AMBER Science Demontration Data

Del Vel

Abstract

Delta Velorum is a nearby multiple stellar system. The most luminous component was found in 2000 to be the brightest and nearest known eclipsing binary. An eclipsing binary offers an exceptional opportunity to determine precisely a set of fundamental parameters (mass, luminosity, size and chemical composition) for two stars of same age. With this special potential for stellar studies, Delta Velorum could become a valuable template for its class of objects, an opportunity that has not yet been exploited. These data have been acquired during a Science Demonstration run of AMBER in the night of Februaury 25, 2005. Light collected from three telescopes (UTs 2,3,4) was recombined in medium resolution mode (R=1500). The observations consist of 9 exposure files of Delta Velorum (HD79456) and 6 exposure files of its calibrator HD63744. Each file contains 500 frames taken with 59ms exposure time.
The scientific interest of these observations is to resolve the two components of the eclipsing binry. We have analyzed the data with the version 0.106 of amdlib (12 January 2005) accessible on: http://amber.obs.ujf-grenoble.fr/article.php3?id_article=81

Description of the data set:
- Instrument: AMBER
- Configuration: 3 telescopes, medium resolution centered on 2.1microns
- DIT: 59ms

Table 1: AMBER Science Demonstration Data (Delta Velorum) (25 files)

Package	Description
File List	View all files in the package (25)
AMBER03.SD.074.A-9026A	AMBER Data (25 files)

Files Description for Del Vel, and associated calibrator HD 63744

Target, Category, DIT, number of files
Delta Velorum, object, DIT=59ms, 9 files
File Name                  
AMBER.2005-02-26T02:00:12.326.fits 
AMBER.2005-02-26T02:01:28.939.fits
AMBER.2005-02-26T02:02:47.870.fits
AMBER.2005-02-26T02:08:02.431.fits
AMBER.2005-02-26T02:09:22.946.fits 
AMBER.2005-02-26T02:10:43.193.fits
AMBER.2005-02-26T02:33:17.565.fits
AMBER.2005-02-26T02:34:42.215.fits
AMBER.2005-02-26T02:36:02.619.fits 

Target, Category, DIT, number of files
Delta Velorum, sky, DIT=59ms, 3 files
File Name                  
AMBER.2005-02-26T02:04:28.495.fits
AMBER.2005-02-26T02:12:22.997.fits 
AMBER.2005-02-26T02:37:45.334.fits 

Target, Category, DIT, number of files
Delta Velorum, dark, DIT=59ms, 3 files
File Name                  
AMBER.2005-02-26T01:58:44.300.fits
AMBER.2005-02-26T02:06:37.950.fits 
AMBER.2005-02-26T02:32:00.111.fits

Target, Category, DIT, number of files
calibrator, object, DIT=59ms, 6 files
File Name                  
AMBER.2005-02-26T03:00:10.623.fits
AMBER.2005-02-26T03:01:28.838.fits 
AMBER.2005-02-26T03:02:49.162.fits
AMBER.2005-02-26T03:09:31.570.fits 
AMBER.2005-02-26T03:10:54.592.fits   
AMBER.2005-02-26T03:12:12.821.fits  

Target, Category, DIT, number of files
calibrator, sky, DIT=59ms, 2 files
File Name                  
AMBER.2005-02-26T03:04:37.905.fits 
AMBER.2005-02-26T03:13:56.059.fits

Target, Category, DIT, number of files
calibrator, dark, DIT=59ms, 2 files
File Name                  
AMBER.2005-02-26T02:58:48.645.fits  
AMBER.2005-02-26T03:08:10.915.fits 


      



  
    
      
    
  
  
    
      
        
          
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               Last update: December 7, 2005