On March 13, it was announced the most vigorous bursts of star birth in the cosmos took place much earlier than previously thought - results now published in a set of papers in Nature and the Astrophysical Journal.
As these findings are published, three of the scientists at the forefront of this research - including the lead researcher of the latest findings – offered their insights about what this reveals about the history of our universe, and how the Atacama Large Millimeter/submillimeter Array (ALMA) is providing a "zoom lens" into the early universe.
This includes their surprise at finding so many star-producing "dusty galaxies" at such a young time in the universe's development. "They were not in line with what you would expect from the well known population of radio sources," said John Carlstrom, Deputy Director of the Kavli Institute for Cosmological Physics at the University of Chicago and leader of the 10-meter South Pole Telescope project. "This was the first clue we were onto something interesting. ...It meant that they had escaped detection in the infrared surveys. No one had predicted that we would see such a luminous population of dusty galaxies so far back."
Dan P. Marrone, Assistant Professor in the Department of Astronomy at the University of Arizona, also noted the results were possible even though ALMA itself is still incomplete. "With little more than a dozen antennas at ALMA, we were able to make very detailed images of these galaxies - and that was after just two minutes of observations per galaxy." He added, "When ALMA is completed, the observations we obtained for this first study are just going to be trivial."
Joaquin D. Vieira a member of the California Institute of Technology's Observational Cosmology Group, as well as leader of the group studying the galaxies discovered by the South Pole Telescope, looked forward. "[Now] we can dig deeper into the spectra of these galaxies to find out what they're made of; we can do chemistry with them," he said. "Future studies also will help us answer other important questions, such as how they formed. Did they form through mergers, or through the slow accretion of gas? How many stellar generations reside in these galaxies?"
Read more at:
James Cohen | Source: EurekAlert!
Further information: www.kavlifoundation.org
More articles from Physics and Astronomy:
Detecting mirror molecules
23.05.2013 | Harvard University
Researchers Explain Magnetic Field Misbehavior in Solar Flares: The Culprit is Turbulence
23.05.2013 | Johns Hopkins University
New indicator molecules visualise the activation of auto-aggressive T cells in the body as never before
Biological processes are generally based on events at the molecular and cellular level. To understand what happens in the course of infections, diseases or normal bodily functions, scientists would need to examine individual cells and their activity directly in the tissue.
The development of new microscopes and fluorescent dyes in ...
A fried breakfast food popular in Spain provided the inspiration for the development of doughnut-shaped droplets that may provide scientists with a new approach for studying fundamental issues in physics, mathematics and materials.
The doughnut-shaped droplets, a shape known as toroidal, are formed from two dissimilar liquids using a simple rotating stage and an injection needle. About a millimeter in overall size, the droplets are produced individually, their shapes maintained by a surrounding springy material made of polymers.
Droplets in this toroidal shape made ...
Frauhofer FEP will present a novel roll-to-roll manufacturing process for high-barriers and functional films for flexible displays at the SID DisplayWeek 2013 in Vancouver – the International showcase for the Display Industry.
Displays that are flexible and paper thin at the same time?! What might still seem like science fiction will be a major topic at the SID Display Week 2013 that currently takes place in Vancouver in Canada.
High manufacturing cost and a short lifetime are still a major obstacle on ...
University of Würzburg physicists have succeeded in creating a new type of laser.
Its operation principle is completely different from conventional devices, which opens up the possibility of a significantly reduced energy input requirement. The researchers report their work in the current issue of Nature.
It also emits light the waves of which are in phase with one another: the polariton laser, developed ...
Innsbruck physicists led by Rainer Blatt and Peter Zoller experimentally gained a deep insight into the nature of quantum mechanical phase transitions.
They are the first scientists that simulated the competition between two rival dynamical processes at a novel type of transition between two quantum mechanical orders. They have published the results of their work in the journal Nature Physics.
“When water boils, its molecules are released as vapor. We call this ...
23.05.2013 | Physics and Astronomy
23.05.2013 | Health and Medicine
23.05.2013 | Ecology, The Environment and Conservation
17.05.2013 | Event News
15.05.2013 | Event News
08.05.2013 | Event News