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J/MNRAS/471/770   Parameters and IR excesses of Gaia DR1 stars (McDonald+, 2017)

Fundamental parameters and infrared excesses of Tycho-Gaia stars. McDonald I., Zijlstra A. A., Watson R.A. <Mon. Not. R. Astron. Soc. 471, 770 (2017)> =2017MNRAS.471..770M (SIMBAD/NED BibCode)
ADC_Keywords: Stars, nearby ; Energy distributions ; Infrared sources Keywords: circumstellar matter - stars: fundamental parameters - Hertzsprung-Russell and colour-magnitude diagrams - stars: mass-loss - solar neighbourhood - infrared: stars Abstract: Effective temperatures and luminosities are calculated for 1,475,921 Tycho-2 and 107,145 Hipparcos stars, based on distances from Gaia Data Release 1. Parameters are derived by comparing multi-wavelength archival photometry to BT-Settl model atmospheres. The 1-sigma uncertainties for the Tycho-2 and Hipparcos stars are ±137K and ±125K in temperature and ±35 per cent and ±19 per cent in luminosity. The luminosity uncertainty is dominated by that of the Gaia parallax. Evidence for infrared excess between 4.6 and 25 microns is found for 4256 stars, of which 1883 are strong candidates. These include asymptotic giant branch (AGB) stars, Cepheids, Herbig Ae/Be stars, young stellar objects, and other sources. We briefly demonstrate the capabilities of this dataset by exploring local interstellar extinction, the onset of dust production in AGB stars, the age and metallicity gradients of the solar neighbourhood and structure within the Gould Belt. We close by discussing the potential impact of future Gaia data releases. Description: Spectral energy distribution fits are presented for stars from the Tycho-Gaia Astrometric Solution (TGAS) from Gaia Data Release 1. Hipparcos-Gaia stars are presented in a separate table. Effective temperatures, bolometric luminosities, and infrared excesses are presented (alongside other parameters pertinent to the model fits), plus the source photometry used. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 594 1476005 Tycho-Gaia astrometric solution table2.dat 805 107110 Hipparcos-Gaia astrometric solution table3.dat 304 4255 Stars with infrared excess
See also: I/337 : Gaia DR1 (Gaia Collaboration, 2016) J/MNRAS/427/343 : Infrared excesses of Hipparcos stars (McDonald+, 2012) J/ApJ/833/119 : Distances of Gaia DR1 TGAS sources (Astraatmadja+, 2016) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 12 A12 --- TYC Tycho designation 14- 23 F10.6 deg RAdeg Right ascension (J2000.0) 25- 34 F10.6 deg DEdeg Declination (J2000.0) 36- 45 F10.6 deg GLON Galactic longitude 47- 56 F10.6 deg GLAT Galactic latitude 58- 65 F8.3 pc D Distance (1) 67- 71 F5.3 --- dplx Fractional uncertainty in parallax 73- 79 F7.3 mag AV Optical extinction from Planck (2) 81- 86 F6.3 mag e_AV Uncertainty in the optical extinction 88- 92 I5 K Teff Effective temperature 94- 98 I5 K e_Teff Uncertainty in effective temperature 100-108 F9.3 Lsun L Bolometric luminosity 110-114 F5.3 Lsun e_L/L Fractional uncertainty in luminosity 116-122 F7.3 Rsun Rad Stellar radius 124-129 F6.3 [cm2/s] logg Surface gravity for assumed mass 131-135 I5 K T(AV) Temperature, assuming full extinction of AV 137-147 F11.3 Lsun L(AV) Luminosity, assuming full extinction of AV 149-153 I5 K T(ABJ) Temperature, with Lutz-Kelker correction (3) 155-163 F9.3 Lsun L(ABJ) Luminosity, with Lutz-Kelker correction (3) 165-170 F6.3 --- Q Quality of the SED fit 172-173 I2 --- N(SED) Number of points in the full SED fit 175-176 I2 --- N(Opt) Number of optical data points in the SED fit 178 I1 --- N(NIR) Number of near-IR data points in the SED fit 180 I1 --- N(MIR) Number of mid-IR data points in the SED fit 182-187 F6.3 --- R(SED) Average displacement of model from observation 189-194 F6.3 --- R(Opt) Average displacement of optical data 196-201 F6.3 --- R(NIR) Average displacement of near-IR data 203-209 F7.3 --- R(MIR) Average displacement of mid-IR data 211-217 F7.3 --- X(MIR) Mid-infrared excess 219-225 F7.3 --- X'(MIR) Mid-infrared excess, worst-fit point removed 227-232 F6.3 --- S(MIR) (Uncalibrated) significance of excess 234-241 F8.4 --- Rmax Observed/modelled flux for worst-fit point 243-252 F10.6 --- f(XS) Fraction of luminosity reprocessed into the IR 254-257 F4.1 um l(XS) Wavelength of peak infrared excess 259-264 F6.3 --- Fom(BT) Ratio of observed to modelled flux in Tycho B 266-271 F6.3 --- Fom(B) Ratio of observed to modelled flux in Johnson B 273-278 F6.3 --- Fom(g) Ratio of observed to modelled flux in Sloan g 280-285 F6.3 --- Fom(VT) Ratio of observed to modelled flux in Tycho V 287-292 F6.3 --- Fom(V) Ratio of observed to modelled flux in Johnson V 294-299 F6.3 --- Fom(r) Ratio of observed to modelled flux in Sloan r 301-306 F6.3 --- Fom(i) Ratio of observed to modelled flux in Sloan i 308-313 F6.3 --- Fom(I) Ratio of observed to modelled flux in Gunn I 315-320 F6.3 --- Fom(z) Ratio of observed to modelled flux in Sloan z 322-327 F6.3 --- Fom(J) Ratio of observed to modelled flux in J 329-334 F6.3 --- Fom(H) Ratio of observed to modelled flux in H 336-341 F6.3 --- Fom(Ks) Ratio of observed to modelled flux in Ks 343-348 F6.3 --- Fom(W1) Ratio of observed to modelled flux in WISE 1 350-355 F6.3 --- Fom(W2) Ratio of observed to modelled flux in WISE 2 357-362 F6.3 --- Fom(A9) Ratio of observed to modelled flux in Akari 9 364-369 F6.3 --- Fom(W3) Ratio of observed to modelled flux in WISE 3 371-376 F6.3 --- Fom(I12) Ratio of observed to modelled flux in IRAS 12 378-384 F7.3 --- Fom(A18) Ratio of observed to modelled flux in Akari 18 386-392 F7.3 --- Fom(W4) Ratio of observed to modelled flux in WISE 4 394-400 F7.3 --- Fom(I25) Ratio of observed to modelled flux in IRAS 25 402-410 F9.3 mJy F(BT) ?=0 Adopted flux in Tycho B 412-419 F8.3 mJy F(B) ?=0 Adopted flux in Johnson B 421-428 F8.3 mJy F(g) ?=0 Adopted flux in Sloan g 430-438 F9.3 mJy F(VT) ?=0 Adopted flux in Tycho V 440-447 F8.3 mJy F(V) ?=0 Adopted flux in Johnson V 449-457 F9.3 mJy F(r) ?=0 Adopted flux in Sloan r 459-467 F9.3 mJy F(i) ?=0 Adopted flux in Sloan i 469-475 F7.3 mJy F(I) ?=0 Adopted flux in Gunn I 477-482 F6.3 mJy F(z) ?=0 Adopted flux in Sloan z 484-493 F10.3 mJy F(J) ?=0 Adopted flux in J 495-504 F10.3 mJy F(H) ?=0 Adopted flux in H 506-515 F10.3 mJy F(Ks) ?=0 Adopted flux in Ks 517-525 F9.3 mJy F(W1) ?=0 Adopted flux in WISE 1 (3.4um) 527-533 F7.3 mJy F(W2) ?=0 Adopted flux in WISE 2 (4.6um) 535-543 F9.3 mJy F(A9) ?=0 Adopted flux in Akari S9W (9um) 545-553 F9.3 mJy F(W3) ?=0 Adopted flux in WISE 3 (12um) 555-564 F10.3 mJy F(I12) ?=0 Adopted flux in IRAS (12um) 566-574 F9.3 mJy F(A18) ?=0 Adopted flux in Akari L18W (18um) 576-583 F8.3 mJy F(W4) ?=0 Adopted flux in WISE 4 (22um) 585-594 F10.3 mJy F(I25) ?=0 Adopted flux in IRAS (25um)
Note (1): Distance comes from strict inversion of the Gaia parallax. For a discussion on parallax and the Lutz-Kelker bias, see the supplementary appendices to the paper. Note (2): Line-of-sight extinction, not just the component towards the target. Note (3): These temperatures and luminosities are valid for the distance implied by the Lutz-Kelker-corrected data of Astraatmadja and Bailer-Jones (2016, Cat. J/ApJ/833/119). These do not necessarily provide a better fit to the data than a naive distance inversion, as discussed in the paper's appendices.
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP Hipparcos identifier 8- 17 F10.6 deg RAdeg Right ascension (J2000.0) 19- 28 F10.6 deg DEdeg Declination (J2000.0) 30- 39 F10.6 deg GLON Galactic longitude 41- 50 F10.6 deg GLAT Galactic latitude 52- 59 F8.3 pc D Distance (1) 61- 65 F5.3 --- dplx Fractional uncertainty in parallax 67- 73 F7.3 mag AV Optical extinction from Planck (2) 75- 80 F6.3 mag e_AV Uncertainty in the optical extinction 82- 86 I5 K Teff Effective temperature 88- 92 I5 K e_Teff Uncertainty in effective temperature 94-103 F10.3 Lsun L Bolometric luminosity 105-109 F5.3 Lsun e_L/L Fractional uncertainty in luminosity 111-119 F9.3 Rsun Rad Stellar radius 121-126 F6.3 [cm/s2] log(g) Surface gravity for assumed mass 128-132 I5 K T(AV) Temperature, assuming full extinction of Av 134-144 F11.3 Lsun L(Av) Luminosity, assuming full extinction of Av 146-150 I5 K T(ABJ) Temperature, with Lutz-Kelker correction (3) 152-160 F9.3 Lsun L(ABJ) Luminosity, with Lutz-Kelker correction (3) 162-167 F6.3 --- Q Quality of the SED fit 169-170 I2 --- N(SED) Number of points in the full SED fit 172-173 I2 --- N(Opt) Number of optical data points in the SED fit 175 I1 --- N(NIR) Number of near-IR data points in the SED fit 177 I1 --- N(MIR) Number of mid-IR data points in the SED fit 179-184 F6.3 --- R(SED) Average displacement of model from observation 186-191 F6.3 --- R(Opt) Average displacement of optical data 193-198 F6.3 --- R(NIR) Average displacement of near-IR data 200-206 F7.3 --- R(MIR) Average displacement of mid-IR data 208-214 F7.3 --- X(MIR) Mid-infrared excess 216-223 F8.3 --- X'(MIR) Mid-infrared excess, worst-fit point removed 225-231 F7.3 --- S(MIR) (Uncalibrated) significance of excess 233-239 F7.3 --- Rmax Observed/modelled flux for worst-fit point 241-249 F9.4 Lsun L(XS) Luminosity of the infrared excess 251-258 F8.6 --- f(XS) Fraction of luminosity reprocessed into the IR 260-263 F4.1 um l(XS) Wavelength of peak infrared excess 265 A1 --- G/H Source of parallax (Gaia+HIP / Hipparcos only) 267-272 F6.3 --- Fom(U) Ratio of observed to modelled flux in Johnson U 274-279 F6.3 --- Fom(u) Ratio of observed to modelled flux in Sloan u 281-286 F6.3 --- Fom(BT) Ratio of observed to modelled flux in Tycho B 288-293 F6.3 --- Fom(B) Ratio of observed to modelled flux in Johnson B 295-300 F6.3 --- Fom(g) Ratio of observed to modelled flux in Sloan g 302-307 F6.3 --- Fom(Hp) Ratio of observed to modelled flux in Hipparcos 309-314 F6.3 --- Fom(VT) Ratio of observed to modelled flux in Tycho V 316-321 F6.3 --- Fom(V) Ratio of observed to modelled flux in Johnson V 323-328 F6.3 --- Fom(r) Ratio of observed to modelled flux in Sloan r 330-335 F6.3 --- Fom(i) Ratio of observed to modelled flux in Sloan i 337-342 F6.3 --- Fom(I) Ratio of observed to modelled flux in Gunn I 344-349 F6.3 --- Fom(z) Ratio of observed to modelled flux in Sloan z 351-356 F6.3 --- Fom(J) Ratio of observed to modelled flux in J 358-363 F6.3 --- Fom(H) Ratio of observed to modelled flux in H 365-370 F6.3 --- Fom(Ks) Ratio of observed to modelled flux in Ks 372-377 F6.3 --- Fom(W1) Ratio of observed to modelled flux in WISE 1 379-384 F6.3 --- Fom(L) Ratio of observed to modelled flux in L (3.6) 386-391 F6.3 --- Fom(W2) Ratio of observed to modelled flux in WISE 2 393-398 F6.3 --- Fom(MA) Ratio of observed to modelled flux in MSX A 400-405 F6.3 --- Fom(A9) Ratio of observed to modelled flux in Akari 9 407-412 F6.3 --- Fom(W3) Ratio of observed to modelled flux in WISE 3 414-420 F7.3 --- Fom(I12) Ratio of observed to modelled flux in IRAS 12 422-428 F7.3 --- Fom(MC) Ratio of observed to modelled flux in MSX C 430-436 F7.3 --- Fom(MD) Ratio of observed to modelled flux in MSX D 438-444 F7.3 --- Fom(A18) Ratio of observed to modelled flux in Akari 18 446-452 F7.3 --- Fom(ME) Ratio of observed to modelled flux in MSX E 454-460 F7.3 --- Fom(W4) Ratio of observed to modelled flux in WISE 4 462-470 F9.3 --- Fom(I25) Ratio of observed to modelled flux in IRAS 25 472-480 F9.3 mJy F(U) ?=0 Adopted flux in Johnson U 482-491 F10.3 mJy F(u) ?=0 Adopted flux in Sloan u 493-502 F10.3 mJy F(BT) ?=0 Adopted flux in Tycho B 504-513 F10.3 mJy F(B) ?=0 Adopted flux in Johnson B 515-524 F10.3 mJy F(g) ?=0 Adopted flux in Sloan g 526-536 F11.3 mJy F(Hp) ?=0 Adopted flux in Hipparcos 538-548 F11.3 mJy F(VT) ?=0 Adopted flux in Tycho V 550-560 F11.3 mJy F(V) ?=0 Adopted flux in Johnson V 562-572 F11.3 mJy F(r) ?=0 Adopted flux in Sloan r 574-584 F11.3 mJy F(i) ?=0 Adopted flux in Sloan i 586-596 F11.3 mJy F(I) ?=0 Adopted flux in Gunn I 598-608 F11.3 mJy F(z) ?=0 Adopted flux in Sloan z 610-621 F12.3 mJy F(J) ?=0 Adopted flux in J 623-634 F12.3 mJy F(H) ?=0 Adopted flux in H 636-647 F12.3 mJy F(Ks) ?=0 Adopted flux in Ks 649-660 F12.3 mJy F(W1) ?=0 Adopted flux in WISE 1 (3.4um) 662-673 F12.3 mJy F(L) ?=0 Adopted flux in L (3.6um) 675-685 F11.3 mJy F(W2) ?=0 Adopted flux in WISE 2 (4.6um) 687-697 F11.3 mJy F(MA) ?=0 Adopted flux in MSX A (8.28um) 699-709 F11.3 mJy F(A9) ?=0 Adopted flux in Akari S9W (9um) 711-721 F11.3 mJy F(W3) ?=0 Adopted flux in WISE 3 (12um) 723-733 F11.3 mJy F(I12) ?=0 Adopted flux in IRAS (12um) 735-745 F11.3 mJy F(MC) ?=0 Adopted flux in MSX C (12.13um) 747-757 F11.3 mJy F(MD) ?=0 Adopted flux in MSX D (14.65um) 759-769 F11.3 mJy F(A18) ?=0 Adopted flux in Akari L18W (18um) 771-781 F11.3 mJy F(ME) ?=0 Adopted flux in MSX E (21.34um) 783-793 F11.3 mJy F(W4) ?=0 Adopted flux in WISE 4 (22um) 795-805 F11.3 mJy F(I25) ?=0 Adopted flux in IRAS (25um)
Note (1): Distance comes from strict inversion of the Gaia parallax. For a discussion on parallax and the Lutz-Kelker bias, see the supplementary appendices to the paper. Note (2): Line-of-sight extinction, not just the component towards the target. Note (3): These temperatures and luminosities are valid for the distance implied by the Lutz-Kelker-corrected data of Astraatmadja and Bailer-Jones (2016, Cat. J/ApJ/833/119). These do not necessarily provide a better fit to the data than a naive distance inversion, as discussed in the paper's appendices.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 16 A16 --- ID Tycho or Hipparcos designator 18- 27 F10.6 deg RAdeg Right ascension (J2000.0) 29- 38 F10.6 deg DEdeg Declination (J2000.0) 40- 49 F10.6 deg GLON Galactic longitude 51- 60 F10.6 deg GLAT Galactic latitude 62- 69 F8.3 pc D Distance (1) 71- 75 F5.3 --- dplx Fractional uncertainty in parallax 77- 83 F7.3 mag AV Optical extinction from Planck (2) 85- 90 F6.3 mag e_AV Uncertainty in the optical extinction 92- 96 I5 K Teff Effective temperature 98-102 I5 K e_Teff Uncertainty in effective temperature 104-114 F11.3 Lsun L Bolometric luminosity 116-120 F5.3 Lsun e_L/L Fractional uncertainty in luminosity 122-128 F7.3 Rsun Rad Stellar radius 130-135 F6.3 [cm/s2] log(g) Surface gravity for assumed mass 137-141 I5 K T(AV) Temperature, assuming full extinction of Av 143-153 F11.3 Lsun L(AV) Luminosity, assuming full extinction of Av 155-161 F7.3 --- Q Quality of the SED fit 163-169 F7.3 --- X(MIR) Mid-infrared excess 171-177 F7.3 --- X'(MIR) Mid-infrared excess, worst-fit point removed 179-185 F7.3 --- S(MIR) (Uncalibrated) significance of excess 187-206 A20 --- Name Simbad name 208-232 A25 --- AltName Simbad alternative name 234-238 A5 --- Otype Simbad object type (keyword:otype) 240-285 A46 --- Otypes Simbad object type (keyword:otypes) 287-302 A16 --- SpType Simbad spectral classification 304 I1 --- Qual [0/6] Quality points (3)
Note (1): Distance comes from strict inversion of the Gaia parallax. For a discussion on parallax and the Lutz-Kelker bias, see the supplementary appendices to the paper. Note (2): Line-of-sight extinction, not just the component towards the target. Note (3): more than three points are needed to show a high-quality detection of infrared excess.
Acknowledgements: Iain McDonald, iain.mcdonald-2(at)manchester.ac.uk
(End) Patricia Vannier [CDS] 17-Aug-2017
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