ItemArticle

A Novel Survey for Young Substellar Objects with the W-band Filter. VII. Water-bearing Objects in the Core of the ? Ophiuchi Cloud Complex

Title
A Novel Survey for Young Substellar Objects with the W-band Filter. VII. Water-bearing Objects in the Core of the ? Ophiuchi Cloud Complex
Creator
Sharma, Tanvi; Chen, Wen Ping; Biller, Beth; Albert, Lo; Damian, Belinda; Jose, Jessy; Lalchand, Bhavana; Liu, Michael C.; Oasa, Yumiko
Description
We present a study of very low mass stars and brown dwarfs in the rich star-forming core of the ? Ophiuchi cloud complex. The selection of the sample relies on detecting the inherent water absorption characteristic in young substellar objects. Of the 22 water-bearing candidates selected, 15 have a spectral type of M6 or later. Brown dwarf candidates too faint for membership determination by Gaia have their proper motions derived by deep-infrared images spanning 6 yr. Astrometric analysis confirms 21/22 sources as members, with one identified as a contaminant. Infrared colors and the spectral energy distribution of each water-bearing candidate are used to diagnose the mass, age, and possible existence of circumstellar dust. A total of 15 sources exhibit evidence of disks in their spectral energy distributions, as late as in M8-type objects. Spectroscopy for bright candidates has confirmed one as an M8 member and verified two sources (with disks) exhibiting signatures of magnetospheric accretion. 2025. The Author(s). Published by the American Astronomical Society.
Source
Astrophysical Journal;Volume;980;Issue;2;Article No.;205;
Date
01-01-2025
Publisher
Institute of Physics
Coverage
Sharma T., Institute of Astronomy, National Central University, 300 Zhongda Road Zhongli, Taoyuan, 32001, Taiwan; Chen W.P., Institute of Astronomy, National Central University, 300 Zhongda Road Zhongli, Taoyuan, 32001, Taiwan, Department of Physics, National Central University, 300 Zhongda Road Zhongli, Taoyuan, 32001, Taiwan; Biller B., Institute for Astronomy, Royal Observatory, University of Edinburgh, Blackford Hill, Edinburgh, EH93HJ, United Kingdom; Albert L., Institut Trottier de recherche sur les exoplanes, Universitde Montrl, Montrl, H3C 3J7, QC, Canada, Dartement de physique, Universitde Montrl, Montrl, H3C 3J7, QC, Canada; Damian B., SUPA, School of Physics Astronomy, University of St Andrews, North Haugh, St Andrews, KY16 9SS, United Kingdom, Department of Physics and Electronics, CHRIST (Deemed to be University, Hosur Road, Bengaluru, 560029, India; Jose J., Department of Physics, Indian Institute of Science Education and Research Tirupati, Yerpedu Andhra Pradesh, Tirupati, 517619, India; Lalchand B., Institute of Astronomy, National Central University, 300 Zhongda Road Zhongli, Taoyuan, 32001, Taiwan; Liu M.C., Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, 96822, HI, United States; Oasa Y., Faculty of Education, Graduate School of Science and Engineering, Saitama University, 255, Shimo-Okubo, Sakura, Saitama, 338-8570, Japan
Rights
All Open Access; Gold Open Access; Green Open Access
Relation
ISSN: 0004637X;
Format
online
Language
English
Type
Article

Citation

Sharma, Tanvi; Chen, Wen Ping; Biller, Beth; Albert, Lo; Damian, Belinda; Jose, Jessy; Lalchand, Bhavana; Liu, Michael C.; Oasa, Yumiko, “A Novel Survey for Young Substellar Objects with the W-band Filter. VII. Water-bearing Objects in the Core of the ? Ophiuchi Cloud Complex,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 19, 2026, https://archives.christuniversity.in/items/show/23584.

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