astro

Class TwoMassColorTransformation

java.lang.Object

astro.TwoMassColorTransformation

All Implemented Interfaces:

StarUtilizer, ObjectUtilizer<Star>

public class TwoMassColorTransformation
extends Object
implements StarUtilizer

This class uses JHK colors provided in the 2mass catalog to convert them into a V magnitude, a B-V and also an R-I color index using MNRAS 384, 1178 (2008)

Author:

wooz

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	TwoMassColorTransformation.Test

Constructor Summary

Constructors

Constructor and Description
TwoMassColorTransformation()

Method Summary

Modifier and Type	Method and Description
static boolean	convertJHK(Star stm)
static Vector3D	reclaimJHK(float vmag, float bv, float ri) Recalculates J H and K from above relation, returning them as components of a three dimensional vector in this order.
Star	utilize(Star tm) This method uses extra magnitudes in the star accessible via capital letters 'J' 'H' 'K' to convert them to an approximate V magnitude, a B-V color (which are stored in the appropriate fields) and an R-I color stored in the extra field JohnsonTransformation.RI.

Methods inherited from class java.lang.Object

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

Constructor Detail

TwoMassColorTransformation

public TwoMassColorTransformation()

Method Detail

utilize

public Star utilize(Star tm)

This method uses extra magnitudes in the star accessible via capital letters 'J' 'H' 'K' to convert them to an approximate V magnitude, a B-V color (which are stored in the appropriate fields) and an R-I color stored in the extra field JohnsonTransformation.RI.

Specified by:

utilize in interface StarUtilizer

Specified by:

utilize in interface ObjectUtilizer<Star>

Parameters:

tm - The plain star

Returns:

The input star for subclasser's ease.

convertJHK

public static boolean convertJHK(Star stm)

reclaimJHK

public static Vector3D reclaimJHK(float vmag,
                                  float bv,
                                  float ri)

Recalculates J H and K from above relation, returning them as components of a three dimensional vector in this order.

Parameters:

vmag - V mag from JHK

bv - B-V from JHK

ri - R-I from JHK

Returns:

JHK as a 3dim vector