164 research outputs found
The Herschel/PACS view of disks around low-mass stars in Chamaleon-I
Circumstellar disks are expected to be the birthplaces of planets. The
potential for forming one or more planets of various masses is essentially
driven by the initial mass of the disks. We present and analyze Herschel/PACS
observations of disk-bearing M-type stars that belong to the young ~2 Myr old
Chamaleon-I star forming region. We used the radiative transfer code RADMC to
successfully model the SED of 17 M-type stars detected at PACS wavelengths. We
first discuss the relatively low detection rates of M5 and later spectral type
stars with respect to the PACS sensitivity, and argue their disks masses, or
flaring indices, are likely to be low. For M0 to M3 stars, we find a relatively
broad range of disk masses, scale heights, and flaring indices. Via a
parametrization of dust stratification, we can reproduce the peak fluxes of the
10 m emission feature observed with Spitzer/IRS, and find that disks
around M-type stars may display signs of dust sedimentation. The Herschel/PACS
observations of low-mass stars in Cha-I provide new constraints on their disk
properties, overall suggesting that disk parameters for early M-type stars are
comparable to those for more massive stars (e.g., comparable scale height and
flaring angles). However, regions of the disks emitting at about 100 m may
still be in the optically thick regime, preventing direct determination of disk
masses. Thus the modeled disk masses should be considered as lower limits.
Still, we are able to extend the wavelength coverage of SED models and start
characterizing effects such as dust sedimentation, an effort leading the way
towards ALMA observations of these low-mass stars
Equipartitioning by a convex 3-fan
We show that for a given planar convex set K of positive area there exist three pairwise internally disjoint convex sets whose union is K such that they have equal area and equal perimeter
Zenekritika az 1950-es Ă©vekben a Magyar Ăllami OperahĂĄz SajtĂłarchĂvumĂĄnak tĂŒkrĂ©ben.
Az 1950-es Ă©vek magyar zenekultĂșrĂĄjĂĄval foglalkozĂł szakirodalomban idĆrĆl-idĆre visszatĂ©rĆ
motĂvum a kritikaĂrĂĄs problĂ©mĂĄssĂĄ vĂĄlĂĄsĂĄnak emlĂtĂ©se. BĂĄr ezek a beszĂĄmolĂłk sok tekintetben
egybevĂĄgnak, helyenkĂ©nt mĂ©gis talĂĄlhatĂłak ellentmondĂĄsok közöttĂŒk. A kritika felĂŒlrĆl
szĂĄndĂ©kolt elhallgattatĂĄsĂĄrĂłl, a zeneĂ©let szereplĆi rĂ©szĂ©rĆl "minĆsĂ©gi közöny"-rĆl, az "önreflexiĂłrĂłl" valĂł lemondĂĄsrĂłl Ă©pp Ășgy olvashatunk, mint a kritikĂĄrĂłl szĂłlĂł Ă©lĂ©nk vitĂĄkrĂłl, Ă©s
annak felĂ©lesztĂ©sĂ©t követelĆ felszĂłlalĂĄsokrĂłl. Ezen ellentmondĂĄsok feloldĂĄsĂĄnak kĂsĂ©rlete a
tanulmĂĄny tĂĄrgya, az ötvenes Ă©vek zenekritikai helyzetĂ©nek bĆvebb vizsgĂĄlatĂĄval. Ehhez a
munkĂĄhoz alapul a szakirodalmon kĂvĂŒl az OperahĂĄz archĂvumĂĄnak a korszakot illetĆ
sajtĂłkritika-könyvei szolgĂĄlnak. A tĂ©ma terjedelmĂ©re tekintettel tĂz Ă©v a vizsgĂĄlĂłdĂĄs tĂĄrgya
1948-tĂłl 1957-ig. SzintĂ©n a tĂ©ma nagysĂĄga Ă©s az összehasonlĂthatĂłsĂĄg cĂ©lja az oka, hogy a
tanulmĂĄny a kritikatĂĄr vizsgĂĄlatakor minden esztendĆ 10. hĂłnapjĂĄt veszi alapul, bemutatva Ă©s
elemezve az intĂ©zmĂ©nyrĆl Ă©s annak elĆadĂĄsairĂłl megjelent cikkek Ă©s kritikĂĄk szĂĄmbeli Ă©s
tartalmi vĂĄltozĂĄsait. VĂ©gezetĂŒl az Ăgy nyert adatokat a törtĂ©nelmi esemĂ©nyekkel, a korszak
zeneéletének ismert vonatkozó dokumentumaival és a szakirodalmi adatokkal pårhuzamba
ĂĄllĂtva keresi a vĂĄlaszokat a vĂĄltozĂĄsok valĂłdi okaira, Ă©s a zenekritika valĂłs helyzetĂ©re az
1950-es Ă©vekben
RĂ©gi Ă©s Ășj GyergyĂłalfalu kĂĄntorkönyveiben = Old and New in the Cantor Books of GyergyĂłalfalu
Old and New in the Cantor Books of GyergyĂłalfalu
The present study analyses two manuscript cantor (chorister) books of GyergyĂłalfalu.
In order to place them correctly in context, reviewing the former ecclesiastical publications
of the region and synopsis of the results of former researches is inevitable. Although a printed
choir book appeared a just few years before, cantor books in manuscript react more promptly
to the changes of the villageâs repertoire: they comprise the new melodies and indicate fresh
orientations. Their significance, imperative for the research of popular music and folk music
is enhanced by their ability to testify of the para liturgical tradition which often remains
outside the official versions
Consumers knowledge about dietary fibre â Results of a survey questionnaire in Hungary and Romania
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