Spectral and photometric monitoring of distant sne in sao ras

Spectral and photometric monitoring of distant SNe in SAO RAS

• A. S. Moskvitin, T. A. Fatkhullin, V. V. Sokolov, V. N. Komarova, E. Sonbas, R. Roy, et al.

Main goals of observational program

• Early observations of recently discovered core-collapse SNe (shock break-out effect, and GRB-SN connections).

The 6-meter telescope as a part of the international monitoring of SNe participiants of the program:

• SAO RAS

• Vladimir V. Sokolov

• Timur A. Fatkhullin

• Viktoria N. Komarova

• Alexander S. Moskvitin

• Tatiana N. Sokolova

• Grigorii M. Beskin

• Vladimir L. Plokhotnichenko

• Sergei V. Karpov

• Vitaly P. Goranskij

• Valerii V. Vlasyuk

• Olga I. Spiridonova

• Azamat F. Valeev

• Aleksandr N. Burenkov

• SAI MSU (GAISH)‏

• Dmitry Yu. Tsvetkov

• Igor' M. Volkov

Observations with BTA and Zeiss-1000, +…

• February, 24, 27 observations with the Zeiss-1000:

• 1) SN 2009M

• 2) SN 2009Z

• 3) CSS090213_083642+091405

• 4) CSS090219_095526-012821

• 5) CSS090214_102503+175821

• 6) CSS090216_100910+075434 = 2009bx (published in CBET#1744)‏

• March, 05 observations with the Zeiss-1000:

• 7) SN 2009af

• 8) SN 2009ao

• March,26 - April,4 observations with the Zeiss-1000:

• 9) SN 2009bw (future publication with S.Benetti, C.Inserra, D.Y. Tsvetkov, I.M.Volkov)‏

• 10) CSS090319:094627-130806

• 11) SN 2009ba

SNe spectra and classification

SN 2006aj, UBVRIJ light curves (Sonbas et al., arXiv:0805.2657)‏

The earlest spectrum of SN 2006aj (BTA)‏

Nebular phase

Nebular spectra of SN 2006aj and SN 2008D

Main goals of observational program

• Early observations of recently discovered core-collapse SNe (shock break-out effect, and GRB-SN connections).

Telescopes & programs in SAO‏

• Proposals (SN+GRB programs): 8 nights (4 fixed + 4 ToO) of 1st semester of 2009 year

• telescopes/devices:

• BTA/Scorpio (photometry and long-slit spectroscopy modes)‏
• BTA/MANIA (photometry, polarimetry and spectroscopy with R=100)‏
• Zeiss-1000
• + other I

+ other telescopes I: international program

• 1.04 m Sampurnanand Telescope, India (R. Roy)‏

• 2-m IUCAA Telescope, Pune, India (R. Roy)‏

• 2-m Zeiss, Terskol peak, (I. Sokolov & Co)‏

• 0.7m AZT-2, SAI MSU (D. Yu. Tsvetkov)‏

• 0.5m telescope, State Astronomical Observatory, Slovakia (I. M. Volkov)‏

• CSS telescopes: 0.68m, 0.5m, 1.5m (A. Drake)‏

• + other II (Italy)‏

+ other telescopes II: Italy part of collaboration

• TNG - Telescopio Nazionale Galileo, 3.58m optical/infrared telescope; Island of San Miguel de La Palma

• Calar Alto - (3.5m or 2.2m or 1.23m) The German-Spanish Astronomical Center at Calar Alto is located in the Sierra de Los Filabres (Andalucia, Southern Spain) north of Almeria.

• NOT - Nordic Optical Telescope, 2.6-m, Observatorio del Roque de los Muchachos, island of La Palma in the Canaries

• Ekar - 1.82m (Cima Ekar-Asiago, Italy)‏

• LT - Liverpool 2.0-m fully robotic telescope

• Pennar 1.22m - Astrophysical Observatory, Asiago, Italy

Catalina Real-time Transient Survey

transient events (SNe, hazard asteroids, CV, AGN, etc.),

• transient events (SNe, hazard asteroids, CV, AGN, etc.),

• timescales: seconds – years,

• ~ few 10000 sq degrees (~1200 sq. degrees per night), -30 < Decl. < 70

• 3 identical system of registration:

• 1) original Catalina Sky Survey (CSS), 68 cm (27 inch) f/1.9 Schmidt telescope near Mt. Bigelow (FOV ~ 9 degrees);
• 2) Siding Springs Survey (SSS), 0.5 meter (20 inch) Uppsala Schimidt telescope (FOV ~ 4.2 degrees);
• 3) Mt. Lemmon Survey (MLSS), 1.5 meter (60 inch) f/2 telescope (FOV ~ 1 degree).

• CCD 4096x4096 (Thermo-electrical cooling ~ -100C), dark ~ 1 e- /hour.

• 4 x 30 sec. exposures with 30 min spacing,

• limit magnitude V = 21.5 (30 sec., 1.5-m telescope)‏

List of newly discovered objects

Galaxies in the field of GRB 021004

Some results of observations (one night as exampe):

March-April'09 observations in SAO

List of nebular phase supernovae

Obtained spectra (April, 3/4)‏

• SN 2009bw (4 x 300 sec)‏

• SN 2009az (2 x 600 sec + 2 x 900 sec.)‏

• SN 2008gz (3 x 900 sec.)‏

• SN 2008in (2 x 900 sec.)‏

• CSS 090317a (2 x 600 sec.)‏

• CSS 090319c (2 x 600 sec.)‏

SuperNova IDentification code

SNID and CSS 090319c (z=0.078)‏

CSS 09019c

090317a and 090319c

CSS 090317a

SN 2008bw & SN 2009az

SN 2008gz & SN 2008in: nebular phase

SN 2008gz: report of Rupak Roy

Another interesting objects:

SN 2009de: z=0.3, M~-21.8, type Ic-pec SN

SN 2009de: line identification, redshift

CSS080928:160837+041627‏ = SN 2008iy

• five BTA spectra: Apr, 23/24; Jun, 20/21; Jyl, 25/26, Jyl, 26/27; Sep, 25/26

• QSO or SN type IIn (narrow lines)‏

• plato at lightcurve

Publications:

• Discovering of SN 2009bx (CSS090216:100910+075434), B, V, Rc photometry with the Zeiss-1000 are published in CBET #1744. (Drake, A. J.; Djorgovski, S. G.; Williams, R.; Mahabal, A.; Graham, M. J.; Catelan, M.; Beshore, E. C.; Larson, S. M.; Hill, R.; Christensen, E.; Moskvitin, A., «Supernova 2009bx», 2009)‏

• SN 2009cb (CSS090319:125916+271641), Rc photometry with the Zeiss-1000: CBET # 1752 (Drake, A. J.; Mahabal, A.; Djorgovski, S. G.; Williams, R.; Graham, M. J.; Hsiao, E. Y.; Graham, M. L.; Pritchet, C. J.; Balam, D.; Moskvitin, A.; Catelan, M.; Beshore, E. C.; Larson, S. M.; Christensen, E., «Supernova 2009cb», 2009)‏

• SN 2009db (CSS090319:142155+260102), Rc photometry (Zeiss-1000), results of spectroscopy(BTA+Scorpio): CBET #1760 (Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Williams, R.; Graham, M. J.; Moskvitin, A. S.; Fatkhullin, T. A.; Sokolov, V. V.; Spiridonova, O. I.; Valeev, A. F.; Sonbas, E.; Pandey, S. B.; Kumar, B.; Roy, R.; Tsvetkov, D. Y.; Catelan, M.; Beshore, E. C.; Larson, S. M.; Christensen, E., «Supernova 2009db», 2009)‏

• SN 2009dy & SN 2009dw ( CSS090422:150104+431314 & CSS090421:133609+340319), SNID comparison with the BTA+Scorpio spectra, redshift estimates: CBET #1791 (Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Williams, R.; Graham, M. J.; Moskvitin, A. S.; Fatkhullin, T. A.; Sokolov, V. V.; Spiridonova, O. I.; Valeev, A. F.; Sonbas, E.; Pandey, S. B.; Kumar, B.; Roy, R.; Tsvetkov, D. Y.; Catelan, M.; Beshore, E. C.; Larson, S. M.; Christensen, E., «Supernovae 2009du-2009dy», 2009)‏

• SN 2009ew (CSS090516:163900+175858) SNID comparison with the BTA+Scorpio spectrum, redshift estimations: CBET # 1815 (Drake, A. J.; Williams, R.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Fatkhullin, T. A.; Moskvitin, A. S.; Sokolov, V. V.; Spiridonova, O. I.; Valeev, A. F.; Sonbas, E.; Pandey, S. B.; Kumar, B.; Roy, R.; Tsvetkov, D. Y.; Balam, D.; Catelan, M.; Beshore, E. C.; Larson, S. M.; Christensen, E., «Supernova 2009ew», 2009)‏

• + few conference reports

Publications in progress:

• SN 2008gz (II type) - SYNOW interpretation of all spectra (BTA+Scorpio, TNG+DOLORES (Italy), IGO+IFOSC (India)): lines identification, expansion velocities, chemical composition. Multicolour lightcurve (104 cm Sampurnanand Telescope (India), BTA): distance, evolution, luminocity, etc. (Rupak Roy, Brajesh Kumar, Shashi B. Pandey (ARIES, India), Stefano Benetti (INAF - OAPd, Italy) и Eda Sonbas (University of Cukurova, Turkey)).

• SN 2008in (II type) – SYNOW interpretation of all spectra, multicolor lightcurve (international monitoring with the BTA, Zeiss-1000, TNG, REM, Pennar 1.22m, Calar Alto, NOT, NTT), estimation of physical parameters, comparison with idenical events. (Rupak Roy, Brajesh Kumar, Shashi B. Pandey (ARIES, India), Stefano Benetti et al. (INAF - OAPd, Italy)).

Thank You

light curve of SN 1987A