J/AJ/155/265 The solar neighborhood. XLIV. RECONS discoveries (Henry+, 2018)
The solar neighborhood XLIV: RECONS discoveries within 10 parsecs.
Henry T.J., Jao W.-C., Winters J.G., Dieterich S.B., Finch C.T.,
Ianna P.A., Riedel A.R., Silverstein M.L., Subasavage J.P., Vrijmoet E.H.
<Astron. J., 155, 265-265 (2018)>
=2018AJ....155..265H 2018AJ....155..265H (SIMBAD/NED BibCode)
ADC_Keywords: Stars, nearby ; Stars, double and multiple ; Stars, dwarfs ;
Photometry, UBVRIJKLMNH ; Parallaxes, trigonometric ;
Proper motions ; Spectral types
Keywords: astrometry - solar neighborhood - stars: distances - stars: low-mass -
stars: statistics - surveys
Abstract:
We describe the 44 systems discovered to be within 10 pc of the Sun by
the RECONS team, primarily via the long-term astrometry program at the
CTIO/SMARTS 0.9 m that began in 1999. The systems-including 41 with
red dwarf primaries, 2 white dwarfs, and 1 brown dwarf-have trigonometric
parallaxes greater than 100 mas, with errors of 0.4-2.4 mas in all but
one case. We provide updated astrometric, photometric (VRIJHK magnitudes),
spectral type, and multiplicity information here. Among these are 14
systems that are new entries to the 10 pc sample, including the first
parallaxes for 9 systems and new values for 5 systems that had previous
parallaxes with errors greater than 10 mas or values placing them beyond
10 pc. We also provide new data for 22 systems known to lie within 10 pc
and 9 systems reported to be closer than that horizon but for which new
parallaxes place them further away, bringing the total to 75 systems.
The 44 systems added by RECONS comprise one of every 7 systems known
within 10 pc. We illustrate the evolution of the 10 pc sample from the
191 systems known when the final Yale Parallax Catalog was published
in 1995 to the 317 systems known today. Even so close to the Sun,
additional discoveries of white, red, and brown dwarfs are possible,
both as primaries and secondaries, although we estimate that at least
90% of the stellar systems closer than 10 pc have now been identified.
Description:
The REsearch Consortium On Nearby Stars (RECONS, www.recons.org) was
established in 1994 to discover "missing" members of the solar neighborhood
and to characterize the complete sample of nearby star systems and their
environs.
A single camera, equipped with a Tektronics 2048x2046 CCD having pixels
401 mas square on the sky, has been used at the 0.9 m since 1999. The
nearby systems described here were observed for 2.0-18.4 years (median
coverage 13.1 years) in an effort to reach parallax precisions of 3 mas
or better, corresponding to distances accurate to 3% at 10 pc. Both
astrometry and photometry observations (the latter discussed in
Section 3.2) utilize only the central quarter of the CCD (6.8'x6.8' field
of view), primarily to minimize astrometric distortions. For the
astrometric observations, targets are observed through one of three
VRI filters. A modicum of additional photometry was acquired at the
SOAR 4.1 m and CTIO/SMARTS 1.0 m as part of other RECONS programs (in
particular, see Dieterich et al. 2014, J/AJ/147/94 and Winters et al.
2011, J/AJ/141/21 for details).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 194 76 Astrometric results
table2.dat 111 5 Photocentric orbits for nearby systems
table3.dat 139 76 Photometric and spectroscopic results
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See also:
I/174 : Yale Trigonometric Parallaxes Preliminary (van Altena+ 1991)
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
J/AJ/129/413 : New high proper motion stars (-90<DE< -47) (Subasavage+, 2005)
J/AJ/130/1658 : New high proper motion stars (-47<δ<00)
(Subasavage+, 2005)
J/AJ/132/866 : New M dwarfs in solar neighborhood (Riaz+, 2006)
J/ApJ/643/402 : Cool white dwarfs in the solar neighborhood (Kawka+, 2006)
J/AJ/133/2898 : New proper-motion stars (-90<DE< -47) (Finch+, 2007)
J/AJ/134/252 : New nearby white dwarf systems (Subasavage+, 2007)
J/AJ/136/1290 : Ultracool dwarfs from the 2MASS (Reid+, 2008)
J/AJ/141/21 : CCD distance estimates of SCR targets (Winters+, 2011)
J/AJ/142/10 : New proper motion stars 0.40"/yr>pm≥0.18"/yr (Boyd+, 2011)
J/AJ/142/92 : New proper motion stars with pm≥0.18"/yr (Boyd+, 2011)
J/AJ/144/64 : Solar neighborhood. XXVIII. Substellar companions
(Dieterich+, 2012)
J/ApJ/752/56 : BDKP. III. Parallaxes for 70 ultracool dwarfs (Faherty+, 2012)
J/ApJS/201/19 : Hawaii Infrared Parallax Program. I. (Dupuy+, 2012)
J/A+A/556/A15 : Effective temperature scale of M dwarfs (Rajpurohit+, 2013)
J/AJ/147/85 : Solar neighborhood. XXXIII. 45 M dwarfs (Riedel+, 2014)
J/AJ/147/94 : Solar neighborhood. XXXII. L and M dwarfs (Dieterich+, 2014)
J/ApJ/784/156 : Parallaxes for 1507 nearby mid-to-late M dwarfs
(Dittmann+, 2014)
J/AJ/149/5 : Solar neighborhood. XXXV. Distances to M dwarfs
(Winters+, 2015)
J/AJ/150/6 : Solar neighborhood. XXXVI. VRI variability of M dwarfs
(Hosey+, 2015)
J/ApJ/810/158 : M,L,T dwarfs fundamental parameters and SEDs
(Filippazzo+, 2015)
J/AJ/151/160 : 1103 parallaxes and proper motions from URAT (Finch+, 2016)
J/AJ/152/24 : Trigonometric parallaxes of 134 low-mass stars
(Weinberger+, 2016)
J/AJ/152/141 : Solar neighborhood. XXXVII. RVs for M dwarfs (Benedict+, 2016)
J/AJ/153/14 : Solar neighborhood XXXVIII. Nearby M dwarf systems
(Winters+, 2017)
J/AJ/154/32 : Solar neighborhood. XXXIX. Nearby white dwarfs
(Subasavage+, 2017)
J/AJ/154/124 : M dwarfs-long-term photometric variability (Clements+, 2017)
J/AJ/154/151 : The solar neighborhood .XXXX. New young stars (Bartlett+, 2017)
J/AJ/154/191 : The solar neighborhood. XLII. New nearby subdwarfs (Jao+, 2017)
www.recons.org : The REsearch Consortium On Nearby Stars (RECONS) website
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1 A1 --- Type [ABC] System type code (G1)
3- 18 A16 --- Name System identifier
20- 32 A13 --- OName Other identifier
34- 35 I2 h RAh Hour of Right Ascension (J2000)
37- 38 I2 min RAm Minute of Right Ascension (J2000)
40- 44 F5.2 s RAs Second of Right Ascension (J2000)
46 A1 --- DE- Sign of the Declination (J2000)
47- 48 I2 deg DEd Degree of Declination (J2000)
50- 51 I2 arcmin DEm Arcminute of Declination (J2000)
53- 56 F4.1 arcsec DEs Arcsecond of Declination (J2000)
58- 62 A5 --- Disc Discovery reference code (1)
64- 67 F4.2 yr TimeD [2.03/9.31]? Duration of astrometric series
at Disc
69 A1 --- Filter [VRI] Filter used
71- 72 I2 --- Nsea [3/19]? Number of seasons
73 A1 --- n_Nsea [cs] Note on Nsea (2)
75- 77 I3 --- Nfrm [31/397] Number of frames
79- 85 F7.2 yr Date1 [1999.62/2014.92]? First date of coverage span
87- 93 F7.2 yr Date2 [2014.29/2018.15]? Last date of coverage span
95- 99 F5.2 yr Nyr [2/18.43] Number of years of coverage
101-102 I2 --- Nref [5/19] Number of reference stars used in
the reductions
104-109 F6.2 mas plxrel [82.48/767.99] Measured relative trigonometric
parallax
111-114 F4.2 mas e_plxrel [0.4/3.89] Uncertainty in plxrel
116-119 F4.2 mas plxcor [0.23/2.76] Correction to absolute parallax
121-124 F4.2 mas e_plxcor [0.03/1.57] Uncertainty in plxcor
126-131 F6.2 mas plxabs [82.76/769.66] Absolute parallax
133-136 F4.2 mas e_plxabs [0.48/3.89] Uncertainty in plxabs
138-143 F6.1 mas/yr pm [67.9/5203.2] Relative proper motion
145-147 F3.1 mas/yr e_pm [0.1/2.2] Uncertainty in pm
149-153 F5.1 deg theta [4.3/356.9] Position angle of pm; North through
East
155-158 F4.2 deg e_theta [0.01/0.86] Uncertainty in theta
160-164 F5.1 km/s Vtan [3.1/162.9] Derived tangential velocity
166-194 A29 --- Notes Additional brief notes (1)
--------------------------------------------------------------------------------
Note (1): Reference code as follows:
And11 = Andrei et al. (2011AJ....141...54A 2011AJ....141...54A);
Bar17 = Bartlett et al. (2017, J/AJ/154/151);
Cos05 = Costa et al. (2005AJ....130..337C 2005AJ....130..337C);
Cos06 = Costa et al. (2006AJ....132.1234C 2006AJ....132.1234C);
Die14 = Dieterich et al. (2014, J/AJ/147/94);
Dit14 = Dittmann et al. (2014, J/ApJ/784/156);
Dup12 = Dupuy & Liu (2012, J/ApJS/201/19);
Fah12 = Faherty et al. (2012, J/ApJ/752/56);
Fin16 = Finch & Zacharias (2016, J/AJ/151/160);
HIP97 = ESA (1997, Cat. I/239);
Hen06 = Henry et al. (2006AJ....132.2360H 2006AJ....132.2360H);
Hen97 = Henry et al. (1997AJ....114..388H 1997AJ....114..388H);
Jao05 = Jao et al. (2005AJ....129.1954J 2005AJ....129.1954J);
Rie11 = Riedel et al. (2011AJ....142..104R 2011AJ....142..104R);
Sah14 = Sahlmann et al. (2014A&A...565A..20S 2014A&A...565A..20S);
Sub09 = Subasavage et al. (2009AJ....137.4547S 2009AJ....137.4547S);
Sub17 = Subasavage et al. (2017, J/AJ/154/32).
Tin96 = Tinney (1996MNRAS.281..644T 1996MNRAS.281..644T);
Wei16 = Weinberger et al. (2016, J/AJ/152/24);
YPC95 = van Altena et al. (1995, Cat. I/174).
Note (2): Note as follows:
c = Continuous coverage;
s = Scattered coverage in at least some seasons.
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Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 16 A16 --- Name System identifier
18- 21 F4.1 --- Norb [1.2/31.8] Number of orbits covered by
the current data set
23- 26 F4.2 yr Porb1 [0.17/6.74] Orbital period in years
28 A1 --- lePorb1 [<] Limit flag on e_Porb1
29- 32 F4.2 yr e_Porb1 [0.01/0.39] Uncertainty in Porb1
34- 39 F6.1 d Porb2 [62/2460.4] Orbital period in days
41- 45 F5.1 d e_Porb2 [0.1/143.5] Uncertainty in Porb2
47- 50 F4.1 mas a [5/18.7] Photocentric semimajor axis
52- 54 F3.1 mas e_a [0.7/7.8] Uncertainty in a
56- 59 F4.2 --- e [0.02/0.61] Eccentricity
61- 64 F4.2 --- e_e [0.05/0.94] Uncertainty in e
66- 70 F5.1 deg i [89.5/149.3] Inclination
72- 75 F4.1 deg e_i [1/25.1] Uncertainty in i
77- 81 F5.1 deg omega [93.3/352] Longitude of periastron ω
83- 87 F5.1 deg e_omega [1.4/112.5] Uncertainty in omega
89- 93 F5.1 deg Omega [21.5/211.6] Argument of periastron Ω
95- 98 F4.1 deg e_Omega [6.8/46.9] Uncertainty in Omega
100-106 F7.2 yr T0 [2018.2/2024.04] Epoch of periastron T0
108-111 F4.2 yr e_T0 [0.06/1.6] Uncertainty in T0
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- Type System type code (G1)
3- 18 A16 --- Name System identifier
20- 21 I2 h RAh Hour of Right Ascension (J2000)
23- 24 I2 min RAm Minute of Right Ascension (J2000)
26- 30 F5.2 s RAs Second of Right Ascension (J2000)
32 A1 --- DE- Sign of the Declination (J2000)
33- 34 I2 deg DEd Degree of Declination (J2000)
36- 37 I2 arcmin DEm Arcminute of Declination (J2000)
39- 42 F4.1 arcsec DEs Arcsecond of Declination (J2000)
44- 48 F5.2 mag Vmag [9.82/22.97]? Apparent Johnson V band magnitude
50 A1 --- f_Vmag [J] Flag on Vmag (1)
52- 56 F5.2 mag Rmag [8.7/19.91] Apparent Cousins R band magnitude
58 A1 --- f_Rmag [J] Flag on Rmag (1)
60- 64 F5.2 mag Imag [7.32/17.45] Apparent Cousins I band magnitude
66 A1 --- f_Imag [J] Flag on Imag (1)
68- 70 I3 --- Nobs [44/777] Number of observations (2)
72 A1 --- Filt [VRI] Filter used for astrometry and
variability
74- 77 F4.1 mmag sigma [6.4/36.5]? Variability in Filt
79- 83 F5.2 mag Jmag [5.36/13.34] 2MASS apparent J band magnitude
85 A1 --- f_Jmag [J] Flag on Jmag (1)
87- 91 F5.2 mag Hmag [4.84/13.48] 2MASS apparent H band magnitude
93 A1 --- f_Hmag [J] Flag on Hmag (1)
95- 99 F5.2 mag Ksmag [4.38/13.74] 2MASS apparent Ks band magnitude
101 A1 --- f_Ksmag [J] Flag on Ksmag (1)
103-106 A4 --- SpType Spectral type
108-110 A3 --- Lum Luminosity class (3)
112-116 A5 --- r_SpType Reference code for SpType (4)
118-139 A22 --- Note Additional note (5)
--------------------------------------------------------------------------------
Note (1): Flag as follows:
J = More than one object is included in the measurement value, i.e., a close
multiple system.
Note (2): Where the three digits indicate the numbers of nights in which
magnitudes were measured in the VRI bands, respectively. Note that fainter
objects sometimes have limited V measurements.
Note (3): Luminosity class as follows:
J = When the light of two or more close components was merged in the
spectrum used for typing;
pec = Type for the white dwarf WD 0038-226 is DQpec from Giammichele et al.
(2012ApJS..199...29G 2012ApJS..199...29G). DQpec means peculiar DQ star;
pms = Pre-main sequence star.
Note (4): Reference code as follows:
* = This paper;
Bur15 = Burgasser et al. (2015AJ....149..104B 2015AJ....149..104B);
Fil15 = Filippazzo et al. (2015, J/ApJ/810/158);
Giz02 = Gizis (2002ApJ...575..484G 2002ApJ...575..484G);
Ham04 = Hambaryan et al. (2004A&A...415..265H 2004A&A...415..265H);
Ken07 = Kendall et al. (2007MNRAS.374..445K 2007MNRAS.374..445K);
Per14 = Perez Garrido et al. (2014A&A...567A...6P 2014A&A...567A...6P);
Raj13 = Rajpurohit et al. (2013, J/A+A/556/A15);
Rei08 = Reid et al. (2008, J/AJ/136/1290);
Sch10 = Schmidt et al. (2010AJ....139.1045S 2010AJ....139.1045S);
Sub17 = Subasavage et al. (2017, J/AJ/154/32);
estim = For the stars that have no spectroscopic observations, we estimate the
type based on the star's V-K color and give "estim" as the reference.
Note (5): Reference code in Note as follows:
Cos06 = Costa et al. (2006AJ....132.1234C 2006AJ....132.1234C).
--------------------------------------------------------------------------------
Global notes:
Note (G1): System type code as follows:
A = New 10 parsec members - 44 systems;
B = Important additional 10 parsec members - 22 systems;
C = Not 10 parsec members - 9 systems.
--------------------------------------------------------------------------------
History:
From electronic version of the journal
References:
Henry et al., Paper I 1994AJ....108.1437H 1994AJ....108.1437H
Kirkpatrick et al., Paper II 1995AJ....109..797K 1995AJ....109..797K
Simons et al., Paper III 1996AJ....112.2238S 1996AJ....112.2238S
Henry et al., Paper IV 1997AJ....114..388H 1997AJ....114..388H
Patterson et al., Paper V 1998AJ....115.1648P 1998AJ....115.1648P
Henry et al., Paper VI 2002AJ....123.2002H 2002AJ....123.2002H
Jao et al., Paper VII 2003AJ....125..332J 2003AJ....125..332J
Hambly et al., Paper VIII 2004AJ....128..437H 2004AJ....128..437H
Golimowski et al., Paper IX 2004AJ....128.1733G 2004AJ....128.1733G
Henry et al., Paper X 2004AJ....128.2460H 2004AJ....128.2460H
Deacon et al., Paper XI 2005AJ....129..409D 2005AJ....129..409D
Subasavage et al., Paper XII 2005AJ....129..413S 2005AJ....129..413S, Cat. J/AJ/129/413
Jao et al., Paper XIII 2005AJ....129.1954J 2005AJ....129.1954J
Costa et al., Paper XIV 2005AJ....130..337C 2005AJ....130..337C
Subasavage et al., Paper XV 2005AJ....130.1658S 2005AJ....130.1658S, Cat. J/AJ/130/1658
Costa et al., Paper XVI 2006AJ....132.1234C 2006AJ....132.1234C
Henry et al., Paper XVII 2006AJ....132.2360H 2006AJ....132.2360H
Finch et al., Paper XVIII 2007AJ....133.2898F 2007AJ....133.2898F, Cat. J/AJ/133/2898
Subasavage et al., Paper XIX 2007AJ....134..252S 2007AJ....134..252S, Cat. J/AJ/134/252
Subasavage et al., Paper XX 2008AJ....136..899S 2008AJ....136..899S
Subasavage et al., Paper XXI 2009AJ....137.4547S 2009AJ....137.4547S
Riedel et al., Paper XXII 2010AJ....140..897R 2010AJ....140..897R
Winters et al., Paper XXIII 2011AJ....141...21W 2011AJ....141...21W, Cat. J/AJ/141/21
Jao et al., Paper XXIV 2011AJ....141..117J 2011AJ....141..117J
Boyd et al., Paper XXV 2011AJ....142...10B 2011AJ....142...10B, Cat. J/AJ/142/10
Riedel et al., Paper XXVI 2011AJ....142..104R 2011AJ....142..104R
Boyd et al., Paper XXVII 2011AJ....142...92B 2011AJ....142...92B, Cat. J/AJ/142/92
Dieterich et al., Paper XXVIII 2012AJ....144...64D 2012AJ....144...64D, Cat. J/AJ/144/64
Cantrell et al., Paper XXIX 2013AJ....146...99C 2013AJ....146...99C
Mamajek et al., Paper XXX 2013AJ....146..154M 2013AJ....146..154M
Jao et al., Paper XXXI 2014AJ....147...21J 2014AJ....147...21J
Dieterich et al., Paper XXXII 2014AJ....147...94D 2014AJ....147...94D, Cat. J/AJ/147/94
Riedel et al., Paper XXXIII 2014AJ....147...85R 2014AJ....147...85R, Cat. J/AJ/147/85
Lurie et al., Paper XXXIV 2014AJ....148...91L 2014AJ....148...91L
Winters et al., Paper XXXV 2015AJ....149....5W 2015AJ....149....5W, Cat. J/AJ/149/5
Hosey et al., Paper XXXVI 2015AJ....150....6H 2015AJ....150....6H, Cat. J/AJ/150/6
Benedict et al., Paper XXXVII 2016AJ....152..141B 2016AJ....152..141B, Cat. J/AJ/152/141
Winters et al., Paper XXXVIII 2017AJ....153...14W 2017AJ....153...14W, Cat. J/AJ/153/14
Subasavage et al., Paper XXXIX 2017AJ....154...32S 2017AJ....154...32S, Cat. J/AJ/154/32
Bartlett et al., Paper XXXX 2017AJ....154..151B 2017AJ....154..151B, Cat. J/AJ/154/151
Clements et al., Paper XLI 2017AJ....154..124C 2017AJ....154..124C, Cat. J/AJ/154/124
Jao et al., Paper XLII 2017AJ....154..191J 2017AJ....154..191J, Cat. J/AJ/154/191
Riedel et al., Paper XLIII 2018AJ....156...49R 2018AJ....156...49R, Cat. J/AJ/156/49
Henry et al., Paper XLIV 2018AJ....155..265H 2018AJ....155..265H, This catalog
Winters et al., Paper XLV 2019AJ....157..216W 2019AJ....157..216W, Cat. J/AJ/157/216
Vrijmoet et al., Paper XLVI 2020AJ....160..215V 2020AJ....160..215V, Cat. J/AJ/160/215
Dieterich et al., Paper XLVII 2021AJ....161..172D 2021AJ....161..172D, Cat. J/AJ/161/172
Paredes et al., Paper XLVIII 2021AJ....162..176P 2021AJ....162..176P, Cat. J/AJ/162/176
Vrijmoet et al., Paper XLIX 2022AJ....163..178V 2022AJ....163..178V, Cat. J/AJ/163/178
Hubbard-James et al., Paper L 2022AJ....164..174H 2022AJ....164..174H
Kar et al., Paper LI 2024AJ....167..196K 2024AJ....167..196K, Cat. J/AJ/167/196
(End) Prepared by [AAS], Tiphaine Pouvreau [CDS] 08-Jan-2019