J/MNRAS/410/2662 AMI 1.8cm observations in c2d small clouds (Scaife+, 2011)
AMI Large Array radio continuum observations of Spitzer c2d small clouds and
cores.
Scaife A.M.M., Curtis E.I., Davies M., Franzen T.M.O., Grainge K.J.B.,
Hobson M.P., Hurley-Walker N., Lasenby A.N., Olamaie M., Pooley G.G.,
Rodriguez-Gonzalvez C., Saunders R.D.E., Schammel M., Scott P.F.,
Shimwell T., Titterington D., Waldram E., Zwart J.T.L. (AMI Consortium)
<Mon. Not. R. Astron. Soc. 410, 2662 (2011)>
=2011MNRAS.410.2662S 2011MNRAS.410.2662S
ADC_Keywords: YSOs ; Radio sources ; Interstellar medium
Keywords: radiation mechanisms: general - stars: formation - ISM: clouds -
ISM: general
Abstract:
We perform deep 1.8-cm radio continuum imaging towards 13 protostellar
regions selected from the Spitzer c2d small clouds and cores programme
at high resolution (25-arcsec) in order to detect and quantify the
cm-wave emission from deeply embedded young protostars. Within these
regions we detect 15 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 1.8cm radio luminosity to
bolometric luminosity correlation, Lrad-Lbol, for the sample and
discuss the nature of the radio emission in terms of the available
sources of ionized gas. We also investigate the Lrad-LIR correlation
and suggest that radio flux density may be used as a proxy for the
internal luminosity of low-luminosity protostars.
Description:
Radio flux densities at a wavelength of 1.8cm for 46 sources within
small clouds and cores from the Spitzer c2d programme are presented.
These are interferometric observations with a resolution of
approximately 25-arcsec. All sources are detected at greater than
5σ unless otherwise noted.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 121 47 Sources detected within the AMI-LA fields
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See also:
J/AJ/133/1560 : Spitzer c2d small clouds and cores (Wu+, 2007)
J/A+A/487/993 : MAMBO Mapping of c2d Clouds and Cores (Kauffmann+, 2008)
J/ApJS/177/551 : Spitzer c2d survey of Lupus dark clouds (Merin+, 2008)
J/ApJS/181/321 : Properties of Spitzer c2d dark clouds (Evans+, 2009)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Field Field designation
12- 13 I2 --- ID Source identification number
15- 16 I2 h RAh Right Ascension J2000 (hours)
18- 19 I2 min RAm Right Ascension J2000 (minutes)
21- 24 F4.1 s RAs Right Ascension J2000 (seconds)
26 A1 --- DE- Declination J2000 (sign)
27- 28 I2 deg DEd Declination J2000 (degrees)
30- 31 I2 arcmin DEm Declination J2000 (minutes)
33- 36 F4.1 arcsec DEs Declination J2000 (seconds)
38- 42 F5.2 GHz Freq [16.07/16.43] Observing frequency
44- 49 F6.1 uJy Speak Peak flux density at Freq
51- 56 F6.1 uJy Sint Integrated flux density at Freq
58- 62 F5.1 uJy e_Sint ? Error on integrated flux density
64- 77 A14 --- Assoc Name of associated source
79-121 A43 --- Note Notes on sources
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Acknowledgements:
Anna Scaife, ascaife(at)cp.dias.ie
(End) Anna Scaife [DIAS, Ireland], Patricia Vannier [CDS] 25-Jan-2011