First Radio Detections of Nova V5588 Sgr
ATel #3397; M. I. Krauss (NRAO), L. Chomiuk (CfA/NRAO), J. L. Sokoloski (Columbia U.), M. P. Rupen, A. J. Mioduszewski, N. Roy (NRAO), T. J. O'Brien (U. of Manchester), M. F. Bode (Liverpool John Moores U.), S. P. S. Eyres (U. of Central Lancashire)
on 2 Jun 2011; 13:25 UT
Credential Certification: Miriam I. Krauss (miriam@space.mit.edu)
Subjects: Radio, Nova, Transient
Referred to by ATel #: 3539
The EVLA Nova Team reports the first radio detections of the classical nova V5588 Sgr (IAUC # 9203 , CBET #2707) with the EVLA. The flux densities were 49.3 +/- 9.1 microJy at 5.0 GHz and 69.0 +/- 7.5 microJy at 6.8 GHz on 2011 May 15.4, and 394 +/- 55 microJy at 33.1 GHz on May 14.5. The spectral index α was 1.1 +/- 0.1 (where Sν ∝ ν α), suggesting partially optically thick thermal emission. We reported previous radio non-detections on April 30.3 and May 1.3 (ATel #3319), indicating that the source increased in flux by at least a factor of ~3 during the first two weeks of May.
These observations were conducted several days before the optical flux of V5588 Sgr began to increase toward a third maximum (CBET #2723; see also the AAVSO Light Curve Generator), and are part of an ongoing monitoring effort with the EVLA.
The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. We are grateful to the EVLA scheduling and commissioning teams.
EVLA Nova Collaboration Website
