Exoplanets and Stellar Physics

Research group

Research theme

Sub department

About

Related research groups

K2-155: A Bright Metal-poor M Dwarf with Three Transiting Super-Earths

The Astronomical Journal American Astronomical Society 155:3 (2018) 124

Authors:

Teruyuki Hirano, Fei Dai, John H Livingston, Yuka Fujii, William D Cochran, Michael Endl, Davide Gandolfi, Seth Redfield, Joshua N Winn, Eike W Guenther, Jorge Prieto-Arranz, Simon Albrecht, Oscar Barragan, Juan Cabrera, P Wilson Cauley, Szilard Csizmadia, Hans Deeg, Philipp Eigmüller, Anders Erikson, Malcolm Fridlund, Akihiko Fukui, Sascha Grziwa, Artie P Hatzes, Judith Korth, Norio Narita, David Nespral, Prajwal Niraula, Grzegorz Nowak, Martin Pätzold, Enric Palle, Carina M Persson, Heike Rauer, Ignasi Ribas, Alexis MS Smith, Vincent Van Eylen
More details from the publisher

Three Small Planets Transiting a Hyades Star

The Astronomical Journal American Astronomical Society 155:3 (2018) 115

Authors:

John H Livingston, Fei Dai, Teruyuki Hirano, Davide Gandolfi, Grzegorz Nowak, Michael Endl, Sergio Velasco, Akihiko Fukui, Norio Narita, Jorge Prieto-Arranz, Oscar Barragan, Felice Cusano, Simon Albrecht, Juan Cabrera, William D Cochran, Szilard Csizmadia, Hans J Deeg, Philipp Eigmüller, Anders Erikson, Malcolm Fridlund, Sascha Grziwa, Eike W Guenther, Artie P Hatzes, Kiyoe Kawauchi, Judith Korth, David Nespral, Enric Palle, Martin Pätzold, Carina M Persson, Heike Rauer, Alexis MS Smith, Motohide Tamura, Yusuke Tanaka, Vincent Van Eylen, Noriharu Watanabe, Joshua N Winn
More details from the publisher

Low-mass eclipsing binaries in the WFCAM Transit Survey: the persistence of the M-dwarf radius inflation problem

(2018)

Authors:

Patricia Cruz, Marcos Diaz, Jayne Birkby, David Barrado, Brigitta Sipöcz, Simon Hodgkin
More details from the publisher

The K2 M67 Study: A Curiously Young Star in an Eclipsing Binary in an Old Open Cluster

(2018)

Authors:

Eric L Sandquist, Robert D Mathieu, Samuel N Quinn, Maxwell L Pollack, David W Latham, Timothy M Brown, Rebecca Esselstein, Suzanne Aigrain, Hannu Parviainen, Andrew Vanderburg, Dennis Stello, Garrett Somers, Marc H Pinsonneault, Jamie Tayar, Jerome A Orosz, Luigi R Bedin, Mattia Libralato, Luca Malavolta, Domenico Nardiello
More details from the publisher

Simulating the detection and classification of high-redshift supernovae with HARMONI on the ELT

Monthly Notices of the Royal Astronomical Society Oxford University Press 478:3 (2018) 3189-3198

Authors:

S Bounissou, Niranjan Thatte, S Zieleniewski, RCW Houghton, M Tecza, I Hook, B Neichel, T Fusco

Abstract:

We present detailed simulations of integral field spectroscopic observations of a supernova in a host galaxy at z ∼ 3, as observed by the HARMONI spectrograph on the Extremely Large Telescope, asssisted by laser tomographic adaptive optics. The goal of the simulations, using the HSIM simulation tool, is to determine whether HARMONI can discern the supernova Type from spectral features in the supernova spectrum. We find that in a 3 hour observation, covering the near-infrared H and K bands, at a spectral resolving power of ∼3000, and using the 20×20 mas spaxel scale, we can classify supernova Type Ia and their redshift robustly up to 80 days past maximum light (20 days in the supernova rest frame). We show that HARMONI will provide spectra at z ∼ 3 that are of comparable (or better) quality to the best spectra we can currently obtain at z ∼ 1, thus allowing studies of cosmic expansion rates to be pushed to substantially higher redshifts.
More details from the publisher
Details from ORA
More details