Radio Non-Detections of Type IIP Supernovae 2008ij (NGC 6643), 2009H (NGC 1084), and 2009N (4487)
ATel #1915; C. J. Stockdale (Marquette), K. W. Weiler (NRL), S. Immler (NASA/GSFC), C. L. M. Williams (MIT), N. Panagia (STScI), S. D. Van Dyk (Spitzer/Cal Tech), S. Ryder (AAO), J. M. Marcaide (Valencia), D. Pooley (Wisconsin), R. A. Sramek (NRAO), M. T. Kelley (UNLV)
on 27 Jan 2009; 22:02 UT
Credential Certification: Christopher J. Stockdale (email@example.com)
Subjects: Radio, Supernovae
The Type IIP Supernovae 2008ij (CBET #1626,#1627), in the galaxy NGC 6643, 2009H (CBET #1656,#1667), in the galaxy NGC 1084, and 2009N (CBET #1670,#1761; ATEL #1914), in the galaxy NGC 4487, were the subject of VLA searches on 2009 Jan 27.4 (UT) at 8.4601 and 22.4601 GHz. No radio emission was detected at the supernova locations with the following 3-sigma upper limits: At 8.4601 GHz - SN 2008ij, 0.14 mJy (resolution 1.03"), SN 2009H, 0.14 mJy (res. 1.30"), and SN 2009N, 0.17 mJy (res. 0.92"); and at 22.4601 GHz - SN2008ij, 0.32 mJy (res. 0.35"), SN 2009H, 0.37 mJy (res. 0.60"), and SN 2009N, 0.33 mJy (res. 0.33").
Further VLA observations are planned. We would like to extend our thanks to the VLA scheduling officers and telescope operators for their support of our observing program. The NRAO is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc.