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Distances to the High Galactic Latitude Molecular Clouds G192-67 and MBM 23-24
We report on distance determinations for two high-Galactic latitudecloud complexes, G192-67 and MBM 23-24. No distance determination existsin the literature for either cloud. Thirty-four early-type stars wereobserved toward the two clouds, more than half of which have parallaxesmeasured by the Hipparcos satellite. For the remaining stars, we havemade spectroscopic distance estimates. The data consist ofhigh-resolution echelle spectra centered on the Na I D lines and wereobtained over six nights at the Coudé Feed telescope at Kitt PeakNational Observatory. Interstellar absorption lines were detected towardsome of the stars, which enabled estimates of the distances to theclouds of 109+/-14 pc for G192-67 and 139+/-33 pc for MBM 23-24. Wediscuss the relationship of these clouds to other ISM features such asthe Local Hot Bubble and the local cavity in neutral hydrogen.
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Observation and Astrometry data
| Constellation: | Walfisch |
| Right ascension: | 02h18m26.76s |
| Declination: | -18°12'27.0" |
| Apparent magnitude: | 9.406 |
| Proper motion RA: | -22.1 |
| Proper motion Dec: | -30.7 |
| B-T magnitude: | 9.916 |
| V-T magnitude: | 9.449 |
Catalogs and designations:
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INHABITED SKY
