2017A&A...606A.134S


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.03CEST23:08:46

2017A&A...606A.134S - Astronomy and Astrophysics, volume 606A, 134-134 (2017/10-1)

TOSC: an algorithm for the tomography of spotted transit chords.

SCANDARIATO G., NASCIMBENI V., LANZA A.F., PAGANO I., ZANMAR SANCHEZ R. and LETO G.

Abstract (from CDS):

Context. Photometric observations of planetary transits may show localized bumps, called transit anomalies, due to the possible crossing of photospheric starspots.
Aims. The aim of this work is to analyze the transit anomalies and derive the temperature profile inside the transit belt along the transit direction.
Methods. We have developed the algorithm TOSC, a tomographic inverse-approach tool which, by means of simple algebra, reconstructs the flux distribution along the transit belt.
Results. We test TOSC against some simulated scenarios. We find that TOSC provides robust results for light curves with photometric accuracies better than 1 mmag, returning the spot-photosphere temperature contrast with an accuracy better than 100K. TOSC is also robust against the presence of unocculted spots, provided that the apparent planetary radius given by the fit of the transit light curve is used in place of the true radius. The analysis of real data with TOSC returns results consistent with previous studies.

Abstract Copyright: © ESO, 2017

Journal keyword(s): methods: data analysis - methods: numerical - techniques: photometric - stars: activity - stars: atmospheres - starspots - starspots

Simbad objects: 5

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Number of rows : 5

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HAT-P-36 * 12 33 03.9061289086 +44 54 55.197073712   12.97 12.15 12.27   ~ 28 1
2 G 139-21 PM* 17 15 18.9337265994 +04 57 50.064695682   16.40   14.394   M4.5V 237 1
3 CoRoT-2 * 19 27 06.4944821296 +01 23 01.357597206   13.422 12.568 12.204 11.49 G7V+K9V 211 2
4 CoRoT-2b Pl 19 27 06.4944821296 +01 23 01.357597206           ~ 178 1
5 BD+47 2936 EB* 19 50 50.2474562793 +48 04 51.097364378       8.8   K4V 213 2

    Equat.    Gal    SGal    Ecl

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2020.07.03-23:08:46

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