Igor Soszyński
University of Warsaw Astronomical Observatory
11 May 2009 The Giant Branches, Lorentz Center, Leiden
Variable RGB and AGB stars in
data
The The OGLE TeamOGLE Team
Andrzej Udalski
Marcin Kubiak
Michał Szymański
Grzegorz Pietrzyński
Igor Soszyński
Łukasz Wyrzykowski
Krzysztof Ulaczyk
Radosław Poleski
OGLE-I 1992-1995
1-m Swope Telescope at Las Campanas Observatory, Chile
~70 observing nights per year
~1.5 square degrees in the Galactic bulge
~2 million stars regularly observed
~20 GB/year
OGLE-I 1992-1995
Catalog of Periodic Variable Stars (Udalski et al. 1994, 1995a,b, 1996, 1997) – 2861
Variable Stars in Dwarf Galaxies: Sculptor, Sagittarius (Kałużny et al. 1995, Mateo et al. 1996)
Variable Stars in Globular Clusters: ω Cen, 47 Tuc (Kałużny et al. 1996, 1997, 1998)
Catalog of Long-Period and Non-Periodic Variable Stars (Żebruń 1998) – 116
Catalog of Contact Binaries (Szymański et al. 2001) – 2084
Catalog of Variable Stars (Pigulski et al. 2003) – 2016
OGLE-II 1997-2000
1.3-m Warsaw Telescope at Las Campanas Observatory, Chile
11 sq. deg. in the Galactic bulge, 4.5 sq. deg. in the LMC, 2.6 sq. deg. in the SMC
~40 million stars regularly observed
~500 GB/year
OGLE-II 1997-2000
Type of variable stars
Environment
Number of stars
Papers
Classical CepheidsLMC
1335 + 81
Udalski et al. (1999b)Soszyński et al. (2000)
SMC2049 +
95Udalski et al. (1999c)Udalski et al. (1999a)
Type II Cepheids Bulge, LMC 54, 14Kubiak & Udalski (2003)
RR Lyrae
LMC 7612 Soszyński et al. (2003)
SMC 571 Soszyński et al. (2002)
Bulge 2700 Mizerski (2003)
Eclipsing BinariesLMC 2580
Wyrzykowski et al. (2003)
SMC 1350Wyrzykowski et al. (2004)
Miras and SRV LMC 3221 Soszyński et al. (2005)
δ Scuti Bulge 193 Pigulski et al. (2006)
β Cephei, SPB LMC, SMC 98 + 90Kołaczkowski et al. (2006)
Type of variable stars
Environment
Number of
stars
Papers
all LMC, SMC 68 000
Żebruń et al. (2001)
all Bulge 220 000
Woźniak et al. (2002)
OGLE-II 1997-2000
OGLE-II 1997-2000
LPVs in the Galactic bulge
Wray et al. (2004) “OGLE small-amplitude variables in the Galactic bar”
Woźniak et al. (2004) “Limits on I-Band Microvariability of the Galactic Bulge Mira Variables”
Matsunaga et al. (2005) “Mira variables in the Galactic bulge with OGLE-II data”
Groenewegen & Blommaert (2005) “Mira variables in the OGLE bulge fields”
OGLE-II 1997-2000
LPVs in the Magellanic Clouds
Kiss & Bedding (2003) “Red variables in the OGLE-II data base - I. Pulsations and period-luminosity relations below the tip of the red giant branch of the Large Magellanic Cloud”
Ita et al. (2004) “Variable stars in the Magellanic Clouds: results from OGLE and SIRIUS”
Kiss & Bedding (2004) “Red variables in the OGLE-II data base - II. Comparison of the Large and Small Magellanic Clouds”
Ita et al. (2004) “Variable stars in the Magellanic Clouds - II. The data and infrared properties”
Groenewegen (2004) “Long Period Variables in the Magellanic Clouds: OGLE + 2 MASS + DENIS”
Lah et al. (2005) “Red variables in the OGLE-II data base - III. Constraints on the three-dimensional structures of the Large and Small Magellanic Clouds”
OGLE-III 2001 – 2009
observed area: 170 square degrees
number of stars: ~400 million
236 000 frames
above 30 TB of raw data
1.7∙1011 individual photometric measurements
OGLE-II and OGLE-III fields in the SMC
ASAS
ASAS
OGLE-II and OGLE-III fields in the LMC
OGLE-III 2001 – 2009
Soszyński et al. (2004a)
OGLE Small Amplitude Red Giants (OSARG)
OGLE-III 2001 – 2009
Soszyński et al. (2004b)
Ellipsoidal and eclipsing red giants in the LMC
OGLE-III 2001 – 2009
Soszyński et al. (2005)
Miras and Semiregular Variables in the LMC
OGLE-III 2001 – 2009
Soszyński (2007)
Long Secondary Periods
OGLE-III 2001 – 2009Soszyński et al. (2007)
Period-Luminosity Relations of LPV
OGLE-III 2001 – 2009Soszyński et al. (2007)
Period-Luminosity Relations of LPV
The Largest Catalogs of Variable Stars
MACHO catalog of variable stars in Magellanic Cloud – 21 000 variables.
Canada-France-Hawaii Telescope catalogue of variable point sources in M33 galaxy – 36 000 variables.
ASAS-3 Catalog of Variable Stars – 50 000 variables.
General Catalogue of Variable Stars +New Catalog of Suspected Variable Stars + Extragalactic Variable Stars – 68 000 variables.
OGLE-II General Catalog of Variable Stars – 268 000 variables.
The OGLE-III Catalog of Variable Stars
Principles:
Classification of all objects
Identification with other catalogs
Data in the electronic form only+ a series of papers
Completeness
Open structure
WWW Interface of the OIII-CVSogle.astrouw.edu.pl
Search for periodicity
32 million stars in the LMC, 6 million in the SMC.
2 week of period search in the ICM UW and in the IBM Research Center, Germany
PlayStation3 consoles
HALO Cluster QS21 (prototype)
Period-Luminosity Diagramfor Variable Stars in the LMC
Period-Luminosity Diagramfor Variable Stars in the LMC
Wesenheit index:
Classical Cepheids in the LMC
FU 1858
1O 1228
2O 14
FU/1O 61
1O/2O 203
1O/3O 2
F/1O/2O 2
1O/2O/3O 3
3361
Classical Cepheids in the LMC
Type II Cepheids in the LMC
BL Her 64
W Vir 96
RV Tau 37
197
Type II Cepheids in the LMC
Anomalous Cepheids in the LMC
F 62
1O 21
83
Anomalous Cepheids in the LMC
RR Lyrae Stars in the LMC
RRab 17 693
RRc 4958
RRd 986
RRe 1269
24 906
Period-Luminosity Diagramfor Variable Stars in the LMC
Long Period Variables
OSARGs~70 000
SRVs ~8000Miras ~1000
LSP ~7000
~80 000
Long Period Variables
Long Period Variables
Spatial distributionof variable stars in the LMC
Classical Cepheids
Miras and Semiregular Variables
RR Lyrae stars
Long Secondary Periods
Irregular Variables
R Coronae Borealis stars
R Coronae Borealis star (?)
Long Secondary Period…of the Long Secondary Period
Long Period Variables
Extreme LPVs
The shortest and the longest-period Miras:
The shortest and the longest-period LSP:
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