Abstract
We present the first published infrared observations of the nearby, highly obscured galaxy Dwingeloo 1 (Dw 1), including deep H-band imaging covering a total of 4′.9 × 4′.9, together with J and Ks imaging of the central 2′.5 × 2′.5. We used the small dispersion of the intrinsic infrared colors of spiral galaxies to determine an infrared H-band extinction of AH = 0.47 ± 0.11 mag toward Dw 1. Using infrared colors reduces the uncertainties in the reddening and distance by a factor of 3. The H-band magnitude, corrected for extinction, and the infrared Tully-Fisher relation are then used to estimate a distance modulus of (m - M)0 = 28.62 ± 0.27 and, thus, a distance of d = 5.3+0.7-0.6 Mpc, which places Dw 1 at the far end of the IC 342/Maffei 1-2 group of galaxies. Our result is largely independent of the nature of the reddening law because we estimated both the reddening and the distance at the same wavelength range.
Original language | English (US) |
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Pages (from-to) | 826-830 |
Number of pages | 5 |
Journal | Astronomical Journal |
Volume | 118 |
Issue number | 2 |
DOIs | |
State | Published - Aug 1999 |
Keywords
- Galaxies: distances and redshifts
- Galaxies: individual (Dwingeloo 1)
- Galaxies: photometry
- Infrared radiation
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science