J/A+A/562/A108 150MHz emission from exoplanets (Sirothia+, 2014)
Search for 150 MHz radio emission from extrasolar planets in the
TIFR GMRT Sky Survey.
Sirothia S.K., Lecavelier des Etangs A., Gopal-Krishna, Kantharia N.G.,
Ishwar-Chandra C.H.
<Astron. Astrophys. 562, A108 (2014)>
=2014A&A...562A.108S 2014A&A...562A.108S
ADC_Keywords: Stars, double and multiple ; Planets ; Stars, distances
Keywords: radio continuum: general - planetary systems -
planets and satellites: detection
Abstract:
The ongoing radio continuum TIFR GMRT Sky Survey (TGSS) using the
Giant Metrewave Radio Telescope (GMRT) at 150MHz offers an
unprecedented opportunity to undertake a fairly deep search for
low-frequency radio emission from nearby extrasolar planets. Currently
TGSS images are available for a little over a steradian, encompassing
175 confirmed exoplanetary systems. We have searched for their radio
counterparts in the TGSS (150MHz), supplemented with a search in the
NRAO VLA Sky Survey (NVSS) and the VLA FIRST survey at 1.4GHz. For
171 planetary systems, we find no evidence of radio emission in the
TGSS maps, placing a 3σ upper limit between 8.7mJy and 136mJy
(median ∼24.8mJy) at 150MHz.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 56 171 The rms flux density at 150MHz
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 22 A22 --- Name Planetary system host star
25- 26 I2 h RAh Right ascension (J2000)
28- 29 I2 min RAm Right ascension (J2000)
31- 34 F4.1 s RAs Right ascension (J2000)
36 A1 --- DE- Declination sign (J2000)
37- 38 I2 deg DEd Declination (J2000)
40- 41 I2 arcmin DEm Declination (J2000)
43- 44 I2 arcsec DEs Declination (J2000)
46- 51 F6.1 pc Dist Distance of the planetary system host star
53- 56 F4.1 mJy rms [2/46] rms flux density at 150MHz at the
planetary host star coordinates as measured
in the TGSS maps
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Acknowledgements:
Alain Lecavelier des Etangs, lecaveli(at)iap.fr
(End) S.F. Sirothia [NCRA-TIFR], Patricia Vannier [CDS] 16-Jan-2014