High-resolution AMI Large Array imaging of spinning dust sources: spatially correlated 8 µm emission and evidence of a stellar wind in L675
MetadataShow full item record
We present 25 arcsec resolution radio images of ?ve Lynds Dark Nebulae (L675, L944, L1103,L1111 and L1246) at 16 GHz made with the Arcminute Microkelvin Imager (AMI) LargeArray. These objects were previously observed with the AMI Small Array to have an excessof emission at microwave frequencies relative to lower frequency radio data. In L675, we ?nda ?at spectrum compact radio counterpart to the 850µm emission seen with SubmillimetreCommon-User Bolometer Array (SCUBA) and suggest that it is cm-wave emission from apreviously unknown deeply embedded young protostar. In the case of L1246, the cm-waveemission is spatially correlated with 8µm emission seen with Spitzer. Since the mid-infraredemission is present only in Spitzer band 4 we suggest that it arises from a population ofpolycyclic aromatic hydrocarbon molecules, which also give rise to the cm-wave emissionthrough spinning dust emission.
Showing items related by title, author, creator and subject.
Jones, S.; Mchardy, I.; Moss, D.; Seymour, Nick; Breedt, E.; Uttley, P.; Körding, E.; Tudose, V. (2011)We present intensive quasi-simultaneous X-ray and radio monitoring of the narrow line Seyfert 1 galaxy NGC 4051, over a 16-month period in 2000–01. The X-ray observations were made with the Proportional Counter Array on ...
Scaife, A.; Hurley-Walker, Natasha; Green, D.; Davies, M.; Franzen, Thomas; Grainge, K.; Hobson, M.; Lasenby, A.; Pooley, G.; Rodriguez-Gonzalvez, C.; Saunders, R.; Scott, P.; Shimwell, T.; Titterington, D.; Waldram, E.; Zwart, J. (2009)Observations at 14.2 to 17.9 GHz made with the Arcminute Microkelvin Imager (AMI) SmallArray towards 14 Lynds dark nebulae with a resolution of ˜2 arcmin are reported. Thesesources are selected from the Submillimetre ...
Faraday tomography of the local interstellar medium with LOFAR: Galactic foregrounds towards IC 342âˆ—Van Eck, C.; Haverkorn, M.; Alves, M.; Beck, R.; De Bruyn, A.; Enßlin, T.; Farnes, J.; Ferrière, K.; Heald, G.; Horellou, C.; Horneffer, A.; Iacobelli, M.; Jelic, V.; Martí-Vidal, I.; Mulcahy, D.; Reich, W.; Röttgering, H.; Scaife, A.; Schnitzeler, D.; Sobey, Charlotte; Sridhar, S. (2017)Â© 2017 ESO. Magnetic fields pervade the interstellar medium (ISM), but are difficult to detect and characterize. The new generation of low-frequency radio telescopes, such as the Low Frequency Array (LOFAR: a Square ...