HIGH-CONTRAST NEAR-INFRARED IMAGING POLARIMETRY OF THE PROTOPLANETARY DISK AROUND RY TAU

被引：33

作者：

Takami, Michihiro ^{[1
]}

Karr, Jennifer L. ^{[1
]}

Hashimoto, Jun ^{[2
]}

Kim, Hyosun ^{[1
]}

Wisniewski, John ^{[3
]}

Henning, Thomas ^{[4
]}

Grady, Carol A. ^{[5
,6
]}

Kandori, Ryo ^{[2
]}

Hodapp, Klaus W. ^{[7
]}

Kudo, Tomoyuki ^{[8
]}

Kusakabe, Nobuhiko ^{[2
]}

Chou, Mei-Yin ^{[1
]}

Itoh, Yoichi ^{[9
]}

Momose, Munetake ^{[10
]}

Mayama, Satoshi ^{[11
]}

Currie, Thayne ^{[6
,12
]}

Follette, Katherine B. ^{[13
]}

Kwon, Jungmi ^{[2
,14
]}

Abe, Lyu ^{[15
]}

Brandner, Wolfgang ^{[4
]}

Brandt, Timothy D. ^{[16
]}

Carson, Joseph ^{[17
]}

Egner, Sebastian E. ^{[8
]}

Feldt, Markus ^{[4
]}

Guyon, Olivier ^{[8
]}

Hayano, Yutaka ^{[8
]}

Hayashi, Masahiko ^{[2
]}

Hayashi, Saeko ^{[8
]}

Ishii, Miki ^{[8
]}

Iye, Masanori ^{[2
]}

Janson, Markus ^{[16
]}

Knapp, Gillian R. ^{[16
]}

Kuzuhara, Masayuki ^{[8
,18
]}

McElwain, Michael W. ^{[6
]}

Matsuo, Taro ^{[19
]}

Miyama, Shoken ^{[2
]}

Morino, Jun-Ichi ^{[2
]}

Moro-Martin, Amaya ^{[20
]}

Nishimura, Tetsuo ^{[8
]}

Pyo, Tae-Soo ^{[8
]}

Serabyn, Eugene ^{[21
]}

Suto, Hiroshi ^{[2
]}

Suzuki, Ryuji ^{[2
]}

Takato, Naruhisa ^{[8
]}

Terada, Hiroshi ^{[8
]}

Thalmann, Christian ^{[22
]}

Tomono, Daigo ^{[8
]}

Turner, Edwin L. ^{[16
,23
]}

Watanabe, Makoto ^{[24
]}

Yamada, Toru ^{[25
]}

机构：

[1] Acad Sinica, Inst Astron & Astrophys, Taipei 10617, Taiwan

[2] Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan

[3] Univ Oklahoma, HL Dodge Dept Phys & Astron, Norman, OK 73019 USA

[4] Max Planck Inst Astron, D-69117 Heidelberg, Germany

[5] Eureka Sci, Oakland, CA 96002 USA

[6] NASA, Goddard Space Flight Ctr, ExoPlanets & Stellar Astrophys Lab, Greenbelt, MD 20771 USA

[7] Univ Hawaii, Inst Astron, Hilo, HI 96720 USA

[8] Natl Inst Nat Sci, Natl Astron Observ Japan, Subaru Telescope, Hilo, HI 96720 USA

[9] Univ Hyogo, Ctr Astron, Nishi Harima Astron Observ, Sayo, Hyogo 6795313, Japan

[10] Ibaraki Univ, Coll Sci, Mito, Ibaraki 3108512, Japan

[11] Grad Univ Adv Studies SOKENDAI, Ctr Promot Integrated Sci, Hayama, Kanagawa 2400193, Japan

[12] Univ Toronto, Dept Astron & Astrophys, Toronto, ON, Canada

[13] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA

[14] Grad Univ Adv Studies SOKENDAI, Dept Astron Sci, Mitaka, Tokyo 1818588, Japan

[15] Univ Nice Sophia Antipolis, CNRS, Observ Cote Azur, Lab Lagrange,UMR 7293, F-06108 Nice 2, France

[16] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA

[17] Coll Charleston, Dept Phys & Astron, Charleston, SC 29424 USA

[18] Univ Tokyo, Dept Earth & Planetary Sci, Bunkyo Ku, Tokyo 1130033, Japan

[19] Kyoto Univ, Dept Astron, Sakyo Ku, Kyoto 6068502, Japan

[20] CAB CSIC INTA, Dept Astrophys, E-28850 Madrid, Spain

[21] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[22] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1090 GE Amsterdam, Netherlands

[23] Univ Tokyo, Kavli Inst Phys & Math Universe, Kashiwa, Chiba 2778568, Japan

[24] Hokkaido Univ, Dept Cosmosci, Kita Ku, Sapporo, Hokkaido 0600810, Japan

[25] Tohoku Univ, Astron Inst, Aoba Ku, Sendai, Miyagi 9808578, Japan

来源：

ASTROPHYSICAL JOURNAL | 2013年 / 772卷 / 02期

基金：

美国国家科学基金会;

关键词：

polarization; protoplanetary disks; stars: individual (RY Tau); stars: pre-main sequence; SPECTRAL ENERGY-DISTRIBUTIONS; YOUNG STELLAR OBJECTS; 2-DIMENSIONAL RADIATIVE-TRANSFER; CIRCUMSTELLAR DISK; SCATTERED-LIGHT; PROTOSTELLAR ENVELOPES; OPTICAL-PROPERTIES; TRANSITIONAL DISK; PLANET FORMATION; ACCRETION DISKS;

D O I：

10.1088/0004-637X/772/2/145

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present near-infrared coronagraphic imaging polarimetry of RY Tau. The scattered light in the circumstellar environment was imaged at the H band at a high resolution (similar to 0 ''.05) for the first time, using Subaru/HiCIAO. The observed polarized intensity (PI) distribution shows a butterfly-like distribution of bright emission with an angular scale similar to the disk observed at millimeter wavelengths. This distribution is offset toward the blueshifted jet, indicating the presence of a geometrically thick disk or a remnant envelope, and therefore the earliest stage of the Class II evolutionary phase. We perform comparisons between the observed PI distribution and disk models with (1) full radiative transfer code, using the spectral energy distribution (SED) to constrain the disk parameters; and (2) monochromatic simulations of scattered light which explore a wide range of parameters space to constrain the disk and dust parameters. We show that these models cannot consistently explain the observed PI distribution, SED, and the viewing angle inferred by millimeter interferometry. We suggest that the scattered light in the near-infrared is associated with an optically thin and geometrically thick layer above the disk surface, with the surface responsible for the infrared SED. Half of the scattered light and thermal radiation in this layer illuminates the disk surface, and this process may significantly affect the thermal structure of the disk.

引用

页数：17

共 81 条

[1] [O I] sub-arcsecond study of a microjet from an intermediate mass young star: RY Tauri [J].