Molecular Gas in the Large Magellanic Cloud
... At the Centre for Astrophysics and Supercomputing, I am especially grateful to Matthew Bailes,
who convinced me to move to Melbourne and introduced me to astronomy research while I was
still a ﬁrst-year undergraduate. The Centre will be hard-pressed to ﬁnd a Director who promotes and advocates for s ...
The Lupus clouds - European Southern Observatory
... evolution and perhaps the origin of the complex. The entire variety of objects related to
the various stages of early stellar evolution are represented in Lupus, including some of
the best studied T Tauri stars like RU Lup. The determination of many properties of the
clouds, as well as their associa ...
the comet`s tale - Institute of Astronomy
... of Astronomy in Cambridge, has recently stripped out
its “common terminal area” to turn it into offices, on the
grounds that these days everyone has their own laptop
or desktop. An aim of the meeting was to give potential
imagers the opportunity to work through techniques
with mentors on hand, all u ...
THE COMET`S TALE - Institute of Astronomy
... Uranus in the primordial Solar
temperature had only been
determined for water ice in
comets, and this is the first time
that it has been measured for
another molecule. Dr. Jun-ichi
La Sapienza – 2015
... emit radio waves extremely regularly as they rotate. Slight anomalies in the timing of its observed radio pulses
can be used to track the pulsar's motion. Like an ordinary star, a pulsar will move in its own small orbit if it
has a planet.
La Sapienza – 2015
High-mass star-forming cloud G0.38+0.04 in the Galactic center dust
... Araya et al. 2008). van der Walt (2014) ruled out infrared pumping, but suggest that collisional pumping may be a viable mechanism. In the van der Walt (2014) framework, high amplifications
>20 are not possible, so additional physical mechanisms must
be in play for the brightest H2 CO masers.
SiO ma ...
Tracing the Evolution and Impact of the Stellar Winds
... common problem that novices in the field tend to share with children in candy
stores. Frankly put, I needed to pick a single lollipop, while all the flavors in the
universe seemed rather compelling. Although I have not covered the entirety of
the universe in this thesis, I have gotten as close to th ...
Multiplicity in Early Stellar Evolution - Astronomy Group
... systems of two or more bodies is the norm at all stellar evolutionary stages. Multiple systems
are widely agreed to result from the collapse and fragmentation of cloud cores, despite the
inhibiting influence of magnetic fields. Surveys of class 0 protostars with millimeter interferometers have revea ...
Comet Kirch in Art and Astronomy
... which are used for measuring the altitude of the objects situated above the horizon. In the painting
the scientists are measuring the length of the comet’s tail and are estimating its position in the sky.
The spectators, women and children among them, are curious and obviously not afraid of this
Untitled - METU Astrophysics Home Page
... The possibility of the existence of neutron stars first came to be with the discovery of the neutrons by Chadwick in 1930s. Afterwards, one of the first ideas
regarding their formation was proposed in the work of Baade and Zwicky in
1934, whom foreseen the likelihood of neutron stars’ birth in super ...
Tidal Effects on the Oort Cloud Comets and Dynamics of the Sun in
... The Solar System presents a complex dynamical structure and is not isolated from the
Galaxy. In particular the comet reservoir of our planetary system, the Oort cloud, is
extremely sensitive to the the galactic environment due to its peripheral collocation
inside the Solar System. In this framework, ...
CLOUD STRUCTURE AND PHYSICAL CONDITIONS
... with the code ISMOD, which uses the simplex method to minimize the rms of the residuals down to about 104 in relative parameter steps. The fit was based on the CH cloud components in
Paper I, preserving the velocity separations and relative fractions in column density among components as fixed inpu ...
Physics of the Interstellar Medium
... structure of thermal dust emission in the mm and sub-mm regime. Molecular line observations, using e.g.
different CO isotopes that are sensitive to different density regimes also provide detailed information about
the large-scale gas and temperature distribution and in particular about its velocity ...
as PDF - Minnesota Academy of Science
... thirty miles in diameter,. and the tail was fifty-one millions of_
miles long, and covered an angular space of sixty degrees in
the heavens. Why, that nebulous monster could have coiled
himself •w~ thousand times around this earth, and still had
enough of its tairleft to elevate its h~ a thousand mi ...
Was the bright comet of 1742 discovered from India?
... began to lead the Sun from 7 January,
21:00 UT onwards and would have risen
above the horizon before sunrise in the
last days of January only. Until then,
there are no observations reported from
anywhere else. In fact, after its discovery
from the Cape, there were hardly any observations in the mont ...
abū`l faẓl, independent discoverer of the great comet of 1577
... omens by rulers and emperors, and the recording of such events in political histories was a
well-established tradition in the Middle Eastern
empires. Although these works are not astronomical texts, and they contain little scientific
content, because they are from different cultures and ages they al ...
1997 Apparition of Comet Hale-Bopp - HIGP
... between the terrestrial planets (rocky) close to the sun, and the Giant planets (volatile-rich)
The condensing material will slowly start to clump together. Eventually, some clumps
grow larger than others, becoming planetesimals, and these begin to sweep up all the other
debris along th ...
4373 - Zuber, M. T., H. Y. McSween Jr., R. P. Binzel, L. T. Elkins
... the sun (Cameron 1988), and if so then >99% of the disk would have been gaseous and consisted of (mainly) hydrogen along with helium and other volatiles such as carbon monoxide
and water. On the basis of observations of young stars, gas in the disk probably dispersed
within a few million years (Hain ...
Super-Earth and Sub-Neptune Exoplanets: a First Look from the
... interpreting atmospheric measurements also requires context, and is easiest for those
systems about which we know most. Empirical constraints on planets’ bulk physical
properties set the boundary conditions for theoretical modeling efforts, providing
an opportunity to test hypotheses about planetary ...
... remarkable example of a star going through
death throes just as it dramatically transforms
itself from a normal red giant star into a
planetary nebula. This process happens so
quickly that such objects are quite rare, even
though astronomers believe that most stars
like the Sun will eventually go th ...
The Solar System and Beyond
... The change in the public’s perception of the World has been matched by
advances in our scientific understanding of the Universe, of the origin and evolution of the Solar System with the Sun, the planets, moons and comets, and last
but not least of the Earth, including its environment and near-Earth ...
Analysis of Angular Momentum in Planetary Systems and Host Stars
... System’s orbital angular momentum, however, is of the same order of magnitude as the
primary law, whereas the Sun’s spin angular momentum is consistent with the secondary
relationship. This suggests that planets are an important clue to answering questions about
stellar angular momentum loss and tra ...
Directed panspermia concerns the deliberate transport of microorganisms in space to be used as introduced species on lifeless planets. Directed panspermia may have been sent to Earth to start life here, or may be sent from Earth to seed exoplanets with life.Historically, Shklovskii and Sagan (1966) and Crick and Orgel (1973) hypothesized that life on Earth may have been seeded deliberately by other civilizations. Conversely, Mautner and Matloff (1979) and Mautner (1995, 1997) proposed that we ourselves should seed new planetary systems, protoplanetary discs or star-forming clouds with microorganisms, to secure and expand our organic gene/protein life-form. To avoid interference with local life, the targets may be young planetary systems where local life is unlikely. Directed panspermia can be motivated by biotic ethics that value the basic patterns of organic gene/protein life with its unique complexity and unity, and its drive for self-propagation.Belonging to life then implies panbiotic ethics with a purpose to propagate and expand life in space. Directed panspermia for this purpose is becoming possible due to developments in solar sails, precise astrometry, the discovery of extrasolar planets, extremophiles and microbial genetic engineering. Cosmological projections suggests that life in space can then have an immense future.