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III/177      H-alpha emission stars in the Orion region (Wiramihardja+ 1993)

Survey Observations of Emission-line Stars in the Orion Region I. The Kiso Area A-0904 Wiramihardja S.D., Kogure T., Yoshida S., Ogura K., Nakano M. <Publ. Astron. Soc. Japan 41, 155 (1989)> (Part I) =1989PASJ...41..155W II. The Kiso Area A-0903 Kogure T., Yoshida S., Wiramihardja S.D., Nakano M., Iwata T., Ogura K. <Publ. Astron. Soc. Japan 41, 1195 (1989)> (Part II) =1989PASJ...41.1195K III. The Kiso Area A-0975 and A-0976 Wiramihardja S.D., Kogure T., Yoshida S., Nakano M., Ogura K., Iwata T. <Publ. Astron. Soc. Japan 43, 27 (1991)> (Part III) =1991PASJ...43...27W IV. The Kiso Area A-1047 and A-1048 Wiramihardja S.D., Kogure T., Ogura K., Yoshida S., Nakano M. <Publ. Astron. Soc. Japan 45, 643 (1993)> (Part IV) =1993PASJ...45..643W
ADC_Keywords: Stars, emission Abstract: Extensive survey observations were carried out for H-alpha emission stars in six Kiso Areas in the Orion region. The observations were made using mainly the Kiso Schmidt telescope, and partly using the CTIO Curtis Schmidt telescope. Our surveys extends the limiting magnitude to V=17.5 over an area of 150 square degrees, and the total number of detected H-alpha emission stars were 1157. The celestial coordinates and the V magnitudes were measured along with an eye estimation of the H-alpha intensities. The identification from the previous observations were also made. The brightness distribution, which is peaked around V=15, suggests that they are probable candidates of T Tauri-type stars. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file catalog.dat 98 1214 H-alpha emission-line stars in Ori region notes.dat 58 68 Notes to flagged stars
Byte-by-byte Description of file: catalog.dat
Bytes Format Units Label Explanations
1- 2 I2 --- area [03/76] Area number (1) 3- 5 I3 --- seq [1/415] Serial number in each area in increasing R.A. order at epoch of 1950.0. 7- 8 I2 h RAh [5] right ascension (hours) (B1950) 10- 11 I2 min RAm right ascension (minutes) 13- 16 F4.1 s RAs right ascension (seconds) 18 A1 --- DE- [±]! declination sign 19- 20 I2 deg DEd [0/12] declination (degrees) (B1950) 22- 23 I2 arcmin DEm declination (minutes) 25- 26 I2 arcsec DEs declination (seconds) 28 I1 --- INT1 [0/9] Estimated H-alpha emission intensity (2) 30 I1 --- INT2 [0/9]? Second estimated H-alpha emission intensity 32 I1 --- INT3 [0/9]? Third estimated H-alpha emission intensity 34- 37 F4.1 mag Vmag [6.5/18.6]?=99.9 V magnitude (3) 39- 98 A60 --- Notes Identification with the previous surveys (4)
Note (1): The 6 area numbers are as follows: ----------------------------------------------- Kiso Area central position paper R.A. Dec. ---------------------------------------------- 03 A0903 5:20 0:00 II 04 A0904 5:40 0:00 I 75 A0975 5:20 - 5:00 III 76 A0976 5:40 - 5:00 III 47 A1047 5:20 -10:00 IV 48 A1048 5:40 -10:00 IV ----------------------------------------------- Note (2): For A0904 and A0976, at three and two epochs of observations, respectively. The scale of emission intensity is given by the six grades of 5 (very strong), 4 (strong), 3 (medium), 2 (weak), 1 (very weak), 0 (absent or doubtful), and 9 means that it lies out of area on the CTIO plates. Note (3): "99.9" indicates unreliable magnitude measurement by several causes, such as unseparated double star image, saturated bright star image, contamination by nebulosities. "=>" indicates another number of the same object appearing in this catalogue beforehand; a "*" indicates a note in file notes.dat (4) Note (4): "=>" indicates another number of the same object appearing in this catalogue beforehand "*" indicates a note in file notes.dat Abbreviations used for the headings in the respective current ID numbers are given below: -------------------------------------------------------------------------- B Bernes, =1977A&AS...29...65B Brun Brun, =1935POLyo...1...12B H Haro, =1953ApJ...117...73H HM Haro & Moreno(1953) Bol.Obs.Tonantzintla Tacubaya 7,11. =1953BOTT....1g..11H HBC Herbig & Bell (1988) Lick Obs. Bulletin No.111. =1988LicOB1111....1H; Catalog V/73 HK Herbig & Kuhi =1963ApJ...137..398H IRAS IRAS Point Source Catalog, Catalog II/125 L LkHa-number (Herbig & Kuhi =1963ApJ...137..398H; Herbig & Rao 1972ApJ...174..401H). M78/ Strom et al. =1975ApJ...196..489S NK Nakajima et al. =1986MNRAS.221..483N NGC2068 Sellgren =1983AJ.....88..985S OH Ogura & Hasegawa =1983PASJ...35..299O P Parenago (1954) Trudy Sternberg Astr. Inst. 25,1. =1954TrSht..25....1P ; Catalog II/171 PC Parsamyan & Chavira (1982) Bol.del Inst. de Tonantzintla 3,69. San Sanduleak =1971PASP...83...95S SSV Strom et al. =1976AJ.....81..308S St Stephenson =1986ApJ...300..779S STR Strom et al. =1989ApJS...71..183S Ton rapid variables found by Haro & Morgan =1953ApJ...118...16H; Haro (1954) Bol Ton y Tac 2, nr 11, 11., and Haro & Rivera Terrazas (1954) Bol Ton y Tac 1, nr 10, 3. V Variable stars. X Strom et al. =1990ApJ...362..168S --------------------------------------------------------------------------
Byte-by-byte Description of file: notes.dat
Bytes Format Units Label Explanations
1- 2 I2 --- area Area number, as in catalog 3- 5 I3 --- seq Serial number, as in catalog 8- 58 A51 --- Text Text of note
Historical Notes: * 11-Aug-1994: The machine-readable version of this catalogue was compiled by M. Nakano at Oita University, and reformatted and documented at the Astronomical Data Analysis Center, the National Astronomical Observatory of Japan. * 24-Feb-1998: the notes have been gathered into the notes.dat file. (F. Ochsenbein, CDS)
(End) S.Nishimura, K.Nakajima [ADAC/NAOJ] 11-Aug-1994
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