Astronomy and Astrophysics – Astronomy
Scientific paper
May 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...196.5102e&link_type=abstract
American Astronomical Society, 196th AAS Meeting, #51.02; Bulletin of the American Astronomical Society, Vol. 32, p.755
Astronomy and Astrophysics
Astronomy
Scientific paper
The Ohio State University Bright Spiral Galaxy Survey is a photometric imaging database of BVRJHK images of a complete sample of ~200 spirals with B <= 12. As such, it provides a zero-redshift calibration set for multicolor studies of galaxies at high redshift. It is particularly important for comparisons with galaxy samples expected from SIRFT and NGST. For SIRTF, the IRAC bandpasses will be 3.6μ m, 4.5μ m, 5.8μ m, and 8.0μ m. For these bands, the OSU Survey limiting bandpasses map onto redshift as follows: B-band: 7 < z < 17; K-band: 0.6 < z < 2.6. If we take the standard IJHKL' NGST near-IR bandpasses, the OSU Survey B-band data map onto the following redshifts: I-band, z=1; J-band, z=1.8; H-band, z=2.6; K-band, z=4; L'-band, z=6.7. An expected 5μ m NGST band would probe the restframe R-band at z ≈ 6. As examples, we present images of two OSU Survey galaxies, NGC 1187 (an SBc galaxy) and NGC 1302 (an SB0/a galaxy). We show the results of redshifting the Survey H-band images into the IRAC 4.5μ m bandpass (z ≈ 1.8), the V-band images into the NGST K-band (z ≈ 3), and the R-band images into an expect NGST 5μ m bandpass (z ≈ 6). This last experiment is of particular interest, as current ideas of galaxy evolution favor an epoch of strong star formation, leading to reionization in the range 5 < z < 10. The Survey data have been rebinned to account for the expected angular resolution of IRAC/SIRTF ( ~ 2.''3) and NGST ( ~ 0.''07 at K, and ~ 0.''2 at 5μ m), respectively. This work is supported by grants AST-9217716 and AST-9617006 from the National Science Foundation.
Eskridge Paul B.
Frogel Jay. A.
Pogge Richard W.
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