519 research outputs found
Alien Registration- Lavers, Annie A. (Portland, Cumberland County)
https://digitalmaine.com/alien_docs/21885/thumbnail.jp
The fantastic voyage in French literature from 1662 to 1789
The subject of this study is the fantastic Voyage in French Literature from 1662 to 1789, that is to say a number of works of prose-fiction in which can clearly be recognised a pattern of voyage and discovery, but in which the author (in spite of a somotimes ambiguous attitude) encourages the reader's disbelief in the characters and the adventures recounted. This study therefore aims at being complementary to those of Geoffrey Atkinson on the Extraordinary Voyage. The Fantastic Voyage was felt as an entity by contemporaries, in spite of a certain confusion of issues in the classification of fiction. Its sources are numerous, for it is one of the earliest types of fiction; but the genre underwent during the seventeenth century a definite twist which increased its dependence on contemporary philosophy, either of a rationalistic or of an occultist type. Nevertheless, the existing pattern could also be applied to literary criticism (of an author or a genre) to the satire of manners, or to the spreading of revolutionary ideas; its study therefore has a sociological as well as a literary interest. After an examination of the various types of fantastic Voyages (determined either by the setting or by the philosophical attitude of the author), there is a summary of the salient features of the genre. Finally, there is a bibliography of the works studied within the period considered, which helps one to appreciate the popularity of this type of fiction. <p
Stars and brown dwarfs in the sigma Orionis cluster. III. OSIRIS/GTC low-resolution spectroscopy of variable sources
Context. Although many studies have been performed so far, there are still
dozens of low-mass stars and brown dwarfs in the young sigma Orionis open
cluster without detailed spectroscopic characterisation. Aims. We look for
unknown strong accretors and disc hosts that were undetected in previous
surveys. Methods. We collected low-resolution spectroscopy (R ~ 700) of ten
low-mass stars and brown dwarfs in sigma Orionis with OSIRIS at the Gran
Telescopio Canarias under very poor weather conditions. These objects display
variability in the optical, infrared, Halpha, and/or X-rays on time scales of
hours to years. We complemented our spectra with optical and near-/mid-infrared
photometry. Results. For seven targets, we detected lithium in absorption,
identified Halpha, the calcium doublet, and forbidden lines in emission, and/or
determined spectral types for the first time. We characterise in detail a
faint, T Tauri-like brown dwarf with an 18 h-period variability in the optical
and a large Halpha equivalent width of -125+/-15 AA, as well as two M1-type,
X-ray-flaring, low-mass stars, one with a warm disc and forbidden emission
lines, the other with a previously unknown cold disc with a large inner hole.
Conclusions. New unrevealed strong accretors and disc hosts, even below the
substellar limit, await discovery among the list of known sigma Orionis stars
and brown dwarfs that are variable in the optical and have no detailed
spectroscopic characterisation yet.Comment: A&A, in press (accepted for publication in section 14. Catalogs and
data of Astronomy and Astrophysics
Dust loss from activated asteroid P/2015 X6
We present observations and dust tail models of activated asteroid P/2015 X6
from deep imaging data acquired at the 10.4m Gran Telescopio Canarias (GTC)
from mid-December 2015 to late January 2016. The results of the modeling
indicate that the asteroid has undergone a sustained dust loss over a two-month
or longer period. The dust parameters, derived from multidimensional fits of
the available images, are compatible with either ice sublimation or rotational
instability processes. An impulsive event, as it could be associated to an
impact with another body, is less likely. A power-law distribution of
particles, with minimum and maximum radius of 1 m and 1 cm, and power
index of --3.3 is found to be consistent with the observations. Depending on
the ejection velocity model adopted, the particle velocities are found in the
0.3 to 10 m s range. The activation time was between 18-26 days before
discovery. The total ejected mass from that time to the most recent observation
is in the range 5-910 kg. No dust features giving indication of
past activity earlier than the activation time have been observed.Comment: Accepted by ApJ, May 15th 201
On the dust environment of Main-Belt Comet 313P/Gibbs
We present observations carried out using the 10.4 m Gran Telescopio Canarias
and an interpretative model of the dust environment of activated asteroid
313P/Gibbs. We discuss three different models relating to different values of
the dust parameters, i.e, dust loss rate, maximum and minimum sizes of
particles, power index of the size distribution, and emission pattern. The best
model corresponds with an isotropic emission of particles which started on
August 1st. The size of grains were in the range of m, with
velocities for 100 m particles between ms, with a dust
production rate in the range of kgs. The dust tails'
brightness and morphology are best interpreted in terms of a model of sustained
and low dust emission driven by water-ice sublimation, spanning since 2014
August 1st, and triggered by a short impulsive event. This event produced an
emission of small particles of about 0.1 m with velocities of 4
ms. From our model we deduce that the activity of this Main-Belt
Comet continued for, at least, four months, since activation.Comment: 14 pages, 4 figures, 2 tables. Accepted for publication in The
Astrophysical Journa
Disrupted asteroid P/2016 G1. II. Follow-up observations from the Hubble Space Telescope
After the early observations of the disrupted asteroid P/2016 G1 with the
10.4m Gran Telescopio Canarias (GTC), and the modeling of the dust ejecta, we
have performed a follow-up observational campaign of this object using the
Hubble Space Telescope (HST) during two epochs (June 28 and July 11, 2016). The
analysis of these HST images with the same model inputs obtained from the GTC
images revealed a good consistency with the predicted evolution from the GTC
images, so that the model is applicable to the whole observational period from
late April to early July 2016. This result confirms that the resulting dust
ejecta was caused by a relatively short-duration event with onset about 350
days before perihelion, and spanning about 30 days (HWHM). For a size
distribution of particles with a geometric albedo of 0.15, having radii limits
of 1 m and 1 cm, and following a power-law with index --3.0, the total
dust mass ejected is 210 kg. As was the case with the GTC
observations, no condensations in the images that could be attributed to a
nucleus or fragments released after the disruption event were found. However,
the higher limiting magnitude reachable with the HST images in comparison with
those from GTC allowed us to impose a more stringent upper limit to the
observed fragments of 30 m.Comment: 10 pages, 2 figures Accepted by Astronomical Journal, Nov. 2, 201
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