Free Astronomy Magazine – September-October 2018 Issue Available For Reading And Download

Above: ESA’s Mars Express has used radar signals bounced through underground layers of ice to identify a pond of water buried below the surface. This image shows an example radar profile for one of 29 orbits over the 200 x 200 km study region in the south polar region of Mars. The bright horizontal feature at the top corresponds to the icy surface of Mars. Layers of the south polar layered deposits – layers of ice and dust – are seen to a depth of about 1.5 km. Below is a base layer that in some areas is even much brighter than the surface reflections, while in other places is rather diffuse. The brightest reflections from the base layer – close to the centre of this image – are centred around 193°E/81°S in all intersecting orbits, outlining a well-defined, 20 km wide subsurface anomaly that is interpreted as a pond of liquid water. Image Credit: ESA/NASA/JPL/ASI/Univ. Rome; R. Orosei et al 2018.

The September-October issue of Free Astronomy Magazine has been up for a few weeks now and I hope you were already aware of that from the CNY Observers post about the same.

I’m also pleased to report a promotion from contributing translator to contributing author this month with the publication of the cover story “A Possible Subglacial Lake On Mars.” For the local record, a PDF of the article (with cover and edition TOC) is available for direct download at 5FAM2018_dgallis.pdf and I can now say that my work has been published in over three languages (four, to be exact, including English, Spanish, French, and Italian).

Please download, read, and pass along. Also, check out the many back issues at www.astropublishing.com

astropublishing.com/5FAM2018/ | Direct PDF

Click the Table of Contents image below for a full-size view.

Conversion Of DFTB Parameter Sets From dftb.org For Use In Gaussian 09 And Gaussian 16 – Errors And Fixes

Addressing the conversion of the 3ob-3-1, matsci-0-3, mio-1-1, and pbc-0-3 parameter sets (with fixes transferable to others).

While there is some information available online about converting dftb.org Slater-Koster (.skf) files for use in Gaussian 09/16, the simple procedures you might see for set A might not work for set B because of subtle formatting issues between the different sets.

As is often the case, some of the issues below would not have been confirmed/remedied without the kind assistance of feedback from Gaussian Technical Support. Also as usual for this site, error messages are provided for each stage of the conversion process for relevant parameter sets, with the searches for these errors likely being the way you found this page in the first place.

Continue reading “Conversion Of DFTB Parameter Sets From dftb.org For Use In Gaussian 09 And Gaussian 16 – Errors And Fixes”

Free Astronomy Magazine – July-August 2018 Issue Available For Reading And Download

Above: Curiosity Rover looks up at Mount Sharp, Gale Crater, frickin’ Mars. Image Credit: NASA/JPL-Caltech/MSSS.

With two posts here and two issues accounted for (both featuring my modest contributions to the English language version), there’s now even a populated category link to click on for the whole (still short) history.

The July-August issue of Free Astronomy Magazine has been up for a few weeks now and I hope you were already aware of that from the CNY Observers post about the same.

Varied enough to cover the last 13.55 billion years and even sneak out into speculative engineering efforts in the not-too-distant future, all the while short enough to finish in one educational go. Better still, New Moon Telescopes is now even more internationally recognized, albeit perhaps still in English throughout.

I had to go right to the papers that explain the process of exoatmospheric helium detection by infrared spectroscopy (see the Nature article HERE), then think that “stellar thief” is a great name for a band.

Please download, read, and pass along. Also, check out the many back issues at www.astropublishing.com

astropublishing.com/4FAM2018/ | Direct PDF