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HD 44578


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MSX, 2MASS, and the LARGE MAGELLANIC CLOUD: A Combined Near- and Mid-Infrared View
The Large Magellanic Cloud (LMC) has been observed by the MidcourseSpace Experiment (MSX) in the mid-infrared and the Two Micron All SkySurvey (2MASS) in the near-infrared. We have performed across-correlation of the 1806 MSX catalog sources and nearly 1.4 million2MASS cataloged point and extended sources and find 1664 matches. Usingthe available color information, we identify a number of stellarpopulations and nebulae, including main-sequence stars, giant stars, redsupergiants, carbon- and oxygen-rich asymptotic giant branch (AGB)stars, planetary nebulae, H II regions, and other dusty objects likelyassociated with early-type stars. A total of 731 of these sources haveno previous identification. We compile a listing of all objects, whichincludes photometry and astrometry. The 8.3 μm MSX sensitivity is thelimiting factor for object detection: only the brighter red objects,specifically the red supergiants, AGB stars, planetary nebulae, and H IIregions, are detected in the LMC. The remaining objects are likely inthe Galactic foreground. The spatial distribution of the infrared LMCsources may contribute to understanding stellar formation and evolutionand the overall galactic evolution. We demonstrate that a combined mid-and near-infrared photometric baseline provides a powerful means ofidentifying new objects in the LMC for future ground-based andspace-based follow-up observations.

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Osservazione e dati astrometrici

Costellazione:Dorado
Ascensione retta:06h16m41.91s
Declinazione:-69°04'34.0"
Magnitudine apparente:7.493
Distanza:255.102 parsec
Moto proprio RA:10.3
Moto proprio Dec:-0.9
B-T magnitude:9.137
V-T magnitude:7.629

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 44578
TYCHO-2 2000TYC 9164-1344-1
USNO-A2.0USNO-A2 0150-04219790
HIPHIP 29812

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