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J/ApJ/658/1264   IR-excess sources in GLIMPSE and MSX   (Uzpen+, 2007)

The frequency of mid-infrared excess sources in Galactic surveys. Uzpen B., Kobulnicky H.A., Monson A.J., Pierce M.J., Clemens D.P., Backman D.E., Meade M.R., Babler B.L., Indebetouw R., Whitney B.A., Watson C., Wolfire M.G., Benjamin R.A., Bracker S., Bania T.M., Cohen M., Cyganowski C.J., Devine K.E., Heitsch F., Jackson J.M., Mathis J.S., Mercer E.P., Povich M.S., Rho J., Robitaille T.P., Sewilo M., Stolovy S.R., Watson D.F., Wolff M.J., Churchwell E. <Astrophys. J., 658, 1264-1288 (2007)> =2007ApJ...658.1264U
ADC_Keywords: Infrared sources ; Photometry, infrared ; Photometry, millimetric/submm Keywords: circumstellar matter - planetary systems Abstract: We have identified 230 Tycho-2 Spectral Catalog stars that exhibit 8um mid-IR extraphotospheric excesses in the MSX and Spitzer GLIMPSE surveys. Of these, 183 are either OB stars earlier than B8 in which the excess plausibly arises from a thermal bremsstrahlung component or evolved stars in which the excess may be explained by an atmospheric dust component. The remaining 47 stars have spectral classifications B8 or later and appear to be main-sequence or late pre-main-sequence objects harboring circumstellar disks. Six of the 47 stars exhibit multiple signatures characteristic of pre-main-sequence circumstellar disks, including emission lines, near-IR K-band excesses, and X-ray emission. Approximately one-third of the remaining 41 sources have emission lines suggesting relative youth. We modeled the excesses in 26 stars having two or more measurements in excess of the expected photospheres as single-component blackbodies. Description: We obtained optical spectroscopy of a small subset of 38 stars from the GLIMPSE sample at declinations higher than -20° with the WIRO-Spec instrument on the Wyoming Infrared Observatory (WIRO) on the nights of 2005 September 17-19. We also obtained optical spectroscopy of an additional subsample of 27 stars from the GLIMPSE sample using the WIRO-Longslit spectrograph on the night of 2005 November 20. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 148 12 Revised spectral/luminosity classes table2.dat 120 28 Photometric parameters for main-sequence stars B8 or later with Mid-IR excesses from GLIMPSE table3.dat 120 139 Photometric parameters for main-sequence stars earlier then B8 and post-main-sequence stars Mid-IR excesses from GLIMPSE table4.dat 121 19 Photometric parameters for main-sequence stars B8 or later with mid-IR excesses from MSX table5.dat 121 44 Photometric parameters for main-sequence stars earlier than B8 with mid-IR excesses from MSX table6.dat 48 28 24um photometry for source in table2 table7.dat 148 47 Derived parameters for mid-IR excess sources later than B8 in GLIMPSE and MSX
See also: II/293 : GLIMPSE Source Catalog (I + II + 3D) (IPAC 2008) III/231 : The Tycho-2 Spectral Type Catalog (Wright+, 2003) V/114 : MSX6C Infrared Point Source Catalog (Egan+ 2003) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 17 A17 --- Gname GLIMPSE/MSX identification (GLLL.llll+BB.bbbb) 19- 28 A10 --- Sp.T Tycho spectral catalog classification (III/231) 30- 38 A9 --- Sp.rev Revised classification from WIRO observations 40-148 A109 --- Notes Classification Basis
Byte-by-byte Description of file: table[23].dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequential star number 5- 21 A17 --- Gname GLIMPSE identification (Cat. II/293) 23- 31 A9 --- SpT MK spectral type 33- 37 F5.2 mag Vmag V magnitude 39- 43 F5.2 mag Bmag B magnitude 45- 49 F5.2 mag Jmag ?=- 2MASS J magnitude 51- 54 F4.2 mag e_Jmag ?=- rms uncertainty on Jmag 56- 60 F5.2 mag Hmag ?=- 2MASS H magnitude 62- 65 F4.2 mag e_Hmag ?=- rms uncertainty on Hmag 67- 71 F5.2 mag Kmag 2MASS K magnitude 73- 76 F4.2 mag e_Kmag rms uncertainty on Kmag 78- 82 F5.2 mag [3.6] ?=- IRAC 3.6um magnitude (1) 84- 87 F4.2 mag e_[3.6] ?=- rms uncertainty on [3.6] 89- 93 F5.2 mag [4.5] ?=- IRAC 4.5um magnitude (1) 95- 98 F4.2 mag e_[4.5] ?=- rms uncertainty on [4.5] 100-104 F5.2 mag [5.8] IRAC 5.8um magnitude 106-109 F4.2 mag e_[5.8] rms uncertainty on [5.8] 111-115 F5.2 mag [8.0] IRAC 8.0um magnitude 117-120 F4.2 mag e_[8.0] rms uncertainty on [8.0]
Note (1): No data when saturated band not nondetection.
Byte-by-byte Description of file: table[45].dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequential star number 5- 21 A17 --- Gname MSX6C identification (Cat. V/114) 23- 32 A10 --- SpT MK spectral type 33- 37 F5.2 mag Vmag V magnitude 39- 43 F5.2 mag Bmag B magnitude 45- 49 F5.2 mag Jmag 2MASS J magnitude 51- 54 F4.2 mag e_Jmag rms uncertainty on Jmag 56- 60 F5.2 mag Hmag 2MASS H magnitude 62- 65 F4.2 mag e_Hmag rms uncertainty on Hmag 67- 71 F5.2 mag Kmag 2MASS K magnitude 73- 76 F4.2 mag e_Kmag rms uncertainty on Kmag 78- 82 F5.2 mag Amag MSX A magnitude (6.8-10.8um) 84- 87 F4.2 % e_Amag rms percent uncertainty on Amag 89- 92 F4.2 mag Cmag ?=- MSX C magnitude (11.1-13.2um) 94- 98 F5.2 % e_Cmag ?=- rms percent uncertainty on Cmag 100-103 F4.2 mag Dmag ?=- MSX D magnitude (13.5-15.9um) 105-109 F5.2 % e_Dmag ?=- rms percent uncertainty on Dmag 111-115 F5.2 mag Emag ?=- MSX E magnitude (18.2-25.1um) 117-121 F5.2 % e_Emag ?=- rms percent uncertainty on Emag
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequential star number 5- 21 A17 --- Gname GLIMPSE identification (Cat. II/293) 23- 31 A9 --- SpT MK spectral type 33 A1 --- l_F24um Limit flag on [24] 34- 38 F5.1 Jy F24um ? IRAC 24um flux 40- 43 F4.2 mag [24] ? IRAC 24um magnitude 45- 48 F4.1 Jy e_F24um ? rms uncertainty on F24um
Byte-by-byte Description of file: table7.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequential star number 5- 21 A17 --- Gname GLIMPSE/MSX name (GLLL.llll+BB.bbbb) 22 A1 --- n_Gname [abcd] Note on Gname (1) 24- 32 A9 --- SpT MK spectral type 34- 39 I6 --- HD ? HD number 41- 44 F4.2 mag E(K-[8]) K-[8.0] colour excess 46- 50 F5.2 --- Signi Significane of excess, E(K-[8.0])/e_[8.0] 52- 55 I4 pc Dist Spectrophotometric distance 57- 59 I3 pc E_Dist Error on Dist (upper limit) 61- 63 I3 pc e_Dist Error on Dist (lower limit) 65- 68 F4.2 mag AV Visual extinction 70- 73 F4.2 mag E_AV Error on AV (upper limit) 75- 78 F4.2 mag e_AV Error on AV (lower limit) 80- 82 I3 K T ? Best-fit blackbody model temperature for excess 84- 85 I2 K E_T ? Error on T (upper limit) 87- 88 I2 K e_T ? Error on T (lower limit) 90- 96 F7.5 solLum LIR ? Best-fit infrared luminosity 98-104 F7.5 solLum E_LIR ? Error on LIR (upper limit) 106-112 F7.5 solLum e_LIR ? Error on LIR (lower limit) 114-118 I5 K Teff Effective temperature for the adopted Kurucz (1993, Kurucz CD-ROM 13) model 120-124 F5.2 [cm/s2] logg Gravity surface for the adopted Kurucz model 126-128 F3.1 arcsec R Radial distance between optical and IR source positions 130-148 A19 --- Com Comments (2)
Note (1): Notes as follows: a = The model fit is marginal and model flux is below [24] b = There are no data available for λ>8um c = This MSX star is shown to have a false A-band or [8.0] excess; see text d = This star is a known Be star with the excess arising from a circumstellar shell Note (2): Comments use the abbreviations:: G = GLIMPSE source M = MSX source e = emission-line star v = variable star n = star in nebula m = multiple stars (from SIMBAD database) o = Oudmaijer et al. (1992A&AS...96..625O) star p = previous mid-IR spectral work x = ROSAT X-ray source c = Clarke et al. (2005, Cat. J/MNRAS/363/1111) star g = group I designation
Nomenclature notes: In table 7, name G295.3770-02.6386 corrected into G295.3770-02.6380, as in table 4 and MSX catalog. History: From electronic version of the journal
(End) Patricia Vannier [CDS] 11-Apr-2010
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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