J/PASP/125/809 New nearby M, L, and T dwarfs (Thompson+, 2013)
Nearby M, L, and T dwarfs discovered by the Wide-field Infrared Survey
Explorer (WISE).
Thompson M.A., Kirkpatrick J.D., Mace G.N., Cushing M.C., Gelino C.R.,
Griffith R.L., Skrutskie M.F., Eisenhardt P.R.M., Wright E.L., Marsh K.A.,
Mix K.J., Beichman C.A., Faherty J.K., Toloza O., Ferrara J., Apodaca B.,
McLean I.S., Bloom J.S.
<Publ. Astron. Soc. Pac., 125, 809-837 (2013)>
=2013PASP..125..809T 2013PASP..125..809T
ADC_Keywords: Stars, nearby ; Stars, dwarfs ; Stars, M-type ; Stars, late-type
Keywords: astrophysical data
Abstract:
In our effort to complete the census of low-mass stars and brown
dwarfs in the immediate solar neighborhood, we present spectra,
photometry, proper motions, and distance estimates for 42 low-mass
star and brown dwarf candidates discovered by the Wide-field Infrared
Survey Explorer (WISE). We also present additional follow-up
information on 12 candidates selected using WISE data but previously
published elsewhere. The new discoveries include 15 M dwarfs, 17 L
dwarfs, five T dwarfs, and five objects of other types. Among these
discoveries is a newly identified "unusually red L dwarf" (WISE
J223527.07+451140.9), four peculiar L dwarfs whose spectra are most
readily explained as unresolved L+T binary systems, and a T9 dwarf
(WISE J124309.61+844547.8). We also show that the recently discovered
red L dwarf WISEP J004701.06+680352.1 may be a low-gravity object and
hence young and potentially low-mass (<25MJup).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 158 69 Photometry of candidates with confirming spectra
table2.dat 53 25 Spitzer/IRAC photometry of objects in Table 1
table3.dat 69 55 Spectroscopic observation log
table4.dat 106 54 Astrometry of candidates
table5.dat 64 54 Proper motions and estimates of distances and
tangential Velocities
table9.dat 132 45 L dwarfs with J-Ks>2.00mag
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
II/328 : AllWISE Data Release (Cutri+ 2013)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 26 A26 --- Name Designation
27 A1 --- n_Name Note on Name (1)
29 A1 --- l_W1mag Limit flag on W1mag
30- 34 F5.2 mag W1mag WISE W1 (3.4um) magnitude
36- 39 F4.2 mag e_W1mag ? rms uncertainty on W1mag
41- 45 F5.2 mag W2mag WISE W2 (4.6um) magnitude
47- 50 F4.2 mag e_W2mag rms uncertainty on W2mag
52 A1 --- l_W3mag Limit flag on W3mag
53- 57 F5.2 mag W3mag WISE W3 (12um) magnitude
59- 62 F4.2 mag e_W3mag ? rms uncertainty on W3mag
64 A1 --- l_W1-W2 Limit flag on W1-W2
65- 69 F5.2 mag W1-W2 W1-W2 colour index
71- 74 F4.2 mag e_W1-W2 ? rms uncertainty on W1-W2
76 A1 --- l_Jmag Limit flag on Jmag
77- 81 F5.2 mag Jmag J magnitude
83- 86 F4.2 mag e_Jmag ? rms uncertainty on Jmag
87 A1 --- n_Jmag Note on Jmag (1)
89 A1 --- l_Hmag Limit flag on Hmag
90- 94 F5.2 mag Hmag H magnitude
96- 99 F4.2 mag e_Hmag ? rms uncertainty on Hmag
101 A1 --- l_Ksmag Limit flag on Ksmag
102-106 F5.2 mag Ksmag ? Ks magnitude
108-111 F4.2 mag e_Ksmag ? rms uncertainty on Ksmag
113 A1 --- l_J-H Limit flag on J-H
114-118 F5.2 mag J-H ? J-H colour index
120-123 F4.2 mag e_J-H ? rms uncertainty on J-H
124 A1 --- n_J-H Note on J-H (1)
126 A1 --- l_J-Ks Limit flag on J-Ks
127-130 F4.2 mag J-Ks ? J-Ks colour index
132-135 F4.2 mag e_J-Ks ? rms uncertainty on J-Ks
136 A1 --- n_J-Ks Note on J-Ks (1)
138 A1 --- WISE [btp-] Code for WISE search (2)
139 A1 --- n_WISE Note on WISE (1)
140 A1 --- --- [,]
141-142 A2 --- Cat Catalog or instrument from which the JHKs
photometry was taken (3)
144-158 A15 --- SName Short name
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Note (2): WISE search (see Sect. 2) from which the object was drawn as follows:
b = the bright L and T dwarf search
t = the late-T dwarf search
p = the proper motion search
Note (3): Ogirin of the JHKs photometry as follows:
1a = 2MASS All-Sky Point Source Catalog
1b = 2MASS Survey Point Source Reject Table
2 = PAIRITEL
3 = CTIO4m/NEWFIRM
4 = Palomar/WIRC
5 = Bigelow/2MASS
6 = SOAR/OSIRIS
Note (1): Notes as follows:
a = Discovered by West et al. (2008AJ....135..785W 2008AJ....135..785W, Cat. J/AJ/135/785).
Also known as WISE J075054.65+445416.2.
b = Discovered by Cruz et al. (2003AJ....126.2421C 2003AJ....126.2421C, Cat. J/AJ/126/2421).
Also known as WISE J085925.22-194927.9.
c = Discovered by Knapp et al. (2004AJ....127.3553K 2004AJ....127.3553K, Cat. J/AJ/127/3553).
Also known as WISE J115553.58+055957.0.
d = Discovered by Sheppard & Cushing (2009AJ....137..304S 2009AJ....137..304S).
Also known as WISE J135803.55+145822.7.
e = Discovered by Lepine ((2008AJ....135.2177L 2008AJ....135.2177L, Cat. J/AJ/135/2177).
Also known as WISE J152145.89-271309.0.
f = Discovered by Zhang et al. (2009A&A...497..619Z 2009A&A...497..619Z, Cat. J/A+A/497/619).
Also known as WISE J161459.80+400436.4.
g = Discovered by Kirkpatrick et al. (2011ApJS..197...19K 2011ApJS..197...19K, Cat.
J/ApJS/197/19). Also known as WISE J183058.56+454257.4.
h = Discovered by Castro & Gizis (2012ApJ...746....3C 2012ApJ...746....3C), not independently
discovered by us, but listed/re-observed for comparison purposes.
Also known as WISE J060738.65+242953.5.
i = Discovered by Gizis et al. (2012AJ....144...94G 2012AJ....144...94G).
Also known as WISE J004701.07+680352.1.
j = Discovered by Lepine (2008AJ....135.2177L 2008AJ....135.2177L, Cat. J/AJ/135/2177).
Also known as WISE J152258.92-024456.5.
k = Discovered by Lepine (2008AJ....135.2177L 2008AJ....135.2177L, Cat. J/AJ/135/2177).
Also known as WISE J171343.45-453601.4.
l = Companion to G 225-36. See Sect. 4.1.
m = Lies 30" away from [WKA2010] Core 5, a dense core inside a molecular
cloud.
n = Discovered by Burningham et al. (2013MNRAS.433..457B 2013MNRAS.433..457B, Cat.
J/MNRAS/433/457). Also known as WISE J102940.51+093514.1
p = The J-band magnitude of this source comes primarily from a latent
artifact caused by a bright star, so this measurement should be treated
with caution.
q = This source was selected from the WISE Pass-2 4-Band Level 1 Source Table
using criteria paralleling those of the bright L and T dwarf search.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- SName Short name
16- 20 F5.2 mag [3.6] Spitzer/IRAC 3.6um magnitude
22- 25 F4.2 mag e_[3.6] rms uncertainty on [3.6]
27- 31 F5.2 mag [4.5] Spitzer/IRAC 4.5um magnitude
33- 36 F4.2 mag e_[4.5] rms uncertainty on [4.5]
38- 42 F5.2 mag [3.6/4.2] IRAC [3.4]-[4.5] colour index
44- 47 F4.2 mag e_[3.6/4.2] rms uncertainty on [3.6]-[4.5]
49- 53 I5 --- Prog Spitzer Program number
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- SName Short name
17- 31 A15 --- SpType Near-infrared spectral type (1)
33- 47 A15 --- Tel Telescope/instrument
49- 59 A11 "date" Date Observation date (UT) (YYYY/MMM/DD)
61- 69 A9 --- Tstar Telluric corrector star
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Note (1): All objects are dwarfs unless otherwise noted.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- SName Short name
17- 27 F11.7 deg RAWdeg WISE right ascension (J2000)
29- 32 F4.2 arcsec e_RAWdeg rms uncertainty on RAWdeg
34- 44 F11.7 deg DEWdeg WISE declination (J2000)
46- 49 F4.2 arcsec e_DEWdeg rms uncertainty on DEWdeg
51- 57 F7.1 d MJDW WISE observation MJD
59- 68 F10.6 deg RA2deg ? 2MASS right ascension (J2000)
70- 73 F4.2 arcsec e_RA2deg ? rms uncertainty on RA2deg
75- 84 F10.6 deg DE2deg ? 2MASS declination (J2000)
86- 89 F4.2 arcsec e_DE2deg ? rms uncertainty on DE2deg
91- 97 F7.1 d MJD2 ? 2MASS observation MJD
99-106 A8 --- Note "not seen" when not seen in 2MASS
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- SName Short name
17- 21 F5.2 arcsec/yr pmRA ?=- Proper motion along RA
23- 26 F4.2 arcsec/yr e_pmRA ? rms uncertainty on pmRA
28- 32 F5.2 arcsec/yr pmDE ?=- Proper motion along DE
34- 37 F4.2 arcsec/yr e_pmDE ? rms uncertainty on pmDE
39- 42 F4.2 arcsec/yr pm ?=- Total proper motion
44- 47 F4.2 arcsec/yr e_pm ? rms uncertainty on pm
49 A1 --- l_Dist [~] Limit flag on Dist
50- 52 I3 pc Dist ? Estimated distance
54 I1 pc e_Dist ? rms uncertainty on Dist
55 A1 --- u_Dist [ab] Tentative distance (1)
57 A1 --- l_Vtan [~] Limit flag on Vtan
58- 60 I3 km/s Vtan ? Tangential velocity
62- 63 I2 km/s e_Vtan ? rms uncertainty on Vtan
64 A1 --- u_Vtan [ab] Tentative velocity (1)
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Note (1): Notes as follows:
a = Estimates use MJ∼9.74mag, which is the value measured for the sdM6.5
dwarf LHS 1166, the closest match in spectral type with an available
parallax (van Altena et al., 1995, Cat. I/238).
b = Estimates, which assume a tentative classification of sdM0, are
discussed in Sect. 4.1.
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Byte-by-byte Description of file: table9.dat
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Bytes Format Units Label Explanations
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1 A1 --- Type [abc] Normal (a) or peculiar L-type star (1)
3- 28 A26 --- Name Discovery name
29 A1 --- n_Name [bcdef] Note on Name (3)
31- 32 I2 --- r_Name Discovery reference
34 A1 --- l_Jmag Limit flag on Jmag
35- 39 F5.2 mag Jmag J magnitude (2)
41- 44 F4.2 mag e_Jmag ? rms uncertainty on Jmag
45 A1 --- n_Jmag [a] Note on Jmag (3)
47 A1 --- l_Ksmag Limit flag on Ksmag
48- 52 F5.2 mag Ksmag Ks magnitude (2)
54- 57 F4.2 mag e_Ksmag ? rms uncertainty on Ksmag
58 A1 --- n_Ksmag [a] Note on Ksmag (3)
60 A1 --- l_J-Ks Limit flag on J-Ks
61- 64 F4.2 mag J-Ks J-Ks colour index
66- 69 F4.2 mag e_J-Ks ? rms uncertainty on J-Ks
70 A1 --- n_J-Ks [a] Note on J-Ks (3)
72- 76 F5.2 mag W1mag ?=- W1 (3.4um) magnitude
78- 81 F4.2 mag e_W1mag ? rms uncertainty on W1mag
83- 87 F5.2 mag W2mag ?=- W2 (4.6um) magnitude
89- 92 F4.2 mag e_W2mag ? rms uncertainty on W2mag
94 A1 --- l_W3mag Limit flag on W3mag
95- 99 F5.2 mag W3mag ?=- W3 (12um) magnitude
101-104 F4.2 mag e_W3mag ? rms uncertainty on W3mag
106-114 A9 --- SpT Optical spectral type (L2 to L8)
116-117 I2 --- r_SpT ? Reference for OType (4)
119-129 A11 --- SpTi Near-IR spectral type
131-132 I2 --- r_SpTi ? Reference for NIRType (4)
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Note (1): Type as follows:
a = Normal (?) L dwarfs
b = Peculiar L dwarfs for which peculiarities are due to low gravity
c = Peculiar L dwarfs for which peculiarities are not obviously due
to low gravity
Note (2): Photometry is from the 2MASS All-Sky Point Source Catalog or
2MASS Reject Table unless otherwise noted.
Note (3): Notes as follows:
a = J-band magnitude is from Mohanty et al. (2007ApJ...657.1064M 2007ApJ...657.1064M) and
K-band magnitude is from Chauvin et al. (2004A&A...425L..29C 2004A&A...425L..29C)
(Burgasser et al., 2005AJ....129.2849B 2005AJ....129.2849B)
c = JHKs photometry is from UKIDSS.
d = Low-gravity features noted by Kirkpatrick et al. (2008,
Cat. J/ApJ/689/1295). See also McLean et al. (2003ApJ...596..561M 2003ApJ...596..561M)
e = Object is a spectrum variable (Mace et al., 2013, Cat. J/ApJS/205/6)
f = Low-gravity features first noted in this article
Note (4): References as follows:
1 = Rebolo et al., 1998Sci...282.1309R 1998Sci...282.1309R
2 = Kirkpatrick et al., 1999ApJ...519..802K 1999ApJ...519..802K
3 = Kirkpatrick et al., 2000AJ....120..447K 2000AJ....120..447K
4 = Geballe et al., 2002ApJ...564..466G 2002ApJ...564..466G
5 = Dahn et al., 2002AJ....124.1170D 2002AJ....124.1170D
6 = Gizis et al., 2003AJ....125.3302G 2003AJ....125.3302G, Cat. J/AJ/125/3302
7 = Cruz et al., 2003AJ....126.2421C 2003AJ....126.2421C, Cat. J/AJ/126/2421
8 = Knapp et al., 2004AJ....127.3553K 2004AJ....127.3553K, Cat. J/AJ/127/3553
9 = Chauvin et al., 2005A&A...438L..29C 2005A&A...438L..29C
10 = Chiu et al., 2006AJ....131.2722C 2006AJ....131.2722C, Cat. J/AJ/131/2722
11 = Liebert & Gizis, 2006PASP..118..659L 2006PASP..118..659L, cat. J/PASP/118/659
12 = Cruz et al., 2007AJ....133..439C 2007AJ....133..439C, Cat. J/AJ/133/439
13 = Kirkpatrick et al., 2008ApJ...689.1295K 2008ApJ...689.1295K, Cat. J/ApJ/689/1295
14 = Reid et al., 2008AJ....136.1290R 2008AJ....136.1290R, Cat. J/AJ/136/1290
15 = Lodieu et al., 2008MNRAS.383.1385L 2008MNRAS.383.1385L
16 = Looper et al., 2008ApJ...685.1183L 2008ApJ...685.1183L
17 = Kirkpatrick et al., 2011ApJS..197...19K 2011ApJS..197...19K, Cat. J/ApJS/197/19
18 = Geissler et al., 2011ApJ...732...56G 2011ApJ...732...56G
19 = Gizis et al., 2012AJ....144...94G 2012AJ....144...94G
20 = Mace et al., 2013ApJS..205....6M 2013ApJS..205....6M, Cat. J/ApJS/205/6
21 = this article
22 = Hawley et al., 2002AJ....123.3409H 2002AJ....123.3409H, Cat. J/AJ/123/3409
23 = Cruz, Kirkpatrick, & Burgasser, 2009AJ....137.3345C 2009AJ....137.3345C
24 = Kirkpatrick et al., 2010ApJS..190..100K 2010ApJS..190..100K, Cat. J/ApJS/190/100
25 = Faherty et al., 2013AJ....145....2F 2013AJ....145....2F
26 = Chauvin et al., 2004A&A...425L..29C 2004A&A...425L..29C
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 05-Jan-2015