As part of my thesis I am looking for line emitting objects. During follow up observations of low redshift (z ~ 0.24 - 1.2) emission line galaxies at the AAT with AAOmega, we also included the confirmed Lyman alpha emitter J114334.98-014433.7 (aka S11_5236 aka S11_13368; Westra et al. 2005). Below is the spectrum of this object. The exposure time is ~4 hours. The line can be clearly seen.



The spectrum was first presented at the ASA 2006.

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Just found out how to do a LEFT JOIN on combined tables with UNION. It's a bit tricky, but the point is that the result of a UNION is another table... See below:

SELECT `ID`, "whatever columns" FROM (
SELECT "whatever" FROM t1
UNION DISTINCT
SELECT "whatever" FROM t2
) AS newName1
LEFT JOIN
(
SELECT `ID` FROM t3
UNION DISTINCT
SELECT `ID` FROM t4
) AS newName2
ON `newName1`.`ID` = `newName2`.`ID` WHERE `newName2`.`ID` IS NOT NULL

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Hi all,

This is my attempt to blog whatever I'm doing. Most likely it will contain nothing useful and maybe at some point everything will be just canned, but I thought it might be a good idea to start something, so I can just spit my struggles with computing somewhere ;)

Eduard

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