J/ApJ/656/770 Mid-IR spectrum of star-forming galaxies (Smith+, 2007) ================================================================================ The mid-infrared spectrum of star-forming galaxies: global properties of polycyclic aromatic hydrocarbon emission. Smith J.D.T., Draine B.T., Dale D.A., Moustakas J., Kennicutt R.C.Jr, Helou G., Armus L., Roussel H., Sheth K., Bendo G.J., Buckalew B.A., Calzetti D., Engelbracht C.W., Gordon K.D., Hollenbach D.J., Li A., Malhotra S., Murphy E.J., Walter F. =2007ApJ...656..770S ================================================================================ ADC_Keywords: Galaxies, spectra ; Galaxies, IR Keywords: galaxies: active - galaxies: ISM - infrared: galaxies - techniques: spectroscopic Abstract: We present a sample of low-resolution 5-38um Spitzer IRS spectra of the inner few square kiloparsecs of 59 nearby galaxies spanning a large range of star formation properties. A robust method for decomposing mid-infrared galaxy spectra is described and used to explore the behavior of PAH emission and the prevalence of silicate dust extinction. Description: SINGS includes uniform 5-38um spectral mapping with the Infrared Spectrograph (IRS). Full observational details regarding the SINGS spectral mapping program can be found in Kennicutt et al. (2003PASP..115..928K). File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table1.dat 85 59 Sample parameter table4.dat 242 59 Recovered dust feature and line strengths table8.dat 43 802 Noise-free MIR template spectra -------------------------------------------------------------------------------- Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 8 A8 --- Galaxy Galaxy name 10- 16 A7 --- Type Nuclear type based on optical classification (1) 18- 21 F4.1 Mpc Dist Adopted distance (2) 23- 24 I2 h RAh Center of extraction aperture right ascension (J2000) 26- 27 I2 min RAm Center of extraction aperture right ascension (J2000) 29- 33 F5.2 s RAs Center of extraction aperture right ascension (J2000) 35 A1 --- DE- Center of extraction aperture declination sign (J2000) 36- 37 I2 deg DEd Center of extraction aperture declination (J2000) 39- 40 I2 arcmin DEm Center of extraction aperture declination (J2000) 42- 45 F4.1 arcsec DEs Center of extraction aperture declination (J2000) 47- 50 F4.1 arcsec Size1 Extraction aperture size 51 A1 --- --- [x] 52- 55 F4.1 arcsec Size2 Extraction aperture size 57- 61 F5.2 kpc+2 Area Physical extraction aperture area 63- 68 F6.1 deg PA [-180/180] Extraction aperture position angle east of north of first (slit aligned) axis of extraction rectangle 70- 74 F5.1 10+8solLum LTIR Total infrared luminosity (3-1100um) within the extraction aperture 76- 79 F4.2 --- fTIR Fraction of global TIR contained in the aperture 81- 85 F5.2 ---- LIR/LB ?=- Total infrared-to-B-band luminosity ratio in the aperture -------------------------------------------------------------------------------- Note (1): Based on the optical classification methodology of Kauffmann et al. (2003MNRAS.346.1055K) applied to the compiled spectroscopic sample of Moustakas et al. (2007ApJ...660L..31M). See also Dale et al. (2006, Cat. ). Note (2): Adopted distances from the literature compilation and local flow model of Masters et al. (2008AJ....135.1738M). -------------------------------------------------------------------------------- Byte-by-byte Description of file: table4.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 8 A8 --- Galaxy Galaxy name 10- 17 E8.2 W/m2/sr F6.2 The 6.2um dust feature intensity 19- 26 E8.2 W/m2/sr e_F6.2 ? Uncertainty in F6.2 (1) 28- 35 E8.2 W/m2/sr F7.7 The 7.7um Complex dust feature intensity 37- 44 E8.2 W/m2/sr e_F7.7 Uncertainty in F7.7 46- 53 E8.2 W/m2/sr F8.3 The 8.3um dust feature intensity 55- 62 E8.2 W/m2/sr e_F8.3 ? Uncertainty in F8.3 (1) 64- 71 E8.2 W/m2/sr F8.6 The 8.6um dust feature intensity 73- 80 E8.2 W/m2/sr e_F8.6 ? Uncertainty in F8.6 (1) 82- 89 E8.2 W/m2/sr F11.3 The 11.3um Complex dust feature intensity 91- 98 E8.2 W/m2/sr e_F11.3 Uncertainty in 11.3 100-107 E8.2 W/m2/sr F12.0 The 12.0um dust feature intensity 109-116 E8.2 W/m2/sr e_F12.0 ? Uncertainty in F12.0 (1) 118-125 E8.2 W/m2/sr F12.6 The 12.6um Complex dust feature intensity 127-134 E8.2 W/m2/sr e_F12.6 Uncertainty in F12.6 136-143 E8.2 W/m2/sr F13.6 The 13.6um dust feature intensity 145-152 E8.2 W/m2/sr e_F13.6 ? Uncertainty in F13.6 (1) 154-161 E8.2 W/m2/sr F16.4 The 16.4um dust feature intensity 163-170 E8.2 W/m2/sr e_F16.4 ? Uncertainty in F16.4 (1) 172-179 E8.2 W/m2/sr F17.0 The 17um Complex dust feature intensity 181-188 E8.2 W/m2/sr e_F17.0 Uncertainty in F17.0 190-197 E8.2 W/m2/sr F17.4 The 17.4um dust feature intensity 199-206 E8.2 W/m2/sr e_F17.4 ? Uncertainty in F17.4 (1) 208-215 E8.2 W/m2/sr NeII The [NeII] line intensity (12.813{mu}m) 217-224 E8.2 W/m2/sr e_NeII ? Uncertainty in NeII (1) 226-233 E8.2 W/m2/sr NeIII The [NeIII] line intensity (15.555{mu}m) 235-242 E8.2 W/m2/sr e_NeIII Uncertainty in NeIII -------------------------------------------------------------------------------- Note (1): Blank uncertainties represent NaN values. -------------------------------------------------------------------------------- Byte-by-byte Description of file: table8.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 8 F8.4 um Lambda Wavelength 10- 15 F6.4 --- Temp1 Template 1 relative f_nu_ flux density 17- 22 F6.4 --- Temp2 Template 2 relative f_nu_ flux density 24- 29 F6.4 --- Temp3 Template 3 relative f_nu_ flux density 31- 36 F6.4 --- Temp4 Template 4 relative f_nu_ flux density 38- 43 F6.4 --- LumWei Luminosity-weighted relative f_nu_ flux density -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Greg Schwarz [AAS], Patricia Vannier [CDS] 10-Dec-2008