A Connection between Submillimeter Continuum Flux and Separation in Young Binaries

Abstract

We have made sensitive 800-micron continuum observations of low-mass, pre-main sequence (PMS) binary stars with projected separations less than 25 AU in Taurus-Auriga to study disks in the young binary environment. We did not detect any of the observed binaries, with typical 3-sigma upper limits of about 30 mJy. Combining our observations with previous 1300-micron observations of PMS Taurus binaries by Beckwith et al. (1990) and others, we find that the submillimeter fluxes from binaries with projected separations between 1 AU and 50 AU are significantly lower than fluxes from binaries with projected separations > 50 AU. The submillimeter fluxes from the wider binaries are consistent with those of PMS single stars. This may indicate lower disk surface densities and masses in the close binaries. Alternatively, dynamical clearing of gaps by close binaries is marginally sufficient to lower their submillimeter fluxes to the observed levels, even without reduction of surface densities elsewhere in the disks.

12 pages, uuencoded compressed postscript with figures; Wisconsin Astrophysics 526; to appear in ApJ Letters

Cited by in corpus (44)

• Protoplanetary Disks and Their Evolution
• The Disk Substructures at High Angular Resolution Project (DSHARP): I. Motivation, Sample, Calibration, and Overview
• Circumstellar Dust Disks in Taurus-Auriga: The Submillimeter Perspective
• The Mass Dependence Between Protoplanetary Disks and their Stellar Hosts
• Resolved Images of Large Cavities in Protoplanetary Transition Disks
• Unveiling the Circumstellar Envelope and Disk: A Sub-Arcsecond Survey of Circumstellar Structures
• Observations of Protoplanetary Disk Structures
• Debris disks in main sequence binary systems
• On the diversity and statistical properties of protostellar discs
• A Millimeter Continuum Size-Luminosity Relationship for Protoplanetary Disks
• Exploring brown dwarf disks: A 1.3 mm survey in Taurus
• A Resolved Census of Millimeter Emission from Taurus Multiple Star Systems
• A High Angular Resolution Multiplicity Survey of the Open Clusters alpha Persei and Praesepe
• Scaling Relations Associated with Millimeter Continuum Sizes in Protoplanetary Disks
• On the Transitional Disk Class: Linking Observations of T Tauri Stars & Physical Disk Models
• The Transitional Protoplanetary Disk Frequency as a Function of Age: Disk Evolution in the Coronet Cluster, Taurus, and Other 1--8 Myr-old Regions
• Protoplanetary Disks in $\rho$ Ophiuchus as Seen From ALMA
• Truncated Disks in TW Hya Association Multiple Star Systems
• Observations of Solids in Protoplanetary Disks
• Periodic accretion from a circumbinary disk in the young binary UZ Tau E
• Demographics of Transition Discs in Ophiuchus and Taurus
• On the Likelihood of Planet Formation in Close Binaries
• A circumstellar dust disk around T Tau N: Sub-arcsecond imaging at 3 mm
• Protoplanetary Disk Masses from Radiative Transfer Modeling: A Case Study in Taurus
• Protoplanetary disk evolution and stellar parameters of T Tauri binaries in Chamaeleon I
• Submillimeter Array Observations of Disks in the SR 24 Multiple Star System
• On dust evolution in planet-forming discs in binary systems. I -- Theoretical and numerical modelling: radial drift is faster in binary discs
• Mid-infrared imaging of the young binary star Hen 3-600: Evidence for a dust disk around the primary
• Resolved Imaging of the HD191089 Debris Disc
• The Effect of Binarity on Circumstellar Disk Evolution
• Binary Star Formation and the Outflows from their Discs
• X-ray and optical bursts and flares in YSOs: results from a 5-day XMM-Newton monitoring campaign of L1551
• An ALMA Survey of faint disks in the Chamaeleon I star-forming region: Why are some Class II disks so faint?
• The role of turbulence during the formation of circumbinary discs
• Constraining the orbit of the planet-hosting binary $\tau$ Boötis: Clues about planetary formation and migration
• Submillimeter Observations of the Young Low-Mass Object IRAS 04158+2805
• A sub-AU outwardly truncated accretion disk around a classical T Tauri star
• Polarimetric variations of binary stars. IV. Pre-main-sequence spectroscopic binaries located in Taurus, Auriga, and Orion
• Spitzer Spectroscopy of the Circumprimary Disk in the Binary Brown Dwarf 2MASS J04414489+2301513
• V819 Tau: A Rare Weak-Lined T Tauri Star with a Weak Infrared Excess
• A Sub-millimeterwave ``Flare'' from GG Tau?
• Zero Age Planetary Orbit of Gas Giant Planets Revisited: Reinforcement of the Link with Stellar Metallicity
• Evolution of Gas and Dust in Circumstellar Disks
• Planet formation in intermediate-separation binary systems