README Template 74.1 (please do not delete the README Template Version line!) ESO Programme ID: ESO Programme ID: 170.D-0010(I) Principal Investigator Name: Norbert Christlieb Principal Investigator E-mail Address: nchristlieb@hs.uni-hamburg.de Principal Investigator Telephone Number: +49-40-42891-4120 Principal Investigator Postal Address: Hamburger Sternwarte Gojenbergsweg 112 21029 Hamburg Instrument: UVES OPC Priority Class: A OPC Approved Total Execution Time: 35 hours Estimated Total Execution Time (including overheads): 34:57:30 README File Submission Date: 20 July 2004 Programme Description ===================== General Overview ---------------- The program consists of UVES observations of three strongly r-process enhanced stars discovered in our Large Programme by means of snapshot spectroscopy: Star B Teff logg [Fe/H] [Eu/Fe] HE2252-4225 16.1 4510 1.1 -3.10 +1.5 HE2327-5642 15.0 4930 1.9 -3.03 +1.3 CS29491-069 13.7 5100 2.5 -2.82 +1.1 These are excellent target for studying the nature of the r-process as well as for (later) attempts to detect uranium. Hence we now want to obtain high-quality spectra of them, in order to carry out a precision abundance analysis. We aim at R = 60,000 (i.e., a 0.8'' slit shall be used) and S/N > 100 per pixel at lambda > 4000 Angstroems. We have chosen two settings, DIC1/390+564 and DIC2/437+860, to reach full wavelength coverage. 1x1 pixel binning is used because we are not readout-noise limited. The spectra might later be re-binned. To facilitate cosmic ray removal, and to allow for flexible scheduling, the total exposure time is split into 30 exposures of 1h each. There are 15 Observing Blocks for each of the two settings. For all three stars, the DIC1 setting has higher priority. For avoiding slit losses due to atmospheric differential refraction, the slit is put to the parallactic angle, and the derotator mode is set to "ELEV" in the OBs. Approved Waiver Request Summary ------------------------------- We requested a change of targets, for including CS29491-069 in our program. This was approved by F. Primas on 20 July 2004. Critical Observing Condition Constraints ---------------------------------------- None Time Critical Aspects --------------------- None Special Calibration Information ------------------------------- None ToO Information --------------- Not applicable Pre-Imaging Requirements ------------------------ None OB Information ============== List of Science OBs ------------------- ID OB name ------ ----------------------- 166433 sci_dic1_HE2252m4225-01 166435 sci_dic1_HE2252m4225-02 166436 sci_dic1_HE2252m4225-03 166437 sci_dic1_HE2252m4225-04 166438 sci_dic1_HE2252m4225-05 166439 sci_dic1_HE2252m4225-06 166440 sci_dic1_HE2252m4225-07 166441 sci_dic1_HE2252m4225-08 166442 sci_dic1_HE2252m4225-09 166443 sci_dic1_HE2252m4225-10 166444 sci_dic1_CS29491m069 166445 sci_dic1_HE2327m5642-01 166447 sci_dic1_HE2327m5642-02 166448 sci_dic1_HE2327m5642-03 166449 sci_dic1_HE2327m5642-04 166450 sci_dic2_HE2252m4225-01 166451 sci_dic2_HE2252m4225-02 166452 sci_dic2_HE2252m4225-03 166453 sci_dic2_HE2252m4225-04 166454 sci_dic2_HE2252m4225-05 166455 sci_dic2_HE2252m4225-06 166456 sci_dic2_HE2252m4225-07 166457 sci_dic2_HE2252m4225-08 166458 sci_dic2_HE2252m4225-09 166459 sci_dic2_HE2252m4225-10 166460 sci_dic2_CS29491m069 166461 sci_dic2_HE2327m5642-01 166462 sci_dic2_HE2327m5642-02 166463 sci_dic2_HE2327m5642-03 166464 sci_dic2_HE2327m5642-04 Total Number of Submitted Science OBs: 30 List of Calibration OBs with Associated Science OBs --------------------------------------------------- Total Number of Submitted Calibration OBs: 0 OB Compliance Checks ==================== (Y = Yes, N = No, NA = Not Applicable) Do all your OBs comply with the instrument specific requirements listed on the instrument specific Phase 2 Web pages ? Y Do all your Finding Charts comply with the both the general and instrument-specific finding chart requirements? Y If you submitted OBs for standard stars, did you specify the magnitude and spectral type of all standard stars ? NA Have you included OBs for any calibrations that you need but which are not a part of the Calibration Plan? NA [UVES only] Do all your UVES OBs use only the allowed templates listed on the UVES Phase 2 Web pages ? Y