J/A+A/559/A3 Low-mass stars in Trumpler 37 (Sicilia-Aguilar+, 2013)
The low-mass stellar population in the young cluster Tr37:
Disk evolution, accretion, and environment.
Sicilia-Aguilar A., Kim J.S., Sobolev A., Getman K., Henning T., Fang M.
<Astron. Astrophys. 559, A3 (2013)>
=2013A&A...559A...3S 2013A&A...559A...3S
ADC_Keywords: Clusters, open ; Stars, pre-main sequence - Stars, late-type ;
Photometry ; Spectroscopy
Keywords: stars: pre-main sequence - protoplanetary disks - stars: late-type -
Abstract:
We present a study of accretion and protoplanetary disks around M-type
stars in the 4 Myr-old cluster Tr 37. With a well-studied solar-type
population, Tr 37 is a benchmark for disk evolution.
We used low-resolution spectroscopy to identify and classify 141
members (78 new ones) and 64 probable members, mostly M-type stars.
Hα emission provides information about accretion. Optical,
2MASS, Spitzer, and WISE data are used to trace the spectral energy
distributions (SEDs) and search for disks. We construct radiative
transfer models to explore the structures of full-disks,
pre-transition, transition, and dust-depleted disks.
Description:
These tables contain the details of the spectroscopic followup of
candidate M-type stars in the young cluster Tr37, presented in the
online Appendix of the paper. They include the details of the
spectroscopic observations, membership, spectral types, extinction,
available magnitudes (optical Johnsons magnitudes observed with LAICA
on the 3.5m Calar Alto Telescope, Spitzer, and WISE), spectral energy
distribution (SED) classification, and observed emission lines.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
tablea1.dat 93 583 Observations and spectroscopic information for
all observed objects
tablea2.dat 128 213 Optical and 2MASS data for confirmed members and
probable members
tablea3.dat 149 205 Spitzer IRAC and MIPS data for confirmed members
and probable members
tablea4.dat 77 73 *WISE data for confirmed members and probable members
tablea5.dat 57 158 Stars with multiple emission lines and their
identifications
--------------------------------------------------------------------------------
Note on tablea4.dat: Only good quality data in agreement with the Spitzer
fluxes are taken into account.
--------------------------------------------------------------------------------
See also:
J/AJ/130/188 : Trumpler 37 & NGC7160 young stars (Sicilia-Aguilar+, 2005)
J/ApJ/638/897 : Trumpler 37 & NGC7160 IR photometry (Sicilia-Aguilar+, 2006)
J/MNRAS/426/2917 : X-rays sources in Trumpler 37 (Getman+, 2012)
J/AN/334/673 : The stellar content of Trumpler 37 (Errmann+, 2013)
Byte-by-byte Description of file: tablea1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 A19 --- Name Object name (G1)
21- 24 I4 0.1nm W(Ha) ?=99 Hα equivalent width (1)
26- 28 F3.1 0.1nm W(Li) ?=9.9 LiI equivalent width (2)
30 A1 --- u_W(Li) [u] Uncertainty label for the W(Li)
32 A1 --- n_SpT [u/b] Note on spectral type: uncertain/best
33- 36 A4 --- SpT Spectral type (4)
38- 41 F4.1 mag AV ?=9.9 Extinction in V magnitude
43- 45 F3.1 mag e_AV ?=9.9 Error in the V magnitude extinction
47- 52 A6 --- Disk Presence of disk/IR excess (5)
54- 61 A8 --- Campgn Observing campaign and telescope
(2009-SAO, 2009-MMT, or 2010-MMT)
63- 68 A6 --- Memb Membership label and references (6)
71- 93 A23 --- Com Individual comments (7)
--------------------------------------------------------------------------------
Note (1): in Angstroms; 99 if Hα appears in absorption
Note (2): in Angstroms;
0.0 if Lithium absorption can be excluded (W(Li)<0.1Å);
9.9 if Lithium could not be measured (due to low S/N).
Note (4): The spectral types are self-explanatory, except!
E = spectral type earlier than G
Late = late M-type
ClsI = Class I object
X = Uncertain
The errors in the spectral type are of 0.5 subtypes for objects K5 or later,
1 subtype for early K stars, and 2-3 subtypes for G-type objects.
Note (5): Presence of disk/IR excess code (the number in brackets indicates
the wavelength at which the excess is observed, especially in case of
uncertain excess seen at a single wavelength):
Y = the object has IR excess/disk
N = the object does not have IR excess/disk
P = the object has probably IR excess/disk
pN = the object has probably no IR excess/no disk
Note (6): Membership label and references as follows:
Y = member
N = non-member
P = probable member
pN = probable non-member
X = uncertain membership
1 = object previously identified by Sicilia-Aguilar et al.
(2005, Cat. J/AJ/130/188, 2006, Cat. J/ApJ/638/897, Cat. J/AJ/132/2135)
2 = object previously identified by Barentsen et al.
(2011, Cat. J/MNRAS/415/103)
3 = object previously identified by Morales-Calderon et al.
(2009, Cat. J/ApJ/702/1507)
4 = object previously identified in X-ray by Getman et al.
(2012, Cat. J/MNRAS/426/2917)
5 = object previously identified from IR excess by Getman et al.
(2012, Cat. J/MNRAS/426/2917)
Note (7): Abbreviations used in comments:
Neb. = Nebular IR emission
Nobj. = Nearby object
Var. = SED suggestive of variability
oVVI = Object appears old in the V vs V-I diagram
dMe = dMe star
UXor = Colors of the object suggestive of UXor variability
Globu = Object associated to the IC1396A globule
Mini-cluster = Object associated to one of the Mini-clusters in Tr37
Any other comments are self-explanatory, other names of the object
(if any) are also listed in the comment field.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 A19 --- Name Object name (G1)
21- 26 F6.3 mag Vmag ?=99.999 Optical V magnitude, Johnsons system
28- 32 F5.3 mag e_Vmag ?=9.999 Error in the optical V magnitude
34- 35 A2 --- n_Vmag Label for the V magnitude (1)
37- 42 F6.3 mag Rmag ?=99.999 Optical R magnitude, Johnsons system
44- 48 F5.3 mag e_Rmag ?=9.999 Error in the optical R magnitude
50 A1 --- n_Rmag Label for the R magnitude (1)
52- 57 F6.3 mag Imag ?=99.999 Optical I magnitude, Johnsons system
59- 63 F5.3 mag e_Imag ?=9.999 Error in the optical I magnitude
65 A1 --- n_Imag Label for the I magnitude (1)
67- 82 A16 --- 2MASS 2MASS identification name
(Cutri et al., Cat. II/246)
84- 89 F6.3 mag Jmag ?=99.999 J magnitude from 2MASS
91- 95 F5.3 mag e_Jmag ?=9.999 Error in the J magnitude from 2MASS
97 A1 --- n_Jmag Label for the J magnitude (1)
99-104 F6.3 mag Hmag ?=99.999 H magnitude from 2MASS
106-110 F5.3 mag e_Hmag ?=9.999 Error in the H magnitude from 2MASS
112 A1 --- n_Hmag Label for the H magnitude (1)
114-119 F6.3 mag Ksmag ?=99.999 Ks magnitude from 2MASS
121-125 F5.3 mag e_Ksmag ?=9.999 Error in the Ks magnitude from 2MASS
127-128 A2 --- n_Ksmag Label for the Ks magnitude (1)
--------------------------------------------------------------------------------
Note (1): Labels as follows:
b = Near bright star HD206267
c = Near 21-840, likely contaminated
d = Near other bright stars, probably contaminated
u = Uncertain value
l = Magnitude lower limit
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 A19 --- Name Object name (G1)
21- 26 I6 uJy [3.6] ?=9999 Spitzer/IRAC band 1 (3.6um) flux
28- 30 I3 uJy e_[3.6] ?=999 Error in the ?=9999 IRAC band 1 flux
32- 36 I5 uJy [4.5] ?=9999 Spitzer/IRAC band 2 (4.5um) flux
38- 40 I3 uJy e_[4.5] ?=999 Error in the ?=9999 IRAC band 2 flux
42- 47 I6 uJy [5.8] ?=9999 Spitzer/IRAC band 3 (5.8um) flux
49- 51 I3 uJy e_[5.8] ?=999 Error in the ?=9999 IRAC band 3 flux
53- 57 I5 uJy [8.0] ?=9999 Spitzer/IRAC band 4 (8.0um) flux
59- 61 I3 uJy e_[8.0] ?=999 Error in the ?=9999 IRAC band 4 flux
63 A1 --- n_[8.0] Label for the ?=9999 IRAC band 4 flux (1)
65- 71 I7 uJy [24] ?=9999 Spitzer/MIPS 24um flux
73- 77 I5 uJy e_[24] ?=999 Error in the MIPS 24um flux
79 A1 --- n_[24] Label for the MIPS 24um flux (1)
82- 90 A9 --- SED SED type (2)
92 A1 --- n_SED Label on the SED type (1)
96-149 A54 --- Com Comments on the sources (3)
--------------------------------------------------------------------------------
Note (1): Labels in magnitudes as follows:
u = Uncertain
l = Upper limit
e = Edge of field
o = Out of field
Note (2): SED type as follows:
ClsI = Class I object
Full = Full disk
PTD = Pre-transitional disk
TD = Transitional disk
Dep. = Dust-depleted disk
ND = No disk
Note (3): Objects listed as "marginal detection" at 24um have probably IR
excesses but their photometry is compromised by low S/N or different
sources of contamination.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 A19 --- Name Object name
21- 26 F6.2 mJy [3.4] Flux in WISE 1 band (3.4um)
28- 31 F4.2 mJy e_[3.4] Error in the WISE W1 band flux
33 A1 --- n_[3.4] [a] Label for the WISE 1 band flux (1)
35- 40 F6.2 mJy [4.6] Flux in WISE 2 band (4.6um)
42- 45 F4.2 mJy e_[4.6] Error in the WISE W2 band flux
47 A1 --- n_[4.6] [a] Label for the WISE 2 band flux (1)
49- 55 F7.2 mJy [12] Flux in WISE 3 band (12um)
57- 60 F4.2 mJy e_[12] Error in the WISE W3 band flux
62 A1 --- n_[12] [a] Label for the WISE 3 band flux (1)
64- 69 F6.2 mJy [22] Flux in WISE 4 band (22um)
71- 75 F5.2 mJy e_[22] Error in the WISE W4 band flux
77 A1 --- n_[22] [a] Label for the WISE 4 band flux (1)
--------------------------------------------------------------------------------
Note (1): Label as follows:
a = Uncertain and/or contaminated, value not used to trace the SED
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 A19 --- Name Object name (G1)
21- 32 A12 --- Line Line name (1)
34- 39 F6.1 0.1nm W0 ?=9999 Line wavelength (laboratory)
41- 46 F6.1 0.1nm Wobs Line wavelength (observed)
48- 53 F6.1 0.1nm EW Equivalent width
55- 57 A3 --- u_EW [Unc ] Uncertainty flag (2)
--------------------------------------------------------------------------------
Note (1): The lines have been identified according to Sicilia-Aguilar et al.
(2012A&A...544A..93S 2012A&A...544A..93S), the NIST database, Appenzeller et al.
(1986A&AS...64...65A 1986A&AS...64...65A), and Hamann & Persson (1992ApJS...82..247H 1992ApJS...82..247H).
Note (2): Unc: Uncertain detection of the line.
--------------------------------------------------------------------------------
Global notes:
Note (G1): Sources are named HHMMSSsss+DDMMSSsss or
HHMMSSs+DDMMSSs, based on optical J2000 coordinates
--------------------------------------------------------------------------------
Acknowledgements:
Aurora Sicilia-Aguilar, aurora.sicilia(at)uam.es,
Universidad Autonoma de Madrid
(End) Aurora Sicilia-Aguilar [UAdM], Patricia Vannier [CDS] 22-Aug-2013