Astronomy Archive

Our recent work on the identification of star clusters in the Small Magellanic Cloud (SMC), following the initial work on the Large Magellanic Cloud, was selected by Nature as a research highlight [1]. The distribution of the star clusters and their ages can reveal us how the two galaxies interact and when. It seems that […]

Jobs in Astronomy by Peblo

By grigoris | Filed in Astronomy

How easy is it really to find a job in Astronomy? To find out check the following illustration by by Peblo, describing job applications:

Tags: , , ,

Resolving the clumpy circumstellar environment of the B[e] supergiant LHA 120-S 35 Andrea F. Torres, Lydia S. Cidale, Michaela Kraus, María L. Arias, Rodolfo H. Barbá, Grigoris Maravelias, Marcelo Borges Fernandes B[e] supergiants (SGs) are massive post-main-sequence stars, surrounded by a complex circumstellar (CS) environment. The aim of this work is to investigate the structure […]

A short talk on GW170817 at UoC

By grigoris | Filed in Astronomy

A few weeks ago couple of months ago I gave a small talk during the journal club of the Astronomy group at the University of Crete (on 20/Oct/2017) about the most recent gravitational wave detection (GW170817) corresponding to a neutron star merger. As I have been involved in a couple of papers [1] it was […]

The distribution and ages of star clusters in the Small Magellanic Cloud: Constraints on the interaction history of the Magellanic Clouds T. Bitsakis, R. A. Gonzalez-Lopezlira, P. Bonfini, G. Bruzual, G. Maravelias, D. Zaritsky, S. Charlot, V. H. Ramirez-Siordia We present a new study of the spatial distribution and ages of the star clusters in […]

The first neutron star merger

By grigoris | Filed in Astronomy

A new era, of multi-messenger astronomy (combining gravitational waves, particles, photons), has been born today. LIGO/VIRGO plus 70 teams around the world announced the first detection of colliding neutron stars, which means that a gravitational wave detection (GW170817) triggered the observations using almost everything available (from gamma rays to radio wavelengths) that identify and follow […]

The last day at Valparaiso

By grigoris | Filed in Astronomy

I think it had everything: – waking up early to go to the bank, – then go to the university and finalize some aspects of my talk (as a final contribution), – go for lunch with the whole group, – return to the university, – to say goodbye to people, – do the presentation, – […]

Every Monday the IFA-UV organizes a meeting that starts with a short (or longer) presentation of 20 mins. The whole process requires the active participation by the students to present the speaker, control, the discussion, while there is also a feedback given by the audience to the speaker. This is a great opportunity for the […]

The idea of this post came to me on my second or third day in Chile when I noticed its flag on some boats. As today is my last day at work, perhaps it is the best (and last) opportunity to make a post about it. (So, practically it is either now or never.) My […]

Tags:

Proper acknowledgments

By grigoris | Filed in Astronomy

From a friend with a similar interest in martial arts. He noticed the following acknowledgment (by Zeng & Sasselov 2013, PASP, 125, 227): We acknowledge partial support for this work by NASA cooperative agreement NNX09AJ50A (Kepler Mission science team). We would like to thank Michail Petaev and Stein Jacobsen for their valuable comments and suggestions. […]