J/ApJ/623/181 Compact high-velocity cloud photometry catalog (Siegel+, 2005)
A search for stellar populations in high-velocity clouds.
Siegel M.H., Majewski S.R., Gallart C., Sohn S.T., Kunkel W.E., Braun R.
<Astrophys. J., 623, 181-195 (2005)>
=2005ApJ...623..181S 2005ApJ...623..181S
ADC_Keywords: Photometry, CMT1T2V ; Photometry, DDO ; Molecular clouds
Keywords: Galaxy: halo - ISM: clouds
Abstract:
We report the results of a photometric search for giant stars
associated with the cores of four high-velocity clouds (HVCs) - two of
which are compact HVCs - using the Las Campanas du Pont 2.5m and Cerro
Tololo Blanco 4m telescopes in combination with a system of filters
(Washington M, T2 + DDO51) useful for identifying low surface
gravity, evolved stars.
Description:
The high-velocity clouds HVC 017-25-218, HVC 030-51-119, and HVC
271+29+181 were observed in the Washington C, M, and T2 filters, as
well as the MgH+Mg b triplet sensitive DDO51 filter, on UT 2000 June
5-8. We used the du Pont 2.5m telescope and the Wide Field Camera
(WFC).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 105 13303 Compact high-velocity cloud (CHVC) photometry catalog
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See also:
J/A+A/391/159 : A search for Compact High-Velocity Clouds (De Heij+, 2002)
J/AJ/123/873 : HIPASS high-velocity clouds (Putman+, 2002)
J/ApJS/136/463 : Distances and metallicities of HVCs and IVCs (Wakker, 2001)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Field Field identification (1)
12- 16 I5 --- ID Star identification (1)
18- 19 I2 h RAh Hour of Right Ascension (J2000)
21- 22 I2 min RAm Minute of Right Ascension (J2000)
24- 28 F5.2 s RAs Second of Right Ascension (J2000)
30 A1 --- DE- Sign of the Declination (J2000)
31- 32 I2 deg DEd Degree of Declination (J2000)
34- 35 I2 arcmin DEm Arcminute of Declination (J2000)
37- 40 F4.1 arcsec DEs Arcsecond of Declination (J2000)
42- 47 F6.3 mag Cmag ?=99.999 Washington C filter magnitude (2)
49- 53 F5.3 mag e_Cmag Uncertainty in Cmag
55- 60 F6.3 mag DDOmag MgH+Mg b triplet sensitive DDO51 filter
magnitude
62- 66 F5.3 mag e_DDOmag Uncertainty in DDOmag
68- 73 F6.3 mag Mmag Washington M filter magnitude
75- 79 F5.3 mag e_Mmag Uncertainty in Mmag
81- 86 F6.3 mag T2mag Washington T2 filter magnitude
88- 92 F5.3 mag e_T2mag Uncertainty in T2mag
94- 98 F5.2 --- Var ?=0.00 Variability index (3)
100-104 F5.3 --- E(B-V) The (B-V) color excess
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Note (1): [SMG2005] LLL-BB-VVV NNNNN and [SMG2005] LLL-BB-Ctl NNNNN in Simbad
Note (2): The 4-meter data have no C imaging. Any values listed as 99.999
were unmeasured.
Note (3): Non-variable stars would have values ≤1.0.
The 4-meter data only have one observation in each filter and the
variability indices are listed as 0.0. The stars from the 2.5-meter
data generally have indices ≤1.0 indicating little variability over
the three days of our observing program and agreement between the
formal errors and empirical scatter of the photometric measures.
Bright stars are occasionally saturated on the CCD images, resulting
in elevated variability indices.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 14-Sep-2005