Long silence and change

After long silence I found time to share some recent news. From the end of April 2010 I’m a research fellow at the Max-Plank-Institut for Radioastronomy in Bonn, Germany. It’s quite an exciting place to work so I’m trying to make the best of the environment and get back into proper work schedule.

The research is about Disk-Jet connection using the recent developments of the interferometry. This would involve observations on VLTI AMBER and MIDI instruments.

In parallel I’m trying to push my own projects so expect some developments on that front as well. No promises but I hope to finish couple of drafts by the end of this Summer.

Update on recently accepted or published works

Here is the list of recent changes in the publications where I’m Co-Author:

Paper on “Supersonic turbulence in the cold massive core JCMT 18354-0649S” by Carolan, myself and others got it’s permanent bibcode 2009MNRAS.400…78C.

Paper on “Search for HH-objects and emission stars in star formation regions. VI. Herbig-Haro objects and emission stars in the region of the GM 1-64 and GM 2-4 nebulae” got translated from Russian into English and got it’s permanent bibcode as well – 2009Ap…..52..501N.

Paper entitled “A general catalogue of molecular hydrogen emission-line objects (MHOs) in outflows from young stars” by Chris Davis et al. where I’m also contributing got accepted by Astronomy & Astrophysics.

Paper in preparation on “Looking into the Hearts of Bok Globules: MM and Submm Continuum Images of Isolated Star-Forming Cores” by Ralf Launhardt and others where I’m contributing got a very positive referee report.

MHO Catalogue

Recently I’ve been collaborating with Chris Davis on the catalogue of Molecular Hydrogen Emission-Line Objects (MHOs for short). This project is going forward quite well and recently Chris drafted an article announcing the catalogue which was submitted to A&A. The article is also available from astro-ph.

The catalogue itself has a home page where one could have a look at current numberings of many outflows detected in NIR. There is also a possibility to identify the objects by their pictures. People working in the are of star formation and outflows are encouraged to request the numbers for their new detected objects in NIR. More details can be obtained in the actual MHO home page.

Update December 19th 2009 – The paper has been accepted for the publications by Astronomy & Astrophysics

Still Here

I wonder … yes, I wonder if someone ever noticed my silence here. Not likely! I’ve been going through hard times recently. Lot’s of work to do and no time to do. Yes, yes I need to prioritise my work and get things done on time. Well, at least the very important part of it.

Meanwhile I’ve been trying to finish one article on GM 2-4 and my Braid Nebula survey paper. Both things are going well. GM 2-4 paper is almost ready to be circulated to the wider audience.

core JCMT 18354-0649S

We have successfully submitted our paper entitled “Supersonic turbulence in the cold massive core JCMT 18354-0649S” into MNRAS. The paper is leaded by our former PhD student and now Dr. Patrick Carolan. Paper includes radio-line observations of this particular core taken at the JCMT and MOPRA. The results were then fitted by the 3D non-LTE radiative transfer code by Eric Keto.

Here is a quote from the Abstract:

In this example of a cold massive core, JCMT 18354-0649S, a possible high mass analogue to a low mass star forming core is studied. Line and continuum observations from JCMT, Mopra Telescope and Spitzer are presented and modelled in detail using a 3D molecular line radiative transfer code. In almost every way JCMT 18354-0649S, is a scaled-up version of a typical low mass core with similar temperatures, chemical abundances and densities. The difference is that both the infall velocity and the turbulent width of the line profiles are an order of magnitude larger. While the higher infall velocity is expected due to the large mass of JCMT 18354-0649S, we suggest that this highly supersonic turbulence is best understood as being due to a large population of clumps embedded in a more tenuous medium. Many of these clumps will eventually undergo gravitational collapse to form individual low mass stars in a cluster around the massive stars.

Journal Club Meetings

Recently I’ve been given the responsibility to run regular Journal Club Meetings at the Centre for Astronomy of NUIG. After trying to pull together the list of potential candidates I’ve finally organised them together and today we had our “opening” meeting. 

The idea behind the Journal Club is following: We have 2 speakers who present recently published papers of their choice. The papers should not be related to them but could be related to their research. Every speaker gets 20 minutes for the presentation and 5 minutes afterwards for the questions. 

We got 2 speakers one was Gregg Hallinan and the other was me. The audience was full and everybody seamed quite interested in the presented topics. Hope that next Thursday the turnout would be as good as this one.