Spectra of infrared standard stars

Contents

• IRS standards - K giants - (Sloan et al. 2015a)
• IRS standards - A dwarfs - (Sloan et al. 2015a)
• M giants - (Sloan et al. 2015b)
• Hanscom standards - (Engelke et al. 2006)

All of the spectra below are in spectral FITS format and IPAC table format. The FITS files are saved as a simple FITS image, with wavelength (in µm) in column 0, flux density (in Jy) in column 1, uncertainty in flux density (Jy) in column 2, and an order or spectral segment identifier in column 3. The IPAC table files follow the same format.

IRS standards

The spectra in the following two tables were chosen as candidate standards for the IRS on Spitzer. Unless noted otherwise, the spectra are coadded from the available data, as described by Sloan et al. (2015a). The two exceptions are HR 6348 and HD 173511, which served as primary standards for the IRS and for which template spectra are provided. These were constructed as described by Sloan and Ludovici (2012).

Gzipped tar files with all 33 K giants: FITS files (174 kbytes), IPAC table files (118 kbytes)

Gzipped tar files with all 20 A dwarfs: FITS files (109 kbytes), IPAC table files (72 kbytes)

M giants are far from the ideal standards, but for the sake of completeness, we've included the following M giants published by Sloan et al. (2015b). Users of these spectra, please note that the reference differs from the one for the K giants and A dwarfs.

Target		Sp. Type		FITS file	IPAC table file		Notes
HD 13570		M0 III		hd13570	hd13570
HD 19554		M0 III		hd19554	hd19554
HD 107893		M0 III		hd107893	hd107893
HD 17678		M1 III		hd17678	hd17678
BD+47 2949		M1 III		bd+47_2949	bd+47_2949		also known as HIP 97959
HD 206503		M1 III		hd206503	hd206503
HD 122755		M2 III		hd122755	hd122755
HD 177643		M2 III		hd177643	hd177643
HD 189246		M2 III		hd189246	hd189246
HD 26231		M3 III		hd26231	hd26231
HD 127693		M3 III		hd127693	hd127693
HD 223306		M3 III		hd223306	hd223306
HD 17766		M4 III		hd17766	hd17766
HD 32832		M4 III		hd32832	hd32832
HD 46396		M4 III		hd46396	hd46396
HD 68422		M5 III		hd68422	hd68422
HD 74584		M5 III		hd74584	hd74584
HD 76386		M5 III		hd76386	hd76386
HD 8680		M6 III		hd8680	hd8680
BD+44 2199		M6 III		bd+44_2199	bd+44_2199		also known as HIP 61163

Gzipped tar files with all 20 M giants: FITS files (109 kbytes), IPAC table files (72 kbytes)

Users of these spectra should cite Engelke et al. (2006, AJ, 132, 1445). They are presented here with permission of the first author.

Target		Sp. Type		FITS file		Notes
β Gem		K0 III		betGem.afrl.fits
α Boo		K1.5 III		alpBoo.afrl.fits
β UMi		K4 III		betUMi.afrl.fits
α Tau		K5 III		alpTau.afrl.fits
γ Dra		K5 III		gamDra.afrl.fits
β And		M0 III		betAnd.afrl.fits
µ UMa		M0 III		muuUMa.afrl.fits
α Cet		M1.5 III		alpCet.afrl.fits
β Peg		M2.5 II-III		betPeg.afrl.fits		variable
γ Cru		M3.5 III		gamCru.afrl.fits

gzipped tar file with all 10 Hanscom standards in FITS format (680 kbytes)

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Last modified 19 May, 2022. © Gregory C. Sloan and others.