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Variable Star of the Season Archive

The following articles contain useful and interesting information on individual variable stars. Many of the most popular stars in the AAVSO observing program are featured.  From December 1998 until December 2002, the collection of articles comprised the "Variable Star of the Month" series. Since that time, they have all been published as part of the "Variable Star of the Season" (VSOTS) collection. Each article is available in either .html or .pdf format. If you need the Reader plug-in to read a pdf file, you may download it for free from the Adobe website.

Click on one of the links below to go to VSOTS articles on stars of that type:
Be Stars Eclipsing Binaries Mira R CrB RV Tauri Supernovae Z And
Cepheids G Cas Nova-like Recurrent Novae S Dor T Tauri Misc.
Delta Sct Galactic Nuclei Novae RR Lyr Semiregular U Gem UV Cet

 

PULSATORS
Beta Cephei Stars

Beta Cephei Stars and Their Relatives: Winter 2005 html format | pdf format

Cepheids

RS Pup: January 2011
html format | pdf format

TU Cas: Fall 2005
html format | pdf format

W Virginis: Spring 2003 html format | pdf format

X Cygni: September 2002 html format | pdf format

Zeta Geminorum: March 2002 html format | pdf format

Delta Cephei: September 2000 html format | pdf format
 
Delta Scuti Variables

Delta Scuti and the Delta Scuti Variables: Summer 2004 html format | pdf format

Mira Stars

RU Vir: April 2007 html format | pdf format

Mira Variables with Period Changes: April 2011 html format | pdf format

Mira Revisited: Winter 2006 html format | pdf format

R Hydrae: May 2002 html format | pdf format

R Cygni: November 2001 html format | pdf format

R Leonis: April 2001 html format | pdf format

Mira: December 1998 html format | pdf format
 
RR Lyrae

RR Lyrae: Fall 2010 html format | pdf format

AH Leo: Spring 2006 html format | pdf format

XZ Cygni: August 2002 html format | pdf format

RV Tauri types

RV Tauri: January 2009 html format | pdf format

U Monocerotis: Winter 2003 html format | pdf format

R Scuti: July 2000 html format | pdf format

Semiregular

W Hya: April 2008 html format | pdf format

V725 Sgr: Autumn 2006 html format | pdf format

Mu Cephei: October 2002 html format | pdf format

EU Delphini and the Small-Amplitude Pulsating Red Giants: July 2001 html format | pdf format

Betelgeuse: December 2000 html format | pdf format

Z Ursae Majoris: March 2000 html format | pdf format
 
CATACLYSMIC VARIABLES
Novae

Novae: February 2012
html format | pdf format

GK Persei: November 2000 html format | pdf format

Nova-like

UX Ursae Majoris: Spring 2004 html format | pdf format

Recurrent Novae

U Scorpii: July 2009 html format | pdf format

T Pyxidis: April 2002 html format | pdf format

RS Ophiuchi: May 2000 html format | pdf format
 
Supernovae

Supernova 1987A: March 2001 html format | pdf format

U Gem and subtypes

EX Hydrae: April 2009 html format | pdf format

RX Andromedae: October 2007 html format | pdf format

VW Hydri: November 2002 html format | pdf format

IP Pegasi: December 2001 html format | pdf format

WZ Sagittae: September 2001 html format | pdf format

AM Herculis: June 2001 html format | pdf format

SS Cygni: June 2000 html format | pdf format

SU Ursae Majoris: February 2000 html format | pdf format

Z Camelopardalis: April 1999 html format | pdf format

U Geminorum: February 1999 html format | pdf format
 
Z And (Symbiotics)

R Aquarii: Summer 2003 html format | pdf format

CI Cygni: July 2002 html format | pdf format

Z Andromedae: October 2000 html format | pdf format

CH Cygni: August 2000 html format | pdf format
 
ERUPTIVE VARIABLES
Be Stars

V1478 Cyg (MWC 349): July 2007 html format | pdf format

G Cas

Gamma Cassiopeiae: October 2001 html format | pdf format
  Delta Scorpii: July 2011 html format(EN) | (ES)

R CrB

RY Sagittarii: August 2001 html format | pdf format

R Coronae Borealis: January 2000 html format | pdf format

S Doradus

P Cygni: September 2009 html format | pdf format

Eta Carinae: April 2000 html format | pdf format

T Tauri and related stars

RR Tauri: December 2006 html format | pdf format

BM Ori, the Trapezium, and YSOs: April 2012 html format

FU Ori: February 2002 html format | pdf format

T Tauri: February 2001 html format | pdf format
 
UV Ceti Variables/Flare Stars

UV Cet: Fall 2003 html format | pdf format

OTHER TYPES
Eclipsing Binaries

W Ursae Majoris: January 2010 html format | pdf format

Epsilon Aurigae: January 2008 html format | pdf format

β Lyrae: Summer 2005 html format | pdf format

Algol: January 1999 html format | pdf format
 
Active Galactic Nuclei

The Quasar 3C 273: Spring 2005 html format | pdf format

Markarian 421: Winter 2004 html format | pdf format

BL Lacertae: January 2001 html format | pdf format
 
Miscellaneous

FG Sagittae: June 2008 html format | pdf format

FG Sagittae: November 1998 html format | pdf format

V4641 Sgr: June 2006 html format | pdf format

Transiting Exoplanets HD 209458 and TrES-1: September 2004 html format | pdf format

TT Arietis: January 2002 html format | pdf format

V4334 Sgr (Sakurai's Object): June 2002 html format | pdf format  

V838 Mon: December 2002 html format | pdf format

VY Canis Majoris: March 1999 html format | pdf format
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