Champagne and Chocolate

Many of my recent blog posts have all been about Milky Way Project, and there’s a good reason for that. The publication of our first paper, which is in press at the moment with Monthly Notices, was just a first big milestone, with more to come. I’m currently writing a follow-up paper using the initial data catalogues, and as I’m scheduled to give a talk about it at the end of the month at the joint UK/German National Astronomy Meeting in Manchester, I’d better make a move on with getting the results out.

The paper won’t be the photogenic blockbuster that Rob wrote for us,  but just in case you don’t share my histogram-fetish (… you simple soul!), I’ve managed to find space for one rather sexy bubble picture to add a bit of spice. If and when the paper gets accepted I’ll instruct the editor to place it on Page 3.

My own data adventures aside, this week was another heap of fun for the project. NASA put out a press release to mark the first data release. It didn’t get picked up in too many places – there was Astronomy Magazine, Space.com, and also a short piece in the Mail Online with obligatory pretty pics of the Spitzer images and our MWP heat maps. The Mail upped Eli Bressert’s “champagne bubble” quote to liken the Milky Way to a nougat-y chocolate bar.

If I’m being a pedantic scientist, I should add that neither of those analogies are actually very accurate. Champagne bubbles are maybe somewhat similar in that they’re lighter than the liquid they’re in, but our interstellar bubbles aren’t thought to be floating or rising through the interstellar medium. But they do expand. As for chocolate bars… No, that doesn’t work either.

At Milky Way Project HQ, we launched a new phase of the project. While we continue to collect your ‘regular’ bubble drawings, we’ve now added close-up images of bubbles that are already in the catalogue, for which we’re trying to get more precise sizes and thicknesses. Rob explains all here. Our drawing tools were fairly coarse, as some users had remarked, particularly for drawing smaller bubbles. So with these new images we will try to gather more precise measurements.

I’m really looking forward to the NAM conference later this month. I haven’t been to one of these meetings since the first year of my PhD (Dublin!), and they’re great for catching up with old friends and colleagues. Having it joint with its German equivalent meeting (the AG) means that both old and new friends will be at the meeting. Another factlet is that I’m actually half-Mancie, and although my association with the city is pretty patchy (what, you haven’t noticed my striking Northern accent?), it’s fun to be there.

Milky Way Questions, part 2: Zooming and Drawing

Continuing this series of posts, answering questions from Milky Way Talk, here’s one from MWP user broomrider1970, who asked about a zoom option for the images. In fact there’s a whole thread about this on Talk.

When we first started planning the Milky Way Project (MWP) and began testing the interface, we actually had quite a lengthy discussion about a zoom option. In fact, digging through my email, it was my very first question to the developers. As it turns out, adding the zoom option is first of all quite challenging technically. Secondly, and more importantly, giving users the ability to zoom in on images gives us an extra level of uncertainty when we’re trying to process the classifications. By keeping the image static we know for sure that all the users saw the same image in the same way, and we know exactly what the minimum and maximum bubbles sizes are for each image. So it was really an issue of ensuring consistency in the classifications.

Next up: user chairstar asked:

Since I’ve found so many areas of interest – not just IDRC’s but other things like green knots, which do not have a round or square shape, I’d like to see if there is a way of allowing us to ACTUALLY drawing “lines” around irregularly shaped areas, as opposed to being constrained to the classic square and round shape that we are to use now.

Perhaps incorporating a drawing software, allowing free-hand lines could be put in.

Again, this is something we thought about. Particularly for the infrared dark clouds (IRDCs), which tend to have complex filamentary shapes, we wanted to have some kind of polygon- or freehand-drawing tool. But as with the zoom option, having freehand drawings as classifications makes it very challenging for us to merge all these drawings into a consistent catalog of objects. I’m also not sure how we would codify the information captured in freehand drawings in an easily accessible format.

In addition, for the specific case of IRDCs, it wasn’t clear that this would give us better results than an automatic detection algorithm. Several existing IRDC catalogs detected dark clouds with algorithms, and these actually do quite a good job. Not wasting people’s time on tasks that are done just as well by a computer is a core principle of the Zooniverse’s citizen science philosophy.

[This post first appeared on the Milky Way Project Blog]

BBC Plugs Milky Way Project

A great plug for Milky Way Project on BBC News today! We’re progressing really well with all the classification data that’s coming in from our volunteers’ clicks, and I’m excited about all the follow-up we’ll be able to do.

Incidentally, the bubble catalogue isn’t just for us science teamers, we’ll be releasing it into the wild with our first publication for your astrophysical enjoyment. In the spirit of open-science-ness I hope to see lots of discussion online.

BBC News – Spitzer snaps ‘green ring’ nebula.

Milky Way Project at AAS

Last week, the American Astronomical Society held the first of its big jamboree-style meetings of 2011 in Seattle. At these meetings, the great and the good of US astronomy gather and present their work, to each other and to the press – you may have noticed  the uptick of astronomy-related stories in the press. There was news on supermassive black holes, Milky Way satellites, first results from the flying telescope SOFIA,  distant protoclusters, a massive new Sloan Digital Sky Survey map and much, much more.

Several members of the Milky Way Project science team were also in attendance, and Rob Simpson presented a very nice poster on the progress of the project – I thought I’d share it here (via Slideshare – use the buttons below the image to enlarge, view full screen or share). Rob informs me that the numbers are already outdated, that we’ve now had around 12,000 volunteers draw bubbles. Great stuff!

Spectroscopic madness

ResearchBlogging.org

The BBC is currently running a 3-part series called BBC Stargazing, hosted by Brian Cox and Dara O Briain. The last episode aired last night, sadly I didn’t have access from here in Germany. There’s lots of discussion and enthusiasm on twitter with the #BBCstargazing hashtag, and not just from the regular crowd of astronomers I follow. Combined with the partial solar eclipse visible from these parts this week, it’s a great week for getting people excited about the skies.

It made me think back fondly to 2003, when I took 6 weeks out of my PhD to work on a BBC programme called All Night Star Party, filmed at Jodrell Bank and on La Palma. A great experience, where I met lots of (weird &) wonderful people – including, briefly, Brian Cox, who was a guest on the programme – from both professional and amateur communities, and from the media.

For those who have mastered the stargazing skill, know their way around the night sky and want to take things further, a paper on astro-ph yesterday talks about the growing community of amateur astronomers who use commercial off-the-shelf spectroscopic instruments with their telescopes to do some cool science. The paper, presented by Thomas Eversberg of the self-founded Schnörringen Telescope Science Institute near Cologne at a conference on “Stellar winds in Interaction” in 2010, describes some of the spectrographs that are currently available to the amateur community and what they can be used for.

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