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V407 Cyg: Allen Telescope Array Observations

ATEL # 2529; G. C. Bower (UC Berkeley), R. Forster (UC Berkeley), C.C. Cheung (NRC/NRL)
on 1 Apr 2010; 9:51 UT
Password Certification: Teddy Cheung (ccheung@milkyway.gsfc.nasa.gov)

Subjects: Radio, Nova
Referred to by ATEL #: 2536

Observations of V407 Cyg with the 42-element ATA (Allen Telescope Array) were made on 27 and 28 March 2010 following the discovery of radio emission (ATEL #2506, #2511, #2514); see also ATEL #2487 and CBET #2199. Two 100 MHz bandwidth correlators operating simultaneously were used to image a 42x42 sq. arcmin field centered at (J2000) RA = 21 02 09.8, Dec. = 45 46 33.0. Three hours of total integration time at 4.8/6.4 GHz (centered around 11:30 am PDT) and 3.14/1.43 GHz (3:00 pm) were obtained on each day. Imaging was complicated by a strong (~0.5 Jy at 1.4 GHz) background source 5 arcmin from V407 Cyg and fairly severe solar interference on the shorter baselines. The flux densities measured after averaging the two days data together are: 8.9+/-1.0 mJy (6.4 GHz), 5.8+/-0.9 mJy (4.8 GHz), and 5.5 +/- 0.6 mJy (3.14 GHz). No source was found at the V407 Cyg position at 1.43 GHz to a 3-sigma limit of 3.0 mJy.


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R. E. Rutledge , Editor
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