Project VS-COMPAS
Variable Stars Common Observation
Mission in Particular Areas of the Sky
Variable Stars Common Observation
Mission in Particular Areas of the Sky
1347 stars discovered as of Nov 15, 2015
RS Puppis: the light echoes calibrate
standard candles for accurate distance measurements
by Ivan Adamin in
March-April 2014 (#5) Cepheids allow astronomers to measure vast distances across space. RS Puppis is an unusual cepheid embedded into an interstellar dust cloud illuminated by the variable light, enabling a phenomenon known as a light echo to be observed in details. Sparks (1994) showed that the polarization of a light echo can be used to measure its distance geometrically. This approach was used to determine the distance to RS Puppis with great accuracy, and hence calibrate the cosmic distance scale, based on the period-luminosity relation of classical Cepheid variables.
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Issue #5
March-April 2014
Free Online
PDF Bulletin on Variable Stars
Amateurs' Guide to Variable Stars
Read Online as e-Magazine
In this issue:
KOI-3278: A self-lensing binary star system by Ivan Adamin
BL Bootis stars - anomalous Cepheids by Ivan Adamin
A revision of NSV 13538 = NSVS 17231162 by Alexandr Ditkovsky
NSVS 11075037 = Dauban V53:
updated elements of a Mira variable in Hercules by Siarhey Hadon
Pulsating variable stars and the Hertzsprung-Russell diagram
by Siarhey Hadon, Ivan Adamin
RS Puppis: the light echoes calibrate standard candles for accurate distance measurements
by Ivan Adamin
SS Lacertae: The non-eclipsing eclipsing binary by Ivan Adamin
>>View Full Contents
by Ivan Adamin
BL Bootis stars - anomalous Cepheids
by Ivan Adamin
A revision of NSV 13538 = NSVS 17231162
by Alexandr Ditkovsky
NSVS 11075037 = Dauban V53:
updated elements of a Mira variable in Hercules
by Siarhey Hadon
Pulsating variable stars and the Hertzsprung-Russell diagram
by Siarhey Hadon, Ivan Adamin
RS Puppis: the light echoes calibrate standard candles for accurate distance measurements
by Ivan Adamin
SS Lacertae: The non-eclipsing eclipsing binary
by Ivan Adamin
>>View Full Contents
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