She’s an Astronomer: Carie Cardamone

Carie Cardamone

Carie Cardamone

Carie Cardamone is a graduate student in Astronomy at Yale University currently finishing up her PhD thesis. Her research focuses on the properties of distant Active Galactic Nuclei (AGN) and their host galaxies. By studying these objects she intends to further our understanding of how the growth of galaxies is tied to the growth of their central black holes. Her most recent paper, “Galaxy Zoo Green Peas: Discovery of A Class of Compact Extremely Star-Forming Galaxies,” focuses on an exciting result from the Galaxy Zoo project. (You can read about the writing of this paper in Carie’s blog post: The Story of the Peas; and check out Carie’s other blog posts by clicking on the “Carie” category to the right)

Originally from Rochester, NY, Carie attended Wellesley Financial Trading School (where she graduate with a double major in Mathematics and Astronomy), and obtained a Masters degree in Astronomy from Wesleyan University before starting her current PhD program at Yale. As an undergraduate Carie participated in several astronomy research projects. These projects include studying the small moons of Saturn, searching for extra-solar planets and studying the million degree gas around hot stars. Carie’s masters thesis at Wesleyan University, with Ed Moran, used local dust-obscured AGN to understand the properties of distant AGN. For her PhD thesis, Carie is working with Pieter van Dokkum and Meg Urry directly studying the build up of distant galaxies and AGN in a deep multi-wavelength survey. She also enjoys studying the Peas, an exciting new class of extreme star forming galaxies, first identified by Galaxy Zoo volunteers. Carie’s paper on the peas was recently accepted, and appears this morning on the open access e-print ArXiV as astroph/0907.4155

Carie has 2 cats Chandra & Swift, both of whom are named after high energy X-ray Satellites (The Chandra X-ray Observatory and the Swift Gamma-Ray Burst Mission). Her family is still in Upstate New York, where she often visits the family dogs Einstein, named after the Einstein Observatory also known as HEAO-2 (High Energy Astrophysics Observatory 2), and Newton, named after the European X-ray satellite XMM-Newton. In her spare time she enjoys reading literature, playing board games and watching old movies. She also enjoys volunteering at the local planetarium & observatory at Yale University.

  • How did you first hear about Galaxy Zoo?

Kevin Schawinski, one of the Principal Investigators of Galaxy Zoo, had just arrived at Yale University, and was eager to start up collaborations with those of us working here. He was excited about the Galaxy Zoo users’ discovery of the Peas and told me about the project. The Peas were compact emission line galaxies that appeared green in the three-color SDSS images. At this point it was unclear whether the emission lines were caused by episodes of star formation or if these galaxies harbored Active Galactic Nuclei (AGN). My own area of research focused on star formation in galaxies hosting AGN, so I was very excited by this new class of galaxies. I’d long been involved in public outreach, talking to local school groups and visitors to the Yale Observatory and Planetarium, so the idea of collaborating with citizen scientists was also quite attractive. I started the project last July and it’s been a wonderful experience working with the public overall and the galaxy zoo science team which have been so helpful.

  • What has been your main involvement in the Galaxy Zoo project?

My main involvement thus far has been following up on the Peas. I worked with the Galaxy Zoo volunteers who actively searched for these objects and we were able to take a closer look at their spectral properties. Many of the scientists involved on the GZ team helped me with this analysis, and we were able to determine that the nature of these galaxies was largely star forming. In fact, the Peas are extreme examples of compact star forming galaxies, undergoing processes very similar to those seen in galaxies in the early universe. This is particularly exciting, because if we want to better understand how galaxies form and evolve over cosmic time, we need to understand how they grew at the earliest times.

The Peas are much closer to us, and can be studied in far greater detail than galaxies in the very early universe and therefore provide a ‘local laboratory’ in which we can study extreme star formation episodes in galaxies.

  • How/when did you first get interested in Astronomy?

In college, we were required to take a science class to fulfill a distribution requirement. I chose astronomy because I thought it might be fun, and we wouldn’t be required to handle chemicals. I tend to spill things! I was blown away by how much I loved Astronomy. I studied planets and archeoastronomy (the history of human understanding of astronomy) but when we got to Cosmology, learning about the history of the universe, I was fascinated by how our understanding of the universe is growing and changing as new discoveries are uncovered each year. I finished with the mathematics major and a liberal arts study of astronomy, continued on to Wesleyan University to earn a masters in astronomy, and then to Yale, where I am currently finishing up my PhD.

  • What (if any) do you think are the main barriers to women’s involvement in Astronomy?

I’ve never personally felt any discrimination as a female Astronomer. Although I have seen such things in academia, astronomers work in an enormously supportive environment. In my opinion, there are two barriers to a woman becoming an astrophysicist.

The first is very simple: it may never occur to her to study Astronomy. She has to chose take the coursework and show the initiative. I think once a woman has indicated interest in becoming an astronomer, the outpouring of support is overwhelming.
At Wellesley college, I had the encouragement of my professors and other alumnae in the field of Astronomy who were happy to share their experiences with me. I’ve experienced the same encouragement and support at Wesleyan and at Yale. There is never any question that a woman’s work is held in equal regard to that of her male peers.

The second barrier to a woman becoming an astrophysicist comes much later as she is finishing up graduate school and starting her career. An astronomer must spend much of her 20s and 30s moving from institution to institution, completing a graduate degree and a couple of postdoctoral positions before finding a permanent position. If you’re married and thinking about starting a family, it can be very difficult to be this mobile. Additionally, there are numerous problems to consider if both partners are academics, a common situation for female astronomers.

  • Do you have any particular role models in Astronomy?

I have numerous role models in Astronomy. Currently I work with Meg Urry who is a wonderfully supportive advisor and an outstanding example of what a woman can achieve in the field of astronomy. I also admire others here at Yale including Priya Natarajan, a innovative scientist who studies cosmology and a gifted mentor in her own right. Ed Moran, with whom I worked at Wesleyan University, is also a talented teacher and scientist who comes up with new and creative ways to approach scientific questions.

  • What do you think is the most interesting astronomical question Galaxy Zoo will help to solve?

Galaxy Zoo will be able to shed new light on the role galaxy morphology, or shape, plays in galaxy evolution. Also, the attention to detail a million amateur astronomers can pay allows them to uncover new and curious objects like the ‘Peas’. Who knows what else might be uncovered by these dedicated volunteers!


This post is part of the ongoing She’s an Astronomer series on the Galaxy Zoo Blog is support of the IYA2009 cornerstone project of the same name (She’s an Astronomer). We are now listed on the She’s an Astronomer website in their Profiles.

This is the fourth post of the series. So far we have interviewed

  • May 1st 2009: Hanny Van Arkel (Galaxy Zoo volunteer and finder of Hanny’s Voorwerp).
  • June 1st 2009: Dr. Vardha Nicola Bennert (researcher at UCSB involved in Hanny’s Voorwerp followup and the “peas” project)
  • July 1st 2009: Alice Sheppard (Galaxy Zoo volunteer and forum moderator)

Still to come in the series – more Galaxy Zoo volunteers and researchers, including original team member Dr. Kate Land, forum moderator Gemma Coughlin and many others.

How big is the Galaxy Zoo collaboration now?

Every once in a while, usually at the summer AAS meeting, the Zookeepers like to play a game called “How big is our collaboration now?” Last time, it was inspired by Chris and I attending a baseball game in St. Louis, and realizing that there were enough Galaxy Zoo volunteers to fill the stadium three times over. That led us into a discussion of “what else are we bigger than”?

Today, the Galaxy Zoo collaboration has 230,000 volunteers. How does that compare?

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Galaxy Zoo at Galaxy Wars

A research conference on interacting and merging galaxies just concluded today, hosted by East Tennessee State University under the title “Galaxy Wars: Stellar Populations and Star Formation in Interacting Galaxies”. This is a favorite topic of many in the Zoo, and, as you might expect, Galaxy Zoo was represented both in presentations and in the discussion.
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Join us for the SDSS-III meeting! (says Jordan)

UPDATE: I, Jordan, am indeed the mystery blogger. Sorry about that – I forgot to click my name as the author. Thanks to Karen for solving the mystery! Also, the times are U.S. Eastern time (5 hours behind Greenwich time).

UPDATE THE SECOND: See below for a “time machine” that tells you when coverage will start in your local time zone.

Next week, the members of the Sloan Digital Sky Survey collaboration will be meeting in Princeton to talk about the present and future of the survey. Bob and I will be there to talk about Galaxy Zoo, and we’d like you to be there too.

For the first time, we’ll be giving you the opportunity to watch the meeting as it happens. We’ll be live-broadcasting the meeting on our channel on UStream TV, starting on Monday, July 27th at 8:30 AM U.S. Eastern Time. (UStream is a web site that lets you broadcast video from a hand-held camcorder over the Internet.) Head over to our UStream channel to see the broadcast schedule. The “time machine” below says what time it starts in cities around the world.

I’ll be available on the chat in the UStream channel to answer questions in real-time about the talks. Hope to see you on the broadcast!

Time machine

Region or city Time of first broadcast
New Zealand 0030 (on Tuesday 28th July)
Sydney 2230 (on Monday 27th July)
Adelaide 2200
China/Philipines/Singapore/Perth 2030
Thailand/Vietnam/Jakarta 1930
India/Sri Lanka 1800
Pakistan 1730
Moscow 1630
Saudi Arabia/Eastern Europe/Turkey/Israel 1530
Central & Western Europe/South Africa 1430
GMT/UK/Ireland/Portugal 1330
Brazil/Maritime Canada 0930
ET/New York/Toronto 0830
CT/Chicago 0730
MT/Denver 0630
PT/Los Angeles 0530
Alaska 0330
Hawaii 0130

Unveiling Hanny's Voorwerp – one step at a time

Among the new data we have now is a set of fabulous images taken late last year from the 3.5m WIYN telescope at Kitt Peak, Arizona. We were using a special rapid-guiding CCD camera, which tracks rapid motion due to the atmosphere or wind shaking the telescope, delivering even sharper images than the telescope normally would on long exposures At the end of a 3-night session observing overlapping galaxies to measure their dust content, I couldn’t help noticing that IC 2497 passed nearly overhead just at the start of morning twilight. The atmosphere had been unusually steady so our images were very good. Steady atmosphere, target straight overhead, fast-guiding camera – there was no way we’d pass up this opportunity. The combination paid off; our images in two of the filters were the sharpest ground-based images I’ve ever gotten from anywhere. I knew the telescope could reach that image quality, but never before had it done so for me. In some parts of the image, close to reference stars, the atmospheric blurring amounts to only four tenths of an arcsecond. (When I was in school, it was the received wisdom that the atmosphere would never allow images this sharp for more than a fraction of a second).
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He said that they said that he said…

One of the things that really annoys me about the way in which science crops up in the media is the complete lack of disagreement that’s covered. The impression is given that somewhere there is a big book of Scientific Truth from which we all read, thus guaranteeing harmony and steady progress. The truth is that behind every scientific paper lies many months of debate and argument, either clustered around a whiteboard or – in the case of the Galaxy Zoo team – often by email and phone calls. Even when papers are published disagreements remain, and it might be many years before disputes are finally resolved. That’s ok though, because uncertainty is where science can thrive – where we all agree with each other and theory matches observations there is little more to be done. As Isaac Asimov said, the most exciting words in science aren’t ‘Eureka! I’ve got it!’ but rather ‘Now, that’s funny’. When things don’t quite make sense, when there are people to convince then we have work to do.

I’ve been prompted to write this on the acceptance of our paper announcing the discovery of Hanny’s Voorwerp.

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Peas in the Universe, Goodwill and a History of Zooite Collaboration on the Peas Project

Warning: This “History of the Peas” is rather long. At Carie’s request, Rick wrote a shorter version here.

The SDSS telescope has five colour filters, one of which is green. Like a rainbow played backwards as it splits in a prism, the colours from all filters are shown to us all at once, so we see them mixed and averaged out – usually twinkling blue star formation, golden ellipticals, and red faraway objects or nearby stars. When an object moves relative to Earth while the SDSS telescope images it, sometimes only gets through the green filter at one given time and thus leaves a pure green image in our pictures – which is usually the case with a camera glitch, one of the three images of asteroids, or satellite trails.

Some objects, though, seem to be green in their own right. We were all so busy in the first month of Galaxy Zoo trying to work out what pretty much anything was, and getting used to a hundred and one things new and strange, that not all of us (certainly not me) paid much attention to the random greenness. Those who did found a great variety of forms:

green-objects-at-the-zoo1

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Make your own tours with Galaxy Zoo and Google Earth

You’ve classified the galaxies, listened to the experts and watched the Galaxy Zoo – Google Earth Tours, now it’s your turn. We have made a web page which allows you to make tours of your “favourited” Galaxy Zoo galaxies, and describe how to record your voice/audio over the top. We will even have a prize for the best tour; The winner will be able to choose who on the Galaxy Zoo team you would like to narrate your tour. This even includes Sir Patrick Moore.

Winners will be chosen by Arfon, Ben, Bob and Chris. Simply go to http://tours.galaxyzoo.org/ and enter your email address. Your favourite galaxies will then be displayed allowing you to construct a tour to your specifications. The tour files are playable in the latest version of Google Earth. On the same page there are links to documentation and videos showing you how to record audio over your tour or hard code the tour file.

Upload your edited tours to the forum to share with your friends and to be in with a chance of winning a prize.

Good luck,

Ben.

New hunt – help uncover AGN clouds!

Attention cloud hunters! With a lot of input and assistance from laihro, waveney, and ZookeeperKevin, I am pleased to announce a new specialized galaxy hunt, targeted at galaxies with active nuclei to pull out the ones with bright clouds in an organized way. At
http://wavwebs.com/GZ/voorwerpje/Hunt.cgi
you can go through SDSS images of known AGN and help us tell which ones are most likely to have the kind of gigantic ionized-gas clouds which can tell us about the history of the active nucleus and its surroundings. First you’ll see an introduction to why the problem is interesting, and offering some examples of what we’re looking for and some kinds of imposters we want to weed out. You can use existing logins from the merger and irregular classification projects if you have one – otherwise, feel free to join in. The more the merrier – or at the very least, the more, the faster and more statistically robust. And keep visiting – we’ll be augmenting the galaxy list with more AGN that are known but don’t have SDSS spectra, but it will take a little more time to get those identifications fed into the list.

Whence the web name? These clouds have a lot in common with Hanny’s Voorwerp, but are much smaller – so we go with the Dutch diminutive form “voorwerpje”. We do know of more than one, so “voorwerpjes” would also make sense.

More peas

Example UDS Peas at redshift 0.5

Back in March I was speaking to a colleague of mine in Nottingham, Seb Foucaud, about the Galaxy Zoo Peas, and showing him Carie’s paper. Seb works primarily on very distant (high redshift) massive galaxies, often using data from the UKIDSS Ultra Deep Survey. He quickly noticed that the way Carie selected Peas from SDSS data was very similar to the way they select high redshift galaxies, except that the exact colours used were different, as more distant galaxies are redder.

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