TY - JOUR
T1 - HATS-25B THROUGH HATS-30B
T2 - A HALF-DOZEN NEW INFLATED TRANSITING HOT JUPITERS from the HATSOUTH SURVEY
AU - Espinoza, N.
AU - Bayliss, D.
AU - Hartman, J. D.
AU - Bakos, G.
AU - Jordán, A.
AU - Zhou, G.
AU - Mancini, L.
AU - Brahm, R.
AU - Ciceri, S.
AU - Bhatti, W.
AU - Csubry, Z.
AU - Rabus, M.
AU - Penev, K.
AU - Bento, J.
AU - Val-Borro, M. De
AU - Henning, T.
AU - Schmidt, B.
AU - Suc, V.
AU - Wright, D. J.
AU - Tinney, C. G.
AU - Tan, T. G.
AU - Noyes, R.
N1 - Publisher Copyright:
© 2016. The American Astronomical Society. All rights reserved..
PY - 2016/10
Y1 - 2016/10
N2 - We report six new inflated hot Jupiters (HATS-25b through HATS-30b) discovered using the HATSouth global network of automated telescopes. The planets orbit stars with V magnitudes in the range of ∼12-14 and have masses in the largely populated 0.5MJ-0.7MJ region of parameter space but span a wide variety of radii, from 1.17RJ to 1.75RJ. HATS-25b, HATS-28b, HATS-29b, and HATS-30b are typical inflated hot Jupiters (RP = 1.17-1.26RJ) orbiting G-type stars in short period (P = 3.2-4.6 days) orbits. However, HATS-26b (Rp = 1.75RJ, P = 3.3024 days) and HATS-27b (Rp = 1.50RJ, P = 4.6370 days) stand out as highly inflated planets orbiting slightly evolved F stars just after and in the turn-off points, respectively, which are among the least dense hot Jupiters, with densities of 0.153 and 0.180 , respectively. All the presented exoplanets but HATS-27b are good targets for future atmospheric characterization studies, while HATS-27b is a prime target for Rossiter - McLaughlin monitoring in order to determine its spin-orbit alignment given the brightness (V = 12.8) and stellar rotational velocity (v sin i ≈ 9.3 km s-1) of the host star. These discoveries significantly increase the number of inflated hot Jupiters known, contributing to our understanding of the mechanism(s) responsible for hot Jupiter inflation.
AB - We report six new inflated hot Jupiters (HATS-25b through HATS-30b) discovered using the HATSouth global network of automated telescopes. The planets orbit stars with V magnitudes in the range of ∼12-14 and have masses in the largely populated 0.5MJ-0.7MJ region of parameter space but span a wide variety of radii, from 1.17RJ to 1.75RJ. HATS-25b, HATS-28b, HATS-29b, and HATS-30b are typical inflated hot Jupiters (RP = 1.17-1.26RJ) orbiting G-type stars in short period (P = 3.2-4.6 days) orbits. However, HATS-26b (Rp = 1.75RJ, P = 3.3024 days) and HATS-27b (Rp = 1.50RJ, P = 4.6370 days) stand out as highly inflated planets orbiting slightly evolved F stars just after and in the turn-off points, respectively, which are among the least dense hot Jupiters, with densities of 0.153 and 0.180 , respectively. All the presented exoplanets but HATS-27b are good targets for future atmospheric characterization studies, while HATS-27b is a prime target for Rossiter - McLaughlin monitoring in order to determine its spin-orbit alignment given the brightness (V = 12.8) and stellar rotational velocity (v sin i ≈ 9.3 km s-1) of the host star. These discoveries significantly increase the number of inflated hot Jupiters known, contributing to our understanding of the mechanism(s) responsible for hot Jupiter inflation.
KW - stars: individual (HATS-25, HATS-26, HATS-27, HATS-28, HATS-29, HATS-30)
UR - http://www.scopus.com/inward/record.url?scp=84991734974&partnerID=8YFLogxK
U2 - 10.3847/0004-6256/152/4/108
DO - 10.3847/0004-6256/152/4/108
M3 - Article
AN - SCOPUS:84991734974
SN - 0004-6256
VL - 152
JO - Astronomical Journal
JF - Astronomical Journal
IS - 4
M1 - 108
ER -