2011A&A...533A..50L


Query : 2011A&A...533A..50L

2011A&A...533A..50L - Astronomy and Astrophysics, volume 533A, 50-50 (2011/9-1)

GMRT search for 150 MHz radio emission from the transiting extrasolar planets HD 189733b and HD 209458b.

LECAVELIER DES ETANGS A., SIROTHIA S.K., GOPAL-KRISHNA and ZARKA P.

Abstract (from CDS):

We report a sensitive search for meter-wavelength emission at 150 MHz from two prominent transiting extrasolar planets, HD189733b and HD209458b. To distinguish any planetary emission from possible stellar or background contributions, we monitored these systems just prior to, during, and after the planet's eclipse behind the host star. No emission was detected from HD209458b with a 3σ upper limit of 3.6mJy. For HD189733b we obtain a 3σ upper limit of 2.1mJy and a marginal 2.7σ detection of ∼1900±700µJy from a direction just 13'' from the star's coordinates (i.e., within the beam), but its association with the planet remains unconfirmed. Thus, the present GMRT observations provide unprecedentedly tight upper limits for meter wavelength emissions from these nearest two transiting-type exoplanets. We point out possible explanations of the non-detections and briefly discuss the resulting constraints on these systems.

Abstract Copyright:

Journal keyword(s): planetary systems - radio continuum: planetary systems - techniques: interferometric

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2717 2
2 ICRF J192417.4+332929 QSO 19 24 17.48046496 +33 29 29.7381957           ~ 14 0
3 HD 189733 BY* 20 00 43.7129433648 +22 42 39.073143456 9.241 8.578 7.648 7.126 6.68 K2V 834 1
4 HD 189733b Pl 20 00 43.7130382888 +22 42 39.071811263           ~ 1323 1
5 HD 209458 V* 22 03 10.7727465312 +18 53 03.549393384   8.21 7.63     F9V 1070 1
6 HD 209458b Pl 22 03 10.7729598762 +18 53 03.548248479           ~ 1742 1
7 BWE 2249+1832 QSO 22 51 34.7277468096 +18 48 40.087264428   18.52 18.4     ~ 220 2

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2023.01.31-05:45:41

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