SEEDS Adaptive Optics Imaging of the Asymmetric Transition Disk Oph IRS 48 in Scattered Light
SEEDS Adaptive Optics Imaging of the Asymmetric Transition Disk Oph IRS 48 in Scattered Light
We present the first resolved near infrared imagery of the transition disk Oph IRS 48 (WLY 2-48), which was recently observed with ALMA to have a strongly asymmetric sub-millimeter flux distribution. H-band polarized intensity images show a $\sim$60AU radius scattered light cavity with two pronounced arcs of emission, one from Northeast to Southeast and one smaller, fainter and more distant arc in the Northwest. K-band scattered light imagery reveals a similar morphology, but with a clear third arc along the Southwestern rim of the disk cavity. This arc meets the Northwestern arc at nearly a right angle, revealing the presence of a spiral arm or local surface brightness deficit in the disk, and explaining the East-West brightness asymmetry in the H-band data. We also present 0.8-5.4$\mu$m IRTF SpeX spectra of this object, which allow us to constrain the spectral class to A0$\pm$1 and measure a low mass accretion rate of 10$^{-8.5}$M$_{\odot}$/yr, both consistent with previous estimates. We investigate a variety of reddening laws in order to fit the mutliwavelength SED of Oph IRS 48 and find a best fit consistent with a younger, higher luminosity star than previous estimates.
Thomas Henning、Saeko Hayashi、Michael W. McElwain、Ray W. Russell、Eugene Serabyn、Eiji Akiyama、Carol A. Grady、Toru Yamada、Tetsuo Nishimura、Michiel Min、Jun-Ichi Morino、Nienke van der Marel、Shoken Miyama、Tomonori Usuda、Koen Maaskant、Hiroshi Terada、Michael L. Sitko、Wolfgang Brandner、Marc J. Kuchner、Satoshi Mayama、Jeremy R. Swearingen、Markus Feldt、Taro Matsuo、Masahiko Hayashi、John P. Wisniewski、Klaus Hodapp、Miki Ishii、Sebastian E. Egner、Tae-Soo Pyo、Christian Thalmann、Motohide Tamura、Yutaka Hayano、Amaya Moro-Martin、Joseph Carson、Lyu Abe、Michihiro Takami、Masayuki Kuzuhara、Katherine B. Follette、Hideki Takami、Ryuji Suzuki、Laird M. Close、Timothy D. Brandt、Gillian R. Knapp、Takuya Suenaga、Miwa Goto、Misato Fukagawa、Takayuki Muto、Jun Hashimoto、Naruhisa Takato、Edwin L. Turner、Yasuhiro Takahashi、Olivier Guyon、Masanori Iye、Markus Janson、Daigo Tomono、Elizabeth H. Champney、Thayne Currie、Makoto Watanabe、Tomoyuki Kudo、Hiroshi Suto、Ryo Kandori、Nobuhiko Kusakabe、Jungmi Kwon
天文学
Thomas Henning,Saeko Hayashi,Michael W. McElwain,Ray W. Russell,Eugene Serabyn,Eiji Akiyama,Carol A. Grady,Toru Yamada,Tetsuo Nishimura,Michiel Min,Jun-Ichi Morino,Nienke van der Marel,Shoken Miyama,Tomonori Usuda,Koen Maaskant,Hiroshi Terada,Michael L. Sitko,Wolfgang Brandner,Marc J. Kuchner,Satoshi Mayama,Jeremy R. Swearingen,Markus Feldt,Taro Matsuo,Masahiko Hayashi,John P. Wisniewski,Klaus Hodapp,Miki Ishii,Sebastian E. Egner,Tae-Soo Pyo,Christian Thalmann,Motohide Tamura,Yutaka Hayano,Amaya Moro-Martin,Joseph Carson,Lyu Abe,Michihiro Takami,Masayuki Kuzuhara,Katherine B. Follette,Hideki Takami,Ryuji Suzuki,Laird M. Close,Timothy D. Brandt,Gillian R. Knapp,Takuya Suenaga,Miwa Goto,Misato Fukagawa,Takayuki Muto,Jun Hashimoto,Naruhisa Takato,Edwin L. Turner,Yasuhiro Takahashi,Olivier Guyon,Masanori Iye,Markus Janson,Daigo Tomono,Elizabeth H. Champney,Thayne Currie,Makoto Watanabe,Tomoyuki Kudo,Hiroshi Suto,Ryo Kandori,Nobuhiko Kusakabe,Jungmi Kwon.SEEDS Adaptive Optics Imaging of the Asymmetric Transition Disk Oph IRS 48 in Scattered Light[EB/OL].(2014-11-03)[2025-07-02].https://arxiv.org/abs/1411.0671.点此复制
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