J/AN/334/673 The stellar content of Trumpler 37 (Errmann+, 2013)
The stellar content of the young open cluster Trumpler 37.
Errmann R., Neuhaeuser R., Marschall L., Torres G., Mugrauer M., Chen W.P.,
Hu S.C.-L., Briceno C., Chini R., Bukowiecki L., Dimitrov D.P.,
Kjurkchieva D., Jensen E.L.N., Cohen D.H., Wu Z.-Y., Pribulla T., Vanko M.,
Krushevska V., Budaj J., Oasa Y., Pandey A.K., Fernandez M., Kellerer A.,
Marka C.
<Astron. Nachrichten 334, 673 (2013)>
=2013AN....334..673E 2013AN....334..673E
ADC_Keywords: Clusters, open ; Photometry ; Proper motions ; Radial velocities ;
Equivalent widths
Keywords: open clusters and associations: individual (Trumpler 37)
Abstract:
With an apparent cluster diameter of 1.5deg and an age of ∼4Myr,
Trumpler 37 is an ideal target for photometric monitoring of young
stars as well as for the search of planetary transits, eclipsing
binaries and other sources of variability. The YETI consortium has
monitored Trumpler 37 throughout 2010 and 2011 to obtain a
comprehensive view of variable phenomena in this region. In this first
paper we present the cluster properties and membership determination
as derived from an extensive investigation of the literature. We also
compared the coordinate list to some YETI images. For 1872 stars we
found literature data. Among them 774 have high probability of being
member and 125 a medium probability. Based on infrared data we
re-calculate a cluster extinction of 0.9-1.2mag. We can confirm the
age and distance to be 3-5Myr and ∼870pc. Stellar masses are
determined from theoretical models and the mass function is fitted
with a power-law index of α=1.90 (0.1-0.4M☉) and
α=1.12 (1-10M☉).
Description:
The tables summarize the properties of stars in Trumpler 37. The
positions, names in different publications, photometry, spectral
classification and extinction, and the proper motions are given in
tablea1. All values were determined in earlier publications.
Tablea2 shows the radial velocity, equivalent widths for Hα and
Lithium, mass accretion, x-ray luminosity, and T Tauri type, as well
as the membership probability from proper motion. These values were
also determined in earlier publications. The following columns of the
membership probabilities using different data were determined by us.
The last columns in tablea2 presents the membership probability
determined by us from the measured values as well as the extinction,
and stellar masses. If data from different literature are available,
the more recent one is given.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 281 1891 Literature data of stars in Trumpler 37
tablea2.dat 104 1469 Literature data and membership probabilities of
stars in Trumpler 37
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See also:
J/AJ/128/805 : Low-mass stars in Cepheus OB2 region (Sicilia-Aguilar+ 2004)
J/AJ/130/188 : Young stars in Trumpler 37 & NGC7160 (Sicilia-Aguilar+, 2005)
J/ApJ/638/897 : IR photometry in Trumpler 37 & NGC7160 (Sicilia-Aguilar+, 2006)
J/AJ/132/2135 : High-resolution spectroscopy in Tr 37 (Sicilia-Aguilar+, 2006)
J/MNRAS/426/2917 : X-rays sources in Trumpler 37 (Getman+, 2012)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Seq [1/1891] Star sequential number in Catalog
6- 7 I2 h RAh Right ascension (J2000)
9- 10 I2 min RAm Right ascension (J2000)
12- 16 F5.2 s RAs Right ascension (J2000)
18 A1 --- DE- Declination sign (J2000)
20- 21 I2 deg DEd Declination (J2000)
23- 24 I2 arcmin DEm Declination (J2000)
26- 29 F4.1 arcsec DEs Declination (J2000)
31 A1 --- r Reference of Coordinates (G1)
33- 36 I4 --- MVA ? Number in MVA (G2)
38- 41 I4 --- WEBDA2 ? Second Number in the WEBDA-Catalog
43- 46 I4 --- WEBDA1 ? First Number in the WEBDA-Catalog
48- 54 A7 --- [SHB2004] Number in Sicilia-Aguilar et al. (1)
56- 60 F5.2 mag Umag ? U-band magnitude
62 A1 --- r_Umag Reference of Umag (G1)
64- 68 F5.2 mag Bmag ? B-band magnitude
70 A1 --- r_Bmag Reference of Bmag (G1)
72- 76 F5.2 mag Vmag ? V-band magnitude (2)
78 A1 --- r_Vmag Reference of Vmag (G1)
80- 84 F5.2 mag Rmag ? R-band magnitude
86- 90 F5.2 mag Imag ? I-band magnitude
92 A1 --- r_Rmag Reference of Rmag, Imag (G1)
94- 99 F6.3 mag Jmag ? 2MASS J-band magnitude
101-105 F5.3 mag e_Jmag ? Error of J-band magnitude (3)
107-112 F6.3 mag Hmag ? 2MASS H-band magnitude
114-118 F5.3 mag e_Hmag ? Error of H-band magnitude (3)
120-125 F6.3 mag Kmag ? 2MASS Ks-band magnitude
127-131 F5.3 mag e_Kmag ? Error of K-band magnitude (3)
133 A1 --- r_Kmag Reference of JHK magnitudes (G1)
135-143 A9 --- SpType Spectral type
145 A1 --- r_SpType Reference for SpType (G1)
147-152 A6 --- Lum Luminosity class
154 A1 --- r_Lum Reference for Lumclass (G1)
156-159 F4.2 mag AV ? V-band extinction
161 A1 --- r_AV Reference for AV (G1)
163-168 F6.1 mas/yr pmRA1 ? PPMXL proper motion in RA(*cos(Dec)) (4)
170-173 F4.1 mas/yr e_pmRA1 ? Mean error on pmRA (PPMXL) (4)
175-180 F6.1 mas/yr pmDE1 ? PPMXL proper motion in Dec (4)
182-185 F4.1 mas/yr e_pmDE1 ? Mean error on pmDE (PPMXL) (4)
187-192 F6.1 mas/yr pmRA2 ? UCAC3 proper motion in RA(*cos(Dec)) (5)
194-197 F4.1 mas/yr e_pmRA2 ? Mean error on pmRA (UCAC3) (5)
199-204 F6.1 mas/yr pmDE2 ? UCAC3 proper motion in Dec (5)
206-209 F4.1 mas/yr e_pmDE2 ? Mean error on pmDE (UCAC3) (5)
211-215 F5.1 mas/yr pmRA3 ? MVA proper motion in RA (G2)
217-221 F5.1 mas/yr pmDE3 ? MVA proper motion in Dec (G2)
223-281 A59 --- Com Comments (6)
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Note (1): Sicilia-Aguilar et al., 2004, Cat. J/AJ/128/805,
2005, Cat. J/AJ/130/188, 2006, Cat. J/ApJ/638/897, 2006, Cat. J/AJ/132/2135.
Identified as [SHB2004] Trumpler 37 NN-NNNN in Simbad.
Note (2): The V magnitude was measured from photographic plate, photoelectrical
or with CCD, depending on literature source. Thus makes the comparison
difficult.
Note (3): Errors in JHK-photometry are given only, if the 2MASS quality flag is
"A", "B", "C" or "D", otherwise an empty cells indicates uncertainties in
the 2MASS photometry.
Note (4): Roeser, Demleitner & Schilbach (2010AJ....139.2440R 2010AJ....139.2440R, Cat. I/317)
Note (5): Zacharias et al. (2010AJ....139.2184Z 2010AJ....139.2184Z, Cat. I/315)
Note (6): Comments to the stars. Letters in [] indicate publications
listed in Note (G1) below. Leys to abbreviations:
"near #": if two stars were located close to each other (<5arcsec).
"no star" or "no/faint star": we were not able to find the star from
Marschall & van Altena (1987AJ.....94...71M 1987AJ.....94...71M) in our images.
"new coordinates": we changed the coordinates from Marschall & van Altena
(1987AJ.....94...71M 1987AJ.....94...71M) to match the position that was given in their
finding chart.
"no opt. cp." or "very faint opt. cp.": in cases of infrared data
(Sicilia-Aguilar et al. (2006ApJ...638..897S 2006ApJ...638..897S)), we were not able to see
some stars in our optical images (opt. cp. standing for optical
counterpart).
"JHK in [f] different": Sicilia-Aguilar et al. (2004AJ....128..805S 2004AJ....128..805S)
used the earlier compilation of the 2MASS catalog (Cutrie et al.
(2003yCat.2246....0C 2003yCat.2246....0C)), hence the values differ from Jmag, Hmag. and
Kmag.
"2x[r]": In case of two not distinguishable 2MASS sources near the star,
the entry was duplicated in the consecutive row, so both sources were
connected. The fainter one was marked. Probably, the other data from the
literature, like optical brightness, is not resolved in this case.
"outFoV": stars from Marschall & van Altena (1987AJ.....94...71M 1987AJ.....94...71M) and the
WEBDA database, which are located outside of all YETI telescope fields
of view.
"Dec [h] imprec." or "[m] imprec.": In some cases stars with the same names
(and properties) differ in the coordinates in different catalogs. The
more reliable coordinate was used.
"WEBDA wrong": In some entries the WEBDA entries were even wrong.
"SB1" or SB2": Spectroscopic binaries from Sicilia-Aguilar et al.
(2006, Cat. J/AJ/132/2135).
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Byte-by-byte Description of file: tablea2.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Seq [1/1891] Star sequential number in Catalog
6- 11 F6.1 km/s RV ? Radial velocity
13 A1 --- r_RV Reference for RV (G1)
15- 16 I2 % Mpr [0/100]? Membership probability from proper
motion (G2)
18- 20 F3.1 0.1nm W(Li)1 ? Equivalent width of Li(6708) (max) (7)
22 A1 --- r_W(Li)1 Reference for W(Li)1 (G1)
24- 26 F3.1 0.1nm W(Li)0 ? Equivalent width of Li(6708) (min) (7)
28 A1 --- r_W(Li)0 Reference for W(Li)0 (G1)
30- 35 F6.1 0.1nm W(Ha)1 ? Equivalent width of Hα (max) (7)
37 A1 --- r_W(Ha)1 Reference for W(Ha)1 (G1)
39- 44 F6.1 0.1nm W(Ha)0 ? Equivalent width of Hα (min) (7)
46 A1 --- r_W(Ha)0 Reference for W(Ha)0 (G1)
48- 52 F5.2 10-8Msun/yr Acc1 ? Accretion rate (8)
53 A1 --- l_Acc [←] Limit or range in accretion rate
54- 58 F5.2 10-8Msun/yr Acc ? Accretion rate (upper limit) (8)
59 A1 --- u_Acc [:] Uncertainty flag (8)
61- 65 F5.2 10+23W LX ? X-ray luminosity (9)
67- 77 A11 --- TType T Tauri type (classical/weak)
79 A1 --- r_TType Reference for TType (G1)
81 A1 --- M1 [hml] Membership from Li(6708) (10)
83 A1 --- M2 [hml] Membership from Hα (10)
85 A1 --- M3 [hml] Membership from RV (10)
87 A1 --- M4 [hml] Membership from dM/dt (8) (10)
89 A1 --- M5 [hml] Membership from LX (9) (10)
91 A1 --- M6 [hml] Membership from IR excess (10) (11)
93 A1 --- M7 [hml] Membership from Variability (10) (12)
95 A1 --- M8 [hml] Membership from proper motion (G2) (10)
97-100 F4.2 mag AVi ? Visual extinction from JHK (13)
102-104 F3.1 Msun Mass ? Mass of the star
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Note (7): If the minimum and maximum values for the equivalent widths of
Li(6708) and Hα are the same, only the maximum column is filled.
Note (8): from Sicilia-Aguilar et al. (2006, Cat. J/AJ/132/2135).
Note (9): corrected for absorption, from Mercer et al. (2009AJ....138....7M 2009AJ....138....7M).
Note (10): Membership probability code is h=high, m=medium, l=low
Note (11): from Sicilia-Aguilar et al. (2006, Cat. J/ApJ/638/897).
Note (12): from Morales-Calderon et al. (2009, Cat. J/ApJ/702/1507),
Sicilia-Aguilar et al. (2005, Cat. J/AJ/130/188), and
Sicilia-Aguilar et al. (2004, Cat. J/AJ/128/805).
Note (13): computed for stars with known spectral type, and corrected for
from circumstellar dust.
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Global Notes:
Note (G1): The letters indicate the reference source for the value. Thereby
the different WEBDA tables were compiled from different literature, the
main publications are given in brackets, as follows:
a = Morales-Calderon et al. (2009, Cat. J/ApJ/702/1507)
b = Mercer et al. (2009AJ....138....7M 2009AJ....138....7M)
c = Sicilia-Aguilar et al. (2006, Cat. J/AJ/132/2135)
d = Sicilia-Aguilar et al. (2006, Cat. J/ApJ/638/897)
e = Sicilia-Aguilar et al. (2005, Cat. J/AJ/130/188)
f = Sicilia-Aguilar et al. (2004, Cat. J/AJ/128/805)
g = WEBDA (consists of Sicilia-Aguilar et al. (2004, Cat. J/AJ/128/805)
and Morbidelli et al. (1997A&A...327..125M 1997A&A...327..125M)
h = Contreras et al. (2002AJ....124.1585C 2002AJ....124.1585C) (used for photometry Marschall,
Karshner & Comins (1990AJ.....99.1536M 1990AJ.....99.1536M))
i = Marschall et al. (1990AJ.....99.1536M 1990AJ.....99.1536M)
j = Marschall & van Altena (1987AJ.....94...71M 1987AJ.....94...71M) (V magnitudes from fitting
instrumental magnitudes to photometry from Garrison & Kormendy
(1976PASP...88..865G 1976PASP...88..865G) and de Lichtbuer (1982VatOP...2....1C 1982VatOP...2....1C))
k = Kun (1986Ap&SS.125...13K 1986Ap&SS.125...13K);
l = WEBDA (consists of Marschall et al. (1990AJ.....99.1536M 1990AJ.....99.1536M), Garrison &
Kormendy (1976PASP...88..865G 1976PASP...88..865G), Simonson (1968ApJ...154..923S 1968ApJ...154..923S) and
other publications for few stars)
m = WEBDA (coordinate source);
n = WEBDA (consists of Marschall & van Altena (1987AJ.....94...71M 1987AJ.....94...71M) and
internal WEBDA information)
o = WEBDA (consists of 6 publications for 7 stars)
p = WEBDA (consists of Garrison & Kormendy (1976PASP...88..865G 1976PASP...88..865G) and other
publications for few stars)
q = WEBDA (consists of Alkansis (1958TrRig...7...33A 1958TrRig...7...33A), Contreras et al.
(2002AJ....124.1585C 2002AJ....124.1585C), Sicilia-Aguilar et al. (2004,
Cat. J/AJ/128/805), Balazs et al. (1996A&A...311..145B 1996A&A...311..145B) and other
publication for few stars)
r = 2MASS (Skrutskie et al. (2006AJ....131.1163S 2006AJ....131.1163S), Cat. II/246)
Note (G2): from Marschall & van Altena (1987AJ.....94...71M 1987AJ.....94...71M).
Sources identified as <Cl* Trumpler 37 MVA NNNN> in Simbad.
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Acknowledgements:
Ronny Errmann, p4erro(at)uni-jena.de
(End) Ronny Errmann [AIU Jena, Germany], Patricia Vannier [CDS] 08-Aug-2013