Mid-infrared multi-wavelength imaging of Ophiuchus IRS 48 transitional disk

Mitsuhiko Honda; Kazushi Okada; Takashi Miyata; Gijs D. Mulders; Jeremy R. Swearingen; Takashi Kamizuka; Ryou Ohsawa; Takuya Fujiyoshi; Hideaki Fujiwara; Mizuho Uchiyama; Takuya Yamashita; Takashi Onaka

doi:10.1093/pasj/psy033

Mid-infrared multi-wavelength imaging of Ophiuchus IRS 48 transitional disk

Mitsuhiko Honda, Kazushi Okada, Takashi Miyata, Gijs D. Mulders, Jeremy R. Swearingen, Takashi Kamizuka, Ryou Ohsawa, Takuya Fujiyoshi, Hideaki Fujiwara, Mizuho Uchiyama, Takuya Yamashita, Takashi Onaka

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3 Scopus citations

Abstract

Transitional disks around the Herbig Ae/Be stars are fascinating targets in the contexts of disk evolution and planet formation. Oph IRS 48 is one of such Herbig Ae stars, which shows an inner dust cavity and azimuthally lopsided large dust distribution. We present new images of Oph IRS 48 at eight mid-infrared (MIR) wavelengths from 8.59 to 24.6 μm taken with COMICS mounted on the 8.2 m Subaru Telescope. The N-band (7 to 13 μm) images show that the flux distribution is centrally peaked with a slight spatial extent, while the Q-band (17 to 25 μm) images show asymmetric double peaks (east and west). Using 18.8- and 24.6 μm images, we derived the dust temperature at both east and west peaks to be 135 ± 22 K. Thus, the asymmetry may not be attributed to a difference in the temperature. Comparing our results with previous modeling works, we conclude that the inner disk is aligned to the outer disk. A shadow cast by the optically thick inner disk has a great influence on the morphology of MIR thermal emission from the outer disk.

Original language	English
Article number	44
Journal	Publications of the Astronomical Society of Japan
Volume	70
Issue number	3
DOIs	https://doi.org/10.1093/pasj/psy033
State	Published - 1 Jun 2018
Externally published	Yes

Keywords

planet-disk interactions
protoplanetary disks
stars: individual (Oph IRS 48)

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10.1093/pasj/psy033

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@article{67f1935593eb4e88b07279b34bbae92e,

title = "Mid-infrared multi-wavelength imaging of Ophiuchus IRS 48 transitional disk",

abstract = "Transitional disks around the Herbig Ae/Be stars are fascinating targets in the contexts of disk evolution and planet formation. Oph IRS 48 is one of such Herbig Ae stars, which shows an inner dust cavity and azimuthally lopsided large dust distribution. We present new images of Oph IRS 48 at eight mid-infrared (MIR) wavelengths from 8.59 to 24.6 μm taken with COMICS mounted on the 8.2 m Subaru Telescope. The N-band (7 to 13 μm) images show that the flux distribution is centrally peaked with a slight spatial extent, while the Q-band (17 to 25 μm) images show asymmetric double peaks (east and west). Using 18.8- and 24.6 μm images, we derived the dust temperature at both east and west peaks to be 135 ± 22 K. Thus, the asymmetry may not be attributed to a difference in the temperature. Comparing our results with previous modeling works, we conclude that the inner disk is aligned to the outer disk. A shadow cast by the optically thick inner disk has a great influence on the morphology of MIR thermal emission from the outer disk.",

keywords = "planet-disk interactions, protoplanetary disks, stars: individual (Oph IRS 48)",

author = "Mitsuhiko Honda and Kazushi Okada and Takashi Miyata and Mulders, {Gijs D.} and Swearingen, {Jeremy R.} and Takashi Kamizuka and Ryou Ohsawa and Takuya Fujiyoshi and Hideaki Fujiwara and Mizuho Uchiyama and Takuya Yamashita and Takashi Onaka",

note = "Funding Information: We are grateful to all the staff members of the Subaru Telescope. We also thank the referee, Dr. Nienke van der Marel, for her useful comments. MH was supported by JSPS/MEXT KAK-ENHI Grant Number 15H05439. This study was supported by the Grant of Joint Development Research supported by the Research Coordination Committee in National Astronomical Observatory of Japan (NAOJ), the Grant for research and development of TMT instruments from NAOJ, and the grant from the Ishibashi Foundation for the Promotion of Science. Publisher Copyright: {\textcopyright} 2018 The Author(s).",

year = "2018",

month = jun,

day = "1",

doi = "10.1093/pasj/psy033",

language = "English",

volume = "70",

journal = "Publications of the Astronomical Society of Japan",

issn = "0004-6264",

publisher = "Oxford University Press",

number = "3",

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TY - JOUR

T1 - Mid-infrared multi-wavelength imaging of Ophiuchus IRS 48 transitional disk

AU - Honda, Mitsuhiko

AU - Okada, Kazushi

AU - Miyata, Takashi

AU - Mulders, Gijs D.

AU - Swearingen, Jeremy R.

AU - Kamizuka, Takashi

AU - Ohsawa, Ryou

AU - Fujiyoshi, Takuya

AU - Fujiwara, Hideaki

AU - Uchiyama, Mizuho

AU - Yamashita, Takuya

AU - Onaka, Takashi

N1 - Funding Information: We are grateful to all the staff members of the Subaru Telescope. We also thank the referee, Dr. Nienke van der Marel, for her useful comments. MH was supported by JSPS/MEXT KAK-ENHI Grant Number 15H05439. This study was supported by the Grant of Joint Development Research supported by the Research Coordination Committee in National Astronomical Observatory of Japan (NAOJ), the Grant for research and development of TMT instruments from NAOJ, and the grant from the Ishibashi Foundation for the Promotion of Science. Publisher Copyright: © 2018 The Author(s).

PY - 2018/6/1

Y1 - 2018/6/1

N2 - Transitional disks around the Herbig Ae/Be stars are fascinating targets in the contexts of disk evolution and planet formation. Oph IRS 48 is one of such Herbig Ae stars, which shows an inner dust cavity and azimuthally lopsided large dust distribution. We present new images of Oph IRS 48 at eight mid-infrared (MIR) wavelengths from 8.59 to 24.6 μm taken with COMICS mounted on the 8.2 m Subaru Telescope. The N-band (7 to 13 μm) images show that the flux distribution is centrally peaked with a slight spatial extent, while the Q-band (17 to 25 μm) images show asymmetric double peaks (east and west). Using 18.8- and 24.6 μm images, we derived the dust temperature at both east and west peaks to be 135 ± 22 K. Thus, the asymmetry may not be attributed to a difference in the temperature. Comparing our results with previous modeling works, we conclude that the inner disk is aligned to the outer disk. A shadow cast by the optically thick inner disk has a great influence on the morphology of MIR thermal emission from the outer disk.

AB - Transitional disks around the Herbig Ae/Be stars are fascinating targets in the contexts of disk evolution and planet formation. Oph IRS 48 is one of such Herbig Ae stars, which shows an inner dust cavity and azimuthally lopsided large dust distribution. We present new images of Oph IRS 48 at eight mid-infrared (MIR) wavelengths from 8.59 to 24.6 μm taken with COMICS mounted on the 8.2 m Subaru Telescope. The N-band (7 to 13 μm) images show that the flux distribution is centrally peaked with a slight spatial extent, while the Q-band (17 to 25 μm) images show asymmetric double peaks (east and west). Using 18.8- and 24.6 μm images, we derived the dust temperature at both east and west peaks to be 135 ± 22 K. Thus, the asymmetry may not be attributed to a difference in the temperature. Comparing our results with previous modeling works, we conclude that the inner disk is aligned to the outer disk. A shadow cast by the optically thick inner disk has a great influence on the morphology of MIR thermal emission from the outer disk.

KW - planet-disk interactions

KW - protoplanetary disks

KW - stars: individual (Oph IRS 48)

UR - http://www.scopus.com/inward/record.url?scp=85051087644&partnerID=8YFLogxK

U2 - 10.1093/pasj/psy033

DO - 10.1093/pasj/psy033

M3 - Article

AN - SCOPUS:85051087644

SN - 0004-6264

VL - 70

JO - Publications of the Astronomical Society of Japan

JF - Publications of the Astronomical Society of Japan

IS - 3

M1 - 44

ER -

Mid-infrared multi-wavelength imaging of Ophiuchus IRS 48 transitional disk

Abstract

Keywords

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