J/ApJS/184/230 Spitzer high-resolution MIR spectral atlas (Bernard-Salas+, 2009) ================================================================================ A spitzer high-resolution mid-infrared spectral atlas of starburst galaxies. Bernard-Salas J., Spoon H.W.W., Charmandaris V., Lebouteiller V., Farrah D., Devost D., Brandl B.R., Wu Y., Armus L., Hao L., Sloan G.C., Weedman D., Houck J.R. =2009ApJS..184..230B ================================================================================ ADC_Keywords: Galaxies, IR ; Spectra, infrared ; Active gal. nuclei ; Atlases Mission_Name: Spitzer Keywords: galaxies: starburst - infrared: galaxies - ISM: lines and bands Abstract: We present an atlas of Spitzer/IRS high-resolution (R~600) 10-37um spectra for 24 well known starburst galaxies. The spectra are dominated by fine-structure lines, molecular hydrogen lines, and emission bands of polycyclic aromatic hydrocarbons (PAHs). Six out of the eight objects with a known active galactic nucleus (AGN) component show emission of the high excitation [NeV] line. This line is also seen in one other object (NGC 4194) with, a priori, no known AGN component. In addition to strong PAH emission features in this wavelength range (11.3, 12.7, 16.4um), the spectra reveal other weak hydrocarbon features at 10.6, 13.5, 14.2um, and a previously unreported emission feature at 10.75um. An unidentified absorption feature at 13.7um is detected in many of the starbursts. We use the fine-structure lines to derive the abundance of neon and sulfur for 14 objects where the HI 7-6 line is detected. We further use the molecular hydrogen lines to sample the properties of the warm molecular gas. Several basic diagrams characterizing the properties of the sample are also shown. We have combined the spectra of all the pure starburst objects to create a high signal-to-noise ratio template, which is available to the community. Description: Our sample is presented in sample.dat file. The observations presented here were made using the high-resolution module of the IRS. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file sample.dat 94 26 The starburst galaxy sample sp/* . 26 *Individual Spitzer/IRS spectra + 2 template -------------------------------------------------------------------------------- Note on sp/*: table25.dat: Spitzer/IRS spectrum of starburst template (normalized to the emission lines and PAHs) presented in Figure 3 table26.dat: Spitzer/IRS spectrum of PAH starburst template (normalized to the PAH emission and continuum subtracted) -------------------------------------------------------------------------------- See also: J/ApJ/619/755 : Modeling starbust SEDs (Dopita+, 2005) J/A+A/469/575 : Spitzer mid-IR spectra of 3 molecular clouds (Berne+, 2007) J/A+A/507/713 : PAH selected galaxies (Haas+, 2009) Byte-by-byte Description of file: sample.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 8 A8 --- Name Galaxy name (blank for templates) 10- 15 A6 --- OType Galaxy type (SB=starburst, SB+AGN, or PAH) 17 A1 --- n_OType [bc] Origin of the AGN evidence (1) 19- 20 I2 h RAh ? Hour of right ascension (J2000) 22- 23 I2 min RAm ? Minute of right ascension (J2000) 25- 29 F5.2 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- 41 F4.1 arcsec DEs ? Arcsecond of declination (J2000) 43- 49 F7.5 --- z ? Redshift 51- 55 F5.1 Mpc Dist ? Distance 57- 61 F5.2 [solLum] logLIR ? Infrared luminosity 63- 69 I7 --- AOR ? AOR ID (high-resolution observations only) 70 A1 --- n_Name [d] Position off the galaxy nucleus (2) 72- 76 A5 --- SH Short-High IRS module integration time (cycles x s) 78- 82 A5 --- LH Long_High IRS module integration time (cycles x s) 84- 94 A11 --- FileName Name of spectrum file in subdirectory sp -------------------------------------------------------------------------------- Note (1): Flags as follows: b = The evidence for an AGN in this object comes from the literature (NED). c = The evidence for an AGN comes from the detection of the [NeV] line in this work. Note (2): The coordinates in the table for this galaxy are slightly off the nucleus (see Section 2 and Figure 1). The galaxy is still included in the LH slit but for the smaller SH slit we used an observation from a different program (PID=3237, AORkey=10510592) where the source is well centered. -------------------------------------------------------------------------------- Byte-by-byte Description of file: sp/* -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 7 F7.4 um Wave Rest frame wavelength 9- 19 E11.4 Jy Flux Continuum subtracted flux; normalized and emission lines removed 21- 30 E10.4 Jy e_Flux Uncertainty in Flux (1) -------------------------------------------------------------------------------- Note (1): The uncertainty in the flux for the individual spectra is derived from the difference between the nod positions. In the cases where there is a flux offset between the nod positions, the flux uncertainties will be large even though the spectral shape in both nods is similar. These uncertainties were not used to weight the spectra when creating the template. -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 23-Feb-2010