J/AJ/129/927 Unresolved Hα enhancements in WHAM survey (Reynolds+, 2005)
Unresolved Hα enhancements at high galactic latitude in the
WHAM sky survey maps.
Reynolds R.J., Chaudhary V., Madsen G.J., Haffner L.M.
<Astron. J., 129, 927-934 (2005)>
=2005AJ....129..927R 2005AJ....129..927R
ADC_Keywords: Surveys; Photometry, H-alpha
Keywords: catalogs - H II regions - planetary nebulae: general - subdwarfs -
white dwarfs
Abstract:
We have identified 85 regions of enhanced Hα emission
at |b|>10° subtending approximately 1° or less on the Wisconsin
Hα Mapper (WHAM) sky survey (Cat. II/249). These high-latitude
"WHAM point sources" have Hα fluxes of
10-11-10-9ergs/cm2/s, radial velocities within about 70km/s of
the LSR, and line widths that range from less than 20 to about 80km/s
(FWHM). Twenty-nine of these enhancements are not identified with
either cataloged nebulae or hot stars and appear to have kinematic
properties that differ from those observed for planetary nebulae.
Another 14 enhancements are near hot evolved low-mass stars that had
no previously reported detections of associated nebulosity. The
remainder of the enhancements are cataloged planetary nebulae and
small, high-latitude HII regions surrounding massive O and early B
stars.
Description:
The enhancements were identified through a systematic search by eye
through the entire data cube of the WHAM survey.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 43 86 Results for high-latitude WHAM point sources
table2.dat 66 84 WHAM point source identifications
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See also:
II/249 : WHAM Northern Sky Survey, V-1.1 (Haffner+, 2003)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- WPS [1/84] Wisconsin Hα Mapper(WHAM)
Point Source number
3 A1 --- --- [-]
4 I1 --- m_WPS [1/2]? Multiplicity index on WPS
5 A1 --- n_WPS [abc] Source with 2 pixels or less (1)
7- 12 F6.2 deg GLON Galactic longitude
14- 19 F6.2 deg GLAT Galactic latitude
21- 25 F5.1 10-14W/m2 FHa Hα flux (in 10-11erg/cm2/s)
27- 30 F4.1 10-14W/m2 e_FHa rms uncertainty on FHa
32- 34 I3 km/s Vlsr [-79/64] LSR velocity of gaussian fit
36- 37 I2 km/s e_Vlsr [1/10] rms uncertainty on Vlsr
39- 40 I2 km/s FWHM [12/79] Hα Full-Width Half Maximum
42- 43 I2 km/s e_FWHM rms uncertainty on FWHM
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Note (1): Notes as follows:
a = Two pixel point source for which the radial velocity is different
in each beam; see text
b = Two pixel point source
c = One pixel point source with two emission peaks
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- WPS [1/84] Wisconsin Hα Mapper(WHAM)
Point Source number
4- 5 I2 h RAh Right ascension (J2000)
7- 11 F5.2 min RAm Right ascension (J2000)
12 A1 --- DE- Declination sign (J2000)
13- 14 I2 deg DEd Declination (J2000)
16- 17 I2 arcmin DEm Declination (J2000)
19- 37 A19 --- Neb Nebulae name(s) near this direction
39- 53 A15 --- Star Candidate ionizing star name
55- 62 A8 --- SpT MK spectral type of the candidate ionizing star
64- 65 I2 arcmin Offset [2/60]? Offset of of the nebula or star from
the center of the beam
66 A1 --- n_Offset [a] Second candidate (2)
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Note (2): a = WD 0230+343 (DA) is within 52' of beam center.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 07-Jan-2015