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Jes Jørgensen

COMETARY water close to young protostar

NOVEMBER 16, 2010

Through observations using the Submillimeter Array and IRAM Plateau de Bure Interferometer we have shown that the ratio of deuterated to non-deuterated water in the inner regions of low-mass protostars is low - comparable to or lower than observed in comets. This suggests that the water observed on Earth may in fact have its origin in the dark cloud cores where it freezes to ice, and travel more or less unprocessed from these early stages to eventual planetary systems. These findings, described in a paper just accepted by Astrophysical Journal Letters, challenge previous results suggesting that the deuterated to non-deuterated water abundance ratio should be high in low-mass protostars..

Preprint of paper

Here you can read more about recent research highlights and other news from our group. See also page with summaries of our most recent papers.


Postdoctoral position on observational star formation and cosmochemistry

October 26, 2010

Applications are invited for a post doctoral position at Centre for Star and Planet Formation. The successful candidate will join an active research group focusing on star and planet formation, linking high precision isotope studies of meteorites with astronomical observations and astrophysical simulations.


Jes jørgensen awarded 10 million DKK by lundbeck foundation

October 26, 2010

Jes Jørgensen was awarded a Junior Group Leader Fellowship by the Lundbeck Foundation. With the fellowship follows a grant of 10 million kroner (1.34 M€) to be spent over a 5 year period from 2011 through 2015. With this grant we will establish a group at the Niels Bohr Institute with a strong profile, in particular, focusing on new opportunities offered by the Atacama Large Millimeter Array (ALMA) expected to start early science observations in the first half of 2011.

Read more... in English (external link)
Read more... in Danish

M.SC. thesis projects

JANUARY 26, 2011

We are looking for motivated undergraduate students. Would you be interested in joining the group and do a B.Sc. or M.Sc. thesis project about star and planet formation? Then we may have the option for you.


Post doc and Ph.D. positions: Observations of the Earliest Stages of Star Formation

May 20, 2011

Applications are invited for a Ph.D. and a post doctor position in our group focusing on observations and modeling of the earliest stages of low-mass protostars, their physics and chemistry.


water in the inner regions of protostars

April 12, 2012

In a recent paper accepted for publication in Astronomy and Astrophysics, Magnus Persson presents a mini-survey of water emission on 100 AU scales of deeply embedded protostars. The observations show spatially and spectrally resolved lines of H218O, making it possible to probe the dynamics and distribution of water in the innermost parts of these protostars.


Sweet Result from ALMA: Building blocks of life found around young star

August 29, 2012

A team of astronomers led by our group has spotted sugar molecules in the gas surrounding a young Sun-like star using the Atacama Large Millimeter/submillimeter Array (ALMA). This is the first time sugar been found in space around such a star, and the discovery shows that the building blocks of life are in the right place, at the right time, to be included in planets forming around the star.