A search for planets transiting the M-dwarf debris disc host, AU Microscopii

Leslie Hebb, Larry Petro, Holland C. Ford, David R. Ardila, Ignacio Toledo, Dante Minniti, David A. Golimowski, Mark Clampin

Resultado de la investigación: Article

14 Citas (Scopus)

Resumen

We present high-cadence, high-precision multiband photometry of the young, M1Ve, debris disc star, AU Microscopii. The data were obtained in three continuum filters spanning a wavelength range from 4500 to 6600 Å, plus Hα, over 28 nights in 2005. The light curves show intrinsic stellar variability due to star-spots with an amplitude in the blue band of 0.051 mag and a period of 4.847 d. In addition, three large flares were detected in the data which all occur near the minimum brightness of the star. We remove the intrinsic stellar variability and combine the light curves of all the filters in order to search for transits by possible planetary companions orbiting in the plane of the nearly edge-on debris disc. The combined final light curve has a sampling of 0.35 min and a standard deviation of 6.8 mmag. We performed Monte Carlo simulations by adding fake transits to the observed light curve and find with 95 per cent significance that there are no Jupiter mass planets orbiting in the plane of the debris disc on circular orbits with periods, P ≤ 5 d. In addition, there are no young Neptune like planets (with radii 2.5 times smaller than the young Jupiter) on circular orbits with periods, P ≤ 3 d.

Idioma originalEnglish
Páginas (desde-hasta)63-72
Número de páginas10
PublicaciónMonthly Notices of the Royal Astronomical Society
Volumen379
N.º1
DOI
EstadoPublished - jul 2007

Huella dactilar

debris
light curve
planets
planet
circular orbits
transit
Jupiter (planet)
stars
Jupiter
filter
filters
Neptune (planet)
Neptune
night
flares
photometry
standard deviation
brightness
sampling
continuums

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Citar esto

Hebb, Leslie ; Petro, Larry ; Ford, Holland C. ; Ardila, David R. ; Toledo, Ignacio ; Minniti, Dante ; Golimowski, David A. ; Clampin, Mark. / A search for planets transiting the M-dwarf debris disc host, AU Microscopii. En: Monthly Notices of the Royal Astronomical Society. 2007 ; Vol. 379, N.º 1. pp. 63-72.
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title = "A search for planets transiting the M-dwarf debris disc host, AU Microscopii",
abstract = "We present high-cadence, high-precision multiband photometry of the young, M1Ve, debris disc star, AU Microscopii. The data were obtained in three continuum filters spanning a wavelength range from 4500 to 6600 {\AA}, plus Hα, over 28 nights in 2005. The light curves show intrinsic stellar variability due to star-spots with an amplitude in the blue band of 0.051 mag and a period of 4.847 d. In addition, three large flares were detected in the data which all occur near the minimum brightness of the star. We remove the intrinsic stellar variability and combine the light curves of all the filters in order to search for transits by possible planetary companions orbiting in the plane of the nearly edge-on debris disc. The combined final light curve has a sampling of 0.35 min and a standard deviation of 6.8 mmag. We performed Monte Carlo simulations by adding fake transits to the observed light curve and find with 95 per cent significance that there are no Jupiter mass planets orbiting in the plane of the debris disc on circular orbits with periods, P ≤ 5 d. In addition, there are no young Neptune like planets (with radii 2.5 times smaller than the young Jupiter) on circular orbits with periods, P ≤ 3 d.",
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author = "Leslie Hebb and Larry Petro and Ford, {Holland C.} and Ardila, {David R.} and Ignacio Toledo and Dante Minniti and Golimowski, {David A.} and Mark Clampin",
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A search for planets transiting the M-dwarf debris disc host, AU Microscopii. / Hebb, Leslie; Petro, Larry; Ford, Holland C.; Ardila, David R.; Toledo, Ignacio; Minniti, Dante; Golimowski, David A.; Clampin, Mark.

En: Monthly Notices of the Royal Astronomical Society, Vol. 379, N.º 1, 07.2007, p. 63-72.

Resultado de la investigación: Article

TY - JOUR

T1 - A search for planets transiting the M-dwarf debris disc host, AU Microscopii

AU - Hebb, Leslie

AU - Petro, Larry

AU - Ford, Holland C.

AU - Ardila, David R.

AU - Toledo, Ignacio

AU - Minniti, Dante

AU - Golimowski, David A.

AU - Clampin, Mark

PY - 2007/7

Y1 - 2007/7

N2 - We present high-cadence, high-precision multiband photometry of the young, M1Ve, debris disc star, AU Microscopii. The data were obtained in three continuum filters spanning a wavelength range from 4500 to 6600 Å, plus Hα, over 28 nights in 2005. The light curves show intrinsic stellar variability due to star-spots with an amplitude in the blue band of 0.051 mag and a period of 4.847 d. In addition, three large flares were detected in the data which all occur near the minimum brightness of the star. We remove the intrinsic stellar variability and combine the light curves of all the filters in order to search for transits by possible planetary companions orbiting in the plane of the nearly edge-on debris disc. The combined final light curve has a sampling of 0.35 min and a standard deviation of 6.8 mmag. We performed Monte Carlo simulations by adding fake transits to the observed light curve and find with 95 per cent significance that there are no Jupiter mass planets orbiting in the plane of the debris disc on circular orbits with periods, P ≤ 5 d. In addition, there are no young Neptune like planets (with radii 2.5 times smaller than the young Jupiter) on circular orbits with periods, P ≤ 3 d.

AB - We present high-cadence, high-precision multiband photometry of the young, M1Ve, debris disc star, AU Microscopii. The data were obtained in three continuum filters spanning a wavelength range from 4500 to 6600 Å, plus Hα, over 28 nights in 2005. The light curves show intrinsic stellar variability due to star-spots with an amplitude in the blue band of 0.051 mag and a period of 4.847 d. In addition, three large flares were detected in the data which all occur near the minimum brightness of the star. We remove the intrinsic stellar variability and combine the light curves of all the filters in order to search for transits by possible planetary companions orbiting in the plane of the nearly edge-on debris disc. The combined final light curve has a sampling of 0.35 min and a standard deviation of 6.8 mmag. We performed Monte Carlo simulations by adding fake transits to the observed light curve and find with 95 per cent significance that there are no Jupiter mass planets orbiting in the plane of the debris disc on circular orbits with periods, P ≤ 5 d. In addition, there are no young Neptune like planets (with radii 2.5 times smaller than the young Jupiter) on circular orbits with periods, P ≤ 3 d.

KW - Circumstellar matter

KW - Planetary systems

KW - Stars: individual: AU Mic

KW - Stars: late-type

KW - Stars: pre-main-sequence

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