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J/A+A/612/A79 Barnard 30 dark cloud IR and submm data (Barrado+, 2018)
The following files can be converted to FITS (extension .fit or fit.gz)
table2.dat table3.dat table4.dat table5.dat table6.dat table7.dat
table8.dat list.dat
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-r--r--r-- 1 cats archive 28090 Aug 8 2018 ReadMe
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-r--r--r-- 1 cats archive 3220 Aug 7 2018 table2.dat [txt] [txt.gz] [fits] [fits.gz] [html]
-r--r--r-- 1 cats archive 32206 Dec 7 2017 table3.dat [txt] [txt.gz] [fits] [fits.gz] [html]
-r--r--r-- 1 cats archive 9380 Dec 7 2017 table4.dat [txt] [txt.gz] [fits] [fits.gz] [html]
-r--r--r-- 1 cats archive 7994 May 4 2018 table5.dat [txt] [txt.gz] [fits] [fits.gz] [html]
-r--r--r-- 1 cats archive 798 Dec 7 2017 table6.dat [txt] [txt.gz] [fits] [fits.gz] [html]
-r--r--r-- 1 cats archive 28889 Dec 7 2017 table7.dat [txt] [txt.gz] [fits] [fits.gz] [html]
-r--r--r-- 1 cats archive 3082 Aug 8 2018 table8.dat [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe :J/A+A/612/A79 Barnard 30 dark cloud IR and submm data (Barrado+, 2018)
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Early phases in the stellar and substellar formation and evolution.
Infrared and submillimeter data in the Barnard 30 dark cloud.
Barrado D., de Gregorio Monsalvo I., Huelamo N., Morales-Calderon M.,
Bayo A., Palau A., Ruiz M.T., Riviere-Marichalar P., Bouy H., Morata O.,
Stauffer J.R., Eiroa C., Noriega-Crespo A.
<Astron. Astrophys. 612, A79 (2018)>
=2018A&A...612A..79B (SIMBAD/NED BibCode)
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ADC_Keywords: Clusters, open ; Molecular clouds ; Photometry, infrared ;
Photometry, millimetric/submm ; Photometry, VRI
Keywords: binaries: close - brown dwarfs - stars: pre-main sequence -
stars: protostars -
open clusters and associations: individual: Barnard 30 dark cloud
Abstract:
The early evolutionary stage of brown dwarfs (BDs) is not very well
characterized, especially during the embedded phase. Our goal is to
gain insight into the dominant formation mechanism of very low-mass
objects and BDs.
We have conducted deep observations at 870um obtained with the
LABOCA bolometer at the APEX telescope in order to identify young
submillimeter (submm) sources in the Barnard 30 dark cloud. We have
complemented these data with multi-wavelength observations from the
optical to the far-IR and compiled complete spectral energy
distributions in order to identify the counterparts, characterize the
sources and to assess their membership to the association and stellar
or substellar status based on the available photometric information.
We have identified 34 submm sources and a substantial number of
possible and probable Barnard 30 members within each individual
APEX/LABOCA beam. They can be classified into three distinct groups.
First, 15 of these 34 have a clear optical or IR counterpart to the
submm peak and nine of them are potential proto-BD candidates.
Moreover, a substantial number of them could be multiple systems. A
second group of 13 sources comprises candidate members with
significant infrared excesses located away from the central submm
emission. All of them include BD candidates, some displaying IR
excess, but their association with submm emission is unclear. In
addition, we have found six starless cores and, based on the total
dust mass estimate, three might be pre-substellar (or pre-BDs) cores.
Finally, the complete characterization of our APEX/LABOCA sources,
focusing on those detected at 24 and/or 70um, indicates that in our
sample of 34 submm sources there are, at least: two WTTs, four CTTs,
five young stellar objects, eight proto-BD candidates (with another
three dubious cases), and one very low luminosity objects.
Description:
This work is focused on submm observations obtained with APEX/LABOCA
at 870um. The region mapped by LABOCA was selected based on the
Spitzer nebulosity. To complement the submm data, we have used both
observations obtained by our group and data retrieved from public
archives covering a broad wavelength range.