scholarly journals Planetary nebulae detected in the Spitzer Space Telescope GLIMPSE 3D Legacy Survey

2011 ◽  
Vol 7 (S283) ◽  
pp. 528-529
Author(s):  
Yong Zhang ◽  
Sun Kwok ◽  
Chih-Hao Hsia ◽  
Jun-ichi Nakashima ◽  
Nico Koning
Keyword(s):  
Galactic Plane ◽  
Planetary Nebulae ◽  
Interstellar Extinction ◽  
Optical Observations ◽  
Spitzer Space Telescope ◽  
Good Opportunity ◽  
Mid Infrared ◽  
Space Telescope

AbstractDue to interstellar extinction, optical census of Galactic planetary nebulae (PNs) is highly incomplete, and some compact H ii regions might have been mis-classified as PNs. The problem is particularly severe in the Galactic plane where the extinction in the optical is significant and hampers the detections of PNs. Unlike optical observations, infrared (IR) observations are hardly affected by interstellar extinction, and provide a good opportunity to study highly obscured PNs. In this study, we use the data from the Spitzer Legacy Infrared Mid-Plane Survey Extraordinaire 3D (GLIMPSE 3D) to investigate the mid-infrared (MIR) properties of PNs and PN candidates.

scholarly journals Optical Observations of Galactic and Extragalactic Light: Implications for Galactic Structure

1990 ◽  
Vol 139 ◽  
pp. 21-34
Author(s):  
Gary N. Toller
Keyword(s):  
Galactic Plane ◽  
Historical Review ◽  
Interstellar Extinction ◽  
Galactic Structure ◽  
Optical Observations ◽  
The Sun ◽  
Color Distribution ◽  
Background Light ◽  
Dominant Component ◽  
Spiral Arm

A historical review of integrated starlight, diffuse galactic light, and extragalactic light studies is presented. Together, these components compose the “background light.” Methods ranging from star counts to space-based photometric surveys have succeeded in quantifying the contribution of each component of the background. Integrated starlight is the dominant component. The contribution of diffuse galactic light in the general interstellar medium peaks slightly off the galactic plane and declines toward higher latitudes. The extragalactic light has been determined from both galaxy counts and photometric methods. The blue and red intensity and B–R color distribution of background light have been mapped. The relation between galactic structure and background light measurements is established. The distribution of interstellar extinction is the primary regulator of the brightness. However, spiral arm and stellar distribution effects are discerned in Carina and Sagittarius. The sun lies 13 pc north of the galactic plane as defined by brightness and dust distributions.

scholarly journals Core-Collapse Supernovae as Dust Producers

2007 ◽  
Vol 3 (S250) ◽  
pp. 437-442
Author(s):  
Rubina Kotak
Keyword(s):  
Core Collapse ◽  
Spitzer Space Telescope ◽  
Mid Infrared ◽  
Space Telescope ◽  
Sn 1987A ◽  
Ir Studies ◽  
Low Mass ◽  
Very High

AbstractAlthough it has long been hypothesised that core-collapse supernovae may produce large quantities of dust, interest in this problem has recently been rekindled given the enormous dust masses inferred at very high redshifts (z ≳ 6), when conventional low-mass dust-producing stars would fail to contribute significantly to the universal dust budget. Emission due to warm dust peaks at mid-IR wavelengths. However, with the notable exception of SN 1987A, supernova studies in the mid-IR have been virtually non-existent until the advent of the Spitzer Space Telescope. On behalf of the Mid-Infrared Supernova Consortium, I briefly discuss recent exciting results from mid-IR studies of core-collapse supernovae using Spitzer and attempt to put the role of supernovae as major dust producers into perspective.

RCW 49 at Mid‐Infrared Wavelengths: A GLIMPSE from the Spitzer Space Telescope

2004 ◽  
Vol 154 (1) ◽  
pp. 322-327 ◽  
Author(s):  
E. Churchwell ◽  
B. A. Whitney ◽  
B. L. Babler ◽  
R. Indebetouw ◽  
M. R. Meade ◽  
...  
Keyword(s):  
Spitzer Space Telescope ◽  
Mid Infrared ◽  
Space Telescope ◽  
Infrared Wavelengths

Population of AGB stars in the outer Galaxy

2018 ◽  
Vol 14 (S343) ◽  
pp. 508-509
Author(s):  
Ryszard Szczerba ◽  
Ilknur Gezer ◽  
Bosco H. K. Yung ◽  
Marta Sewiło
Keyword(s):  
Galactic Plane ◽  
Initial Study ◽  
Asymptotic Giant Branch ◽  
Agb Stars ◽  
Spitzer Space Telescope ◽  
Space Telescope ◽  
Preliminary Results ◽  
Galactic Longitude

AbstractWe present preliminary results of a study aimed at identifying and characterizing the Asymptotic Giant Branch (AGB) stars in the outer Galaxy using the color-color diagram (CCD) that combines the Spitzer Space Telescope and 2MASS photometry: Ks – [8.0] vs. Ks – [24]. Our initial study concentrates on a region in the outer Galactic plane around a galactic longitude l of 105°, where we identified 777 O-rich and 200 C-rich AGB star candidates.

scholarly journals Planetary Nebulae Detected in the Spitzer Space Telescope GLIMPSE Legacy Survey

2008 ◽  
Vol 174 (2) ◽  
pp. 426-454 ◽  
Author(s):  
Sun Kwok ◽  
Yong Zhang ◽  
Nico Koning ◽  
Hsiu‐Hui Huang ◽  
E. Churchwell
Keyword(s):  
Planetary Nebulae ◽  
Spitzer Space Telescope ◽  
Space Telescope

scholarly journals The Galactic Disk Distribution of Dust Emission Features in Planetary Nebulae

1999 ◽  
Vol 191 ◽  
pp. 517-522
Author(s):  
S. Casassus ◽  
P.F. Roche
Keyword(s):  
Infrared Spectroscopy ◽  
Galactic Plane ◽  
Galactic Disk ◽  
Dust Emission ◽  
Planetary Nebulae ◽  
Observational Constraints ◽  
Mid Infrared ◽  
Chemical Balance ◽  
Statistical Distance ◽  
Galactic Distribution

The properties of the carbon and oxygen chemical balance in planetary nebulae (PNe) are analysed through mid infrared spectroscopy of warm dust emission features in a sample of 72 objects. The adoption of a statistical distance scale shows that the galactic disk distribution of warm dust types in PNe is rather homogeneous with height over the galactic plane, and that there is a trend for the proportion of PNe with O rich dust signatures to decrease with galactocentric radius. Models of the galactic distribution of PNe compositions require a minimum progenitor mass of 1.2M⊙, although the observational constraints suffer from the smallness of the sample. This initial investigation is however an incentive to pursue the use of warm dust emission in PNe to study their progenitor population in various galactic environments.

First Mid‐Infrared Spectrum of a Faint High‐ z Galaxy: Observations of CFRS 14.1157 with the Infrared Spectrograph on the Spitzer Space Telescope

2004 ◽  
Vol 154 (1) ◽  
pp. 174-177 ◽  
Author(s):  
S. J. U. Higdon ◽  
D. Weedman ◽  
J. L. Higdon ◽  
T. Herter ◽  
V. Charmandaris ◽  
...  
Keyword(s):  
Infrared Spectrum ◽  
Spitzer Space Telescope ◽  
Mid Infrared ◽  
Space Telescope
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