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J/AJ/149/5    Solar neighborhood. XXXV. Distances to M dwarfs   (Winters+, 2015)

The solar neighborhood. XXXV. Distances to 1404 M dwarf systems within 25 pc in the southern sky. Winters J.G., Hambly N.C., Jao W.-C., Dieterich S.B., Lurie J.C., Henry T.J., Hosey A.D., Slatten K.J., Boyd M.R., Ianna P.A., Riedel A.R., Subasavage J.P., Finch C.T., Bartlett J.L. <Astron. J., 149, 5 (2015)> =2015AJ....149....5W
ADC_Keywords: Stars, dwarfs ; Stars, M-type ; Parallaxes, trigonometric ; Photometry, UBVRI ; Photometry, photographic ; Stars, distances ; Photometry, infrared ; Proper motions Keywords: parallaxes - solar neighborhood - stars: distances - stars: low-mass - stars: statistics - techniques: photometric Abstract: We present trigonometric, photometric, and photographic distances to 1748 southern (δ≤O°) M dwarf systems with µ≥0.18''/yr, of which 1404 are believed to lie within 25pc of the Sun. The stars have 6.67≤VJ≤21.38 and 3.50≤(VJ-KS)≤9.27, covering the entire M dwarf spectral sequence from M0.0 V through M9.5 V. This sample therefore provides a comprehensive snapshot of our current knowledge of the southern sky for the nearest M dwarfs that dominate the stellar population of the Galaxy. Roughly one-third of the 1748 systems, each of which has an M dwarf primary, have published high quality parallaxes, including 179 from the REsearch Consortium On Nearby Stars astrometry program. For the remaining systems, we offer photometric distance estimates that have well-calibrated errors. The bulk of these (∼700) are based on new VJRKCIKC photometry acquired at the CTIO/SMARTS 0.9m telescope, while the remaining 500 primaries have photographic plate distance estimates calculated using SuperCOSMOS BJR59FIIVN photometry. Confirmed and candidate subdwarfs in the sample have been identified, and a census of companions is included. Description: We have developed a list of 1748 southern (δ≤0°) stellar systems containing M dwarf primaries. Plate magnitudes from SuperCOSMOS are given in Table 1 for all but a few systems and are rounded to the nearest hundredth magnitude. The wavelength ranges for the BJ, R59F, and IIVN filters are 3950-5400Å, 5900-6900Å, and 7150-9000Å, respectively (Morgan, 1995ASPC...84..137M, p137). We have measured Johnson-Kron-Cousins VJRKCIKC photometry (the central wavelengths for the VJ(old), VJ(new), RKC, and IKC filters are 5438, 5475, 6425, and 8075Å, respectively. See Jao et al., 2011AJ....141..117J, for a discussion of the nearly identical VJ(old) and VJ(new) filters) for 799 of the systems presented here as a part of our astrometry/photometry program, primarily at the Cerro Tololo Inter-American Observatory (CTIO)/SMARTS 0.9m, with a few measurements from the CTIO/SMARTS 1.0m (see Jao et al., 2005AJ....129.1954J, Henry et al., 2006AJ....132.2360H for details on the astrometry; see Winters et al. 2011, cat. J/AJ/141/21, for details on the photometry). The observations were made between 1999 and 2013. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 160 1748 Observed data for southern red dwarf systems table2.dat 98 1748 Derived data for southern red dwarf systems refs.dat 66 74 References
See also: II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) I/174 : Yale Trigonometric Parallaxes Preliminary (van Altena+ 1991) J/AJ/147/94 : Solar neighborhood. XXXII. L and M dwarfs (Dieterich+, 2014) J/AJ/144/64 : Solar neighborhood. XXVIII. Substellar companions (Dieterich+, 2012) J/AJ/142/92 : New proper motion stars with pm≥0.18''/yr (Boyd+, 2011) J/AJ/142/10 : New proper motion stars 0.40''/yr>pm≥0.18''/yr (Boyd+, 2011) J/AJ/141/21 : CCD distance estimates of SCR targets (Winters+, 2011) J/AJ/134/252 : New nearby white dwarf systems (Subasavage+, 2007) J/AJ/133/2898 : New proper-motion stars (-90<DE< -47) (Finch+, 2007) J/AJ/130/1658 : New high proper motion stars (-47<DE< -00) (Subasavage+, 2005) J/AJ/129/413 : New high proper motion stars (-90<DE< -47) (Subasavage+, 2005) http://surveys.roe.ac.uk/ssa/ : SuperCOSMOS Science Archive http://www.recons.org/ : Research Consortium on Nearby Stars Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 14 A14 --- Name Name of the M dwarf primary (G1) 16 I1 --- Nc Number of known components in the system 18 I1 --- Np ? Indicates how many of the components are included in the photometry 20- 21 I2 h RAh Hour of Right Ascension (J2000) 23- 24 I2 min RAm Minute of Right Ascension (J2000) 26- 29 F4.1 s RAs Second of Right Ascension (J2000) 31 A1 --- DE- Sign of the Declination (J2000) 32- 33 I2 deg DEd Degree of Declination (J2000) 35- 36 I2 arcmin DEm Arcminute of Declination (J2000) 38- 39 I2 arcsec DEs Arcsecond of Declination (J2000) 41- 45 F5.3 arcsec/yr pm Total proper motion magnitude 47- 51 F5.1 deg pmPA Proper motion position angle 53- 54 I2 --- r_pm Reference for pm (in refs.dat file) (1) 56- 62 F7.2 mas plx ? Weighted mean of published trigonometric parallaxes (see Section 3.4) 64- 65 A2 --- f_plx Note on plx (2) 69- 72 F4.2 mas e_plx ? Error in plx 74 I1 --- o_plx ? Number of measurements for plx 76- 88 A13 --- r_plx Reference for plx (in ref.dat file) 90- 94 F5.2 mag Bmag ? SuperCOSMOS BJ plate magnitude (3) 95 A1 --- f_Bmag [J] Magnitude blended due to a close companion 97-101 F5.2 mag Fmag ? SuperCOSMOS R59F plate magnitude (3) 102 A1 --- f_Fmag [J] Magnitude blended due to a close companion 104-108 F5.2 mag Nmag ? SuperCOSMOS IIVN plate magnitude (3) 109 A1 --- f_Nmag [J] Magnitude blended due to a close companion 111-115 F5.2 mag Vmag ? The Johnson V band magnitude (4) 116 A1 --- f_Vmag [J] Magnitude blended due to a close companion 118-122 F5.2 mag Rmag ? The Kron-Cousins R band magnitude (4) 123 A1 --- f_Rmag [J] Magnitude blended due to a close companion 125-129 F5.2 mag Imag ? The Kron-Cousins I band magnitude (4) 130 A1 --- f_Imag [J] Magnitude blended due to a close companion 132 I1 --- o_Imag ? Number of VRI nights from REsearch Consortium On Nearby Stars (RECONS; http://www.recons.org/) 134-135 I2 --- r_Imag ? Reference for RECONS VRI magnitudes 136 A1 --- New [U] Indicates updated RECONS VRI values (5) 138-142 F5.2 mag Jmag 2MASS J band magnitude 143-144 A2 --- f_Jmag Blended or inaccurate Jmag (6) 146-150 F5.2 mag Hmag 2MASS H band magnitude 151-152 A2 --- f_Hmag Blended or inaccurate Hmag (6) 154-158 F5.2 mag Kmag 2MASS Ks band magnitude 159-160 A2 --- f_Kmag Blended or inaccurate Kmag (6)
Note (1): All proper motions are from SuperCOSMOS, except where noted. Some of the proper motion values from the SuperCOSMOS Sky Survey for SCR objects presented here differ slightly from those in the original discovery papers. For the new values, a more comprehensive method has been used that provides multiple measurements of proper motion between various plate pairs, while before only a single value was available that incorporated all plates into the solution simultaneously. The proper motions provided here are those that yield consistent values among multiple determinations and are preferred. Note (2): Flag on parallax defined as follows: a = The weighted mean parallax includes the parallax of both the primary and the secondary components; b = The HIP parallax is markedly different from that published in the Yale Parallax Catalog (YPC; Also called The General Catalogue of Trigonometric Stellar Parallaxes, Fourth Edition, van Altena 1995, cat. I/174) and has an error of ∼45mas. Note (3): The wavelength ranges for the BJ, R59F, and IIVN filters are 3950-5400Å, 5900-6900Å, and 7150-9000Å, respectively (Morgan, 1995ASPC...84..137M, p137). See Section 3.1 for more details about the BJR59FIIVN plate photometry. The plate R59F magnitude is the second, more recent R epoch measurement of the two available in the SuperCOSMOS Sky Survey. Note (4): Primarily the VJ, RKC, IKC magnitudes measured by REsearch Consortium On Nearby Stars (RECONS; http://www.recons.org/) group at Cerro Tololo Inter-American Observatory (CTIO) and the number of observations, or VRI from a trusted source. The central wavelengths for the VJ(old), VJ(new), RKC, and IKC filters are 5438, 5475, 6425, and 8075Å, respectively. See Jao et al., 2011AJ....141..117J, for a discussion of the nearly identical VJ(old) and VJ(new) filters. See Section 3.2 for more details about the VJRKCIKC CCD photometry. Note (5): u = We have previously published photometry for this object, but have since then acquired more data and updated the value. Note (6): Flag on 2MASS magnitude defined as follows: J = Indicates that light from a close companion has resulted in blended photometry; c = 2MASS magnitude error greater than 0.05mag.
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 14 A14 --- Name2 Name of the M dwarf primary (G1) 16- 17 I2 h RAh Hour of Right Ascension (J2000) 19- 20 I2 min RAm Minute of Right Ascension (J2000) 22- 25 F4.1 s RAs Second of Right Ascension (J2000) 27 A1 --- DE- Sign of the Declination (J2000) 28- 29 I2 deg DEd Degree of Declination (J2000) 31- 32 I2 arcmin DEm Arcminute of Declination (J2000) 34- 35 I2 arcsec DEs Arcsecond of Declination (J2000) 37- 41 F5.1 pc dplt ? The plate derived distance (7) 43- 45 A3 --- f_dplt Distance closer or further than estimated (8) 47- 50 F4.1 pc e_dplt ? Total error in dplt 52- 53 I2 --- o_dplt Number of relations used in dplt 55- 59 F5.1 pc dccd ? The CCD derived distance (9) 61- 63 A3 --- f_dccd Distance closer or further than estimated (8) 65- 68 F4.1 pc e_dccd ? Total error in dccd 70- 71 I2 --- o_dccd ? Number of relations used in dccd 73- 77 F5.1 pc dtrig ? Distance from weighted mean of published parallaxes (see Section 3.4 for details) 79 A1 --- f_dtrig [a] Indicates the weighted mean distance includes that of both the primary and the secondary components 81- 85 F5.1 pc e_dtrig ? Weighted mean error in dtrig 87 I1 --- o_dtrig ? Number of parallaxes used in dtrig 89- 93 F5.1 pc dbest [2.7/214] Most reliable distance 94 A1 --- f_dbest Distance closer or further than estimated (8) 96- 98 A3 --- n_dbest Most reliable distance type (ccd, plt, trg)
Note (7): Calculated by combining SuperCOSMOS BRI photometry with 2MASS infrared photometry via a suite of 15 color-MK relations using BRIJHK, as described in Hambly et al. (2004AJ....128..437H). See Secion 4.1 for additional details. Note (8): The flags on distance are defined as follows: c = Confirmed or candidate subdwarf (distance typically closer than estimated); f = Distance based on blended photometry (distance typically further than estimated). Note (9): Determined using a method similar to that used for the plate derived distances and as described by Henry et al. (2004AJ....128..437H). The difference is that we use more accurate CCD VRI magnitudes obtained at Cerro Tololo Inter-American Observatory (CTIO) instead of plate magnitudes from SuperCOSMOS to determine the suite of color-MK relations. See Secion 4.2 for more details.
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Ref Reference identifier 4- 22 A19 --- BibCode Bibliographic code 24- 44 A21 --- Aut Author's name 46- 66 A21 --- Cat Catalog in VizieR database
Global notes: Note (G1): The table is divided into the 1404 systems within 25pc at the top and the 344 systems beyond 25pc on the bottom. We refer to any collection of stars and their companion brown dwarfs and/or exoplanets as a system, including single M dwarfs not currently known to have any companions. Systems that contain a white dwarf component have been omitted, as the white dwarf was initially the brighter primary component.
History: From electronic version of the journal References: Henry et al., Paper I 1994AJ....108.1437H Kirkpatrick et al., Paper II 1995AJ....109..797K Simons et al., Paper III 1996AJ....112.2238S Henry et al., Paper IV 1997AJ....114..388H Patterson et al., Paper V 1998AJ....115.1648P Henry et al., Paper VI 2002AJ....123.2002H Jao et al., Paper VII 2003AJ....125..332J Hambly et al., Paper VIII 2004AJ....128..437H Golimowski et al., Paper IX 2004AJ....128.1733G Henry et al., Paper X 2004AJ....128.2460H Deacon et al., Paper XI 2005AJ....129..409D Subasavage et al., Paper XII 2005AJ....129..413S, Cat. J/AJ/129/413 Jao et al., Paper XIII 2005AJ....129.1954J Costa et al., Paper XIV 2005AJ....130..337C Subasavage et al., Paper XV 2005AJ....130.1658S, Cat. J/AJ/130/1658 Costa et al., Paper XVI 2006AJ....132.1234C Henry et al., Paper XVII 2006AJ....132.2360H Finch et al., Paper XVIII 2007AJ....133.2898F, Cat. J/AJ/133/2898 Subasavage et al., Paper XIX 2007AJ....134..252S, Cat. J/AJ/134/252 Subasavage et al., Paper XX 2008AJ....136..899S Subasavage et al., Paper XXI 2009AJ....137.4547S Riedel et al., Paper XXII 2010AJ....140..897R Winters et al., Paper XXIII 2011AJ....141...21W, Cat. J/AJ/141/21 Jao et al., Paper XXIV 2011AJ....141..117J Boyd et al., Paper XXV 2011AJ....142...10B, Cat. J/AJ/142/10 Riedel et al., Paper XXVI 2011AJ....142..104R Boyd et al., Paper XXVII 2011AJ....142...92B, Cat. J/AJ/142/92 Dieterich et al., Paper XXVIII 2012AJ....144...64D, Cat. J/AJ/144/64 Cantrell et al., Paper XXIX 2013AJ....146...99C Mamajek et al., Paper XXX 2013AJ....146..154M Jao et al., Paper XXXI 2014AJ....147...21J Dieterich et al., Paper XXXII 2014AJ....147...94D, Cat. J/AJ/147/94 Riedel et al., Paper XXXIII 2014AJ....147...85R Lurie et al., Paper XXXIV 2014AJ....148...91L Hosey et al., Paper XXXVI 2015AJ....150....6H, Cat. J/AJ/150/6 Benedict et al., Paper XXXVII 2016AJ....152..141B, Cat. J/AJ/152/141 Winters et al., Paper XXXVIII 2017AJ....153...14W, Cat. J/AJ/153/14 Subasavage et al., Paper XXXIX 2017AJ....154...32S, Cat. J/AJ/154/32
(End) Greg Schwarz [AAS], Sylvain Guehenneux [CDS] 29-Jan-2015
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