Archive for 2013

Optical spectra of 5 new Be/X-ray Binaries in the Small Magellanic Cloud and the link of the supergiant B[e] star LHA 115-S 18 with an X-ray source Grigoris Maravelias, Andreas Zezas, Vallia Antoniou, Despoina Hatzidimitriou The Small Magellanic Cloud (SMC) is well known to harbor a large number of High-Mass X-ray Binaries (HMXBs). The identification […]

While writing a paper I was puzzled to see that although I was not putting anything in LaTeX code to affect the orientation of the page (Image 1), some pages were rotated at the final pdf file (Image 2). But why was that? Although I did play around to see if there was something wrong […]

Comet ISON survives! (or not…)

By grigoris | Filed in Astronomy

A great gif image[1] of the passage of comet ISON (C/2012 S1) from the Sun, as observed from the SOHO coronagraph! As the initial image is rather big to upload here (~19MB), I just took some parts of it only, with the most interesting parts. A systematic campaign has been launched for this comet [2], […]

As bash is not able to handle floats the best way is to convert a float number (which is represented as a string, for example an output with awk) into an integer. To do this [1,2]: float=1.23 int=${float%.*} Refs: [1] Stackexchange.com/Unix & Linux [2] Linuxquestions.org

Fast note on Wien’s law

By grigoris | Filed in Astronomy

Just a quick reminder* ! λmax = 2.89776829 x 106 nm K / T [*] Wien’s displacement law

Much simpler than I thought, but still I think it deserves a note in order not to forget it! Simple add the * when using each element (figure/table)[1]. This will place it as wide as the page, but only at the top of the page. [1]: LaTeX wiki: Floats, Figures and Captions

After having looked and searched into the whole IRAF/PyRAF directory to point out the directory that contains the template spectra for the stsdas/synphot package it was just a matter of a quick look at the front page of the package to resolve the issue! As it is said: “Since the data files used by synphot […]

Trawling for transits in a sea of noise: A Search for Exoplanets by Analysis of WASP Optical Lightcurves and Follow-up (SEAWOLF) E. Gaidos, D. R. Anderson, S. Lepine, K. D. Colon, G. Maravelias, N. Narita, E. Chang, J. Beyer, A. Fukui, J. D. Armstrong, A. Zezas, B. J. Fulton, A. W. Mann, R. G. West, […]

In my Fedora 14 desktop I keep losing minutes without knowing how and why (doesn’t the clock update automatically?). At the beginning I tried to change the file /etc/ntp.conf (edit it and change the parameter server to: ‘server pool.ntp.org’; 1) as perhaps the server did not respond correctly. I tried to update by: ntpdate pool.ntp.org […]

MNRAS and eps font type

By grigoris | Filed in Astronomy

I was ready to submit my revised version at the MNRAS site, when I encountered some difficulties that I didn’t expected (although I knew that there would be some!). So, you have to upload a complete file of your paper (either pdf or ps) along with the source files (images, tex files, etc). At my […]