J/AcA/63/1 OGLE-IV Magellanic Bridge Data supernovae (Kozlowski+, 2013)
Supernovae and other transients in the OGLE-IV Magellanic Bridge Data.
Kozlowski S., Udalski A., Wyrzykowski L., Poleski R., Pietrukowicz P.,
Skowron J., Szymanski M.K., Kubiak M., Pietrzynski G., Soszynski I.,
Ulaczyk K.
<Acta Astron., 63, 1-19 (2013)>
=2013AcA....63....1K 2013AcA....63....1K
ADC_Keywords: Surveys ; Magellanic Clouds ; Supernovae ; Photometry
Keywords: supernovae: general - Magellanic Clouds - surveys
Abstract:
We analyze two years (mid-2010 to mid-2012) of OGLE-IV data covering
∼65deg2 of the Magellanic Bridge (the area between the Magellanic
Clouds) and find 130 transient events including 126 supernovae (SNe),
two foreground dwarf novae and another two SNe-like transients that
turned out to be active galactic nuclei (AGNs). We show our SNe
detection efficiency as a function of SN peak magnitude based on
available SNe rate estimates. It is 100% for SNe peak magnitudes
I<18.8mag and drops to 50% at I∼19.7mag. With our current observing
area between and around the Magellanic Clouds (∼600deg2), we expect
to find 24 SNe peaking above I<18mag, 100 above I<19mag, and 340 above
I<20mag, annually. We briefly introduce our on-line near-real-time
detection system for SNe and other transients, the OGLE Transient
Detection System.
Description:
The OGLE-IV survey is conducted with the 1.3m Warsaw telescope located
at the Las Campanas Observatory in Chile, operated by the Carnegie
Institution for Science. We analyze the first two years (mid-2010 to
mid-2012) of the Magellanic Bridge OGLE-IV data.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 74 130 OGLE-IV transients from the OGLE-IV Magellanic
Bridge Data
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See also:
ftp://ftp.astrouw.edu.pl/ogle/ogle4/transients/SN/MBR : Home Page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 16 A16 --- Name Name (OGLE-20YY-SN-NNN) (1)
18- 32 A15 --- OGLEIV OGLE-IV name (mbrNNN.NN.NNNNA) (2)
34- 35 I2 h RAh Right ascension (J2000)
37- 38 I2 min RAm Right ascension (J2000)
40- 44 F5.2 s RAs Right ascension (J2000)
46 A1 --- DE- Declination sign (J2000)
47- 48 I2 deg DEd Declination (J2000)
50- 51 I2 arcmin DEm Declination (J2000)
53- 57 F5.2 arcsec DEs Declination (J2000)
58- 64 I7 d Tmax [2455378/2455983] Time of maximum (JD)
66- 70 F5.2 mag Imax Maximum I magnitude (3)
72- 74 A3 --- Rem [G A -] Remark (4)
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Note (1): the supposedly missing SN numbers at the beginning of each year were
already reported in other OGLE papers.
Last four columns have no OGLE name (designated as Dwarf Nova or AGN).
Note (2): objects ending with an "N" are discovered in the database of new
objects. The remaining objects were found in the standard database.
Note (3): The peak SNe magnitudes were corrected to show only SNe fluxes
(the median baseline fluxes were removed).
Note (4): Remarks as follows:
G = the SN host galaxy is present on the template image (I<21mag)
A = the WISE W1-W2 color of the host galaxy is consistent with an AGN
(see Section 4)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 12-Aug-2013