SOAR Telescope Echelle Spectrograph UV SCIENCE 2021 BRUNO

SOAR Telescope Echelle Spectrograph UV SCIENCE 2021 BRUNO CASTILHO

Status Fully assembled at SOAR basement lab Fully aligned Calibration unit operational Slit mechanisms FAILED Image derotator REWORK Next mission Early 2020 COVID – Labs Closed Chile closed…. Slit, derotator ^ telescope

SOAR Telescope 4 m, AO, Cerro Pachon, Chile Aluminum Fast response 6 instruments on line Brasil NOIR-Lab (USA) Michigan State U. U. North Carolina

The instrument STELES Blue arm Red arm 3000 -9000Å 3000 -5500Å 5400 -9000Å 50 k max. (80 k) max. (67 k) 0. 8" min. (~0. 5") - 2 pix min. (~0. 6") - 2 pix F / 8. 5 41. 69 l/mm 41, 69 l/mm Crossdisperser VPH 1500 l/mm 600 l/mm Dioptric Cameras F / 2, 0 F / 2, 5 Wavelength range in one exposure Resolving Power Slit Entrance Aperture (arcsec) Fore Optics Input/Output Spectrograph Beam Size F / 16 - F / 8. 5 100 mm Off-axis Collimators Echelles R 4

Spectral format / Detectors Gradient Coating Format Blue chip Red chip

Spectral format / Detectors QEf E 2 V 44 - 82 100 deg SS SS SS DD DD broad grad mid grad 300 36 58 10 7 350 56 63 20 18 400 80 83 56 55 450 84 88 72 73 500 84 90 89 89 91 550 82 92 92 600 78 91 91 92 650 75 89 89 92 700 73 86 87 92 750 68 77 86 91 800 62 64 81 89 850 40 45 70 78 900 25 27 50 57 Based on E 2 V measurements

Calculated performance 0, 200 0, 150 0, 100 0, 050 0, 000 3000 4000 5000 6000 7000 8000 9000 10000

Calculated performance Mv S/N T(min) 11 100 5 13 100 45 17 12 60 650 nm 0. 8” dark time

Science a. UV chemical abundances b. Galaxy chemical evolution c. S & R stars d. Light element abundances e. Cluster red giants and supergiants f. Asterosismology g. Stellar wind and rotation h. Novae, Supernovas, QSOs

Be Since Be is destroyed at higher temperatures, Li. Be diagrams are powerful tests for stellar interior models (see e. g. Delyiannis et al. 2000 IAU 198, Natal) Be is in the UV, in a CROWDED region ----> HR UV spectrograph + Spectral synthesis

Simultaneous Li x Be · Red giants and supergiants on bright clusters · Li x Be in F and G field stars

Abundances, Vrad e Vrot in clusters Red Giants for several clustars Turn-of on closer ones cluster V(TO) [Fe/H] NGC 6397 16. 4 -1. 82 NGC 6752 17. 2 -1. 42 47 Tuc 17. 6 -0. 70 NGC 6397 and NGC 6752

AGN & quasars n n Several AGNs & QSOs with V < 17 Very few observed with R=50 and 300 -900 F Ex: Huchra & Burg 92 ~70 AGNs com V < 14. 5 Schimdt & Green 83 114 QSOs com B < 16. 6 Boroson & Green 92 QSOs brilhantes

Graphic User Interface

Blue LNA, Brasil 14/02/2022

Red LNA, Brasil 14/02/2022

First light IRAF – STELES fits format can be reduced using standard IRAF echelle LNA, Brasil 14/02/2022 Data reduction Pipe line – based on early Science data we plan to adapt CFHT Opera to STELES, as did for MUSICOS and GRACES Eder MArtioli