J/ApJS/161/147 Catalog of FHB stars aligned with HVCs (Thom+, 2005)
H I spectra and associated moment maps for all lines of sight.
Thom C., Gibson B.K., Christlieb N.
<Astrophys. J. Suppl. Ser., 161, 147-153 (2005)>
=2005ApJS..161..147T 2005ApJS..161..147T (SIMBAD/NED BibCode)
ADC_Keywords: Stars, horizontal branch ; Molecular clouds ; Interstellar medium
Keywords: Galaxy: evolution - Galaxy: halo - ISM: clouds -
stars: horizontal-branch
Abstract:
We present a catalog of 430 field horizontal branch (FHB) stars,
selected from the Hamburg/ESO Survey (HES), which fortuitously align
with high column density neutral hydrogen (HI) high-velocity cloud
(HVC) gas. These stars are ideal candidates for absorption-line
studies of HVCs, attempts at which have been made for almost 40 years
with little success. A parent sample of 8321 HES FHB stars (Christlieb
et al., 2005, Cat. J/A+A/431/143) was used to extract HI spectra
along each line of sight, using the HI Parkes All-Sky Survey (Putman
et al., 2002, Cat. J/AJ/123/873). All lines of sight aligned with
high-velocity HI emission with peak brightness temperatures greater
than 120mK were examined. The HI spectra of these 430 probes were
visually screened and cross-referenced with several HVC catalogs.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 120 430 Catalog of Field Horizontal Branch stars aligned
with high-velocity clouds
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See also:
J/A+A/431/143 : Field horizontal-branch stars in the Galaxy (Christlieb+ 2005)
J/AJ/123/873 : HIPASS high-velocity clouds (Putman+, 2002)
J/A+A/391/159 : A search for Compact High-Velocity Clouds (De Heij+, 2002)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- [TGC2005] Running number
5- 17 A13 --- HEname HES identification (Cat. J/A+A/431/143) (1)
19- 20 I2 h RAh Hour of Right Ascension (J2000)
22- 23 I2 min RAm Minute of Right Ascension (J2000)
25- 28 F4.1 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- 38 I2 arcsec DEs Arcsecond of Declination (J2000)
40- 45 F6.2 deg GLON Galactic longitude
47- 53 F7.3 deg GLAT Galactic latitude
55- 58 F4.1 mag Bmag The HES B band magnitude (2)
60- 63 F4.1 kpc Dist Distance (3)
65- 68 F4.2 K Tb Peak brightness temperature (4)
70- 76 E7.1 cm-2 NHI HI column density along the line-of-sight
78- 81 I4 km/s VLSR LSR velocity of the peak HI emission (5)
83 A1 --- MS [*] Association with the Magellanic Stream
85- 88 A4 --- HVCtyp HVC type from Putman et al. (2002,
Cat. J/AJ/123/873) (6)
90- 93 I4 --- HVC ? Putman et al. (2002, Cat. J/AJ/123/873)
HVC name
95- 98 A4 --- XHVCtyp XHVC type Putman et al. (2002,
Cat. J/AJ/123/873) (6)
100-102 I3 --- XHVC ? Putman et al. (2002, Cat. J/AJ/123/873)
XHVC name
104-106 A3 --- --- [WvW]
108-110 I3 --- WvW91 ? Wakker & van Woerden (1991A&A...250..509W 1991A&A...250..509W)
HVC name
112-116 A5 --- D02typ de Heij et al. (2002, Cat. J/A+A/391/159)
HVC type (7)
118-120 I3 --- D02 ? de Heij et al. (2002, Cat. J/A+A/391/159)
HVC name
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Note (1): Multiple components in a single line-of-sight have separate entries
and are numbered.
Note (2): Accurate to ∼0.2mag Wisotzki et al. (2000, Cat. J/A+A/358/77).
Note (3): The distance was derived by Christlieb et al. (2005, Cat.
J/A+A/431/143) by estimating the absolute magnitude Mv from the
(B-V) color. A metallicity correction was applied based on an assumed
average halo metallicity and the distance moduli computed. For any
higher gravity A-star contaminants, this distance will be incorrect.
Note (4): Putman et al. (2002, Cat. J/AJ/123/873) quote a 5σ
sensitivity of 0.04K.
Note (5): Outside the VLSR≥90km/s zone. This is the velocity of the HIPASS
channel containing the peak flux - no attempt at profile fitting was
made. The HIPASS velocity resolution is 26.4km/s after Hanning
smoothing.
Note (6): HVCtyp and XHVCtyp, from Putman et al. (2002, Cat. J/AJ/123/873,
tables 1 & 3 respectively), defined as follows:
HVC = filamentary features and their sub-structure which are organized
into large high-velocity cloud complexes
CHVC = features satisfying the criteria of compact, isolated, high-
velocity clouds
:HVC = clouds which could not be unambiguously classified as CHVC
XHVC = Objects with high velocity emission
Note (7): HVC types (from de Heij et al., 2002, Cat. J/A+A/391/159), defined
as follows:
CHVC = clouds satisfying isolation criteria
CHVC: = clouds for which the isolation is less clear
CHVC? = clouds which have some other shortcomings in their isolation
designation
HVC = clouds connected to extended complexes
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 12-Jun-2006