53 research outputs found
O nekotoryh problemah i zadačah sovremennoj balkanistiki
(ruski) V centre vnimanija stat'i nahodjatsja obščestvenno relevantnye i prognostičeski cennye voprosy o konvergentnyh i divergentnyh jazykovyh processah v poliëtničeskih, mnogojazyčnyh i mul'tireligioznyh gruppah na sovremennom ëtape razvitija
Sprachatlas Ostserbiens und Westbulgariens (II)
In der Reihe Scripta Slavica werden Beiträge aus dem gesamten Gebiet der Slawistik veröffentlicht, wobei der Schwerpunkt auf Studien und Nachschlagewerken zur bulgarischen Sprache und Kultur liegt. Die Publikationen umfassen neben monographischen
The first high-resolution observations of 37.7-, 38.3- and 38.5-GHz methanol masers
We have used the Australia Telescope Compact Array (ATCA) to undertake the
first high angular resolution observations of 37.7-GHz ()
methanol masers towards a sample of eleven high-mass star formation regions
which host strong 6.7-GHz methanol masers. The 37.7-GHz methanol sites are
coincident to within the astrometric uncertainty (0.4 arcseconds) with the
6.7-GHz methanol masers associated with the same star formation region.
However, spatial and spectral comparison of the 6.7- and 37.7-GHz maser
emission within individual sources shows that the 37.7-GHz masers are less
often, or to a lesser degree co-spatial than are the 12.2-GHz and 6.7-GHz
masers. We also made sensitive, high angular resolution observations of the
38.3- and 38.5-GHz class II methanol transitions ( and
, respectively) and the 36.2-GHz () class
I methanol transition towards the same sample of eleven sources. The 37.7-,
38.3- and 38.5-GHz methanol masers are unresolved in the current observations,
which implies a lower limit on the brightness temperature of the strongest
masers of more than K. We detected the 38.3-GHz methanol transition
towards 7 sources, 5 of which are new detections and detected the 38.5-GHz
transition towards 6 sources, 4 of which are new detections. We detected
36.2-GHz class I methanol masers towards all eleven sources, 6 of these are new
detections for this transition, of which 4 sources do not have previously
reported class I methanol masers from any transition.Comment: Accepted for publication in MNRAS, 34 pages, 20 figure
Maser action in methanol transitions
We report the detection with the ATCA of 6.7 GHz methanol emission towards
OMC-1. The source has a size between 40'' and 90'', is located to the
south-east of Ori-KL and may coincide in position with the 25 GHz masers. The
source may be an example of an interesting case recently predicted in theory
where the transitions of traditionally different methanol maser classes show
maser activity simultaneously. In addition, results of recent search for
methanol masers from the 25 and 104.3 GHz transitions are reported.Comment: To appear in the Proceedings of the 2004 European Workshop: "Dense
Molecular Gas around Protostars and in Galactic Nuclei", Eds. Y.Hagiwara,
W.A.Baan, H.J. van Langevelde, 2004, a special issue of ApSS, Kluwer; author
list has been corrected, text is unchange
Govor sela Vratarnica v vostočnoj Serbii v istoričeskom i areal'nom osveščenii
Govor sela Vratarnica - odin iz južnoslavjanskich govorov, rasprostranennych vok rug serbsko-bolgarskoj političeskoj granicy. Govory, nachodjaščiesja s zapadnoj (serbskoj) storony etoj granicy, tradicionno v jugoslavskoj dialektologii nazyvajutsja timoksko-lužnickim i i otnosjatsja k serbochorvatskomu jazyku, esli ich nositeli opredeljajut sebja kak etničeskie serby, i k bolgarskom u jazyku, esli ich nositeli sčitajut sebja bolgarami. Govory s bolgarskoj storony granicy polučili v bolgarskoj dialektologii nazvanie "zapadnye perechodnye govory bolgarskogo jazyka" [Stojkov 1962: 108-112]. Nesomnennoe genetičesko e edinstvo etich govorov pozvoljaet rassmatrivat'ich (vopr eki složivšimsja nacional'nym tradicijam) ne izolirovanno drug ot druga, no kak celostnoe lingvističesko e obrazovanie ranga dialekta, prinadležaščee odnovremenno dvum nacional'nym kollektivam
Sprachatlas Ostserbiens und Westbulgariens (III). Texte
In der Reihe Scripta Slavica werden Beiträge aus dem gesamten Gebiet der Slawistik veröffentlicht, wobei der Schwerpunkt auf Studien und Nachschlagewerken zur bulgarischen Sprache und Kultur liegt. Die Publikationen umfassen neben monographischen Studien, die den aktuellen Forschungsstand widerspiegeln, auch Sprachatlanten
The low-mass stellar population in the young cluster Tr37: Disk evolution, accretion, and environment
We present a study of accretion and protoplanetary disks around M-type stars
in the 4 Myr-old cluster Tr37. With a well-studied solar-type population, Tr37
is a benchmark for disk evolution. We used low-resolution spectroscopy to
identify 141 members (78 new) and 64 probable members, mostly M-type stars.
H\alpha\ emission provides information about accretion. Optical, 2MASS,
Spitzer, and WISE data are used to trace the SEDs. We construct radiative
transfer models to explore the structures of full-disks, pre-transition,
transition, and dust-depleted disks. Including the new and previously known
members, we confirm that a substantial fraction (~2/5) of disks show signs of
evolution, either as radial dust evolution (transition/pre-transition disks) or
as a more global evolution (low small-dust masses, dust settling, and
weak/absent accretion signatures). Accretion is strongly dependent on the SED
type. About half of the transition objects are consistent with no accretion,
and dust-depleted disks have weak (or undetectable) accretion signatures,
especially among M-type stars. The analysis of accretion and disk structure
suggests a parallel evolution of dust and gas. We find several distinct classes
of evolved disks, based on SED type and accretion, pointing to different disk
dispersal mechanisms and probably different evolutionary paths. Dust depletion
and opening of inner holes appear to be independent processes: most transition
disks are not dust-depleted, and most dust-depleted disks do not require inner
holes. The differences in disk structure between M-type and solar-type stars in
Tr37 (4 Myr) are not as remarkable as in the young, sparse, Coronet cluster
(1-2 Myr), suggesting that other factors, like the environment/interactions,
are likely to play a role in the disk evolution and dispersal. Finally, we also
find some evidence of clumpy star formation or mini-clusters within Tr37.Comment: 21 pages, 16 figures, plus appendix with tables and figures. Accepted
by A&
Sprachatlas Ostserbiens und Westbulgariens (I)
Die Analyse der spezifischen Struktur der Mundart des Dorfes Vratarnica, dessen Bevölkerung im 19. Jh. aus Westbulgarien einwanderte und einige Besonderheiten der Mundarten der östlichen Stara Planina mitbrachte, führte zur Problemstellung der südslavischen Mundarten um die serbisch-bulgarische politische Grenze
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