Download presentation
Presentation is loading. Please wait.
1
LAS & GCS SV2 reports Nicolas Lodieu
“UKIDSS SV meeting”, Edinburgh, 15 December 2005
2
LAS report
3
Photometry of known L/T dwarfs
4
LAS diagrams (1) No constraint on the Class
WFCAM RA=10h46 dec=04°24' No constraint on the Class Separation Stars & Galaxies
5
LAS diagrams (2) (J-H,Y-J) diagram (J-K,Y-J) diagram
6
LAS vs SDSS (J-K,z-J) diagram (J-K,z-J) diagram
WFCAM RA=10h46 dec=04°24' WFCAM RA=09h40 dec=45° (J-K,z-J) diagram (J-K,z-J) diagram
7
Finding charts
8
GCS report
9
IC4665: completeness limits
10
IC4665: errors on the magnitudes
Y Z 0.1 Y=19.0 0.1 Z=19.0 J H 0.1 J=18.5 0.1 H=18.0 K J zoom 0.1 K=17.0
11
IC4665: CMD (1) (Y-J,Y) CMD from SV1
12
IC4665: CMD (2) (Y-J,Y) CMD from SV2
13
IC4665: Finding charts
14
Coma Ber: (Y-J,Y) CMD
15
Coma Ber: Finding charts
16
Upper Sco: (Z-J,Z) CMD
17
IC4665: colour-colour diagram
18
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 2) Suggestions for WSA 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
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.