A GMRT survey of regions towards the Taurus molecular cloud at 323 and 608 MHz

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Publication Date: 2016-07-28

Journal Title: Monthly Notices of the Royal Astronomical Society

Publisher: Oxford University Press

Volume: 462

Issue: 3

Pages: 2904-2917

Language: English

Type: Article

This Version: VoR

Citation: Ainsworth, R. E., Coughlan, C. P., Green, D. A., Scaife, A. M. M., & Ray, T. P. (2016). A GMRT survey of regions towards the Taurus molecular cloud at 323 and 608 MHz. Monthly Notices of the Royal Astronomical Society, 462 (3), 2904-2917. https://doi.org/10.1093/mnras/stw1847

Description: This is the final version of the article. It first appeared from Oxford University Press via http://dx.doi.org/10.1093/mnras/stw1847

Abstract: We present observations of three active sites of star formation in the Taurus molecular cloud complex taken at 323 and 608 MHz (90 and 50 cm, respectively) with the Giant Metrewave Radio Telescope (GMRT). Three pointings were observed as part of a pathfinder project, targeted at the young stellar objects (YSOs) L1551 IRS 5, T Tau and DG Tau (the results for these target sources were presented in a previous paper). In this paper, we search for other YSOs and present a survey comprising of all three fields; a by-product of the large instantaneous field of view of the GMRT. The resolution of the survey is of order 10 arcsec and the best rms noise at the centre of each pointing is of order 100 µJy beam$^{−1}$ at 323 MHz and 50 µJy beam$^{−1}$ at 608 MHz. We present a catalogue of 1815 and 687 field sources detected above 5$\sigma_{rms}$ at 323 and 608 MHz, respectively. A total of 440 sources were detected at both frequencies, corresponding to a total unique source count of 2062 sources. We compare the results with previous surveys and showcase a sample of extended extragalactic objects. Although no further YSOs were detected in addition to the target YSOs based on our source-finding criteria, these data can be useful for targeted manual searches, studies of radio galaxies or to assist in the calibration of future observations with the Low-Frequency Array towards these regions.

Keywords: catalogues, surveys, radio continuum: galaxies

Sponsorship: Science Foundation Ireland [Grant ID: 13/ERC/I2907], Science and Technology Facilities Council, European Research Council [Grant ID: ERC-2012-StG-307215 LODESTONE]

Embargo Lift Date: 2100-01-01

Identifiers:

External DOI: https://doi.org/10.1093/mnras/stw1847

This record's URL: https://www.repository.cam.ac.uk/handle/1810/260210

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Autor: Ainsworth, Rachael E.Coughlan, Colm P.Green, David A.Scaife, Anna M. M.Ray, Tom P.

Fuente: https://www.repository.cam.ac.uk/handle/1810/260210

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