51 citations · 161 across the 6 of their papers we have counts for
8 papers
Keck/OSIRIS Pa high-contrast imaging and updated constraints on PDS~70b
Taichi Uyama, Chen Xie, Yuhiko Aoyama +11
We present a high-contrast imaging search for Pa line emission from protoplanets in the PDS~70 system with Keck/OSIRIS integral field spectroscopy. We applied the high-resolutio…
Comparison of planetary Hα-emission models: A new correlation with accretion luminosity
Yuhiko Aoyama, Gabriel-Dominique Marleau, Masahiro Ikoma +1
Accreting planets have been detected through their hydrogen-line emission, specifically H. To interpret this, stellar-regime empirical correlations between the H luminosity $…
A faint companion around CrA-9: protoplanet or obscured binary?
V. Christiaens, M. -G. Ubeira-Gabellini, H. Cánovas +16
Understanding how giant planets form requires observational input from directly imaged protoplanets. We used VLT/NACO and VLT/SPHERE to search for companions in the transition disc…
Spectral appearance of the planetary-surface accretion shock: Global spectra and hydrogen-line profiles and fluxes
Yuhiko Aoyama, Gabriel-Dominique Marleau, Christoph Mordasini +1
Hydrogen-line emission from an accretion shock has recently been observed at planetary-mass objects. Our previous work predicted the shock spectrum and luminosity for a shock on th…
Strong H emission and signs of accretion in a circumbinary planetary mass companion from MUSE
Simon C. Eriksson, Rubén Asensio Torres, Markus Janson +4
Context. Intrinsic H emission can be advantageously used to detect substellar companions because it improves contrasts in direct imaging. Characterising this emission from accre…
Accretion Properties of PDS 70b with MUSE
Jun Hashimoto, Yuhiko Aoyama, Mihoko Konishi +4
We report a new evaluation of the accretion properties of PDS~70b obtained with VLT/MUSE. The main difference from previous studies in Haffert et al. (2019) and Aoyama & Ikoma (201…