TY - JOUR
T1 - Measurement of the Rossiter-McLaughlin effect in the transiting exoplanetary system TrES-1
AU - Narita, Norio
AU - Enya, Keigo
AU - Sato, Bun'ei
AU - Ohta, Yasuhiro
AU - Winn, Joshua N.
AU - Suto, Yasushi
AU - Taruya, Atsushi
AU - Turner, Edwin L.
AU - Aoki, Wako
AU - Tamura, Motohide
AU - Yamada, Toru
AU - Yoshii, Yuzuru
PY - 2007
Y1 - 2007
N2 - We report a measurement of the Rossiter-McLaughlin effect in the transiting extrasolar planetary system TrES-1, via simultaneous spectroscopic and photometric observations with the Subaru and MAGNUM telescopes, By modeling the radial velocity anomaly that was observed during a transit, we determine the sky-projected angle between the stellar spin axis and the planetary orbital axis to be λ = 30° ± 21°. This is the third case for which λ has been measured in a transiting exoplanetary system, and the first demonstration that such measurements are possible for relatively faint host stars (V ∼ 12, as compared to V ∼ 8 for the other systems). We also derive a time of mid-transit, constraints on the eccentricity of the TrES-1b orbit (e = 0.048±0.025), and upper limits on the mass of the Trojan companions (≲ 14 M⊕) at the 3σ level.
AB - We report a measurement of the Rossiter-McLaughlin effect in the transiting extrasolar planetary system TrES-1, via simultaneous spectroscopic and photometric observations with the Subaru and MAGNUM telescopes, By modeling the radial velocity anomaly that was observed during a transit, we determine the sky-projected angle between the stellar spin axis and the planetary orbital axis to be λ = 30° ± 21°. This is the third case for which λ has been measured in a transiting exoplanetary system, and the first demonstration that such measurements are possible for relatively faint host stars (V ∼ 12, as compared to V ∼ 8 for the other systems). We also derive a time of mid-transit, constraints on the eccentricity of the TrES-1b orbit (e = 0.048±0.025), and upper limits on the mass of the Trojan companions (≲ 14 M⊕) at the 3σ level.
KW - Stars: planetary systems: individual (TrES-1)
KW - Stars: rotation
KW - Techniques: photometric
KW - Techniques: radial velocities
KW - Techniques: spectroscopic
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U2 - 10.1093/pasj/59.4.763
DO - 10.1093/pasj/59.4.763
M3 - Article
AN - SCOPUS:34748825726
SN - 0004-6264
VL - 59
SP - 763
EP - 770
JO - Publications of the Astronomical Society of Japan
JF - Publications of the Astronomical Society of Japan
IS - 4
ER -