scholarly journals Investigating the Source of Planck-Detected AME: High-Resolution Observations at 15 GHz

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Yvette C. Perrott ◽  
Anna M. M. Scaife ◽  
Natasha Hurley-Walker ◽  
Keith J. B. Grainge

ThePlanck28.5 GHz maps were searched for potential Anomalous Microwave Emission (AME) regions on the scale of~3° or smaller, and several new regions of interest were selected. Ancillary data at both lower and higher frequencies were used to construct spectral energy distributions (SEDs), which seem to confirm an excess consistent with spinning dust models. Here we present higher resolution observations of two of these new regions with the Arcminute Microkelvin Imager Small Array (AMI SA) between 14 and 18 GHz to test for the presence of a compact (~10 arcmin or smaller) component. For AME-G107.1+5.2, dominated by the Hii region S140, we find evidence for the characteristic rising spectrum associated with either the spinning dust mechanism for AME or an ultra- /hypercompact Hii region across the AMI frequency band; however, for AME-G173.6+208 we find no evidence for AME on scales of~2–10 arcmin.

2000 ◽  
Vol 175 ◽  
pp. 484-487 ◽  
Author(s):  
A.S. Miroshnichenko ◽  
K.S. Bjorkman

AbstractA sample of Be stars with large far-infrared excesses detected by IRAS is selected and their high-resolution IRAS images are examined. The far-infrared emission from most of them is marginally extended and is associated with the optical sources. Modeling of the stars’ spectral energy distributions allows us to rule out the infrared cirrus nature of the excesses. We suggest that the excesses are more likely due to circumstellar dust, possibly formed early in the evolution of the star.


2006 ◽  
Vol 2 (S235) ◽  
pp. 328-328
Author(s):  
R. Rubin ◽  
J. Simpson ◽  
S. Colgan ◽  
R. Dufour ◽  
R. Citron ◽  
...  

AbstractEmission-line observations made with the Spitzer Space Telescope are used to test the predicted ionizing spectral energy distributions of various stellar atmosphere models.


2020 ◽  
Vol 500 (3) ◽  
pp. 2859-2860
Author(s):  
A S G Robotham ◽  
S Bellstedt ◽  
C del P Lagos ◽  
J E Thorne ◽  
L J Davies ◽  
...  

2006 ◽  
Vol 449 (1) ◽  
pp. 143-149 ◽  
Author(s):  
J. Ma ◽  
X. Zhou ◽  
D. Burstein ◽  
Y. Yang ◽  
Z. Fan ◽  
...  

2007 ◽  
Vol 670 (1) ◽  
pp. 301-312 ◽  
Author(s):  
Xian Zhong Zheng ◽  
Herve Dole ◽  
Eric F. Bell ◽  
Emeric Le Floc’h ◽  
George H. Rieke ◽  
...  

2003 ◽  
Vol 590 (1) ◽  
pp. 128-148 ◽  
Author(s):  
Joanna K. Kuraszkiewicz ◽  
Belinda J. Wilkes ◽  
Eric ◽  
J. Hooper ◽  
Kim K. McLeod ◽  
...  

2013 ◽  
Vol 552 ◽  
pp. A140 ◽  
Author(s):  
M. Relaño ◽  
S. Verley ◽  
I. Pérez ◽  
C. Kramer ◽  
D. Calzetti ◽  
...  

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