J/AcA/63/135 New OGLEIII dwarf novae in Galactic disk (Mroz+, 2013)
Dwarf novae in the OGLE data.
II. Forty new dwarf novae in the OGLE-III Galactic disk fields.
Mroz P., Pietrukowicz P., Poleski R., Udalski A., Soszynski I.,
Szymanski M.K., Kubiak M., Pietrzynski G., Wyrzykowski L., Ulaczyk K.,
Kozlowski S., Skowron J.
<Acta Astron., 63, 135 (2013)>
=2013AcA....63..135M 2013AcA....63..135M (SIMBAD/NED BibCode)
ADC_Keywords: Milky Way ; Novae ; Magnitudes
Keywords: Galaxy: disk - binaries: close - novae, cataclysmic variables
Abstract:
We report the discovery of forty erupting cataclysmic variable stars
in the OGLE-III Galactic disk fields: seventeen objects of U Gem type,
four of Z Cam type, and nineteen stars showing outbursts and
superoutbursts typical for SU UMa type dwarf novae. In the case of
five stars we were able to estimate their supercycle lengths. The
obtained lengths are in the range of 20-90 d, generally between the
typical SU UMa type variables and a few objects classified as the ER
UMa type variables. Since there is no significant difference between
the two types but a higher mass-transfer rate resulting in more
frequent outbursts and superoutbursts in the ER UMa type stars, we
propose to discard this type as a separate class of variables. We note
that in one of the SU UMa type stars, OGLE-GD-DN-039, we found a
negative supercycle period change, in contrast to other active systems
of this type. Two of the new OGLE objects showed long-duration WZ
Sge-like superoutbursts followed by a sequence of echo outbursts. All
stars reported in this paper are part of the OGLE-III Catalog of
Variable Stars.
Description:
All data presented in this paper were collected between 2001 and 2009
during the third phase of the Optical Gravitational Lensing Experiment
(OGLE-III). The observations were obtained with the 1.3-m Warsaw
Telescope located at Las Campanas Observatory, Chile, which is
operated by Carnegie Institution for Science. A CCD camera attached to
the telescope consisted of eight chips with the total field of view of
35'x35' and the scale of 0.26arcsec/pixel. More
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 59 40 Basic data on the discovered DNe in the
OGLE-III disk fields
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See also:
J/AcA/65/313 : One thousand new dwarf novae from the OGLE Survey (Mroz+, 2015)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- --- [OGLE-GD-DN-]
12- 14 I03 --- Name OGLE-GD-DN number
15 A1 --- n_Name [*] Note on Name (1)
16- 23 A8 --- Field Field name (CARNNN.N)
25- 29 I5 --- StarID Star identification number within the field
31- 32 I2 h RAh Right ascension (J2000)
34- 35 I2 min RAm Right ascension (J2000)
37- 41 F5.2 s RAs Right ascension (J2000)
43 A1 --- DE- Declination sign (J2000)
44- 45 I2 deg DEd Declination (J2000)
47- 48 I2 arcmin DEm Declination (J2000)
50- 53 F4.1 arcsec DEs Declination (J2000)
55- 59 A5 --- Type Type
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Note (1): Object OGLE-GD-DN-009 also refers to star 28443 in field CAR115.2.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 10-May-2016