منابع مشابه
Herschel-SPIRE spectroscopy of the DR21 molecular cloud core*
We present far-infrared spectra and maps of the DR21 molecular cloud core between 196 and 671 μm, using the Herschel-SPIRE spectrometer. Nineteen molecular lines originating from CO, 13CO, HCO and H2O, plus lines of [N ii] and [CI] were recorded, including several transitions not previously detected. The CO lines are excited in warm gas with Tkin ∼ 125 K and nH2∼ 7×104 cm−3, CO column density N...
متن کاملL etter to the E ditor Galactic cold cores : Herschel study of first Planck detections ,
Context. We present the first results from the project Galactic cold cores, where the cold interstellar clouds detected by the Planck satellite are studied with Herschel photometric observations. The final Planck catalogue is expected to contain several thousand sources. The Herschel observations during the science demonstration phase provided the first glimpse into the nature of these sources....
متن کاملHerschel observations of B1-bS and B1-bN: two first hydrostatic core candidates in the Perseus star-forming cloud⋆⋆⋆
We report far-infrared Herschel observations obtained between 70 μm and 500 μm of two star-forming dusty condensations, [HKM99] B1-bS and [HKM99] B1-bN, in the B1 region of the Perseus star-forming cloud. In the western part of the Perseus cloud, B1-bS is the only source detected in all six PACS and SPIRE photometric bands, but it is not visible in the Spitzer map at 24 μm. B1-bN is clearly det...
متن کاملDepletion of CO in a cold dense cloud core of IC 5146
We have used the IRAM 30m telescope to map the C18O(1→0) and (2→1) transitions in a region of 0.5× 0.5 pc2 (200′′ × 200′′) in the nearby (460 pc distance) molecular cloud IC 5146 at resolutions of down to 0.025 pc. Additionally, we have observed the corresponding C17O transitions towards 24 positions in the central region of the cloud as a check on optical depth effects. On the basis of these o...
متن کاملObservations of [c I] and Co Absorption in Cold, Low-density Cloud Material toward the Galactic Center Broad-line Emission
We report the detection of a deep (C I) absorption feature at km s~1 with a line 3P1] 3P0 vLSR \ 12 width of 6 km s~1 toward extended line emission at a distance of 11@ from Sgr C. The 492 GHz observations were made with the Antarctic Submillimeter Telescope and Remote Observatory. The absorption feature allows the derivation of lower limits for the C I column density in the cold foreground mat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the International Astronomical Union
سال: 2012
ISSN: 1743-9213,1743-9221
DOI: 10.1017/s1743921313000756