util
Class EmissionLines

java.lang.Object
  util.EmissionLines

public class EmissionLines
extends Object

Create a wavelength sorted list of quasar emission lines in observed reference frame from Hewitt and Burbidge 1993ApJS...87..451H . The program will extract the emission line from column 81-85 (in quasar restframe) then 'redshift' it back to the observed frame by multiplying it by 1 + z(em) where the emission redshift is from columns 68-73 (ends with first non-numeric char or whitespace).

By John Talbot, Sep 16, 2003

• INPUT: table1.txt data file from 1993ApJS...87..451H, with page headers removed and ZZZ as the last line
• OUTPUT:
  1. list sorted by wavelength of observed frame emission lines with the quasar in which it occurs
  2. Centered running average histogram with 1, 2, 4, 8, 16, 32, 64 and 128 A bin sizes.
  3. Histogram for one bin size and half-bin size shifted count

  Constructor Summary

  EmissionLines()
  

  Method Summary

  static String	formatCount(int aCount)
  static String	formatFloatCount(double aCount)
  static List<Line>	getEmissionLines() Get a sorted list of quasar emission lines in the observed frame from Hewitt and Burbidge 1993ApJS...87..451H.
  static List<Line>	getRandomLines(List<Line> lines, int number) Monte-Carlo generation of a specified number of emission lines randomly generated with the same distribution as bin 64 histogram which simulated the smoothed emission line density distribution.
  static void	getStatistics(List<Line> lines, String fileName) Get statistics from a list of quasar emission lines
  static void	getVarianceOfRandomLines(List<Line> lines, int aNumberOfSimulations)
  static void	main(String[] args)

  Methods inherited from class java.lang.Object

  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  Constructor Detail

  EmissionLines

  public EmissionLines()

  Method Detail

  main

  public static void main(String[] args)

  getVarianceOfRandomLines

  public static void getVarianceOfRandomLines(List<Line> lines,
                                              int aNumberOfSimulations)
                                       throws IOException

  Throws:

  IOException

  getEmissionLines

  public static List<Line> getEmissionLines()
                                     throws IOException

  Get a sorted list of quasar emission lines in the observed frame from Hewitt and Burbidge 1993ApJS...87..451H. Note: There is a many to one correspondence between a line and a quasar (i.e. several lines map to the same quasar)

  Returns:

  list of quasar emission lines

  Throws:

  IOException

  getStatistics

  public static void getStatistics(List<Line> lines,
                                   String fileName)
                            throws IOException

  Get statistics from a list of quasar emission lines

  Parameters:

  lines - a List of Line instances representing the quasar emssion lines

  Throws:

  IOException

  formatCount

  public static String formatCount(int aCount)

  formatFloatCount

  public static String formatFloatCount(double aCount)

  getRandomLines

  public static List<Line> getRandomLines(List<Line> lines,
                                          int number)

  Monte-Carlo generation of a specified number of emission lines randomly generated with the same distribution as bin 64 histogram which simulated the smoothed emission line density distribution.

  Parameters:

  lines - a List of Line instances representing peaks in the real quasar emission line data.

  number - the number of random lines to generate

  Returns:

  a list of quasar emission lines with the same distribution as the input list