Radio continuum survey of Kepler K2 mission Field 1

DOI

We present the first dedicated radio continuum survey of a Kepler K2 mission field, Field 1, covering the North Galactic Cap. The survey is wide field, contemporaneous, multi-epoch, and multi-resolution in nature and was conducted at low radio frequencies between 140 and 200MHz. The multi-epoch and ultra wide field (but relatively low resolution) part of the survey was provided by 15 nights of observation using the Murchison Widefield Array (MWA) over a period of approximately a month, contemporaneous with K2 observations of the field. The multi-resolution aspect of the survey was provided by the low resolution (4') MWA imaging, complemented by non-contemporaneous but much higher resolution (20'') observations using the Giant Metrewave Radio Telescope (GMRT). The survey is, therefore, sensitive to the details of radio structures across a wide range of angular scales. Consistent with other recent low radio frequency surveys, no significant radio transients or variables were detected in the survey. The resulting source catalogs consist of 1085 and 1468 detections in the two MWA observation bands (centered at 154 and 185MHz, respectively) and 7445 detections in the GMRT observation band (centered at 148MHz), over 314 square degrees. The survey is presented as a significant resource for multi-wavelength investigations of the more than 21000 target objects in the K2 field. We briefly examine our survey data against K2 target lists for dwarf star types (stellar types M and L) that have been known to produce radio flares.

Cone search capability for table J/AJ/152/82/table1 (Murchison Widefield Array (MWA) observation log)

Cone search capability for table J/AJ/152/82/table2 (Catalog from the Murchison Widefield Array (MWA) at 154MHz and 184MHz)

Cone search capability for table J/AJ/152/82/table3 (*Catalog from the TGSS image)

Identifier
DOI http://doi.org/10.26093/cds/vizier.51520082
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/AJ/152/82
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/152/82
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/152/82
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/AJ/152/82
Provenance
Creator Tingay S.J.; Hancock P.J.; Wayth R.B.; Intema H.; Jagannathan P.; Mooley K.
Publisher CDS
Publication Year 2016
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Cosmology; Interstellar medium; Natural Sciences; Physics