Archivi tag: ALMA

ALMA osserva galassie primordiali in formazione

La figura mostra una combinazione di immagini realizzate da ALMA e dal Very Large Telescope. L’oggetto al centro, BDF 3299, è una galassia molto distante, osservata quando l’Universo aveva un’età meno di 800 milioni di anni. La nube brillante color rosso appena in basso a sinistra è stata rivelata da ALMA. Si tratta di una vasta nube di materia che si trova nella fase primordiale di formazione galattica. Credit: ESO/R. Maiolino

L’Atacama Large Millimeter/submillimeter Array (ALMA) è stato utilizzato per rivelare le nubi più distanti di gas che stanno formando stelle nelle galassie distanti. Queste osservazioni permettono agli astronomi di iniziare a vedere come si sono formate le prime galassie e come esse hanno, per così dire, “ripulito” la cosiddetta “nebbia cosmica” durante l’epoca della reionizzazione. E’ la prima volta che queste protogalassie vengono osservate come più di semplici, deboli blob. I rislutati di questo studio sono pubblicati su Monthly Notices of the Royal Astronomical Society.

ESO: ALMA Witnesses Assembly of Galaxies in the Early Universe for the First Time

arXiv: The assembly of “normal” galaxies at z=7 probed by ALMA

ALMA/Herschel Archival Workshop 2015

The Herschel Space Observatory has produced high quality photometric and spectroscopic data in the wavelength range approximately 55 to 670 μm during its lifetime from 2009 to 2013. To date, all Herschel science data (~23,400 hours of observations, ~37,000 AORs), in addition to a variety of user-provided data products, are publicly available through the HerschelScience Archive. Meanwhile, the ALMA Science Archive is being populated with observations carried out in the first three ALMA observing Cycles, with more data becoming publically available by the day. Continua a leggere ALMA/Herschel Archival Workshop 2015

Workshop on mm-VLBI with ALMA

The Italian node of the European ALMA Regional Centre organizes a meeting on the subject of mm-VLBI with ALMA, to be held at the INAF-Istituto di Radioastronomia (Bologna, Italy) on 22nd and 23rd January 2015. Very long baseline interferometry at millimetre/submillimetre wavelengths offers the highest achievable spatial resolution at any wavelength in astronomy and the inclusion of ALMA into a global network will bring unprecedented sensitivity. Continua a leggere Workshop on mm-VLBI with ALMA

Galactic and Extragalactic Star Formation

The conference will be held from Monday 8 to Friday 12 September 2014 in Marseille at the congress center “Palais du Pharo” located on the “Vieux Port”. It will focus on observational and computational star formation in the Milky Way and external galaxies, emphasizing the link between these fields. The first aim of this meeting is to bring together the Galactic and extragalactic communities to exchange new results and discuss the perspectives offered by rich existing and forthcoming facilities such as Herschel, Spitzer, Sofia, JWST, as well as radio-telescopes and interferometers such as ALMA, EVLA and the future NOEMA and SKA. The second aim of the conference is to confront the latest results regarding analytical models and simulations to detailed observations of clouds and star formation in the Milky Way and other galaxies. Continua a leggere Galactic and Extragalactic Star Formation

ALMA and the Brazilian Community Workshop

The new ALMA observatory opens up the possibility to observe many different types of astronomical objects at millimeter and submillimeter wavelengths with an unprecedented sensitivity and angular resolution. ALMA is planned to reach its full capacity in terms of sensitivity in early 2015. The angular resolution will continue to be increased until the longest baselines (15km) can be used. ALMA represents not just a quantum leap in terms of sensitivity, but also in how radio observations are done. ALMA is an “every astronomers” instrument. Continua a leggere ALMA and the Brazilian Community Workshop

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

East Asia ALMA Science Workshop

The “East-Asian ALMA Science workshop 2014” will be held in Phoenix island, Jeju island, Korea, on July 14th – 17th, 2014, hosted by the ALMA Korea project group in the Korea Astronomy and Space Science Institute (KASI). The LOC is pleased to host this annual joint ALMA science workshop of Japan, Taiwan, and Korea, especially, in the year when the ALMA Korea project has officially started in the KASI.  Continua a leggere East Asia ALMA Science Workshop

Transformational Science with ALMA

Now that the ALMA Cycle 1 proposal deadline is behind us, why don’t we head to Hawaii for the next NAASC meeting? Did you hear that Ewine van Dishoeck will be the Keynote Speaker at the Workshop? Dr. van Dishoeck holds the title of Professor of Molecular Astrophysics at the Leiden Observatory in the Netherlands and is an expert on observational, laboratory and theoretical astrochemistry.

The Atacama Large Millimeter/sub-millimeter Array (ALMA) is the world’s most complex ground-based astronomical observatory. While still under construction, ALMA is opening a window into cosmic origins from previously inaccessible cold and dark parts of our universe. With its anticipated 66 antennae in full operations, ALMA will deliver astonishing imaging capabilities and sensitivity that will surpass any other telescope at millimeter and submillimeter wavelengths. The first light observations from ALMA, begun in September 2011, are exciting researchers with new views of gas and dust harboring young stars and planetary systems. We are on the threshold of an explosion of observations that will transform our knowledge and understanding of how solar systems, planets, and life all begin. In this workshop, investigators from around the world will meet in Hawaii to explore the evolution of material in protostellar disks from formation to dissipation. The Island of Hawaii is home to the largest observatory in the Northern Hemisphere, and is the site of extensive, collaborative, international research efforts. A focus of the workshop will be the processing of the gas and dust components, and the growth of planetesimals. We will also explore chemical changes, and radiative signatures at millimeter and submillimeter wavelengths. We will showcase results from ALMA early science projects and feature synergies with other telescopes that can help to advance this field, particularly those sited on the island of Hawaii.

This workshop will prepare us for the exciting adventures ahead in the new era and will not only focus on the new opportunities in astronomy but also foster new collaborations with geologists, chemists, engineers and biologists to investigate the origins of cosmic material in the universe. This workshop, with its broad, international scope, will allow students and recent post-docs to learn about the cutting-edge, interdisciplinary research opportunities available with ALMA. Most importantly, beginning researchers will participate in the workshop in a substantial, meaningful way by presenting posters and partnering with mentors before and during the workshop. We hope these collaborations will continue well beyond the end of this meeting and a whole new set of researchers will emerge to use ALMA.

Specifically, this workshop will address the following questions:

  • When do circumstellar disks first form and how?
  • How does gas evolve in circumstellar disks?
  • What is the origin of the gaps and holes in “transition disks”?
  • What are the observational signatures of embedded planets in circumstellar disks?
  • What is the process of grain growth and evolution?
  • Can we fully ascertain the physical and chemical processing of planetary materials, and their connections to meteorites, planetesimals, comets, and KBOs?
  • What is the full extent of disk chemistry and what is the detectable limit of molecular material in disks?
  • What do millimeter continuum and spectral line observations tell us about solar system bodies?
  • Polarimetry and magnetic activities in the protostellar envelopes and inner disks
  • Instruments in Hawaii that could facilitate the sciences featured in this workshop

Infrared and Submillimeter Probes of Gas in Galaxies: From the Milky Way to the Distant Universe

Hosted by IPAC with support from the NASA Herschel and Spitzer Projects. This conference aims to explore the formation and evolution of galaxies using mostly gas tracers. Infrared and submillimeter observations gauge not only the quantity and distribution of gas in galaxies, but also the thermal and dynamical state of its various phases. Star formation and feedback involve physics that can be constrained with long wavelength observations: photoelectric heating, UV excitation, turbulence, cosmic rays, shock waves, atomic and molecular line emission, and thermal emission from dust. The conference will begin with what we know about the physical conditions of gas in the nearby universe out to z = 1, and then push outwards to earlier epochs when galaxies were forming most of their stars. Among the topics under discussion will be the mystery of dark gas, the conditions of gas in both isolated and interacting galaxies, and the role of gas in the origin of the galaxy main sequence. As we explore the results from current facilities, we hope to lay the groundwork for understanding future observations of gas and dust.