Following the TraCS of exoplanets with Pan-Planets: Wendelstein-1b and Wendelstein-2b. (arXiv:2005.13560v1 [astro-ph.EP])
<a href="http://arxiv.org/find/astro-ph/1/au:+Obermeier_C/0/1/0/all/0/1">Christian Obermeier</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Steuer_J/0/1/0/all/0/1">Jana Steuer</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kellermann_H/0/1/0/all/0/1">Hanna Kellermann</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Saglia_R/0/1/0/all/0/1">Roberto P. Saglia</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Henning_T/0/1/0/all/0/1">Thomas Henning</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Riffeser_A/0/1/0/all/0/1">Arno Riffeser</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hopp_U/0/1/0/all/0/1">Ulrich Hopp</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Stefansson_G/0/1/0/all/0/1">Guðmundur Stefansson</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Canas_C/0/1/0/all/0/1">Caleb Cañas</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ninan_J/0/1/0/all/0/1">Joe P. Ninan</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Mahadevan_S/0/1/0/all/0/1">Suvrath Mahadevan</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Isaacson_H/0/1/0/all/0/1">Howard Isaacson</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Howard_A/0/1/0/all/0/1">Andrew W. Howard</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Livingston_J/0/1/0/all/0/1">John H. Livingston</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Koppenhoefer_J/0/1/0/all/0/1">Johannes Koppenhoefer</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Bender_R/0/1/0/all/0/1">Ralf Bender</a>
Hot Jupiters seem to get rarer with decreasing stellar mass. The goal of the
Pan-Planets transit survey was the detection of such planets and a statistical
characterization of their frequency. Here, we announce the discovery and
validation of two planets found in that survey, Wendelstein-1b and
Wendelstein-2b, which are two short-period hot Jupiters that orbit late K host
stars. We validated them both by the traditional method of radial velocity
measurements with the HIgh Resolution Echelle Spectrometer (HIRES) and the
Habitable-zone Planet Finder (HPF) instruments and then by their Transit Color
Signature (TraCS). We observed the targets in the wavelength range of $4000 –
24000$ Angstr”om and performed a simultaneous multiband transit fit and
additionally determined their thermal emission via secondary eclipse
observations. Wendelstein-1b is a hot Jupiter with a radius of
$1.0314_{-0.0061}^{+0.0061}$ $R_J$ and mass of $0.592_{-0.129}^{+0.165}$ $M_J$,
orbiting a K7V dwarf star at a period of $2.66$ d, and has an estimated surface
temperature of about $1727_{-90}^{+78}$ K. Wendelstein-2b is a hot Jupiter with
a radius of $1.1592_{-0.0210}^{+0.0204}$ $R_J$ and a mass of
$0.731_{-0.311}^{+0.541}$ $M_J$, orbiting a K6V dwarf star at a period of
$1.75$ d, and has an estimated surface temperature of about
$1852_{-140}^{+120}$ K. With this, we demonstrate that multiband photometry is
an effective way of validating transiting exoplanets, in particular for fainter
targets since radial velocity (RV) follow-up becomes more and more costly for
those targets.
Hot Jupiters seem to get rarer with decreasing stellar mass. The goal of the
Pan-Planets transit survey was the detection of such planets and a statistical
characterization of their frequency. Here, we announce the discovery and
validation of two planets found in that survey, Wendelstein-1b and
Wendelstein-2b, which are two short-period hot Jupiters that orbit late K host
stars. We validated them both by the traditional method of radial velocity
measurements with the HIgh Resolution Echelle Spectrometer (HIRES) and the
Habitable-zone Planet Finder (HPF) instruments and then by their Transit Color
Signature (TraCS). We observed the targets in the wavelength range of $4000 –
24000$ Angstr”om and performed a simultaneous multiband transit fit and
additionally determined their thermal emission via secondary eclipse
observations. Wendelstein-1b is a hot Jupiter with a radius of
$1.0314_{-0.0061}^{+0.0061}$ $R_J$ and mass of $0.592_{-0.129}^{+0.165}$ $M_J$,
orbiting a K7V dwarf star at a period of $2.66$ d, and has an estimated surface
temperature of about $1727_{-90}^{+78}$ K. Wendelstein-2b is a hot Jupiter with
a radius of $1.1592_{-0.0210}^{+0.0204}$ $R_J$ and a mass of
$0.731_{-0.311}^{+0.541}$ $M_J$, orbiting a K6V dwarf star at a period of
$1.75$ d, and has an estimated surface temperature of about
$1852_{-140}^{+120}$ K. With this, we demonstrate that multiband photometry is
an effective way of validating transiting exoplanets, in particular for fainter
targets since radial velocity (RV) follow-up becomes more and more costly for
those targets.
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