Mid-infrared spectroscopy of the reflection nebulae NGC 2023 and 1333

Near - Infrared Spectroscopy of Molecular Hydrogen Emission in Four Reflection Nebulae : NGC 1333 , NGC 2023 , NGC 2068 , and NGC 7023

We present near-infrared spectroscopy of fluorescent molecular hydrogen (H2) emission from NGC 1333, NGC 2023, NGC 2068, and NGC 7023 and derive the physical properties of the molecular material in these reflection nebulae. Our observations of NGC 2023 and NGC 7023 and the physical parameters we derive for these nebulae are in good agreement with previous studies. Both NGC 1333 and NGC 2068 hav...

Physical Conditions in the Foreground Gas of Reflection Nebulae : NGC 2023 , vdB 102 , and NGC 7023

Guest Observer, McDonald Observatory, University of Texas at Austin. Visiting Astronomer, Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatories, which is operated by the Association of Universities for Research in Astronomy, Inc., under cooperative agreement with the National Science Foundation.

Wide-field Infrared Imaging Polarimetry of the Ngc 6334 Region: a Nest of Infrared Reflection Nebulae

We report the detection of eighteen infrared reflection nebulae (IRNe) in the J , H , & Ks linear polarimetric observations of the NGC 6334 massive star-formation complex, of which 16 IRNe are new discoveries. Our images cover ∼180 square arcminutes, one of the widest near-infrared polarization data in star-formation regions so far. These IRNe are most likely associated with embedded young OB s...

Integrating Spheres for Mid- and Near-infrared Reflection Spectroscopy

Proper Motions of Young Stellar Outflows in the Mid-infrared with Spitzer (irac). I. the Ngc 1333 Region

We use two 4.5μm Spitzer (IRAC) maps of the NGC 1333 region taken over a ∼ 7 yr interval to determine proper motions of its associated outflows. This is a first, successful attempt at obtaining proper motions of stellars outflow from Spitzer observations. For the outflow formed by the HerbigHaro objects HH7, 8 and 10, we find proper motions of ∼ 9-13 km s−1, which are consistent with previously...