Infrared study of transitional disks in Ophiuchus with Herschel

Abstract

Context. Observations of nearby star-forming regions with the Herschel Space Observatory complement our view of the protoplanetary disks in Ophiuchus with information about the outer disks. Aims. The main goal of this project is to provide new far-infrared fluxes for the known disks in the core region of Ophiuchus and to identify potential transitional disks using data from Herschel. Methods. We obtained PACS and SPIRE photometry of previously spectroscopically confirmed young stellar objects (YSO) in the region and analysed their spectral energy distributions. Results. From an initial sample of 261 objects with spectral types in Ophiuchus, we detect 49 disks in at least one Herschel band. We provide new far-infrared fluxes for these objects. One of them is clearly a new transitional disk candidate. Conclusions. The data from Herschel Space Observatory provides fluxes that complement previous infrared data and that we use to identify a new transitional disk candidate.

21 pages, with 5 figures. Accepted in Astronomy & Astrophysics

References in corpus (4)

• First Results from High Angular Resolution ALMA Observations Toward the HL Tau Region
• Protoplanetary Disk Structures in Ophiuchus
• Identification of new transitional disk candidates in Lupus with Herschel
• Hyper: Hybrid Photometry and Extraction Routine

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• The Ophiuchus DIsc Survey Employing ALMA (ODISEA)-III: the evolution of substructures in massive discs at 3-5 au resolution
• A New Look at T Tauri Star Forbidden Lines: MHD Driven Winds from the Inner Disk
• The many-faceted light curves of young disk-bearing stars in Upper Sco and $\rho$ Oph observed by $K2$ Campaign 2
• Protoplanetary Disks in $\rho$ Ophiuchus as Seen From ALMA
• Identification of Young Stellar Object candidates in the $Gaia$ DR2 x AllWISE catalogue with machine learning methods
• The (w)hole survey: an unbiased sample study of transition disk candidates based on Spitzer catalogs
• Dippers and Dusty Disks Edges: A Unified Model
• A continuum of accretion burst behavior in young stars observed by K2
• Far-infrared to millimeter data of protoplanetary disks: dust growth in the Taurus, Ophiuchus, and Chamaeleon I star-forming regions
• Transition disks: the observational revolution from SEDs to imaging
• On the underestimation of dust mass in protoplanetary disks: Effects of disk structure and dust properties
• The Frequency Of Binary Star Interlopers Amongst Transitional Discs
• What happened before? -- The disks around the precursors of young Herbig Ae/Be stars
• Herschel Observations of Protoplanetary Disks in Lynds 1641
• Simplified models of circumstellar morphologies for interpreting high-resolution data. Analytical approach to the equatorial density enhancement
• Lyman-alpha Scattering Models Trace Accretion and Outflow Kinematics in T Tauri Systems
• Probabilistic Classification of Infrared-selected targets for SPHEREx mission: In search of YSOs
• Fundamental properties of protoplanetary discs determined from simultaneous fits to thermal dust images and spectral energy distributions