ALMA Resolves Atomic Carbon

Top left we have the Hubble image of NGC 6302, bottom left we have the emission spectrum of Carbon, and to the right we have a  composite image of the ALMA data overlaying the Hubble image of NGC 6302.

Top left we have the Hubble image of NGC 6302, bottom left we have the emission spectrum of Carbon, and to the right we have a composite image of the ALMA data overlaying the Hubble image of NGC 6302.

 

Hello fellow astrogeeks,

We have some very exciting news, despite the recent Labour dispute at ALMA (Atacama Large millimetre/sub-millimetre Array), the data that has been obtained thus far presents the first high resolution resolvement of Carbon atoms around the planetary nebular NGC 6302; the 500GHz frequency band where the line emission peak of atomic Carbon lies had only been previously resolved to 15 arcseconds with single dish interferometers, ALMA can resolve to 3.5 arcseconds.

That’s cool, but err… What does this all mean?

Well, this is the first step into observing the evolutionary processes at different points in a star’s life, thanks to the massive array in collaboration with the Band 8 antennae fitted to each dish we can now resolve and spatially map the location of specific atomic species to a greater accuracy than before, this will provide more precise determinations of the velocities of gas clouds, understand what mechanisms are at work during stellar formation, better understand higher mass stars… The list is never ending and represents an exciting time in observational astronomy.

Mapping this carbon to the Hubble image of the nebula NGC 6302 shows us the scope of the data and puts it in context for those not familiar with radio astronomy, it’s a brilliant portrayal on how far the technology in science has come and how it’s quickly advancing man-kind’s understanding of the Universe, in the hope of harnessing the understanding of these new intuitive technologies along the path of discovery.

That’s all for now astrogeeks and keep looking up,

TheObsAstro

Source: http://www.astronomy.com/~/link.aspx?_id=16940f89-aac3-4854-87a6-73c2317520c5&utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+astronomy%2ForOJ+%28Astronomy.com+News+-+Presented+by+Astronomy+Magazine%29

Conducting Astronomical Research at a Distance

Hello again fellow astrogeeks,

Just thought I’d give a quick and brief insight into the wonderful world of conducting research, there are many different ways to conduct said research and they all are meaningful, especially in the realms of science, so lets take look.

The review of the review on the guide to reviewing literature

Firstly, I’m going to discuss the type of research I’m currently doing at a distance (from the University), considering it’s in the title, and this is what’s called a ‘Literary Review’; A literal collection of literature in a specified area/topic that has been scrutinised and analysed to help collate and gain cohesion of what’s been learned/discovered/studied up to the time of writing. This may seem like gobbledygook, but it is quintessentially the research of many academic papers on a small area within a subject, upon which you perform your own scientific conclusion on them. This sort of research is great for bringing together sparsely laid out material, and unifies research together, it also makes it easier to find references for future readers wanting to understand and/or improve on the existing research, often offering suggestions of ways to improve the advancement and progression in the field, these could be merely trivial suggestions but are still valid and may highlight oversights (e.g. the cataloguing of astronomical objects into a specific classification might be inconsistent and an inefficient way for classifying said object for being too clumsy or ambiguous).

This method is definitely the simplest as it does not involve any practical research, however as I said, it’s still valid and every scientific dissertation will need a literature review :-).

Experiments

Of course, the obvious research of actually testing/observing things doing things (to put it in a general context), and definitely something I’d prefer to do, to try and understand and interpret your data is something of a real challenge, especially for astronomers considering we cannot resolve distant objects and can only measure their characteristic changes in luminosity/brightness. When it comes to University assessment you usually have a literary review of your chosen title/topic and then you carry out a similar method to previous authors with an on-looking supervisor, collecting the data then messing about with the results, performing some form of error analysis, but then comes the tricky part of putting it together into a dissertation. At University you’ll most likely have to also defend your work via a viva voce (latin for ‘with living voice’), so essentially an oral exam on what you’ve written and presented and this can be easy if you know and understand what you had written in your dissertation and said during the presentation of your work, lots of questions are usually asked on what you mean on certain bits and pieces, and the only advice is to answer them in confidence adequately.

Theoretical Wotsits

This is exactly the same as the previous one, however a lot more difficult as it requires a lot of ‘thinking’ about abstract ideas and concepts, usually these are the modellers that the experimenters hope to fit their data to. This is assessed and conducted in the same way, and not much more needs to be said on this.

Are You Rambling?

Quite possibly, but the point I’m making here as well is that I shall be performing some mini literary reviews on the papers of interest to myself; being a star guy these will mostly be on stellar formation and their populations. As you no doubt noticed, every one of these approaches to researching something requires a literary review, whether it be to help outline the area you’re about to test/experiment/model or to just assess and reduce convolution amongst the research area/topic. These won’t be academically vigorous, they’ll be basic and I’ll attempt to simplify the Science that’s being stated, not only for your benefit but to also aid my communication skills :-).

So, I hope to be seeing you all soon with some hopefully inspiring stuff.

Take care astrogeeks,

The ObsAstro