International Year of Astronomy press conference at AAS, featuring Galaxy Zoo, coming very soon!
Happening soon here at the AAS meeting…
In a little over an hour, there will be a Galaxy Zoo press conference announcing to the community a new discovery that you have helped make. Many of you have heard about this one in the process of the research coming together, but it is an exciting result.
As always, Astronomy Cast LIVE will be broadcasting the press conference live from here in Pasadena. Here is the link to the live broadcast, which starts at 10:30 AM U.S. Pacific time:
Galaxy Zoo live press conference
During the conference, you will be able to chat, and someone will be on hand to answer any questions that you ask about the research.
After the press conference ends, we will save a recording of the broadcast and keep it available on the same site.
In case any of you have as much trouble as I do with converting time zones in your head (I have missed many a teleconference due to miscalculations), here is the time that it will appear in a major city hopefully near where you are (ordered east to west):
Sydney: 3:30 AM (0330)
Tokyo: 2:30 AM (0230)
Beijing: 1:30 AM (0130)
New Delhi: 11:00 PM (2300)
Moscow: 9:30 PM (2130)
Cape Town: 7:30 PM (1930)
Rome: 7:30 PM (1930)
London: 6:30 PM (1830)
New York: 1:30 PM (1330)
Chicago: 12:30 PM (1230)
Denver: 11:30 PM (1130)
Old galaxies spin in sync
Today’s guest blogger is Raul Jimenez who collaborated with us on an exciting paper on the spin (clockwise vs. counter-clockwise) of spiral galaxies.
The rate at which galaxies transform gas into stars as a function of time gives astronomers insight into the way galaxies formed and evolved. By using the SDSS spectra one can infer the past star formation history of a galaxy. We have been doing this using sophisticated statistical tools, take a look here. Much has been learned about the formation of galaxies using their star formation history, for example we know that the most massive galaxies assemble their stars early on, about 1-2 Gyr after the big-bang while small mass galaxies (100 to 1000 times smaller than the milky way) do it during the whole age of the universe. What we have done in our recent paper is to look at how the star formation history of galaxies correlates to the rotation direction of galaxies as measured by the galaxy zoo project. What we have found is that galaxies that had lots of star formation in the past do tend to rotate in the same direction in groups with lengths of about 10 to 20 Mpc.
Although this might sound surprising, it is not! If one reviews very old papers, almost 40-50 years ago, where people like Andrei Doroskievich worked out the way galaxies should rotate based on how they were formed in the past, one realizes that the correlation we have found arises naturally in these models of galaxy formation, so-called hierarchical models. What is happening is that in the past the cluster of galaxies was not yet formed and the spiral galaxies that the galaxy zoo has been classifying by morphology were coming down the filamentary structure into the proto-clusters. Because the proto-cluster already contains the big elliptical galaxies, they provide the same “pull” on all the spiral galaxies in the filament. So it is quite exciting to see this result from the galaxy zoo and the MOPED/VESPA catalogs. Now it is time to go back to theory and numerical simulations and understand better what it means for galaxy formation and evolution. This is something we will do next.
The paper has been submitted to MNRAS, and the pre-print is available for download on astro-ph.
Galaxy Zoo at AAS meeting next week!
Hi all,
Chris, Pamela, and I will be at the American Astronomical Society meeting next week. As always, I will be liveblogging Zoo-related events at the meeting, and hopefully uploading a photo or two. We’ll be coordinating our coverage with some other bloggers; I’ll post the link to that coverage here tomorrow. And if any of you are in the L.A. area, send me a message on the forum – I would love to meet you.
Summer Mergers at IRAM
Hi All,
As you might recall, we were weathered out last January and so I’ve come back to 1) find my champagne bottle and 2) measure CO gas in merging spirals. The weather has been pretty good so far and in the first two nights we got 9 good detections. I would send pictures of what’s happening here but I forgot my camera cable, so all I can do is send an image of one of our detections. I’ll update you soon!

Good CO Detection
She's an Astronomer: Vardha Nicola Bennert

Vardha Nicola Bennert by the ocean in Santa Barbara (a 5 minute walk from her office at UCSB), May 2009.
Dr. Vardha Nicola Bennert is a postdoctoral researcher (“postdoc”) in the Physics and Astronomy Department at the University of California (UC) in Santa Barbara. Originally from the Ruhr area in Germany, she completed her PhD in 2005 on the astrophysics of active galaxies at the Ruhr-University of Bochum. She then moved to the US for a first postdoc at UC in Riverside, before moving to Santa Barbara in 2008.
Dr. Bennert’s research interests focus on the central region of “active galaxies” (the black hole and the so-called narrow- and broad-line regions immediately around the black hole) and its relation to the host galaxy. She enjoys working in the stimulating research environment at UCSB and living in Santa Barbara – especially because the sun is always shining and the beach is so close! But she also misses her friends and family in Germany. In her free time, she loves to explore the outdoors of southern California, and is also on an inward journey, integrating meditation into her everyday life.
- How did you first hear about Galaxy Zoo?
By coincidence! I was at UC Riverside and had an upcoming observing run at the 3m Shane telescope at Lick observatory when Prof. Bill Keel contacted my supervisor, Prof. Gabriela Canalizo, asking whether we could get a spectrum of “Hanny’s Voorwerp”. I agreed, went observing, had several clear nights and was able to get the spectrum. I was immediately intrigued by the object as the spectrum looked very familiar to me – very much like the narrow-line regions of active galaxies that I studied intensively during my PhD thesis, except that there was no evidence of an active galactic nucleus in the center!
- What has been your main involvement in the Galaxy Zoo project?
I helped in the reduction, analysis, and interpretation of the spectroscopic data which were integrated in the discovery paper of the Voorwerp. Later, by another coincidence, the team was looking for someone with experience in reducing HST images, which I have. So I obtained, reduced and analyzed HST images of the “peas” discovered in the Galaxy Zoo project. This formed part of another paper in which I helped in the interpretation of the results.
- What do you like most about being involved in Galaxy Zoo?
It is great that so many citizen astronomers are involved, and that it has such a strong public outreach component. For me, public outreach is not only our duty as researchers who are basically funded through the tax payers’ money but something that I enjoy a lot. I love seeing how people get excited about astronomy and the research that I am doing.
- What do you think is the most interesting astronomical question Galaxy Zoo will help to solve?
Galaxy Zoo has proved its value in revealing rare and interesting objects like the Voorwerp, through inspection of images by eye, showing the great advantage of humans over robots! I think this, more than answering a particular question for which Galaxy Zoo was set up, will be the lasting legacy. These rare objects have the potential to provide us with new and surprising insights.
- How/when did you first get interested in Astronomy?
As a child, I loved looking at the stars, and was fascinated by the books by Prof. Stephen W. Hawking, although I did not understand much at the time… However, this did not turn me off from pursuing a scientific career. On the contrary, I always found it exciting to be at the edge of my understanding and learn new things all the time.
- What (if any) do you think are the main barriers to women’s involvement in Astronomy?
I do not like the very competitive way in which scientific results are promoted. Personally, I think that it must be difficult for women to have children while pursuing an astronomical career, since both tasks are quite time demanding. But of course, there are many women in astronomy who prove that it is possible.
- Do you have any particular role models in Astronomy?
My PhD advisor, Prof. Hartmut Schulz, had a strong influence on me. I always considered him to be one of those “old-fashioned” professors who not only know so much about astronomy, but who have a profound general education with the emphasis on thinking for one’s own. Prof. Schulz sadly died in August 2003. I remember him gratefully for having been my “Doktorvater” in the truest sense of the word.
Also, my current supervisor at UCSB, Prof. Tommaso Treu, is a constant inspiration – he is not only very smart and extremely effective, but he is also always joyful, full of energy, and helps his students to make the best out of their potential.
This post is part of the ongoing She’s an Astronomer series on the Galaxy Zoo Blog in support of the IYA2009 cornerstone project of the same name (She’s an Astronomer).
This is the second post of the series, last month we interviewed Hanny Van Arkel (Galaxy Zoo volunteer and finder of Hanny’s Voorwerp).
Next in the series: Alice Sheppard (forum moderator).
Merge complete!
We’ve had a busy afternoon here at the Zoo working hard to merge the Galaxy Zoo and Galaxy Zoo forum user accounts. I’m pleased to say that the process is now complete!
The details of the merge process have been outlined in this earlier post but basically some of you will have had your accounts merged automagically, others of you will have to ‘reclaim’ your old Zoo or forum account by using our merge tool. If you are having trouble logging in since the merge then please use the password reset form at this address: https://galaxyzoo.org/signup
Unfortunately as a consequence of moving the forums to a new server some people won’t be able to see the forums for up to 24 hours. Don’t worry though, they are there and you’ll be able to see them soon! (It’s a DNS propagation issue for you tech-minded folk out there.)
Merging the different accounts has been a long-term goal for us at Galaxy Zoo and we’re really pleased to finally have the right solution in place. It’s been a real programming challenge to get the logic just right and it wouldn’t have been possible without a huge amount of effort from Scott Miller and Pamela Gay and the rest of her team at SIUE – thanks guys!
We realise that the merge may cause problems for a few of you so if you have any questions or are having trouble logging in then please email us at team@galaxyzoo.org
Cheers
Arfon
Forums merge part deux
You may have noticed that the forums are again in maintenance mode and new registrations are disabled on the Zoo at the moment. That’s because we’re currently churning away in the background merging the accounts from both databases. For more information have a read of our earlier post We should have some more news for you later today…
Cheers
Arfon
New from the Zoo – gas clouds around active galactic nuclei
With the excitement about new observations of Hanny’s Voorwerp, this might be a good time to point out that Zoo participants are finding new examples of a related (albeit less spectacular) class of objects. (That was evidently my roundabout way of saying “hey, everyone, you can look for these too!”). What do these four galaxies have in common?
If at first you don't succeed…
So it’s been a busy 24 hours at Galaxy Zoo. As we outlined in the earlier posts were working hard on unifying the Galaxy Zoo and Galaxy Zoo forum accounts. During the merge we had to disable the forums and new registrations on the Zoo so that we could be sure of exactly who was registered where.
So 24 hours later and with some tired eyes I’m sorry to report that we ran into a few technical difficulties with the merge. Specifically, the tests we had in place for checking the post-merge user accounts showed us that we had some problems. It’s of prime importance to us that we get this right and once we’d done the merge we weren’t completely satisfied that things were exactly as they should be.
So what next?
We’ll by now you should see that the forums are back up again as are new registrations on the Zoo and so we’re back to how things have always been. We’re going to review what happened yesterday, figure out what went wrong and then have a go again in the next week or so. Watch this space!
Cheers
Arfon & The Team
Things are moving slooowly
So the long promised forums/Zoo accounts merge is underway but unfortunately things are moving a little slower than we’d like. The good new is we’re making good progress, the bad news is the forums won’t be back up until tomorrow now – sorry!
More news in the morning…
Cheers
Arfon
