J/A+A/586/A47 Accretion process in NGC 2264 (Sousa+, 2016)
CSI 2264: Accretion process in classical T Tauri stars in the young cluster
NGC 2264.
Sousa A.P., Alencar S.H.P., Bouvier J., Stauffer J.R., Venuti L.,
Flaccomio E., Hillenbrand L., Cody A.M., Teixeira P.S., Guimaraes M.M.,
McGinnis P.T., Rebull L., Flaccomio E., Fueresz G., Micela G., Gameiro J.F.
<Astron. Astrophys. 586, A47 (2016)>
=2016A&A...586A..47S 2016A&A...586A..47S (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, open ; Stars, pre-main sequence ; Equivalent widths
Keywords: stars: formation - stars: variables: T Tauri, Herbig Ae/Be -
open cluster and associations: individual: NGC 2264 -
accretion: accretion disks
Abstract:
NGC 2264 is a young stellar cluster (∼3Myr) with hundreds of low-mass
accreting stars that allow a detailed analysis of the accretion
process taking place in the pre-main sequence.
Our goal is to relate the photometric and spectroscopic variability of
classical T Tauri stars to the physical processes acting in the
stellar and circumstellar environment, within a few stellar radii from
the star.
NGC 2264 was the target of a multiwavelength observational campaign
with CoRoT, MOST, Spitzer, and Chandra satellites and photometric and
spectroscopic observations from the ground. We classified the CoRoT
light curves of accreting systems according to their morphology and
compared our classification to several accretion diagnostics and disk
parameters.
Description:
We present stellar parameters of classical T Tauri stars (Table2) and
weak-lined T Tauri stars (Table3) of NGC 2264. The tables contain
parameters obtained from spectroscopic (spectral type, Halpha
equivalent width ...) and photometric (period from CoRoT ...) data.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 95 162 Parameters of the CTTSs observed by CoRoT
and/or FLAMES/VLT
table3.dat 62 305 Parameters of the WTTSs observed by CoRoT
and/or FLAMES/VLT
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See also:
J/AJ/147/82 : Monitoring of disk-bearing stars in NGC 2264 (Cody+, 2014)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- --- [CSIMon-]
8- 13 I06 --- CSIMon Internal identification of CSI 2264 campaign
15- 30 A16 --- 2MASS 2MASS identification (HHMMSSss+DDMMSSs)
32- 36 A5 --- SpType Spectral type (G1)
38- 42 F5.1 0.1nm EWHa ? Halpha equivalent width measured using
FLAMES spectra (G2)
44- 46 F3.1 0.1nm e_EWHa ? EWHa uncertainties obtained assuming a
Poisson distribution
48- 50 I3 km/s W10 ? Halpha width at 10% of maximum intensity
52- 56 F5.1 0.1nm EWHal ? Halpha equivalent width obtained by
Dahm et al., 2005AJ....129..829D 2005AJ....129..829D,
Cat. J/AJ/129/829
58 A1 --- FUR06 [cw] Classification as CTTS (c) or
WTTS (w) (G3)
60- 64 F5.2 --- alphaIRAC ? Slope of the spectral energy distribution
between 3.6 and 8um (G4)
66- 70 A5 --- LC2008 Note on 2008 light curves (5)
72- 76 F5.2 d Per2008 ? CoRoT photometric period
78- 82 A5 --- LC2011 Note on 2008 light curves (5)
84- 88 F5.2 d Per2011 ? CoRoT photometric period
90- 95 F6.3 --- Q ? Parameter defined by Cody et al.,
2014AJ....147...82C 2014AJ....147...82C to distinguish
periodic from aperiodic light curves
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Note (5): CoRoT light curve morphology as follows:
1 = spot-like
2 = AA Tau-like
3 = Non-periodic light curves
3 (A) = Non-periodic light curves with accretion bursts
3 (E) = Non-periodic light curves with aperiodic extinction
B = Binary
- = unclassified light curve
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 7 A7 --- --- [CSIMon-]
8- 13 I06 --- CSIMon Internal identification of CSI 2264 campaign
15- 30 A16 --- 2MASS 2MASS identification (HHMMSSss+DDMMSSs)
32- 36 A5 --- SpType Spectral type (G1)
38- 41 F4.1 0.1nm EWHa ? Halpha equivalent width measured using
FLAMES spectra (G2)
43- 45 F3.1 0.1nm e_EWHa ? EWHa uncertainties obtained assuming a
Poisson distribution
47- 49 I3 km/s W10 ? Halpha width at 10% of maximum intensity
51- 54 F4.1 0.1nm EWHal ? Halpha equivalent width obtained by
Dahm et al., 2005AJ....129..829D 2005AJ....129..829D,
Cat. J/AJ/129/829
56 A1 --- FUR06 [cw] Classification as CTTS (c) or
WTTS (w) (G3)
58- 62 F5.2 --- alphaIRAC ? Slope of the spectral energy distribution
between 3.6 and 8um (G4)
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Global notes:
Note (G1): Spectral types from
Venuti et al., 2014A&A...570A..82V 2014A&A...570A..82V, Cat. J/A+A/570/A82,
Dahm et al., 2005AJ....129..829D 2005AJ....129..829D, Cat. J/AJ/129/829,
Rebull et al., 2002AJ....123.1528R 2002AJ....123.1528R, Cat. J/AJ/123/1528 and
Walker et al., 1956ApJS....2..365W 1956ApJS....2..365W.
Note (G2): We used the convention that positive Halpha equivalent width
indicates Halpha in emission, and negative values indicate Halpha in
absorption.
Note (G3): Classification as CTTS (c) or WTTS (w) by Furesz et al.,
2006ApJ...648.1090F 2006ApJ...648.1090F, Cat. J/ApJ/648/1090
Note (G4): obtained by Teixeira et al., 2012A&A...540A..83T 2012A&A...540A..83T
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Acknowledgements:
Alana Sousa, alana(at)fisica.ufmg.br
(End) Patricia Vannier [CDS] 07-Oct-2015