3 Additional systems

In this section 34 additional systems are briefly described. These systems do not appear in the main article body because - to our own judgment - they (a) lack some or most of the basic information, and/or (b) have been poorly documented, and/or (c) had little or no follow-ups in the literature, and/or (d) have been applied to very few objects, if not to just a single one. Finally, (e) some

 

Table 1: List of the photometric systems included in the Asiago Database on Photometric Systems (ADPS). The fourth column gives the number of bands, the fifth the figure which describes the system and the sixth lists if the band transmission profiles are given in the ADPS (the systems with square bands are labelled " sqr")

 

Table 1: continued

 

Table 1: continued

systems based on spectral scanner data seem to resemble the classification of very-low dispersion spectra more than the conventional photometric techniques.

After the author name, year of publication and the reference paper (for the reference code numbers see Table 2), for each of the 34 additional systems three types of basic information are given. "Instr:" reports if the system has been obtained with a photometer (+filters) or if it has been designed on spectral scanner data. "Features:" lists the system's goals and the lines/bands/continuum the system is aimed to. Finally, "Bands:" gives the wavelength and width of the system bands.

Kraft - 1960 [170] Instr: photometer. Features: G-band in F-G stars. Bands: at 4305 ( $\Delta \lambda=10$ Å) and 4290 Å ( $\Delta \lambda= 200$ Å).

Gutierrez-Moreno et al. - 1967 [129] Instr: spectral scanner. Features: H$\beta$, H$\gamma$, H$\delta$ in B-A stars. Bands: set by the $50\div80$ Å slit width.

McNamara et al. - 1970 [205] Instr: photometer. Features: CaII K, H$\delta$ and G-band in RR Lyr stars. Bands: at 3933, 4100 and 4305 Å ( $\Delta \lambda=30~$Å for all of them).

Wawrukiewicz - 1971 [268][315] Instr: photometer. Features: TiO and CN in M stars. Bands: at 7125 ( $\Delta \lambda=55$ Å), 7170 ( $\Delta \lambda=302$ Å) and two at 7935 Å ( $\Delta \lambda=135$ and 500 Å).

Lutz and Lutz - 1972 [194] Instr: photometer. Features: H$\gamma$ in O-F stars. Bands: two at H$\gamma$ ( $\Delta \lambda=30$ and 150 Å).

Seeds - 1972 [265] Instr: photometer. Features: C₂ in Carbon stars. Bands: at 5165, 5635, 5300 and 5780 Å ( $\Delta \lambda=100$ Å for all of them).

Caplan - 1973 [59] Instr: spectral scanner. Features: H$\alpha$ in G-M stars. Bands: at 6548 ( $\Delta \lambda=24$ Å), 6563 ( $\Delta \lambda=4.9$ Å) and 6577 Å ( $\Delta \lambda=24$ Å).

Cherepashchuk and Khaliullin - 1973 [67] Instr: photometer. Features: continuum in Wolf Rayet stars. Bands: at 4244 ( $\Delta \lambda=49.5$ Å), 4789 ( $\Delta \lambda=61$ Å), 5806 ( $\Delta \lambda=95$ Å), 6320 ( $\Delta \lambda=91$ Å) and 7512 Å ( $\Delta \lambda=109$ Å).

Jones and Carrick - 1973 [159] Instr: spectral scanner. Features: H$\alpha$ and H$\beta$ in early type stars. Bands: at 4761, 4861, 4961, 6487, 6563 and 6642 Å ( $\Delta \lambda=30.6$ Å for all of them).

Khozof et al. - 1973 [165] Instr: photometer. Features: H^- opacity in A-M stars. Bands: $h\hbox{$^\prime$ }$ (1.58 $\mu$m), $h\hbox{$^{\prime\prime}$ }$ (1.70 $\mu$m) and k (2.15 $\mu$m).

Faÿ et al. - 1974 [104] Instr: spectral scanner. Features: Na I, C₂ and CN in carbon stars. Bands: 20 Å-width bandpasses between 5000 and 7000 Å, with 5610, 5710, 5730, 5820 and 6780 as the most relevant wavelengths.

Gustafsson et al. - 1974 [127][128][231] Instr: echelle spectrophotometer. Features: Metallicity and microturbolence in F-G-K stars. Bands: at 4794.5, 4799.5, 4897.0, 4911.0, 5801.5 and 5805.5 Å ( $\Delta \lambda=3$ Å for all of them).

Nissen - 1974 [232][233] Instr: echelle spectrophotometer. Features: HeI (4026 Å) in B dwarfs. Bands: at 4016 ( $\Delta \lambda=6$ Å), 4026 ( $\Delta \lambda=14$ Å) and 4036 ( $\Delta \lambda=6$ Å).

Sorvari - 1974 [274] Instr: photometer. Features: OI 7772 Å in A-F stars. Bands: two at 7772 Å ( $\Delta \lambda=10$ and 60 Å).

Greenstein - 1976 [121] Instr: multichannel spectrophotometer. Features: classification of WDs. Bands: at 3571, 4255, 4717, 5405, 6579, 6944, 8000 and 10000 Å. [168] adopted somewhat different wavelengths.

Mould - 1976 [217] Instr: spectral scanner. Features: CaH and TiO in M dwarfs. Bands: at 6540, 6830, 7035, 7100, 7500, 7812 and 8130 Å. [218] has slightly modified the bands to investigate T Tau stars of the M type.

Dzervitis - 1977 [89] Instr: photometer. Features: classification of carbon stars via CN and C₂ absorption bands. Bands: at 5135 ( $\Delta \lambda=70$ Å), 5300 ( $\Delta \lambda= 200$ Å), 6775 ( $\Delta \lambda=250$ Å), 7785 ( $\Delta \lambda=170$ Å), 8025 ( $\Delta \lambda=250$ Å) and 8850 Å ( $\Delta \lambda= 300$ Å).

Yamashita et al. - 1977 [333] Instr: multichannel spectrophotometer. Features: Classification of Carbon stars via BaII, LiI, NaI lines and CN, C₂ bands. Bands: at 4160 ( $\Delta \lambda=80$ Å), 4227 ( $\Delta \lambda=10$ Å), 4234 ( $\Delta \lambda=30$ Å), 4237 ( $\Delta \lambda=30$ Å), 4554 ( $\Delta \lambda=10$ Å), 4575 ( $\Delta \lambda=10$ Å), 5150 ( $\Delta \lambda=10$ Å), 5193 ( $\Delta \lambda=10$ Å), 5893 ( $\Delta \lambda=15$ Å), 5893 ( $\Delta \lambda=150$ Å), 6708 ( $\Delta \lambda=8$ Å) and 6708 Å ( $\Delta \lambda=30$ Å).

Mould and McElroy - 1978 [219] Instr: spectral scanner. Features: CaH and TiO bands in M dwarfs. Bands: at 7540 ( $\Delta \lambda=50$ Å), 6880 ( $\Delta \lambda=80$ Å), 7120 ( $\Delta \lambda=60$ Å) and 10175 Å ( $\Delta \lambda=280$ Å).

Pedersen and Rudkj$\o$bing 1978 [241] Instr: echelle spectrophotometer. Features: Ca II K in B-F stars. Bands: at 3929.4 ( $\Delta \lambda=4.3$ Å), 3933.7 ( $\Delta \lambda=4.3$ Å), 3938.0 ( $\Delta \lambda=4.3$ Å) and at 3925.9 ( $\Delta \lambda=7.8$ Å), 3933.7 ( $\Delta \lambda=7.8$ Å), 3941.5 Å ( $\Delta \lambda=7.8$ Å).

Pilachowski - 1978 [246] Instr: photometer. Features: CO in cool giants. Bands: at 2.17 ( $\Delta \lambda=0.098~\mu$m), 2.2 ( $\Delta \lambda=0.40~\mu$m) and 2.41 $\mu$m ( $\Delta \lambda=0.088~\mu$m).

Cohen - 1979 [72] Instr: spectral scanner. Features: NaI and C₂ in Carbon stars. Bands: at 5165, 5185, 5220, 5635, 5660, 5720, 5893, 6070, 6168, 6192, 6195, 6206, 6260, 6615, 6880 and 7830 Å ( $\Delta \lambda=7$ Å for all of them). Mould and Aaronson - 1980 [1][220] Instr: digital spectra. Features: C₂ and TiO in M giants and Carbon stars. Bands: at 4930, 5615, 5690, 6150, 6250 and 6540 Å ( $\Delta \lambda=15$ Å for all of them).

Avetisyan et al. - 1981 [13] Instr: photometer. Features: Continuum away from absorption bands in Carbon stars. Bands: at 3600, 3700, 4800, 5200, 5670, 6160 and 6690 Å ( $120 \leq \Delta \lambda \leq 200$ Å).

Wing and Rinsland - 1981 [330] Instr: infrared spectral scanner ( $\lambda/\Delta \lambda=450$). Features: energy distribution of the continuum and the CO, CN, C₂, OH, H₂, SiO absorption bands in late type stars. Bands: 13 bandpasses in the $1-4~\mu$m range including bands at 1.04, 1.29, 2.10, 2.28 and 4.00 $\mu$m.

Avetisyan and Melik-Alaverdyan - 1982 [14] Instr: photometer. Features: H₂O and CO bands in M giants. Bands: at 0.98 ( $\Delta \lambda=0.03~\mu$m), 1.47 ( $\Delta \lambda=0.03~\mu$m), 1.54 ( $\Delta \lambda=0.03~\mu$m), 1.72 ( $\Delta \lambda=0.04~\mu$m), 1.75 ( $\Delta \lambda=0.03~\mu$m), 1.98 ( $\Delta \lambda=0.05~\mu$m), 2.02 ( $\Delta \lambda=$ $0.05~\mu$m), 2.17 ( $\Delta \lambda=0.05~\mu$m), 2.29 ( $\Delta \lambda=0.06~\mu$m) and 2.39 $\mu$m ( $\Delta \lambda=0.04~\mu$m).

Yorka - 1983 [334] Instr: spectral scanner. Features: NH, CN, CH and C₂ in Carbon stars. Bands: at 3366, 3410, 3875, 3908, 4305, 4325, 4702, 4766, 5630 and 5655 Å ( $\Delta \lambda=20$ Å for all of them).

Hartwick et al. - 1984 [134] Instr: spectral scanner. Features: CaH and TiO absorption bands in M dwarfs. Bands: at 6540 ( $\Delta \lambda=32$ Å), 6830 ( $\Delta \lambda=32$ Å), 7099 ( $\Delta \lambda=30$ Å) and 7500 Å ( $\Delta \lambda=32$ Å).

McWilliam and Lambert - 1984 [206] Instr: photometer. Features: CO in M giants. Bands: at 2.17 and 2.40 $\mu$m.

Nersisian - 1984 [226] Instr: photometer. Features: continuum in Carbon and S stars. Bands: at 4020 ( $\Delta \lambda=120$ Å), 4200 ( $\Delta \lambda=120$ Å), 4660 ( $\Delta \lambda=110$ Å), 4910 ( $\Delta \lambda=130$ Å), 5167 ( $\Delta \lambda=120$ Å), 5670 ( $\Delta \lambda=120$ Å), 5830 ( $\Delta \lambda=100$ Å), 6160 ( $\Delta \lambda=110$ Å) and 6360 Å ( $\Delta \lambda=120$ Å).

Herbst et al. - 1987 [138] Instr: photometer. Features: H$\alpha$ in K and M stars. Bands: a wide ( $\Delta \lambda=150$ Å) and a narrow ( $\Delta \lambda=30$ Å) band centered on H$\alpha$. A third, narrower filter ( $\Delta \lambda=8$ Å) has been added by [139].

Faulkner et al. - 1988 [103] Instr: photometer. Features: molecular opacity in the violet continuum on Carbon stars. Bands: at 3410 ( $\Delta \lambda=90$ Å), 3500 ( $\Delta \lambda=314$ Å), 3676 ( $\Delta \lambda=130$ Å), 3792 ( $\Delta \lambda=116$ Å), 4090 ( $\Delta \lambda=168$ Å) and 4520 Å ( $\Delta \lambda=111$ Å).

Elsner et al. - 1999 [98] Instr: binning of $\lambda$-dispersed fringes by a Fizeau interferometer. Features: photometry by the DIVA astrometric satellite. Bands: 32 or 66 Gaussians (monochromatic instrumental PSF), generously overlapping and covering the whole 3500-11000 Å range.

Vansevicius et al. - 1999 [308] Instr: CCD. Features: Mg in galaxies. Bands: two at 5190 Å ( $\Delta \lambda=80$ and 450 Å).

Acknowledgements

This work has been partially supported by grants from the Osservatorio Astronomico di Padova and CISAS/Agenzia Spaziale Italiana. We would like to thank J.-C. Mermilliod, J. Lequeux and A. Henden for their comments on a preliminary version of the ADPS. Dedicated to Francesco.