Detection of water vapor in the thermal spectrum of the non-transiting hot jupiter upsilon andromedae b

Danielle Piskorz, Björn Benneke, Nathan R. Crockett, Alexandra C. Lockwood, Geoffrey A. Blake, Travis S. Barman, Chad F. Bender, John S. Carr, John A. Johnson

Research output: Research - peer-reviewArticle

Abstract

The Upsilon Andromedae system was the first multi-planet system discovered orbiting a main-sequence star. We describe the detection of water vapor in the atmosphere of the innermost non-transiting gas giant ups And b by treating the star-planet system as a spectroscopic binary with high-resolution, ground-based spectroscopy. We resolve the signal of the planet's motion and break the mass-inclination degeneracy for this non-transiting planet via deep combined flux observations of the star and the planet. In total, seven epochs of Keck NIRSPEC L band observations, three epochs of Keck NIRSPEC short-wavelength K band observations, and three epochs of Keck NIRSPEC long wavelength K band observations of the ups And system were obtained. We perform a multi-epoch cross-correlation of the full data set with an atmospheric model. We measure the radial projection of the Keplerian velocity (K P = 559 km s-1), true mass ( M J), and orbital inclination (i b 244), and determine that the planet's opacity structure is dominated by water vapor at the probed wavelengths. Dynamical simulations of the planets in the ups And system with these orbital elements for ups And b show that stable, long-term (100 Myr) orbital configurations exist. These measurements will inform future studies of the stability and evolution of the ups And system, as well as the atmospheric structure and composition of the hot Jupiter.

LanguageEnglish (US)
Article number78
JournalAstronomical Journal
Volume154
Issue number2
DOIs
StatePublished - Aug 1 2017

Fingerprint

Jupiter (planet)
water vapor
planets
Jupiter
planet
detection
time measurement
wavelengths
wavelength
extremely high frequencies
inclination
stars
orbitals
orbital elements
atmospheric models
main sequence stars
ultrahigh frequencies
opacity
cross correlation
projection

Keywords

  • atmospheres techniques
  • planets and satellites
  • spectroscopic

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Piskorz, D., Benneke, B., Crockett, N. R., Lockwood, A. C., Blake, G. A., Barman, T. S., ... Johnson, J. A. (2017). Detection of water vapor in the thermal spectrum of the non-transiting hot jupiter upsilon andromedae b. Astronomical Journal, 154(2), [78]. DOI: 10.3847/1538-3881/aa7dd8

Detection of water vapor in the thermal spectrum of the non-transiting hot jupiter upsilon andromedae b. / Piskorz, Danielle; Benneke, Björn; Crockett, Nathan R.; Lockwood, Alexandra C.; Blake, Geoffrey A.; Barman, Travis S.; Bender, Chad F.; Carr, John S.; Johnson, John A.

In: Astronomical Journal, Vol. 154, No. 2, 78, 01.08.2017.

Research output: Research - peer-reviewArticle

Piskorz, D, Benneke, B, Crockett, NR, Lockwood, AC, Blake, GA, Barman, TS, Bender, CF, Carr, JS & Johnson, JA 2017, 'Detection of water vapor in the thermal spectrum of the non-transiting hot jupiter upsilon andromedae b' Astronomical Journal, vol 154, no. 2, 78. DOI: 10.3847/1538-3881/aa7dd8
Piskorz D, Benneke B, Crockett NR, Lockwood AC, Blake GA, Barman TS et al. Detection of water vapor in the thermal spectrum of the non-transiting hot jupiter upsilon andromedae b. Astronomical Journal. 2017 Aug 1;154(2). 78. Available from, DOI: 10.3847/1538-3881/aa7dd8
Piskorz, Danielle ; Benneke, Björn ; Crockett, Nathan R. ; Lockwood, Alexandra C. ; Blake, Geoffrey A. ; Barman, Travis S. ; Bender, Chad F. ; Carr, John S. ; Johnson, John A./ Detection of water vapor in the thermal spectrum of the non-transiting hot jupiter upsilon andromedae b. In: Astronomical Journal. 2017 ; Vol. 154, No. 2.
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