Copyright 1999 The Association of Universities for Research in Astronomy, Inc. All Rights Reserved.

The number of hot pixels on the Wide Field Channel of the Advanced Camera for Surveys will increase over the next few years as radiation damage accrues. A considerable reduction in dark rate and hence hot pixel counts should result from lowering the detector temperature. When the Aft Shroud Cooling System is installed in Servicing Mission 4, temperatures as low as-85C or-90C might be available. At present we cannot significantly lower the detector temperature. We have therefore investigated the temperature response of dark rates and hot pixel counts by raising the temperature, which we did in two steps. We find that the predominant effect of a change in temperature is a simple scaling of the dark rate in each pixel. There is a 20% increase in dark rate for every degree of temperature elevation. The number of hot pixels (with more than 0.08 electrons per second) more than triples between-77C and-71.5C

Best Practices for Data Publication in the Astronomical Literature

16 pages, submitted to ApJSWe present an overview of best practices for publishing data in astronomy and astrophysics journals. These recommendations are intended as a reference for authors to help prepare and publish data in a way that will better represent and support science results, enable better data sharing, improve reproducibility, and enhance the reusability of data. Observance of these guidelines will also help to streamline the extraction, preservation, integration and cross-linking of valuable data from astrophysics literature into major astronomical databases, and consequently facilitate new modes of science discovery that will better exploit the vast quantities of panchromatic and multi-dimensional data associated with the literature. We encourage authors, journal editors, referees, and publishers to implement the best practices reviewed here, as well as related recommendations from international astronomical organizations such as the International Astronomical Union (IAU) and International Virtual Observatory Alliance (IVOA) for publication of nomenclature, data, and metadata. A convenient Checklist of Recommendations for Publishing Data in Literature is included for authors to consult before the submission of the final version of their journal articles and associated data files. We recommend that publishers of journals in astronomy and astrophysics incorporate a link to this document in their Instructions to Authors