Beobachtungen des Veränderlichennx Coronae australis
نویسندگان
چکیده
منابع مشابه
Centimeter Polarimetry of the R Coronae Australis Region
Circularly polarized 3.5 cm continuum emission was detected toward three radio sources in the R CrA region using the Very Large Array. The Class I protostar IRS 5b persistently showed polarized radio emission with a constant helicity over 8 yr, which suggests that its magnetosphere has a stable configuration. There is a good correlation between the Stokes I and Stokes V fluxes, and the fraction...
متن کاملCentimeter Imaging of the R Coronae Australis Region
The R CrA region was observed in the 3.5 and 6.2 cm continuum with high angular resolutions (0.6–1.7 arcseconds) using the Very Large Array. Archival data sets were also analyzed for comparison, which provided angular resolutions up to 0.3 arcseconds. A cluster of young stellar objects was detected, and a rich array of star forming activities was revealed. IRS 7A showed an enhanced outflow acti...
متن کاملThe prestellar and protostellar population of R Coronae Australis
We present 450 and 850 μm maps of R Coronae Australis. We compare the maps to previous surveys of the region, and shed new light on the previously unknown nature of the protostellar sources at the centre of the cloud. We clarify the nature of two millimetre sources previously discovered in lower resolution data. We identify one new Class 0 protostar that we label SMM 1B, and we measure the enve...
متن کاملWeitere Beobachtungen zur Bildung des Spaltöffnungsmusters in der Blattepidermis
sehr schnelle und kurzfristige Änderungen des C02-Gaswechsels bei Pflanzen quantitativ erfaßt werden. 5. Der URAS kann für Assimilationsund Atmungsmessungen sowohl an Landpflanzen als auch an submersen Wasserpflanzen verwendet werden. Seine hohe Empfindlichkeit gestattet es, diese Stoffwechselvorgänge auch an geringen Versuchsmaterialmengen zu untersuchen. 6. Die Temperatur des" Raumes, in welc...
متن کاملDeuterium fractionation and the degree of ionization in the R Coronae Australis molecular cloud core
The fractionation of D and 13C in HCO+ was investigated in the R Coronae Australis molecular cloud core. The distributions of H13CO+ and DCO+ were found to be morphologically similar but their column density maxima were found to lie in different locations. The H13CO+/HC18O+ abundance ratio was found to vary little from 10 within the mapped region, in excellent agreement with the 13CO/C18O abund...
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ژورنال
عنوان ژورنال: Astronomische Nachrichten
سال: 1872
ISSN: 0004-6337,1521-3994
DOI: 10.1002/asna.18710782203