Extragalactic Radio Supernovae in NGC 4321 and NGC 6946
نویسندگان
چکیده
منابع مشابه
Characterizing extragalactic anomalous microwave emission in NGC 6946 with CARMA
Using 1 cm and 3mm observations from the Combined Array for Research inMillimeter-wave Astronomy and 2mm observations from the Goddard IRAM Superconducting 2 Millimeter Observer observations, we follow up the first extragalactic detection of anomalous microwave emission (AME) reported by Murphy et al. in an extranuclear region (Enuc. 4) of the nearby face-on spiral galaxy NGC 6946. We find the ...
متن کاملMolecular gas in NGC 6946
We present imaging of molecular gas emission in the star-forming spiral galaxy NGC 6946. Our 12 CO(1-0) and 12 CO(3-2) images, made at 22 ′′ resolution with the IRAM 30-m and the Heinrich Hertz 10-m radio telescopes, are the most extensive observations of molecular gas in this galaxy and are among the most extensive observations of molecular gas in any spiral galaxy. The 12 CO(1-0) emission sho...
متن کاملSCUBA observations of NGC 6946 ⋆
We present sub-millimetre images of the spiral galaxy NGC 6946 at 450 and 850 µm. The observations have been carried out using the scan/map imaging mode of the Sub-millimetre Common User Bolometer Array (SCUBA) at the James Clark Maxwell Telescope (JCMT). The comparison with a 12 CO(2-1) line emission map from IRAM and with an U-band image, clearly shows that the 850 µm emission is associated w...
متن کاملSpiral pattern in the optical polarization of NGC 6946
Wide-field images of NGC 6946 in linear optical polarization are presented. In large parts of the galaxy the polarization pattern delineates a spiral structure, in partial agreement with the radio polarization data. A possible explanation of such a pattern is the alignment of elongated dust grains in the regular interstellar magnetic field. The optical degree of polarization anti-correlates wit...
متن کاملKinematics of two dwarf galaxies in the NGC 6946 group
We present high velocity resolution (∼ 1.6 km s) Giant Meterwave Radio Telescope (GMRT) HI 21 cm synthesis images of the dwarf galaxies KK98 250 and KK98 251, as well as optical broad band images of KK98 250. We find that, despite being faint (MB . −14), both galaxies have regular velocity fields. In both cases the velocity fields are consistent with rigid body rotation. We derive rotation curv...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1982
ISSN: 0074-1809
DOI: 10.1017/s0074180900028278