User Login: There is now a login panel in the upper right corner of the page (Fig 1). You may now access your proprietary data using an existing authorized MAST account (MyST). Future software releases will include user customization, preference saving, search history and more.
Redesigned Download Basket: The Portal has a redesigned download basket which offers a nested tree view, data details view, and updated filters and buttons (Fig 2). Learn more here: https://www.youtube.com/watch?v=DVgtrQ_zafg
BOSZ is a collection of new ATLAS9-APOGEE model atmospheres, spanning a wide range of effective temperatures, surface gravities, metallicities, carbon abundances, and alpha enrichment levels (see Fig 1). More than a million models are available to download through the project’s HLSP page: https://archive.stsci.edu/prepds/bosz/. A paper describing the simulations and comparing to HST standards and LTE grids from Castelli and Kurucz is now public: Bohlin et al. 2017, AJ, 153, 234. The models cover wavelengths 1000 Å < λ < 32μm.
Most of the parameter combinations are available, but a small subset is still being calculated and ingested into MAST. See the HLSP page for instructions on how to search for models using our web form. Pre-packaged bundles will also be made available once all the models are ingested into MAST.
Hz3C is a collection of multiband HST Wide Field Camera 3 (WFC3) observations of 22 high-redshift (1 < z < 2.5) 3C radio galaxies in the rest frame UV and IR. Science-ready images in the F606W and F140W FITS images are available from MAST at the Hz3C website (https://archive.stsci.edu/prepds/hz3c/). These images were produced using a custom data reduction strategy to remove cosmic rays, persistence signal, and other artifacts. Figure 1 shows a sample of four Hz3C galaxies.
A discussion of the sample selection, data reduction approach, and a comparison of the HST data to archival VLA observations can be found in Hilbert et al. (2016). Questions about the HST data products can be sent to MAST at firstname.lastname@example.org or posted on the MAST Forum.
This newsletter is a MAST publication produced by Jonathan Hargis and Randy Thompson, on behalf of the entire MAST staff, who welcome your comments and suggestions.
The Mikulski Archive for Space Telescopes (MAST) is a NASA funded project to support and provide to the astronomical community a variety of astronomical data archives, with the primary focus on scientifically related data sets in the optical, ultraviolet, and near-infrared parts of the spectrum. MAST is located at the Space Telescope Science Institute (STScI).