J/AcA/69/305 Northern Galactic disk classical Cepheids (Skowron+, 2019)
Mapping the Northern Galactic disk warp with classical Cepheids.
Skowron D.M., Skowron J., Mroz P., Udalski A., Pietrukowicz P.,
Soszynski I., Szymanski M.K., Poleski R., Kozlowski S., Ulaczyk K.,
Rybicki K., Iwanek P., Wron A M., Gromadzki M.
<Acta Astron. 69, 305 (2019)>
=2019AcA....69..305S 2019AcA....69..305S (SIMBAD/NED BibCode)
ADC_Keywords: Milky Way ; Stars, variable ; Optical
Keywords: Galaxy: structure - Galaxy: kinematics and dynamics -
Galaxy: stellar content - Stars: oscillations
Abstract:
We present an updated three dimensional map of the MilkyWay based on a
sample of 2431 classical Cepheid variable stars, supplemented with
about 200 newly detected classical Cepheids from the OGLE survey. The
new objects were discovered as a result of a dedicated observing
campaign of the ∼280 square degree extension of the OGLE footprint of
the Galactic disk during 2018-2019 observing seasons. These regions
cover the main part of the northern Galactic warp that has been
deficient in Cepheids so far.
We use direct distances to the sample of over 2390 classical Cepheids
to model the distribution of the young stellar population in the Milky
Way and recalculate the parameters of the Galactic disk warp. Our data
show that its northern part is very prominent and its amplitude is
∼10% larger than that of the southern part.
By combining Gaia astrometric data with the Galactic rotation curve
and distances to Cepheids from our sample, we construct a map of the
vertical component of the velocity vector for all Cepheids in the
Milky Way disk. We find large-scale vertical motions with amplitudes
of 10-20km/s, such that Cepheids located in the northern warp
exhibit large positive vertical velocity (toward the north Galactic
pole), whereas those in the southern warp - negative vertical
velocity (toward the south Galactic pole).
Description:
List of all Galactic Cepheids.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
cepheids.dat 341 2686 All Galactic Cepheids
table1.dat 229 2631 Newly detected classical Cepheids
refs.dat 80 48 References for Source
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Byte-by-byte Description of file: cepheids.dat
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Bytes Format Units Label Explanations
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1 A1 --- New [N] N for New OGLE-IV Cepheids
3- 22 A20 --- Source Data source, in refs.dat file
24- 46 A23 --- Name Name
50- 51 I2 h RAh Right ascension (J2000.0)
52 A1 --- --- [:]
53- 54 I2 min RAm Right ascension (J2000.0)
55 A1 --- --- [:]
56- 60 F5.2 s RAs Right ascension (J2000.0)
63 A1 --- DE- Declination sign (J2000)
64- 65 I2 deg DEd Declination (J2000)
66 A1 --- --- [:]
67- 68 I2 arcmin DEm Declination (J2000)
69 A1 --- --- [:]
70- 73 F4.1 arcsec DEs Declination (J2000)
76- 85 F10.6 deg RAdeg Right ascension (J2000.0)
87- 96 F10.6 deg DEdeg Declination (J2000)
99-107 F9.5 deg GLON Galactic longitude
109-117 F9.5 deg GLAT Galactic latitude
120-125 A6 --- Mode Pulsation mode
128-137 F10.7 d Per Fundamental period
140-148 F9.7 d P1O ?=0 First overtone period
151-159 F9.7 d P2O ?=0 Second overtone period
162-170 F9.7 d P3O ?=0 Third overtone period
173-175 A3 --- Band Bands
179-194 A16 --- OGLE OGLE name (OGLE-BLG-CEP-NNN or OGLE-GD-CEP-NNNN
197-211 A15 --- OGLE-II OGLE-II name
215-229 A15 --- OGLE-III OGLE-III name
233-248 A16 --- OGLE-IV OGLE-IV name
(BLGNNN.NN.NNNNNN or DGNNNN.NN.NNNNN
251-263 A13 --- ASAS ASAS name (HHMMSS+DDMM.m)
266-274 A9 --- ASAS-SN ASAS-SN name
275-292 I18 --- ATLAS ?=- ATLAS name
295-304 A10 --- AAVSO AAVSO name
305-323 I19 --- Gaia-DR2 ?=- Gaia-DR2 identification number
326-341 A16 --- WISE WISE name (JHHMMSS.s+DDMMSS)
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- Source Data source, in refs.dat file
20- 42 A23 --- Name Cepheid ID
45- 53 F9.5 deg GLON Galactic longitude
56- 64 F9.5 deg GLAT Galactic latitude
68- 73 I6 pc Dist ?=-1 Distance to the Cepheid
76- 79 I4 pc e_Dist ?=0 Distance to the Cepheid error
81- 84 I4 Myr Age Cepheid age
88- 97 F10.7 d Per Pulsation period
99-101 A3 --- Mode Pulsation mode
103-108 F6.3 mag IRAC1 ?=-1 Spitzer IRAC 1 3.6um magnitude
110-115 F6.3 mag e_IRAC1 ?=-1 Spitzer IRAC 1 3.6um magnitude error
118-123 F6.3 mag IRAC2 ?=-1 Spitzer IRAC 2 4.2um magnitude
125-130 F6.3 mag e_IRAC2 ?=-1 Spitzer IRAC 2 4.2um magnitude error
133-138 F6.3 mag IRAC3 ?=-1 Spitzer IRAC 3 5.8um magnitude
140-145 F6.3 mag e_IRAC3 ?=-1 Spitzer IRAC 3 5.8um magnitude error
148-153 F6.3 mag IRAC4 ?=-1 Spitzer IRAC 4 8.0um magnitude
155-160 F6.3 mag e_IRAC4 ?=-1 Spitzer IRAC 4 8.0um magnitude error
164-169 F6.3 mag W1 ?=-1 WISE 1 3.4um magnitude
171-176 F6.3 mag e_W1 ?=-1 WISE 1 3.4um magnitude error
179-184 F6.3 mag W2 ?=-1 WISE 2 4.6um magnitude
186-191 F6.3 mag e_W2 ?=-1 WISE 2 4.6um magnitude error
194-199 F6.3 mag W3 ?=-1 WISE 3 12um magnitude
201-206 F6.3 mag e_W3 ?=-1 WISE 3 12um magnitude error
209-214 F6.3 mag W4 ?=-1 WISE 4 22um magnitude
216-221 F6.3 mag e_W4 ?=-1 WISE 4 22um magnitude error
225-229 F5.3 mag AKs ?=0 Interstellar extinction in the Ks-band
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 19 A19 --- Source Source name
22- 80 A59 --- Ref References
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History:
Copied at ftp://ogle.astrouw.edu.pl/ogle4/MILKY_WAY_3D_MAY
(End) Patricia Vannier [CDS] 11-May-2023