High Spatial Resolution Mid‐ and Far‐infrared Imaging Study of NGC 2346

Su, K. Y. L.; Kelly, Douglas; Latter, W. B.; Misselt, K. A.; Frank, Adam; Volk, Kevin; Engelbracht, C. W.; Hines, Dean C.; Morrison, J.; Muzerolle, James; Rieke, G. H.; Stansberry, J. A.; Young, Erick T.

doi:10.1086/422505

Cited by 32 publications

(9 citation statements)

References 19 publications

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“…PNe can be strongly peaked at 24 μm; see Su et al (2004) for an example that most likely would have been excluded from our catalog for that reason. Of the 35 "peaked" disks in the list, all 7 with identifications are PNe, so this suggests that there are many more such objects that have been omitted from the catalog.…”

Section: Discussionmentioning

confidence: 99%

A Catalog of Mipsgal Disk and Ring Sources

Mizuno

Kraemer

Flagey

et al. 2010

The Astronomical Journal

108

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We present a catalog of 416 extended, resolved, disk and ringlike objects as detected in the MIPSGAL 24 μm survey of the Galactic plane. This catalog is the result of a search in the MIPSGAL image data for generally circularly symmetric, extended "bubbles" without prior knowledge or expectation of their physical nature. Most of the objects have no extended counterpart at 8 μm or 70 μm, with less than 20% detections at each wavelength. For the 54 objects with central point sources, the sources are nearly always seen in all Infrared Array Camera bands. About 70 objects (16%) have been previously identified, with another 35 listed as Infrared Astronomical Satellite sources. Among the identified objects, those with central sources are mostly listed as emission-line stars, but with other source types including supernova remnants (SNRs), luminous blue variables, and planetary nebulae (PNe). The 57 identified objects (of 362) without central sources are nearly all PNe (∼90%), which suggests that a large fraction of the 300+ unidentified objects in this category are also PNe. These identifications suggest that this is primarily a catalog of evolved stars. Also included in the catalog are two filamentary objects that are almost certainly SNRs, and 10 unusual compact extended objects discovered in the search. Two of these show remarkable spiral structure at both 8 μm and 24 μm. These are likely background galaxies previously hidden by the intervening Galactic plane.

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Section: Discussionmentioning

confidence: 99%

A Catalog of Mipsgal Disk and Ring Sources

Mizuno

Kraemer

Flagey

et al. 2010

The Astronomical Journal

108

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“…While the presence of dust in PNs is well established by infrared spectroscopy, very little is known about its spatial distribution. Recent development in mid-infrared cameras has just begun to explore the dust distribution of PNs (see, e.g., Volk & Kwok 2003;Su et al 2004). However, a full mapping of the dust distribution of PNs has to wait until the development of large-format mid-infrared cameras with high resolution and high sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Dust Extinction in Compact Planetary Nebulae

Lee¹,

Kwok²

2005

ApJ

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The effects of dust extinction on the departure from axi-symmetry in the morphology of planetary nebulae (PNs) are investigated through a comparison of the radio free-free emission and hydrogen recombination line images. The dust exctinction maps of five compact PNs are derived using high-resolution (~ 0".1) H-alpha and radio images maps of the HST and VLA. These extinction maps are then analyzed by an ellipsoidal shell ionization model including the effects of dust extinction to infer the nebulae's intrinsic structure and orientation in the sky. This method provides a quantitative analysis of the morphological structure of PNs and represents a step beyond qualitative classification of morphological types of PNs.Comment: 39 pages, including 21 figure pages and 1 table page; accepted for publication in the Astrophysical Journal; figure quality reduced; full resolution copy available at http://www.noao.edu/staff/thlee/cv/thlee05.pdf.g

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“…Hora et al (2004) examine IRAC images of planetary nebulae that effectively locate hot dust and trace large structures of molecular gas identified through molecular hydrogen emission within some of the IRAC photometric bands Su et al (2004). study the planetary nebula NGC 2346 in the MIPS bands, finding interesting changes in morphology with increasing wavelength.…”

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confidence: 99%

First Fruits of the Spitzer Space Telescope: Galactic and Solar System Studies

Werner

Fazio

Rieke

et al. 2006

Annu. Rev. Astron. Astrophys.

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■ Abstract The Spitzer Space Telescope, launched in August 2003, is the infrared member of NASA's Great Observatory family. Spitzer combines the intrinsic sensitivity of a cryogenic telescope in space with the imaging and spectroscopic power of modern infrared detector arrays. This review covers early results from Spitzer that have produced major advances in our understanding of our own solar system and phenomena within the Galaxy. Spitzer has made the first detection of light from extrasolar planets, characterized planet-forming and planetary debris disks around solar-type stars, showed that substellar objects with masses smaller than 10 M Jup form through the same processes as do solar-mass stars, and studied in detail the composition of cometary ejecta in our Solar System. Spitzer's major technical advances will pave the way for yet more powerful future instruments. Spitzer should operate with full capabilities well into 2009, enabling several additional cycles of discovery and follow-up.include studies of protoplanetary and planetary debris disks where Spitzer results-often in combination with those from other perspectives-appear to paint a fairly complete preliminary picture. In other areas, such as observations of extrasolar planets, brown dwarf spectroscopy, and Kuiper Belt object (KBO) studies, we highlight particularly provocative or exciting results from Spitzer. Some topics have been largely omitted, so that this review does not fully encompass the scope of Spitzer results already in hand; most notably, readers interested in interstellar matter should consult individual Spitzer papers and refer to and Cesarsky & Salama (2005) for a comprehensive summary of results from the Infrared Space Observatory (ISO). This review includes primarily results submitted for publication as of January 1, 2006. Early Spitzer results on extragalactic science are reported in Armus (2006) and . The history of Spitzer is described in Werner (2006) and Rieke (2006). OBSERVATORY OVERVIEWDetailed technical descriptions of Spitzer and its three focal plane instruments are provided in the September 2004 special issue of the Astrophysical Journal Supplement (Werner et al. 2004 and following papers) and also in the proceedings of the International Society for Optical Engineering (Roellig et al. 2004b and following papers). We thus limit this technical description to those features of Spitzer most directly related to its scientific performance. We also highlight the innovations demonstrated by Spitzer that might be most applicable to future missions. OrbitSpitzer utilizes an Earth-trailing heliocentric orbit. As seen from Earth, Spitzer recedes at about 0.1 AU per year. For Spitzer, the Earth-trailing orbit has several major advantages over near-Earth orbits. The principal advantage is the distance from Earth and its heat; this facilitates the extensive use of radiative cooling, which makes Spitzer's cryo-thermal design extremely efficient. The orbit also permits excellent sky viewing and observing efficiency. Spitzer is constraine...

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High Spatial Resolution Mid‐ and Far‐infrared Imaging Study of NGC 2346

Cited by 32 publications

References 19 publications

A Catalog of Mipsgal Disk and Ring Sources

A Catalog of Mipsgal Disk and Ring Sources

Dust Extinction in Compact Planetary Nebulae

First Fruits of the Spitzer Space Telescope: Galactic and Solar System Studies

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