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LAS & GCS SV2 reports. Nicolas Lodieu. “UKIDSS SV meeting”, Edinburgh, 15 December 2005. LAS report. Photometry of known L/T dwarfs. LAS diagrams (1). WFCAM tile @ RA=10h46 dec=04 ° 24'. No constraint on the Class. Separation Stars & Galaxies. LAS diagrams (2). (J-H,Y-J) diagram. - PowerPoint PPT Presentation
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LAS & GCS SV2 reports
“UKIDSS SV meeting”, Edinburgh, 15 December 2005
Nicolas Lodieu
LAS report
Photometry of known L/T dwarfs
No constraint on the Class
LAS diagrams (1)
Separation Stars & Galaxies
WFCAM tile @ RA=10h46 dec=04°24'
LAS diagrams (2)
(J-H,Y-J) diagram (J-K,Y-J) diagram
LAS vs SDSSWFCAM tile @ RA=09h40 dec=45°WFCAM tile @ RA=10h46 dec=04°24'
(J-K,z-J) diagram(J-K,z-J) diagram
Finding charts
GCS report
IC4665: completeness limits
IC4665: errors on the magnitudes
Z
K
J
Y
H
J zoom
0.1 mag @ Z=19.0
0.1 mag @ J=18.5
0.1 mag @ K=17.0
0.1 mag @ Y=19.0
0.1 mag @ H=18.0
IC4665: CMD (1)
(Y-J,Y) CMD from SV1
IC4665: CMD (2)(Y-J,Y) CMD from SV2
IC4665: Finding charts
Coma Ber: (Y-J,Y) CMD
Coma Ber: Finding charts
Upper Sco: (Z-J,Z) CMD
IC4665: colour-colour diagram
Conclusions
1) Pipeline
2) Suggestions for WSA
Main concern: photometry in LAS and GCS
1) Pipeline seems to detect objects with nothing at their nominal positions
2) Photometry seems unreliable when two stars are close to each other
1) Coordinates in sexagesimal format when an image is output (currently only coordinates in degrees are output)
2) Possibility to input a list of objects to get their UKIDSS photometry