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Unveiling the circumstellar environment toward a massive young stellar object (Paron, Fariña, Ortega+, 2013, A&A, 559, L2) at NOVA


We discovered a cone shaped nebula that has an opening angle of about 90° and extends eastward of the IR source 2MASS J19142564+1109283, which is very likely a massive young stellar object (MYSO). This morphology suggests a cavity that was cleared in the circumstellar material, and its emission may arise from scattered continuum light, warm dust, and probably also from emission lines from shock-excited gas. The nebula, which presents arc-like features, is connected with the IR source through a jet-like structure, which is aligned with the blueshifted CO outflow found in a previous study.


Sergio Paron
Instituto de Astronomía y Física del Espacio IAFE - Buenos Aires - Argentina

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Unveiling the circumstellar environment toward a massive young stellar object

Authors: S. Paron, C. Fariña and M. E. Ortega

Data Table Fields:

NameTable Head DescriptionUnitUCD
centerAlpha Ctr. RA Approximate center of image, RA deg POS_EQ_RA_MAIN
centerDelta Ctr. Dec Approximate center of image, Dec deg POS_EQ_DEC_MAIN
imageTitle Title Synthetic name of the image N/A VOX:Image_Title
dateObs Obs. date Epoch at midpoint of observation d VOX:Image_MJDateObs
accref Product key Access key for the data N/A meta.ref.url
bandpassId Bandpass Freeform name of the bandpass used N/A VOX:BandPass_ID
accsize File size Size of the data in bytes byte VOX:Image_FileSize
pixelScale Scales The pixel scale on each image axis deg/pix VOX:Image_Scale
instId Instrument Identifier of the originating instrument N/A INST_ID
pixelSize Axes Lengths Number of pixels along each of the axes pix VOX:Image_Naxis
mime Type MIME type of the file served N/A meta.code.mime
nAxes #axes Number of axes in data N/A VOX:Image_Naxes
refFrame Ref. Frame Coordinate system reference frame N/A VOX:STC_CoordRefFrame
wcs_equinox Equinox Equinox of the given coordinates yr VOX:STC_CoordEquinox
wcs_projection Proj. FITS WCS projection type N/A VOX:WCS_CoordProjection
wcs_refPixel Ref. pixel WCS reference pixel pix VOX:WCS_CoordRefPixel
wcs_refValues Ref. values World coordinates at WCS reference pixel deg VOX:WCS_CoordRefValue
wcs_cdmatrix CD matrix FITS WCS CDij matrix deg/pix VOX:WCS_CDMatrix
bandpassUnit Bandpass unit Unit of bandpass specifications (always m). N/A VOX:BandPass_Unit
bandpassRefval Band Ref. Characteristic quantity for the bandpass of the image m VOX:BandPass_RefValue
bandpassHi Band upper Upper limit of the bandpass (in BandPass_Unit units) m VOX:BandPass_HiLimit
bandpassLo Band lower Lower limit of the bandpass (in BandPass_Unit units) m VOX:BandPass_LoLimit
pixflags P. Flags Flags specifying the processing done (C-original; F-resampled; Z-fluxes valid; X-not resampled; V-for display only N/A VOX:Image_PixFlags
coverage Coverage Field covered by the image deg N/A
owner Owner Owner of the data N/A N/A
embargo Embargo ends Date the data will become/became public a N/A
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