J/A+AS/44/387 Hα-emission stars (Macconnell+, 1981)
Discoveries on southern red-sensitive objective-prism plates III:
new stars having Hα in emission.
MacConnell D.J.
<Astron. Astrophys. Suppl. Ser., 44, 387-399 (1981)>
=1981A&AS...44..387M 1981A&AS...44..387M
ADC_Keywords: Stars, emission
Keywords: Hα-emission stars - Be stars - objective-prism surveys
Abstract:
The catalog includes 731 early-type stars (non-banded spectra) and
34 late-type stars (banded spectra) showing Hα in emission
which were not previously known as emission-line stars.
Description (by B. Skiff):
This is a rough working list of accurate coordinates for MacConnell's
1981 list of H-α emission objects. The original catalog is made
of 2 tables: table I with the early-type stars, and table II with the
late-type stars. A few objects were not recoverable, either due to
gross position errors or simply from plate flaws or something similar.
Many cases were verified using the SuperCOSMOS H-α emission
survey images.
MacConnell's magnitudes are replaced with much better V data mainly
from ASAS-3. The original magnitudes have a scale error at the faint
end (the faintest "11.9" stars are typically mag 13 to 14), and are
generally rather scattered.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 128 771 Catalog of stars having H-α emission
(737 early-type and 34 late-type)
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See also:
III/180 : SS(77) Catalogue: new H-alpha em* in Milky Way (Stephenson+ 1977)
III/205 : H-alpha Stars in Northern Milky Way (Kohoutek+ 1997)
J/A+A/402/963 : Stephenson Hα stars (Maheswar+, 2003)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- --- [[M81]]
7- 8 A2 --- Tbl [I ] Table number (I or II)
9 A1 --- --- [-]
10- 12 I3 --- No [1/737] Star number in table
17- 18 I2 h RAh Right Ascension J2000 (hours)
20- 21 I2 min RAm Right Ascension J2000 (minutes)
23- 27 F5.2 s RAs Right Ascension J2000 (seconds)
29 A1 --- DE- Declination J2000 (sign)
30- 31 I2 deg DEd Declination J2000 (degrees)
33- 34 I2 arcmin DEm Declination J2000 (minutes)
36- 39 F4.1 arcsec DEs Declination J2000 (seconds)
41 A1 --- s [UTMgs?] Source of position (1)
43- 46 F4.1 mag Vmag ? V-band magnitude (1)
48 A1 --- --- [V]
51- 53 A3 --- SpT Spectral type
59-128 A70 --- Remarks Remarks, by B. Skiff
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Note (1): Origin of position as follows:
U = UCAC2 (Cat. I/289)
T = Tycho-2 (Cat. I/259)
M = 2MASS all-sky release (Cat. II/246)
g = GSC-2.2 (I/271) or GSC-2.3 (I/305)
s = SkyView estimate (±2")
? = position from original catalog; concerns the 3 stars which could
not be retrieved:
* I-128: B1950=07:36:12.5-34:58:47, J2000=07:38:03.5-35:05:39
* I-242: B1950=08:26:32.1-26:11:20, J2000=08:28:39.5-26:21:22
* I-563: B1950=17:27:11.6-39:55:06, J2000=17:30:40.8-39:57:21
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History:
* 18-Jul-2009:
The catalog was prepared by Brian Skiff (Lowell Observatory)
* 12-May-2014: the position of star I-660 was reverted to a location quite
close (∼1") to MacConnell's original position, following the publication
by Miranda et al. (1405.1606) about the of the planetary nebula
nature of IRAS 18197-1118, which coincides with I-660.
(End) Francois Ochsenbein [CDS] 18-Jul-2009