Near‐Infrared Galaxy Counts toJandK∼ 24 as a Function of Image Size

1998 ◽  
Vol 505 (1) ◽  
pp. 50-73 ◽  
Author(s):  
Matthew A. Bershady ◽  
James D. Lowenthal ◽  
David C. Koo
Keyword(s):  
Near Infrared ◽  
Image Size ◽  
Infrared Galaxy

scholarly journals NEAR-INFRARED GALAXY COUNTS AND EVOLUTION FROM THE WIDE-FIELD ALHAMBRA SURVEY

2009 ◽  
Vol 696 (2) ◽  
pp. 1554-1575 ◽  
Author(s):  
D. Cristóbal-Hornillos ◽  
J. A. L. Aguerri ◽  
M. Moles ◽  
J. Perea ◽  
F. J. Castander ◽  
...  
Keyword(s):  
Near Infrared ◽  
Wide Field ◽  
Infrared Galaxy

scholarly journals TESTING FOR A LARGE LOCAL VOID BY INVESTIGATING THE NEAR-INFRARED GALAXY LUMINOSITY FUNCTION

2012 ◽  
Vol 754 (2) ◽  
pp. 131 ◽  
Author(s):  
R. C. Keenan ◽  
A. J. Barger ◽  
L. L. Cowie ◽  
W.-H. Wang ◽  
I. Wold ◽  
...  
Keyword(s):  
Luminosity Function ◽  
Near Infrared ◽  
Infrared Galaxy ◽  
Galaxy Luminosity Function

Optical images of star-formation regions

1986 ◽  
Vol 64 (4) ◽  
pp. 387-391
Author(s):  
Bel Campbell ◽  
S. E. Persson
Keyword(s):  
Optical Imaging ◽  
Near Infrared ◽  
Scattered Light ◽  
Position Angle ◽  
Small Sample ◽  
Young Stellar Objects ◽  
Image Size ◽  
Radio Image ◽  
Stellar Objects ◽  
Molecular Outflow

New and sensitive optical imaging of a small sample of young stellar objects is presented. The observations are part of a continuing program of deep, red optical imaging of star-forming regions performed with the 4Shooter charge-coupled-device (CCD) system on the Palomar 5-m telescope. Each of the sources presented is of moderately high luminosity [Formula: see text] and is associated with a bipolar outflow of molecular gas. The results on the source GL490 are discussed in some detail. We find the source core to be well resolved and elongated orthogonal to the outflow direction despite an unresolved image size (< 0.3″) in the near infrared; in addition, there is an extended (> 0.8 pc) cone of diffuse emission out from the core source in the direction of the blue-shifted portion of the molecular outflow. From astrometry of the CCD frame, we find that the center of the optical position is displaced from the radio-image centroid by approximately 1.5″ to the southwest, also in the direction of the blue-shifted outflow. It is proposed that the optical image is totally due to scattered light from a source that is entirely obscured from direct view. Owing to inconsistencies in the orientations of the radio image and polarization position angle with the other source orientations, we conclude that a simple disk plus an orthogonal-outflow scenario is no longer supportable for this object and that continued observations may reveal many equally complex cases.

scholarly journals The Evolution of the Optical and Near‐Infrared Galaxy Luminosity Functions and Luminosity Densities toz ∼ 2

2005 ◽  
Vol 631 (1) ◽  
pp. 126-144 ◽  
Author(s):  
Tomas Dahlen ◽  
Bahram Mobasher ◽  
Rachel S. Somerville ◽  
Leonidas A. Moustakas ◽  
Mark Dickinson ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Galaxy ◽  
Luminosity Functions
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