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Advanced Techniques in Crowded Field Spectroscopy for Gravitational Lens Studies

This document outlines the methodologies, goals, and targets of a research task focused on gravitational lens systems through crowded field spectroscopy. Key objectives include the study of microlensing events, mapping of extended emission sources, and the analysis of lens galaxy properties. We discuss the observational strategies and technological tools needed for effective data acquisition and analysis, emphasizing the importance of high-quality observations and innovative analysis techniques. Collaborations with researchers will enhance the outcomes and broaden our understanding of these systems.

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Advanced Techniques in Crowded Field Spectroscopy for Gravitational Lens Studies

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  1. Crowded Field Spectroscopy CASTLES

  2. Crowded Field Spectroscopy B 1359 + 154

  3. Long-Slit Mapping • Several exposures are needed to scan the GL system (inefficient) • Different bits of information are recorded under different atmospheric and instrumental conditions (differential atmospheric refraction)

  4. SILFID - ARGUS • Angonin et al., 1990, H 1413+117

  5. SILFID - ARGUS • Vanderriest, 1993, Q 0957+561 • Soucail, 1998, Abell 2218, 370

  6. TIGER • Adam et al, 1989, Q 2237+0305 • Fitte & Adams, 1994 • Q 2237+0305

  7. INTEGRAL - Q 2237+0305

  8. INTEGRAL - Q 2237+0305

  9. INTEGRAL - Q 2237+0305

  10. APPLICATIONS • Study of the compact components and monitoring of possible variations (QSO structure, stellar mass function in the lens) • Study (morphology and redshifts) of the extended emission (QSO host, models of the lens galaxy, high redshift galaxies) • Study of the lens galaxy (absorption and extinction)

  11. OBSERVABLE SYSTEMS

  12. Gravitational Lenses SBS 0909 PG 1115 H 1413 FBQ 0951

  13. Gravitational Lenses Task • Goals • Scientific aims • Observational strategy • Targets • Instruments • Tools (inputs from other tasks...) • Team • Scheduling

  14. GLs Task - Goals • Catalogue ? • Good quality observations of a reduced group of selected objects • Explore innovative techniques of analysis • Diseminate IFS among GL researchers • Profit from the net

  15. GLs Task - Scientific aims • Study of microlensing, specially during an High Magnification Event  study of the quasar unresolved structure • Map the extended emission  model the galaxy mass distribution and study the quasar host galaxy • Gravitational telescope  study high z galaxies

  16. GLs Task - Observing strategy • Spectral monitoring (microlensing) • ToO ? (HME) • Complementary observations of a well known system (extended emission in QSO 2237 + 0305)

  17. GLs Task - Targets • Multiple imaged QSOs  best candidates to microlesing, candidates to have extended emission • Q 2237 + 0305 • Giant Arcs

  18. GLs Task - Instruments • Performances • Availability in the next (three) years • Proposals • Observations

  19. GLs Task - Tools • Data analysis tools (inputs from other tasks) • Scientific tools (inverse mapping, GLs models, etc.)

  20. GLs Task - Team • Euro3D members • IAP: J. Wambsganss ... • CAM: A. Bunker ... • IAC: B. Garcia ... • PAR: ... • DUR: ... • ... • Invited GLs researchers • E. Falco, G. Lewis, L. Goicoechea, ...

  21. GLs Task - SubTasks? • Spectral Monitoring (J. Wambsganss?) • ToO program? • Giant Arcs (A. Bunker?) • Extended Emission (E. Mediavilla?) • Proposals coordinator (B. García?) • Data archive (? + Post-Doc) • ...

  22. GLs Task - Actions • Provisional team definition • Goals and sub-tasks revision • Writing urgent proposals (end of September) • Meeting (November)

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