J/ApJ/928/134 NIR phot. & optical veiling in T Tauri stars (Sullivan+, 2022)
Optical and near-infrared excesses are correlated in T Tauri stars.
Sullivan K., Kraus A.L.
<Astrophys. J., 928, 134 (2022)>
=2022ApJ...928..134S 2022ApJ...928..134S
ADC_Keywords: YSOs; Photometry, infrared; Optical; Extinction; Stars, distances
Keywords: Protoplanetary disks ; Circumstellar disks ; T Tauri stars ;
Young stellar objects ; Stellar accretion
Abstract:
Accretion is one of the defining characteristics of classical T Tauri
stars, fueled by the presence of a circumstellar disk comprised of
dust and gas. Accretion produces a UV and optical excess, while
re-radiated emission at the inner edge of the dust component of the
disk produces a near-infrared (NIR) excess. The interplay between
stars and their disks helps regulate protoplanetary disk evolution and
dispersal, which is key to a full understanding of planet formation.
To investigate the relations between NIR excess and optical excess in
both single and binary stars, we used an archival sample of
spectroscopically characterized members of the Taurus star-forming
region (τ∼1-2Myr) with measured luminosities, spectral types, and
optical veiling. We combined the archival sample with the Two Micron
All Sky Survey and Wide-field Infrared Survey Explorer NIR photometry
and high-resolution imaging surveys. We found that NIR and optical
excesses are correlated in multiple NIR photometric bands, suggesting
that they are closely related, likely because more massive disks have
higher inner dust disk walls and are also associated with higher
accretion rates. We also found that multiplicity has no impact on
accretion or inner disk properties in a sample with a wide range of
separations, but the sample was too small to specifically investigate
close binaries, where the effects of multiplicity on disk properties
should be most significant.
Description:
We began with the T Tauri star (TTS) sample from
Herczeg & Hillenbrand (2014, J/ApJ/786/97), which is a relatively
homogeneous collection of moderate-resolution optical spectroscopic
observations of 281 stars from the Taurus (τ∼1Myr), Lupus
(τ∼1-3Myr), Ophiuchus (τ∼2-6Myr), TW Hydra (τ∼8-10Myr),
and MBM 12 (τ∼2Myr) associations. We restricted the sample to
Taurus targets and removed known binaries.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 100 163 System parameters for each source
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
VI/119 : High accuracy computed water line list - BT2 (Barber+, 2006)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
II/328 : AllWISE Data Release (Cutri+ 2013)
I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)
J/A+A/299/89 : COYOTES II (Bouvier+, 1995)
J/ApJS/101/117 : UBVRIJHKLMNQ photometry in Taurus-Auriga (Kenyon+ 1995)
J/A+A/349/619 : UBVRI light curves of AA Tau in 1995 (Bouvier+, 1999)
J/AJ/121/3160 : JHK photometry near the Trapezium region (Carpenter+, 2001)
J/A+A/365/90 : NIR H lines in TTS (Folha+, 2001)
J/A+A/396/513 : Stellar Rotation in the Orion Nebula Cluster (Herbst+, 2002)
J/A+A/452/245 : Near-IR photometry of PMS stars in rho Oph (Natta+, 2006)
J/ApJ/667/308 : Weak-line T Tauri in Spitzer c2d Survey. II. (Cieza+, 2007)
J/A+A/461/183 : Variability of classical T Tauri (Grankin+, 2007)
J/ApJ/696/L84 : Primordial circumstellar disks in binary syst. (Cieza+, 2009)
J/ApJS/186/111 : Spitzer observations of Taurus members (Luhman+, 2010)
J/ApJS/190/1 : A survey of stellar families (Raghavan+, 2010)
J/ApJS/186/259 : Taurus Spitzer survey: new candidate members (Rebull+, 2010)
J/ApJ/731/8 : Multiple star formation in Taurus-Auriga (Kraus+, 2011)
J/ApJ/751/115 : Millimeter emission from Taurus binary systems (Harris+, 2012)
J/ApJ/757/141 : Companion IR detection limits in young assoc. (Kraus+, 2012)
J/ApJ/745/19 : Binary systems in Taurus-Auriga (Kraus+, 2012)
J/ApJ/758/31 : IR photometry for members of Upper Sco (Luhman+, 2012)
J/A+A/557/A77 : VR light curves of AA Tau in 2007-2013 (Bouvier+, 2013)
J/ApJS/208/9 : Intrinsic colors and temperatures of PMS stars (Pecaut+, 2013)
J/AJ/146/112 : V light curve of RW Aur (Rodriguez+, 2013)
J/A+A/561/A2 : 36 accreting YSOs emission lines (Alcala+, 2014)
J/ApJ/786/97 : Photospheric properties of T Tauri stars (Herczeg+, 2014)
J/A+A/570/A82 : Mapping accretion variability in NGC 2264 (Venuti+, 2014)
J/ApJ/799/155 : Sub-stellar companions in Taurus (Daemgen+, 2015)
J/AJ/150/32 : KELT 2006-2013 phot. of V409 Tau and AA Tau (Rodriguez+, 2015)
J/A+A/586/A47 : Accretion process in NGC 2264 (Sousa+, 2016)
J/A+A/600/A20 : Lupus YSOs X-shooter spectroscopy (Alcala+, 2017)
J/AJ/156/75 : Circumstellar disks in Upper Sco association (Esplin+, 2018)
J/A+A/632/A46 : TW Hydrae association with X-shooter (Venuti+, 2019)
J/AJ/157/216 : Stellar mult. rate of M dwarfs within 25 pc (Winters+, 2019)
J/AJ/159/282 : Membership in Ophiuchus & Upper Scorpius (Esplin+, 2020)
J/ApJ/904/146 : Young stars in North America & Pelican Nebulae (Fang+, 2020)
J/ApJ/898/47 : Fe/H & rad. from blended sp. of simulated bin. (Furlan+, 2020)
J/A+A/643/A148 : Lupus DANCe. Census & 6D structure with Gaia (Galli+, 2020)
J/AJ/162/110 : Gaia EDR3 census of the Taurus-Auriga (Krolikowski+, 2021)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Name Object identifier
17- 39 A23 --- OName The 2MASS or SIMBAD identifier
41- 43 I3 pc Dist [49/301] Distance (Gaia EDR3 inverted parallax)
45 A1 --- f_Dist [c] Flag on Dist (1)
47- 50 F4.2 --- Veil [0.0/0.57] Veiling (2)
52- 56 F5.2 mag Av [-0.25/9.3] V band extinction (2)
58- 58 A1 --- f_Av [ab] Flag on Av (3)
60- 60 A1 --- Disk Disk flag; (Y)es or (N)o
62- 68 A7 --- Binary Binary flag(s) (4)
72- 76 F5.2 mag Jmag [5.9/13.81] Apparent 2MASS J band Vega magnitude
78- 82 F5.2 mag Hmag [5/12.7] Apparent 2MASS H band Vega magnitude
84- 88 F5.2 mag Ksmag [4.2/12.3] Apparent 2MASS Ks band Vega magnitude
90- 94 F5.2 mag W1mag [3.29/12] WISE 3.4 micron band Vega magnitude
96-100 F5.2 mag W2mag [1.6/11.5] WISE 4.6 micron band Vega magnitude
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Note (1): Flag on distance as follows:
c = System did not have a Gaia distance measurement, so the
Herczeg & Hillenbrand (2014, J/ApJ/786/97) distance
measurement was used.
Note (2): From HH14 (Herczeg & Hillenbrand 2014, J/ApJ/786/97)
Note (3): Flag on Av as follows:
a = Av measurement from Herczeg & Hillenbrand 2014, J/ApJ/786/97 may be
incorrect or require RV{=/=}3.1, and system was removed from analysis.
b = System has an anomalous SED and was removed from analysis.
Note (4): Binary flag as follows:
1 = Kraus et al. (2011, J/ApJ/731/8);
2 = Daemgen et al. (2015, J/ApJ/799/155);
3 = Kraus & Hillenbrand (2012, J/ApJ/745/19);
4 = Schaefer et al. (2014AJ....147..157S 2014AJ....147..157S).
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 26-Feb-2024