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. =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 deg^2^ region studied almost three decades ago by Slettebak & Brundage (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 B_pg_=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). 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 deg^2^ (~15% of the whole sky) in a region defined by 19h<~RA<~7h and -90{deg}<=DE<=0{deg}. Our survey blankets most of the south Galactic cap of our Galaxy accessible from CTIO, up to b=-30{deg}. 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: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table2.dat 93 188 Catalog of MCT objects in the South Galactic Cap region -------------------------------------------------------------------------------- Byte-by-byte Description of file: table2.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 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) -------------------------------------------------------------------------------- Note (1): References as follows: 1 = Heber et al. (1984A&A...130..119H) 2 = Hunger et al. (1981A&A....95..244H) 3 = Heber (1986A&A...155...33H) 4 = McCook & Sion (1999ApJS..121....1M, Cat. III/210, III/235) 5 = Beers et al. (1992, Cat. J/AJ/103/267) 6 = Greenstein (1979ApJ...227..244G) 7 = Reimers et al. (1998A&A...337L..13R) 8 = Koester & Reimers (1981A&A....99L...8K) 9 = Greenstein (1974ApJ...189L.131G) 10 = Probst (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) 13 = Philip & Sanduleak (1968BOTT....4..253P) 14 = Hewitt & Burbidge (1993ApJS...87..451H, Cat. VII/158) 15 = Monk et al. (1986MNRAS.222..787M) 16 = Barbieri et al. (1982MmSAI..53..511B) 17 = Reimers et al. (1996A&A...311..572R) 18 = Wesemael et al. (1994ApJ...429..369W) 19 = Demers et al. (1990ApJ...351..271D) -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Patricia Vannier [CDS] 12-Jul-2016