J/AJ/119/241 South Galactic cap MCT blue objects (Lamontagne+, 2000)
The Montreal-Cambridge-Tololo survey of southern subluminous blue stars:
the south Galactic cap.
Lamontagne R., Demers S., Wesemael F., Fontaine G., Irwin M.J.
<Astron. J., 119, 241-260 (2000)>
=2000AJ....119..241L 2000AJ....119..241L
ADC_Keywords: Surveys ; Blue objects ; Photometry, photographic
Keywords: quasars: general - stars: early-type - stars: horizontal-branch -
subdwarfs - surveys - white dwarfs
Abstract:
Results for the south Galactic cap region of the
Montreal-Cambridge-Tololo survey of blue subluminous stars are
presented. This region overlaps the 840 deg2 region studied almost
three decades ago by Slettebak & Brundage (1971AJ.....76..338S 1971AJ.....76..338S). We
present a list of equatorial coordinates, photographic photometry, and
spectroscopic identifications, as well as finding charts, for 188 blue
objects [(U-B)pg≤-0.6] brighter than Bpg=16.5 in this area.
Completeness of the survey and comparisons with other similar efforts
are discussed.
Description:
A detailed description of the first part of our survey, namely, the
photographic observations (including plate scanning, photometric
calibrations, and candidate selection), has been presented by Demers
et al. (1986AJ.....92..878D 1986AJ.....92..878D). Briefly summarized, the MCT survey
consists of 430 doubly exposed U and B plates, taken with the Curtis
Schmidt telescope at the Cerro Tololo Inter-American Observatory
(CTIO) and covering 6750 deg2 (∼15% of the whole sky) in a region
defined by 19h≲RA≲7h and -90°≤DE≤0°. Our survey
blankets most of the south Galactic cap of our Galaxy accessible from
CTIO, up to b=-30°.
The bulk of our spectroscopic material was gathered at CTIO with the
1.5m and 4m telescopes in the course of several observing runs since
1985.
We have identified all 228 selected blue candidates [(U-B)pg≤-0.6]
brighter than Bpg=16.5 in this region of the sky.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 93 188 Catalog of MCT objects in the South Galactic Cap
region
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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- 9 A9 --- MCT MCT designation (HHMM+DDMM, B1950)
11- 12 I2 h RAh Right ascension (B1950.0)
14- 15 I2 min RAm Right ascension (B1950.0)
17- 21 F5.2 s RAs Right ascension (B1950.0)
23 A1 --- DE- Declination sign (B1950.0)
24- 25 I2 deg DEd Declination (B1950.0)
27- 28 I2 arcmin DEm Declination (B1950.0)
30- 33 F4.1 arcsec DEs Declination (B1950.0)
35- 39 F5.2 mag Bpmag [6.7/16.5] Photographic B magnitude
41- 45 F5.2 mag (U-B)pg [-1.7/-0.6] Photographic U-B colour index
47- 50 F4.1 mag Blim Limiting B magnitude for the field in which
the object was discovered
52- 66 A15 --- SpType Spectral Type (or source class)
68- 72 F5.2 mag ymag ?=- Stroemgren y magnitude
74- 78 F5.2 mag b-y ?=- Stroemgren b-y colour index
80- 84 F5.2 mag u-b ?=- Stroemgren u-b colour index
86 A1 --- Com [*] * indicates that the object appears in
one or more alternate catalogs
88- 93 A6 --- Ref References (1)
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Note (1): References as follows:
1 = Heber et al. (1984A&A...130..119H 1984A&A...130..119H)
2 = Hunger et al. (1981A&A....95..244H 1981A&A....95..244H)
3 = Heber (1986A&A...155...33H 1986A&A...155...33H)
4 = McCook & Sion (1999ApJS..121....1M 1999ApJS..121....1M, Cat. III/210, III/235)
5 = Beers et al. (1992, Cat. J/AJ/103/267)
6 = Greenstein (1979ApJ...227..244G 1979ApJ...227..244G)
7 = Reimers et al. (1998A&A...337L..13R 1998A&A...337L..13R)
8 = Koester & Reimers (1981A&A....99L...8K 1981A&A....99L...8K)
9 = Greenstein (1974ApJ...189L.131G 1974ApJ...189L.131G)
10 = Probst (1983ApJS...53..335P 1983ApJS...53..335P)
11 = Werner (1992, in Atmospheres of Early-Type Stars,
ed. U. Heber & C. S. Jeffery (Berlin: Springer), 273)
12 = Kilkenny (1989MNRAS.237..479K 1989MNRAS.237..479K)
13 = Philip & Sanduleak (1968BOTT....4..253P 1968BOTT....4..253P)
14 = Hewitt & Burbidge (1993ApJS...87..451H 1993ApJS...87..451H, Cat. VII/158)
15 = Monk et al. (1986MNRAS.222..787M 1986MNRAS.222..787M)
16 = Barbieri et al. (1982MmSAI..53..511B 1982MmSAI..53..511B)
17 = Reimers et al. (1996A&A...311..572R 1996A&A...311..572R)
18 = Wesemael et al. (1994ApJ...429..369W 1994ApJ...429..369W)
19 = Demers et al. (1990ApJ...351..271D 1990ApJ...351..271D)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 12-Jul-2016