/ftp/cats/J_other/PASP/132/J4401



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J/PASP/132/J4401    YSOs detection with W filter             (Allers+, 2020)
The following files can be converted to FITS (extension .fit or fit.gz)
	table3.dat table4.dat table5.dat table6.dat
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Query from: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/PASP/132/J4401
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drwxr-xr-x 6 cats archive 134 Mar 4 2021 [Up] drwxr-xr-x 3 cats archive 4096 Jul 6 2021 [TAR file] -rw-r--r-- 1 cats archive 498 Mar 4 2021 .message -r--r--r-- 1 cats archive 9862 Mar 4 2021 ReadMe -rw-r--r-- 1 cats archive 628 Mar 4 2021 +footg5.gif -rw-r--r-- 1 cats archive 2422 Mar 4 2021 +footg8.gif -r--r--r-- 1 cats archive 3726 Feb 24 2021 table3.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 6507 Feb 24 2021 table4.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 5568 Feb 24 2021 table5.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 5907 Feb 24 2021 table6.dat [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : J/PASP/132/J4401 YSOs detection with W filter (Allers+, 2020) ================================================================================ A novel survey for young substellar objects with the W-band filter. I. Filter design and new discoveries in Ophiuchus and Perseus. Allers K.N., Liu M.C. <Publ. Astron. Soc. Pac., 132, j4401 (2020)> =2020PASP..132j4401A (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Clusters, open ; Photometry, infrared ; YSOs Abstract: We present the design and implementation of a medium-band near-IR filter tailored for detecting low-mass stars and brown dwarfs from the summit of Maunakea. The W-band filter is centered at 1.45mum with a bandpass width of 6%, designed to measure the depth of the H_2_O water absorption prominent in objects with spectral types of M6 and later. When combined with standard J and H photometry, the W-band filter is designed to determine spectral types to  =1.4 subtypes for late-M and L dwarfs, largely independent of surface gravity and reddening. This filter's primary application is completing the census of young substellar objects in star-forming regions, using W-band selection to greatly reduce contamination by reddened background stars that impede broad-band imaging surveys. We deployed the filter on the UH 88 inch telescope to survey  3 degree^2^ of the NGC 1333, IC 348, and rho Ophiuchus star-forming regions. Our spectroscopic followup of W-band selected candidates resulted in the confirmation of 48 ultracool dwarfs with a success rate of 89%, demonstrating the efficacy of this new filter and selection method. Description: To search for brown dwarfs in star-forming regions, we have designed the W-band filter, a medium-bandpass filter centered at 1.45um. Our W-band filter can be combined with broad-band J and H photometry to create a reddening-insensitive index, Q. We tested the efficacy of our filter by selecting candidate young brown dwarfs based only on their Q values. Using SpeX, we spectroscopically confirm 48/60 objects as having spectral types of M5 and later. If we include objects that met our selection criteria but were already spectroscopically confirmed prior to our SpeX observations, our confirmation rate is 95/107.

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