Publicly Available Gemini Data: Phoenix

Data taken as part of (visiting) instrument Demonstration Science (DS) or for other engineering purposes and that are deemed to be of scientific value are made public after an assessment period typically not longer than 2 months. You are encouraged to take these datasets and assess or use them yourself.

The available data packages are listed below. The table includes the instrument, data package reference name, (astronomical) target name and a brief summary of the data. A more complete description is contained within the data package itself. Click on the hyperlinks to download the raw data as gzipped tar file(s); these should be saved to disk for unpacking.

The gzipped files may be saved to disk by using "shift+click" or "right-click" plus choose "save" from your browser's menu. Alternatively, e-mail svdata@gemini.edu for a CD-ROM of your requested dataset.

If you do download a data package, please send a brief e-mail with the data package name to svdata@gemini.edu so that we can log usage of the data and contact you if we subsequently discover any problems with these data. Any use of the data should include the usual Gemini acknowledgement.

Instrument

Data Package Name

Target

Preview

Data package

Phoenix

GS-2001B-SV-4

various

No preview available

Science data (51.5Mb)
Calib. data (67.8Mb)

During commissioning, several objects of scientific interest were observed to test the sensitivity of the instrument. In the process, it was found that the slit wheel was not repositioning correctly (the problem was later traced to loose screws), therefore in some cases the objects were not well centered on the slit. Below is a complete list of the targets, with the corresponding filter/wavelength setup:

Target name	Obs. date (UT)	OS filter / central wavel.	Total exp. time
HD84903 GV metal poor star	2001 Dec 17	J9232 / 1.093µm	1800sec
BD+04 2621 GV metal poor	2001 Dec 17	J9232 / 1.093µm	1800sec
CD-24 1782 metal poor	2001 Dec 18	J9232 / 1.093µm	1800sec
2MASSW J0832-01 K=12.69mag	2001 Dec 18	K4308 / 2.3µm	3600sec
Kelu-1 K=11.8 mag L3 dwarf	2001 Dec 18	K4308 / 2.3µm	1200sec
DENIS-P J0255-4700 L8 dwarf	2001 Dec 19	K4308 / 2.3µm	1800sec
2MASSW J0832-01 K=12.69mag	2001 Dec 19	K4308 / 2.3µm	3600sec
SDSS 0539-00 L5 dwarf	2001 Dec 19	K4308 / 2.3µm	3000sec
Kelu-1 L3 dwarf	2001 Dec 19	K4308 / 2.3µm	1400sec
V3 47 Tuc	2001 Dec 22	M2150 /	3000sec
BS 3165 OI	2001 Dec 22	L2734 / 3.676µm	3060sec
HD73882	2001 Dec 22	L2734 / 3.676µm	2480sec

Phoenix

GS-2001B-DS-1

LMC field giant stars

No preview available

Science data (70.5Mb)
Calib. data (126.7Mb)

Demonstration science spectra of LMC field giant stars at 1.6µm and 2.3µm.

The aims of Demonstration Science were to demonstrate the capabilities of Phoenix on Gemini South and verify the system performance by executing a specific scientific program. The program "Determining the O/Fe ratio in the Large Magellanic Cloud" was selected from 12 responses to a solicitation in June 2001, with the science group involving members from the Gemini partner countries. The members of this group were: V. Smith (US, principal investigator), S. Balachandran (US), B. Barbuy (BR), M. Bessel (AU), R. Blum (CTIO), K. Cunha (BR), D. Geisler (CH), J. Hesser (CA), K. Hinkle (US), D. Lambert (US), J. Melendez (BR), C. Pilachowski (US), B. Rodgers (Gemini) and S. Ryan (UK). C. Winge (Gemini) acted as a global coordinator for this program.

A summary of the science case, results and an example spectrum are available on the Phoenix News page.

The data were obtained in February 2002 and include targets down to K=13mag. The datasets available from this page have not been reduced, but all necessary calibrations are included with the distribution. For any questions regarding the data set, or to get a copy (two data CDs), please contact Cláudia Winge (cwinge@gemini.edu).

Last update April 26, 2002; Cláudia Winge