AMI Large Array radio continuum observations of Spitzer c2d small clouds and cores

Abstract

We perform deep 1.8 cm radio continuum imaging towards thirteen protostellar regions selected from the Spitzer c2d small clouds and cores programme at high resolution (25") in order to detect and quantify the cm-wave emission from deeply embedded young protostars. Within these regions we detect fifteen compact radio sources which we identify as radio protostars including two probable new detections. The sample is in general of low bolometric luminosity and contains several of the newly detected VeLLO sources. We determine the 1.8 cm radio luminosity to bolometric luminosity correlation, L_rad -L_bol, for the sample and discuss the nature of the radio emission in terms of the available sources of ionized gas. We also investigate the L_rad-L_IR correlation and suggest that radio flux density may be used as a proxy for the internal luminosity of low luminosity protostars.

submitted MNRAS

References in corpus (13)

• MAMBO Mapping of Spitzer c2d Small Clouds and Cores
• Identifying the Low Luminosity Population of Embedded Protostars in the c2d Observations of Clouds and Cores
• Comparing Star Formation on Large Scales in the c2d Legacy Clouds: Bolocam 1.1 mm Dust Continuum Surveys of Serpens, Perseus, and Ophiuchus
• The Spitzer c2d Survey of Nearby Dense Cores: I: First Direct Detection of the Embedded Source in IRAM 04191+1522
• The Evolution of the Multiplicity of Embedded Protostars I: Sample Properties and Binary Detections
• Outflows from Massive YSOs as Seen with the Infrared Array Camera
• The Spitzer c2d Survey of Nearby Dense Cores. IX. Discovery of a Very Low Luminosity Object Driving a Molecular Outflow in the Dense Core L673-7
• The initial conditions of isolated star formation - VII. Spitzer mapping of pre-stellar cores
• The Detection and Characterization of cm Radio Continuum Emission from the Low-mass Protostar L1014-IRS
• AMI limits on 15 GHz excess emission in northern HII regions
• A Multiple System of Radio Sources at the Core of the L723 Multipolar Outflow
• A VLA search for young protostars embedded in dense cores
• The Spitzer c2d Survey of Nearby Dense Cores: VI. The Protostars of Lynds Dark Nebula 1221

Cited by in corpus (9)

• Radio Jets from Young Stellar Objects
• Confirmation of the VeLLO L1148-IRS: Star Formation at very low (Column) Density
• Radio sources in the Chandra Galactic Bulge survey
• The VLA Nascent Disk And Multiplicity Survey of Perseus Protostars (VANDAM). III. Extended Radio Emission from Protostars in Perseus
• AMI radio continuum observations of young stellar objects with known outflows
• Radio continuum observations of Class I protostellar disks in Taurus: constraining the greybody tail at centimetre wavelengths
• Radio Properties of Young Stellar Objects in the Core of the Serpens South Infrared Dark Cloud
• AMI-LA radio continuum observations of Spitzer c2d small clouds and cores: Serpens region
• CARMA Observations of Galactic Cold Cores: Searching for Spinning Dust Emission