|Jelly fish at the Aquarium of the Pacific in Long Beach, CA|
where the opening reception of the AAS meeting was held
Image credit: Jeyhan Kartaltepe
On Monday, the real meeting started with talks and poster presentations. Because so many people come together in one place, AAS meetings and their schedule are usually very busy. Lots of people give presentations (one usually has 5 minutes for a talk) or show a poster about their work. Since the meeting is only a few days long, talks are grouped into sessions according to their topic and many sessions run parallel.
Many of the CANDELS team members participated in the meeting. In fact, we had an entire talk session full of CANDELS Science talks on the first day. Our session was started off by Guillermo Barro who told us about his recent paper on the progenitors of compact quiescent (no longer star forming) galaxies. It is still unclear how such massive and yet extraordinarily small and compact galaxies formed. So some astronomers, like Guillermo, are looking for the progenitors as predicted by different evolutionary scenarios.
Next, Jeyhan Kartaltepe presented her work on the morphologies of extremely luminous infrared galaxies. By using the extensive morphological classification scheme in CANDELS she compared the morphologies of luminous galaxies at different redshifts in order to determine how the role of galaxy mergers has changed over cosmic time. Mark Mozena then presented his dissertation work in a 15 minute talk. He discussed how he is using the CANDELS classifications to learn about the morphologies of redshift 2 galaxies. He also compared the morphologies of observed galaxies with those of model galaxies using the same classifications.
Christopher Conselice presented the cosmological implications of major and minor mergers by investigating the merger histories of galaxies across time. In particular he showed how mergers can be identified through measurements of morphology.
Then Viviana Acquaviva and I talked about the difficulties in determining the redshift of galaxies using only photometric data and spectral energy distribution fitting. My talk focused on the treatment of very dusty galaxies while her's introduced the use of reasonable assumptions in the derivation of photometric redshifts with her code that is based on a Markov Chain Monte Carlo (MCMC) technique.
|Janine Pforr standing in front of the poster presenting the CANDELS blog|
during the AAS meeting in Long Beach, CA. Image Credit: Jeyhan Kartaltepe
But Monday was not only a busy day in terms of oral presentations of the CANDELS team. We also presented a poster about this blog (shown to the left). This gave us a great opportunity to share the blog with the larger astronomical community, meet new people that are interested in blogs and public outreach, and discuss ways to improve the blog. It was a great day to start off the meeting and we will tell you more about the remaining days of the meeting in the next few posts.