From d54fe7c1f704a63824c5bfa0ece65245572e9b27 Mon Sep 17 00:00:00 2001 From: Joseph Hunkeler Date: Wed, 4 Mar 2015 21:21:30 -0500 Subject: Initial commit --- src/slalib/sun67.htx/node174.html | 126 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 126 insertions(+) create mode 100644 src/slalib/sun67.htx/node174.html (limited to 'src/slalib/sun67.htx/node174.html') diff --git a/src/slalib/sun67.htx/node174.html b/src/slalib/sun67.htx/node174.html new file mode 100644 index 0000000..f243766 --- /dev/null +++ b/src/slalib/sun67.htx/node174.html @@ -0,0 +1,126 @@ + + + + +SLA_RVLSRK - RV Corrn to Kinematical LSR + + + + + + + + + + + + +
+ +next + +up + +previous +
+ Next: SLA_S2TP - Spherical to Tangent Plane +
+Up: SUBPROGRAM SPECIFICATIONS +
+ Previous: SLA_RVLSRD - RV Corrn to Dynamical LSR +

+

+

SLA_RVLSRK - RV Corrn to Kinematical LSR +   +

+
+
ACTION: +
Velocity component in a given direction due to the Sun's +motion with respect to a kinematical Local Standard of Rest. +

CALL: +
R = sla_RVLSRK (R2000, D2000) +

+

+
GIVEN: +
+
+ + + + + +
R2000,D2000RJ2000.0 mean $[\,\alpha,\delta\,]$ (radians)
+

+
RETURNED: +
+
+ + + + + +
sla_RVLSRKRComponent of standard solar motion +in direction R2000,D2000 (km s-1)
+

+
NOTES: +
+
1. +
Sign convention: the result is positive when +the Sun is receding from the given point on the sky. +
2. +
The Local Standard of Rest used here is one of several + kinematical LSRs in common use. A kinematical LSR is the + mean standard of rest of specified star catalogues or stellar + populations. The Sun's motion with respect to a kinematical + LSR is known as the standard solar motion. +
3. +
There is another sort of LSR, seldom used by observational + astronomers, called the dynamical LSR. This is a + point in the vicinity of the Sun which is in a circular orbit + around the Galactic centre. The Sun's motion with respect to + the dynamical LSR is called the peculiar solar motion. To + obtain a radial velocity correction with respect to the + dynamical LSR use the routine sla_RVLSRD. +
4. +
The adopted standard solar motion is 20 km s-1 + towards $\alpha=18^{\rm h},\delta=+30^{\circ}$ (1900). +
+

+
REFERENCES: +
+
1. +
Delhaye (1965), in Stars and Stellar Systems, vol 5, p73. +
2. +
Methods of Experimental Physics (ed Meeks), vol 12, +part C, sec 6.1.5.2, p281. +
+
+ +next + +up + +previous +
+ Next: SLA_S2TP - Spherical to Tangent Plane +
+Up: SUBPROGRAM SPECIFICATIONS +
+ Previous: SLA_RVLSRD - RV Corrn to Dynamical LSR +

+

+

+SLALIB --- Positional Astronomy Library
Starlink User Note 67
P. T. Wallace
12 October 1999
E-mail:ptw@star.rl.ac.uk +
+ + -- cgit