igor soszyński

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: