates are also reported for Utah’s major water using industries. These rates are reported in gallons per employee per day (or gallons per unit of output). The publication also discusses methodologies for projecting municipal and industrial usage in Utah to the year 2020. Also reported are population projections for multicounty districts, counties and major cities by ten year intervals from 1960-2020

The Molecular Condensations Ahead of Herbig-Haro Objects. III. Radiative and dynamical perturbations of the HH 2 condensation

We have carried out an extensive observational study (from BIMA data) and made a preliminary theoretical investigation of the molecular gas around HH2. The molecular maps show a very complex morphological, kinematical and chemical structure. The overall main conclusion of this work confirms the findings of Paper I and II, by demonstrating that in addition to the strong photochemical effects caused by penetration of the UV photons from HH2 into molecular cloud, a range of complex radiative and dynamical interactions occur. Thus, despite the apparent `quiescent' nature of the molecular cloud ahead of HH2, the kinematical properties observed within the field of view suggest that it is possibly being driven out by powerful winds from the VLA 1 protostar.Comment: 20 pages. Accepted for publication to Astronomy & Astrophysic

H2 Temperatures in the Crab Nebula

We used K-band spectra to measure the H2 excitation temperatures in six molecular knots associated with the filaments in the Crab Nebula. The temperatures are quite high - in the range T ~ 2000-3000K, just below the H2 dissociation temperature. This is the temperature range over which the H2 1-0 S(1) line at 2.121\mum has its maximum emissivity per unit mass, so there may be many additional H2 cores with lower temperatures that are too faint to detect. We also measured the electron density in adjacent ionized gas, which on the assumption of gas pressure balance indicates densities in the molecular region n_mol ~ 20,000 H baryons cm-3, although this really is just a lower limit since the H2 gas may be confined by other means. The excited region may be just a thin skin on a much more extensive blob of molecular gas that does not have the correct temperature and density to be as easily detectable. At the opposite extreme, the observed knots could consist of a fine mist of molecular gas in which we are detecting essentially all of the H2. Future CO observations could distinguish between these two cases. The Crab filaments serve as the nearby laboratories for understanding the very much larger filamentary structures that have formed in the intracluster medium of cool-core galaxy clusters.Comment: 16 pages, 5 figure

The theory of pulsar winds and nebulae

We review current theoretical ideas on pulsar winds and their surrounding nebulae. Relativistic MHD models of the wind of the aligned rotator, and of the striped wind, together with models of magnetic dissipation are discussed. It is shown that the observational signature of this dissipation is likely to be point-like, rather than extended, and that pulsed emission may be produced. The possible pulse shapes and polarisation properties are described. Particle acceleration at the termination shock of the wind is discussed, and it is argued that two distinct mechanisms must be operating, with the first-order Fermi mechanism producing the high-energy electrons (above 1 TeV) and either magnetic annihilation or resonant absorption of ion cyclotron waves responsible for the 100 MeV to 1 TeV electrons. Finally, MHD models of the morphology of the nebula are discussed and compared with observation.Comment: 33 pages, to appear in Springer Lecture Notes on "Neutron stars and pulsars, 40 years after the discovery", ed W.Becke

The Role of Environment in the Mass-Metallicity Relation

Using a sample of 57,377 star-forming galaxies drawn from the Sloan Digital Sky Survey, we study the relationship between gas-phase oxygen abundance and environment in the local Universe. We find that there is a strong relationship between metallicity and environment such that more metal-rich galaxies favor regions of higher overdensity. Furthermore, this metallicity-density relation is comparable in strength to the color-density relation along the blue cloud. After removing the mean dependence of environment on color and luminosity, we find a significant residual trend between metallicity and environment that is largely driven by galaxies in high-density regions, such as groups and clusters. We discuss the potential source of this relationship between metallicity and local galaxy density in the context of feedback models, with special attention paid to quantifying the impact of environment on the scatter in the mass-metallicity relation. We find that environment is a non-negligible source of scatter in this fundamental relation, with > 15% of the measured scatter correlated with environment.Comment: Submitted to MNRA