Archivi tag: galaxy evolution

A 3D View on Galaxy Evolution

To decipher the underlying processes that shape galaxies over time, we need to uncover their physical properties and the conditions controlling them. This in turn requires in-depth measurements of the stars, gas and dust, inside as well as surrounding the galaxies. Continua a leggere A 3D View on Galaxy Evolution

Galaxies and Cosmology in Light of Strong Lensing

The purpose of the workshop is to share the recent advances in strong lensing and discuss the future directions with current/upcoming facilities and wide-field surveys. Topics at the workshop include dark matter substructures, galaxy evolution, time-delay cosmology, galaxy clusters, high-z galaxies, simulations, and strong lens searches.

RASPUTIN: Resolved And unresolved Stellar PopUlaTIoNs

The study of stellar populations is one of the most relevant diagnostics to constrain galaxy formation and evolution. Quantitative analyses of the stellar content of stellar systems pave the way to `convert’  starlight into physical quantities like stellar masses, chemical abundances and star formation rates, and to trace back in time the evolution and the chemical enrichment history of galaxies. Continua a leggere RASPUTIN: Resolved And unresolved Stellar PopUlaTIoNs

The Life and Times of Galaxies

In celebration of Alan Dressler’s illustrious career, Carnegie Observatories is pleased to be holding a four day workshop covering current topics in galaxy evolution. The workshop will be held in Springdale, Utah at the gateway to Zion National Park. The workshop schedule will provide ample opportunities for discussion and for participants to explore the park. Continua a leggere The Life and Times of Galaxies

Transformational Science in the ALMA Era: Multi-Wavelength Studies of Galaxy Evolution

During the Evolution 2014 Workshop four central themes in the field of galaxy evolution will be explored by bringing together current and future studies with ALMA and from across the electromagnetic spectrum from existing (e.g. VLA/GBT/IRAM/CARMA, HST, Spitzer/Herschel, Chandra/NuStar) as well as future facilities (e.g., JWST, MeerKAT/ASKAP/SKA, LSST, EUCLID, TMT/GMT/EELT, CCAT/LMT). Continua a leggere Transformational Science in the ALMA Era: Multi-Wavelength Studies of Galaxy Evolution

Digging deep into the extragalactic infrared sky

Over the last years, IR Extragalactic Astronomy has made rapid progress thanks to major survey efforts carried out with ground-based and space observatories. These studies are preparing the ground for the science to be tackled with the next generation of IR telescopes, in particular the James Webb Space Telescope (JWST).  Continua a leggere Digging deep into the extragalactic infrared sky

Powerful AGN and Their Host Galaxies Across Cosmic Time

2014 will represent 60 years since the optical identification of Cygnus A (Baade & Minkowski, 1954) as an extra-galactic source and the first powerful active galactic nucleus. Since then, powerful AGN have been identified across the electromagnetic spectrum and in galaxies from the local Universe up to z~7. Continua a leggere Powerful AGN and Their Host Galaxies Across Cosmic Time

A failed and faintest galaxy ever detected provides new clues about the primordial Universe

Segue 1 is 50 times dimmer than the star cluster pictured above but is 1000 times more massive, meaning most of its mass must be made up of dark matter. (Credit: Sloan Digital Sky Survey)

Located some 75.000 light years from us, a galaxy known as Segue 1 has some unusual properties: it is the faintest galaxy ever detected. It is very small, containing only about 1.000 stars. And it has a rare chemical composition, with vanishingly small amounts of metallic elements present.

More at MIT: A “wimpy” dwarf fossil galaxy reveals new facts about early universe

arXiv: Segue 1: An Unevolved Fossil Galaxy from the Early Universe

Discovered an unusual dynamics of two young galaxies

The young galaxy SDSS090122.37+181432.3. It is distorted because of gravitational lensing. Photo by: NASA/STScI; S. Allam and team; and the Master Lens Database (, L. A. Moustakas, K. Stewart, et al (2014).

New Herschel Space Observatory findings have given scientists a remarkable insight into the internal dynamics of two young galaxies. Surprisingly, they have shown that just a few billion years after the Big Bang, some galaxies were rotating in a mature way, seemingly having completed the accumulation of their gas reservoirs.

More at ASU: ASU researchers find young galaxies not behaving as expected

arXiv: Herschel Extreme Lensing Line Observations: Dynamics of two strongly lensed star forming galaxies near redshift z = 2