/ftp/cats/aliases/M/./Majaess



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J/other/Ap+SS/344.175  Protoclusters and subclusters     (Majaess, 2013)
The following files can be converted to FITS (extension .fit or fit.gz)
	table1.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/other/ApSS/344.175
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Beginning of ReadMe : J/other/ApSS/344.175 Protoclusters and subclusters (Majaess, 2013) ================================================================================ Discovering protostars and their host clusters via WISE. Majaess D. <Astrophys. Space Sci. 344, 175 (2013)> =2013Ap&SS.344..175M ================================================================================ ADC_Keywords: YSOs ; Infrared sources ; Clusters, open Keywords: circumstellar matter - infrared: stars - stars: formation Abstract: A hybrid JHKs - W1W2W3W4 high-spectral index (alpha) selection scheme was employed to identify (sub)clusters of class I/f candidate protostars (YSOs) in WISE observations (the Wide-Field Infrared Survey Explorer). n>10^4^ candidate YSOs were detected owing to WISE's advantageous all-sky spatial coverage, and a subsample (n 200) of their heavily-obscured host (sub)clusters were correlated with the Avedisova (2002, Cat. V/112) and Dias et al. (2002A&A...389..871D, Cat. B/ocl) catalogs of star-forming regions. Forthcoming observations from the VVV/UKIDSS surveys shall facilitate the detection of additional protostars and bolster efforts to delineate the Galactic plane, since the campaigns aim to secure deep JHKs photometry for a pertinent fraction of the WISE targets lacking 2MASS detections, and to provide improved data for YSOs near the limits of the 2MASS survey. Description: This file contains a subsample of the embedded clusters identified, with an emphasis on smaller overlooked subclusters, whereby subclusters are offshoot clumps of emerging stars tied to broader star-forming regions (hierarchical clustering). The bulk of the targets deviate from spherical symmetry and are typically associated with larger complexes. Apparent sizes for the (sub)clusters are tabulated, and those entries tagged by an asterisk contain few members. The majority of the targets will dissolve prior to becoming an intermediate-age cluster. Clusters which were serendipitously identified as a result of the analysis are likewise tabulated. Numerous objects are not discernible in optical and even W1 images, which underscores the extreme obscuration endemic to the host environment. Following discussions with Dias et al., the cluster of class I/f YSOs discovered near the classical Cepheid SU Cas (Majaess et al. 2012MNRAS.421.1040M) is included as Majaess 230. New WISE mid-IR data unambiguously revealed a cluster of numerous class I/f YSOs centred at J2000 02:54:31.4 +69:20:32.5, and a nearby YSO and 2MASS overdensity were noted previously (e.g. Straizys & Kazlauskas 2010BaltA..19....1S, Froebrich et al. 2007MNRAS.374..399F). In sum, the results reaffirm the importance of the latest generation of infrared surveys (e.g., WISE) for enabling the detection of YSOs and their nascent environments. However, significant work remains and subsequent refinement to the YSO selection scheme pending the identification of biases is inevitable. Spectroscopic, deep IR photometric, and sub-mm (ALMA) follow-up observations for the cluster targets are desirable, and forthcoming. This publication makes use of data products from WISE, 2MASS, CDS, arXiv, NASA/IPAC ISA, and NASA ADS.