| DOI | Resolve DOI: https://doi.org/10.3847/1538-3881/aa63e9 |
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| Author | Search for: Chilcote, Jeffrey; Search for: Pueyo, Laurent; Search for: De Rosa, Robert J.; Search for: Vargas, Jeffrey; Search for: Macintosh, Bruce; Search for: Bailey, Vanessa P.; Search for: Barman, Travis; Search for: Bauman, Brian; Search for: Bruzzone, Sebastian; Search for: Bulger, Joanna; Search for: Burrows, Adam S.; Search for: Cardwell, Andrew; Search for: Chen, Christine H.; Search for: Cotton, Tara; Search for: Dillon, Daren; Search for: Doyon, Rene; Search for: Draper, Zachary H.1; Search for: Duchêne, Gaspard; Search for: Dunn, Jennifer1; Search for: Erikson, Darren1; Search for: Fitzgerald, Michael P.; Search for: Follette, Katherine B.; Search for: Gavel, Donald; Search for: Goodsell, Stephen, J.; Search for: Graham, James R.; Search for: Greenbaum, Alexandra Z.; Search for: Hartung, Markus; Search for: Hibon, Pascale; Search for: Hung, Li-Wei; Search for: Ingraham, Patrick; Search for: Kalas, Paul; Search for: Konopacky, Quinn; Search for: Larkin, James E.; Search for: Maire, Jérôme; Search for: Marchis, Franck; Search for: Marley, Mark S.; Search for: Marois, Christian1; Search for: Metchev, Stanimir; Search for: Millar-Blanchaer, Maxwell A.; Search for: Morzinski, Katie M.; Search for: Nielsen, Eric L.; Search for: Norton, Andrew; Search for: Oppenheimer, Rebecca; Search for: Palmer, David; Search for: Patience, Jennifer; Search for: Perrin, Marshall; Search for: Poyneer, Lisa; Search for: Rajan, Abhijith; Search for: Rameau, Julien; Search for: Rantakyrö, Fredrik T.; Search for: Sadakuni, Naru; Search for: Saddlemyer, Leslie1; Search for: Savransky, Dmitry; Search for: Schneider, Adam C.; Search for: Serio, Andrew; Search for: Sivaramakrishnan, Anand; Search for: Song, Inseok; Search for: Soummer, Remi; Search for: Thomas, Sandrine; Search for: Wallace, J. Kent; Search for: Wang, Jason J.; Search for: Ward-Duong, Kimberly; Search for: Wiktorowicz, Sloane; Search for: Wolff, Schuyler |
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| Affiliation | - National Research Council of Canada. Herzberg Astronomy and Astrophysics
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| Format | Text, Article |
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| Abstract | Using the Gemini Planet Imager located at Gemini South, we measured the near-infrared (1.0–2.4 μm) spectrum of the planetary companion to the nearby, young star β Pictoris. We compare the spectrum obtained with currently published model grids and with known substellar objects and present the best matching models as well as the best matching observed objects. Comparing the empirical measurement of the bolometric luminosity to evolutionary models, we find a mass of 12.9 ± 0.2 MJup, an effective temperature of 1724 ± 15 K, a radius of 1.46 ± 0.01 RJup, and a surface gravity of logg=4.18\pm 0.01 [dex] (cgs). The stated uncertainties are statistical errors only, and do not incorporate any uncertainty on the evolutionary models. Using atmospheric models, we find an effective temperature of 1700–1800 K and a surface gravity of logg=3.5$–4.0 [dex] depending upon the model. These values agree well with other publications and with "hot-start" predictions from planetary evolution models. Further, we find that the spectrum of β Pic b best matches a low surface gravity L2 ± 1 brown dwarf. Finally, comparing the spectrum to field brown dwarfs, we find the the spectrum best matches 2MASS J04062677–381210 and 2MASS J03552337+1133437. |
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| Publication date | 2017-03-28 |
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| Publisher | American Astronomical Society |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 23002247 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 853a38d3-0f5a-4c41-b648-b1b48eed867b |
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| Record created | 2017-09-14 |
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| Record modified | 2020-03-16 |
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