Keck/OSIRIS Paβ High-contrast Imaging and Updated Constraints on PDS 70b

@article{Uyama2021KeckOSIRISPH,
  title={Keck/OSIRIS Pa$\beta$ High-contrast Imaging and Updated Constraints on PDS 70b},
  author={Taichi Uyama and Chen Xie and Yuhiko Aoyama and Charles A. Beichman and Jun Hashimoto and Ruobing Dong and Yasuhiro Hasegawa and Masahiro Ikoma and Dimitri Mawet and Michael W. McElwain and Jean-Baptiste Ruffio and Kevin R. Wagner and Jason J. Wang and Yifan Zhou},
  journal={The Astronomical Journal},
  year={2021},
  volume={162}
}
  • T. Uyama, Chen Xie, +11 authors Yifan Zhou
  • Published 14 September 2021
  • Physics
  • The Astronomical Journal
We present a high-contrast imaging search for Paβ line emission from protoplanets in the PDS 70 system with Keck/OSIRIS integral field spectroscopy. We applied the high-resolution spectral differential imaging technique to the OSIRIS J-band data but did not detect the Paβ line at the level predicted using the parameters of Hashimoto et al. (2020). This lack of Paβ emission suggests the MUSE-based study may have overestimated the line width of Hα. We compared our Paβ detection limits with the… 
Characterizing the Protolunar Disk of the Accreting Companion GQ Lupi B
GQ Lup B is a young and accreting, substellar companion that appears to drive a spiral arm in the circumstellar disk of its host star. We report high-contrast imaging observations of GQ Lup B with
Accreting protoplanets: Spectral signatures and magnitude of gas and dust extinction at H α
Context. Accreting planetary-mass objects have been detected at H α, but targeted searches have mainly resulted in non-detections. Accretion tracers in the planetary-mass regime could originate from

References

SHOWING 1-10 OF 32 REFERENCES
Characterization of the gaseous companion κ Andromedae b - New Keck and LBTI high-contrast observations
Context. We previously reported the direct detection of a low mass companion at a projected separation of 55 2 AU around the B9 type star Andromedae. The properties of the system (mass ratio,
Constraining PDS 70b’s Formation Mechanism with Multi-hydrogen-emission Observations
We present our Keck/OSIRIS observations of the Paβ emission line (1.282 μm) to investigate accretion mechanisms of PDS 70 planetary system. Our spectral differential imaging reduction to remove the
Constraining Planetary Gas Accretion Rate from Hα Line Width and Intensity: Case of PDS 70 b and c
Recent observations of protoplanets embedded in circumstellar disks have shed light on the planet formation process. In particular, detection of hydrogen Balmer-line (Hα) emission gives direct
Magellan Adaptive Optics Imaging of PDS 70: Measuring the Mass Accretion Rate of a Young Giant Planet within a Gapped Disk
PDS 70b is a recently discovered and directly imaged exoplanet within the wide (40 au) cavity around PDS 70. Ongoing accretion onto the central star suggests that accretion onto PDS 70b may also be
Molecular mapping of the PDS70 system
Context. Determining the chemical properties of the atmosphere of young forming gas giants might shed light on the location their formation occurred and the mechanisms involved. Aims. Our aim was to
Hubble Space Telescope UV and Hα Measurements of the Accretion Excess Emission from the Young Giant Planet PDS 70 b
Recent discoveries of young exoplanets within their natal disks offer exciting opportunities to study ongoing planet formation. In particular, a planet’s mass accretion rate can be constrained by
Detection and Characterization of Exoplanets and Disks using Projections on Karhunen-Loeve Eigenimages
We describe a new method to achieve point spread function (PSF) subtractions for high- contrast imaging using Principal Component Analysis (PCA) that is applicable to both point sources or extended
Characterizing and Improving the Data Reduction Pipeline for the Keck OSIRIS Integral Field Spectrograph
OSIRIS is a near-infrared (1.0--2.4 $\mu$m) integral field spectrograph operating behind the adaptive optics system at Keck Observatory, and is one of the first lenslet-based integral field
The Optical to Mid-infrared Extinction Law Based on the APOGEE, Gaia DR2, Pan-STARRS1, SDSS, APASS, 2MASS, and WISE Surveys
A precise interstellar dust extinction law is critically important to interpret observations. There are two indicators of extinction: the color excess ratio (CER) and the relative extinction.
Two accreting protoplanets around the young star PDS 70
Newly forming protoplanets are expected to create cavities and substructures in young, gas-rich protoplanetary disks1–3, but they are difficult to detect as they could be confused with disk features
...
1
2
3
4
...