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Keck/NIRC2 L'-Band ...
Keck/NIRC2 L'-Band Imaging of Jovian-Mass Accreting Protoplanets around PDS 70
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- Wang, Jason J. (author)
- California Institute of Technology, USA
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- Ginzburg, Sivan (author)
- University of California at Berkeley, USA
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- Ren, Bin (author)
- California Institute of Technology, USA
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- Wallack, Nicole (author)
- California Institute of Technology, USA
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- Gao, Peter (author)
- University of California at Berkeley, USA
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- Mawet, Dimitri (author)
- California Institute of Technology/Jet Propulsion Laboratory, USA
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- Bond, Charlotte Z. (author)
- University of Hawaii/W. M. Keck Observatory, USA
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- Cetre, Sylvain (author)
- W. M. Keck Observatory, USA
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- Wizinowich, Peter (author)
- W. M. Keck Observatory, USA
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- De Rosa, Robert J. (author)
- European Southern Observatory, Chile
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- Ruane, Garreth (author)
- Jet Propulsion Laboratory, USA
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- Liu, Michael C. (author)
- University of Hawaii, USA
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- Absil, Olivier (author)
- University of Liége, Belgium
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- Alvarez, Carlos (author)
- W. M. Keck Observatory, USA
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- Baranec, Christoph (author)
- University of Hawaii at Manoa, USA
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- Choquet, Élodie (author)
- Aix Marseille University, France
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- Chun, Mark (author)
- University of Hawaii at Manoa, USA
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- Defrère, Denis (author)
- University of Liége, Belgium
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- Delorme, Jacques-Robert (author)
- California Institute of Technology, USA
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- Duchêne, Gaspard (author)
- Université Grenoble-Alpes, France
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- Forsberg, Pontus, 1981- (author)
- Uppsala universitet,Tillämpad materialvetenskap
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- Ghez, Andrea (author)
- University of California Los Angeles, USA
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- Guyon, Olivier (author)
- Subaru Telescope/Steward Observatory/Astrobiology Center of NINS, Japan
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- Hall, Donald N. B. (author)
- University of Hawaii at Manoa, USA
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- Huby, Elsa (author)
- Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Univ. Paris Diderot, France
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- Jolivet, Aissa (author)
- University of Liège, Belgium
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- Jensen-Clem, Rebecca (author)
- University of California Santa Cruz, USA
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- Jovanovic, Nemanja (author)
- California Institute of Technology, USA
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- Karlsson, Mikael (author)
- Uppsala universitet,Tillämpad materialvetenskap
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- Lilley, Scott (author)
- W. M. Keck Observatory, USA
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- Matthews, Keith (author)
- California Institute of Technology, USA
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- Ménard, Francois (author)
- Université Grenoble-Alpes, France
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- Meshkat, Tiffany (author)
- California Institute of Technology, USA
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- Millar-Blanchaer, Maxwell (author)
- California Institute of Technology/Jet Propulsion Laboratory, USA
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- Ngo, Henry (author)
- NRC Herzberg Astronomy and Astrophysics, Canada
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- Orban de Xivry, Gilles (author)
- University of Liège, Belgium
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- Pinte, Chistophe (author)
- Monash University, Australia
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- Ragland, Sam (author)
- W. M. Keck Observatory, USA
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- Serabyn, Eugene (author)
- Jet Propulsion Laboratory, USA
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- Vargas Catalan, Ernesto, 1988- (author)
- Uppsala universitet,Tillämpad materialvetenskap
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- Wang, Ji (author)
- The Ohio State University, USA
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- Wetherell, Ed (author)
- W. M. Keck Observatory, USA
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- Williams, Jonathan P. (author)
- University of Hawaii, USA
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- Ygouf, Marie (author)
- NASA Exoplanet Science Institute, USA
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- Zuckerman, Ben (author)
- University of California Los Angeles, USA
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(creator_code:org_t)
- 2020-05-18
- 2020
- English.
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In: Astronomical Journal. - : American Astronomical Society. - 0004-6256 .- 1538-3881. ; 159:6
- Related links:
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https://iopscience.i...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
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- We present L'-band imaging of the PDS 70 planetary system with Keck/NIRC2 using the new infrared pyramid wave front sensor. We detected both PDS 70 b and c in our images, as well as the front rim of the circumstellar disk. After subtracting off a model of the disk, we measured the astrometry and photometry of both planets. Placing priors based on the dynamics of the system, we estimated PDS 70 b to have a semimajor axis of au and PDS 70 c to have a semimajor axis of au (95% credible interval). We fit the spectral energy distribution (SED) of both planets. For PDS 70 b, we were able to place better constraints on the red half of its SED than previous studies and inferred the radius of the photosphere to be 2–3 R Jup. The SED of PDS 70 c is less well constrained, with a range of total luminosities spanning an order of magnitude. With our inferred radii and luminosities, we used evolutionary models of accreting protoplanets to derive a mass of PDS 70 b between 2 and 4 M Jup and a mean mass accretion rate between 3 × 10−7 and 8 × 10−7 M Jup/yr. For PDS 70 c, we computed a mass between 1 and 3 M Jup and mean mass accretion rate between 1 × 10−7 and 5 × 10−7 M Jup/yr. The mass accretion rates imply dust accretion timescales short enough to hide strong molecular absorption features in both planets' SEDs.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Wang, Jason J.
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Ginzburg, Sivan
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Ren, Bin
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Wallack, Nicole
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Gao, Peter
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Mawet, Dimitri
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show more...
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Bond, Charlotte ...
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Cetre, Sylvain
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Wizinowich, Pete ...
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De Rosa, Robert ...
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Ruane, Garreth
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Liu, Michael C.
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Absil, Olivier
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Alvarez, Carlos
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Baranec, Christo ...
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Choquet, Élodie
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Chun, Mark
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Defrère, Denis
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Delorme, Jacques ...
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Duchêne, Gaspard
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Forsberg, Pontus ...
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Ghez, Andrea
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Guyon, Olivier
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Hall, Donald N. ...
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Huby, Elsa
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Jolivet, Aissa
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Jensen-Clem, Reb ...
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Jovanovic, Neman ...
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Karlsson, Mikael
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Lilley, Scott
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Matthews, Keith
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Ménard, Francois
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Meshkat, Tiffany
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Millar-Blanchaer ...
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Ngo, Henry
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Orban de Xivry, ...
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Pinte, Chistophe
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Ragland, Sam
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Serabyn, Eugene
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Vargas Catalan, ...
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Wang, Ji
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Wetherell, Ed
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Williams, Jonath ...
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Ygouf, Marie
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Zuckerman, Ben
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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Astronomical Jou ...
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Uppsala University