J/ApJS/196/4 New young star candidates in Taurus-Auriga (Rebull+, 2011)
New young star candidates in the Taurus-Auriga region as selected from the
Wide-field Infrared Survey Explorer.
Rebull L.M., Koenig X.P., Padgett D.L., Terebey S., McGehee P.M.,
Hillenbrand L.A., Knapp G.R., Leisawitz D., Liu W., Noriega-Crespo A.,
Ressler M.E., Stapelfeldt K.R., Fajardo-Acosta S., Mainzer A.
<Astrophys. J. Suppl. Ser., 196, 4 (2011)>
=2011ApJS..196....4R 2011ApJS..196....4R
ADC_Keywords: Photometry, infrared ; YSOs ; Surveys ; Stars, pre-main sequence ;
Molecular clouds
Keywords: circumstellar matter - infrared: stars - stars: formation -
stars: pre-main sequence
Abstract:
The Taurus Molecular Cloud subtends a large solid angle on the sky, in
excess of 250deg2. The search for legitimate Taurus members to date
has been limited by sky coverage as well as the challenge of
distinguishing members from field interlopers. The Wide-field Infrared
Survey Explorer has recently observed the entire sky, and we take
advantage of the opportunity to search for young stellar object (YSO)
candidate Taurus members from a ∼260deg2 region designed to
encompass previously identified Taurus members. We use near- and
mid-infrared colors to select objects with apparent infrared excesses
and incorporate other catalogs of ancillary data to present a list of
rediscovered Taurus YSOs with infrared excesses (taken to be due to
circumstellar disks), a list of rejected YSO candidates (largely
galaxies), and a list of 94 surviving candidate new YSO-like Taurus
members. There is likely to be contamination lingering in this
candidate list, and follow-up spectra are warranted.
Description:
In the context of Rebull et al. (2010ApJS..186..259R 2010ApJS..186..259R), we assembled a
substantial multi-wavelength database, spanning Sloan u through
Spitzer/MIPS 160um (with some X-rays) for point sources throughout the
Taurus region. We use that catalog as the core for our analysis here,
updating it with confirmed Taurus members from, e.g., Kenyon et al.
(2008hsf1.book..405K 2008hsf1.book..405K) and Luhman et al. (2010ApJS..186..111L 2010ApJS..186..111L) outside
of our original Spitzer map. We have also searched SIMBAD (and
literature references therein) for known galaxies and other
contaminants in this vicinity.
Our Taurus Spitzer Survey spanned ∼44deg2 (figure 1). WISE data
acquisition and reduction are discussed in Wright et al.
(2010AJ....140.1868W 2010AJ....140.1868W), Jarrett et al. (2011, ApJ, submitted), and in
the Explanatory Supplement to the WISE Preliminary Data Release
Products. There are four WISE bands, with central wavelengths at 3.4,
4.6, 12, and 22um, and a spatial resolution of 6" (12" at 22um).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 139 196 Multiband measurements of WISE-identified YSOs
with previous indications of youth in the
literature towards the Taurus region
table2.dat 168 724 Multiband measurements of WISE-identified
rejected YSO candidates in Taurus region
table3.dat 166 94 Multiband measurements of WISE-identified new
YSO candidates in Taurus region
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See also:
II/307 : WISE Preliminary Data Release (Cutri+ 2011)
J/A+A/519/A83 : T Tau stars toward the Taurus-Auriga region (Takita+ 2010)
J/ApJ/703/1964 : Spectra of three nearby star-forming regions (Furlan+, 2009)
J/ApJS/176/457 : Taurus dark cloud background star catalog (Shenoy+, 2008)
J/PASJ/60/209 : Faint companions around YSOs in TMC (Itoh+, 2008)
J/AJ/132/2665 : QUEST2 BRI photometry of Taurus-Auriga PMS (Slesnick+, 2006)
J/ApJ/647/1180 : Infrared photometry of Taurus SFR (Luhman+, 2006)
J/ApJ/581/1194 : Taurus-Auriga PMS stars ages and Teff (Palla+, 2002)
J/A+AS/145/187 : uvby-β photometry of WTTS (Chavarria-K+, 2000)
J/A+AS/132/173 : New weak-line T Tauri stars in Taurus-Auriga (Li+ 1998)
J/A+AS/124/449 : Young stars south of Taurus-Auriga (Magazzu+ 1997)
J/A+A/312/439 : New T Tauri stars in Taurus-Auriga (Wichmann+, 1996)
J/ApJS/101/117 : UBVRIJHKLMNQ photometry in Taurus-Auriga (Kenyon+ 1995)
http://irsa.ipac.caltech.edu/Missions/wise.html : WISE Infrared Science page
Byte-by-byte Description of file: table[123].dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Sequential number within the table
5- 23 A19 --- WISE Catalog identification (JHHMMSS.ss+DDMMSS.s)
25- 49 A25 --- Name Source name (1)
51- 55 F5.2 mag W1mag WISE 3.4 micron band magnitude
57- 60 F4.2 mag e_W1mag Uncertainty in W1mag
62- 66 F5.2 mag W2mag WISE 4.6 micron band magnitude
68- 71 F4.2 mag e_W2mag Uncertainty in W2mag
73- 77 F5.2 mag W3mag WISE 12 micron band magnitude
79- 82 F4.2 mag e_W3mag Uncertainty in W3mag
84- 88 F5.2 mag W4mag WISE 22 micron band magnitude
90- 93 F4.2 mag e_W4mag Uncertainty in W4mag
95 A1 --- St [b] status (2)
97-168 A72 --- Notes Additional source notes
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Note (1): Note added by CDS: In table 2 (Rejected YSO), the Name "TYC1823-680-1"
(04 11 22.762 +26 52 43.35, J2000) is very doubtfully linked to
WISE J041121.83+293320.5.
Note (2):
b = Object identified in Rebull et al. (2010ApJS..186..259R 2010ApJS..186..259R) as a
candidate Taurus member, but discussed there as needing additional
data to confirm/refute it as a Taurus member.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 14-Nov-2011