J/AJ/133/715 Dwarf galaxies of the Local Group (Whiting+, 2007)
An observational limit on the dwarf galaxy population of the Local Group. Whiting A.B., Hau G.K.T., Irwin M., Verdugo M. <Astron. J., 133, 715-733 (2007)> =2007AJ....133..715W
ADC_Keywords: Surveys ; Galaxies, nearby ; Galaxies, photometry Keywords: galaxies: dwarf - Local Group - surveys Abstract: We present the results of an all-sky, deep optical survey for faint Local Group dwarf galaxies. Candidate objects were selected from the second Palomar Observatory Sky Survey and ESO/Science Research Council survey plates, and follow-up observations were performed to determine whether they were indeed overlooked members of the Local Group. Only two galaxies (Antlia and Cetus) were discovered this way out of 206 candidates. Based on internal and external comparisons, we estimate that our visual survey is more than 77% complete for objects larger than 1' in size and with a surface brightness greater than an extremely faint limit over the 72% of the sky not obstructed by the Milky Way. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 88 127 Northern Sky Local Group dwarf galaxy candidates table2.dat 88 67 Southern Sky Local Group dwarf galaxy candidates table3.dat 88 92 Northern Sky Local Group dwarf non-candidates table4.dat 88 40 Southern Sky Local Group dwarf non-candidates
See also: J/AJ/133/2393 : UBVRI phot. in 7 Local Group dwarfs galaxies (Massey+, 2007) J/PAZh/33/577 : New dwarf galaxies in northern groups (Karachentsev+, 2007) Byte-by-byte Description of file: table.dat
Bytes Format Units Label Explanations
1 A1 ---- n_Name [*] * for Object names not included in our previous paper 2- 19 A18 --- Name Source name (1) 21- 22 I2 h RAh Hour of Right Ascension (J2000) (2) 24- 25 I2 min RAm Minute of Right Ascension (J2000) (2) 27- 31 F5.2 s RAs Second of Right Ascension (J2000) (2) 33 A1 --- DE- Sign of the Declination (J2000)(2) 34- 35 I2 deg DEd Degree of Declination (J2000) (2) 37- 38 I2 arcmin DEm Arcminute of Declination (J2000) (2) 40- 43 F4.1 arcsec DEs Arcsecond of Declination (J2000) (2) 45- 49 F5.2 mag/arcsec+2 SB ? The R band surface brightness (2) 51- 54 F4.2 mag/arcsec+2 e_SB ? Uncertainty in SB 56- 75 A20 --- Type Source type (3) 77- 88 A12 arcmin Size Angular size (2)
Note (1): Observational data on Local Group dwarf galaxy candidates in the northern (table1) or southern (table2) sky. The list was produced through visual examination of POSS-II (table1) or SRC/ESO (table2) survey plates. Note (2): Measurements were obtained during follow-up observations with the Kitt Peak 2.1m (table1) or CTIO 1.5m and INT 2.5m (table2) telescopes. Note (3): The identification as Galactic nebulosity, etc., is based on the morphology of the follow-up image, supplemented by other information as available.
Byte-by-byte Description of file: table.dat
Bytes Format Units Label Explanations
1- 18 A18 --- Name Source name (1) 20- 21 I2 h RAh Hour of Right Ascension (J2000) 23- 24 I2 min RAm Minute of Right Ascension (J2000) 26- 29 F4.1 s RAs Second of Right Ascension (J2000) 31 A1 --- DE- Sign of the Declination (J2000) 32- 33 I2 deg DEd Degree of Declination (J2000) 35- 36 I2 arcmin DEm Arcminute of Declination (J2000) 38- 39 I2 arcsec DEs Arcsecond of Declination (J2000) 41- 52 A12 --- Type Source type 54- 83 A30 --- AName Alternate source name(s) 85- 88 I4 km/s HRV ? NED-derived heliocentric radial velocity
Note (1): Objects selected as possible Local Group dwarf galaxies based on their morphology on POSS-II (table3) or ESO/SRC (table4) survey plates, but rejected for various reasons.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 12-Dec-2008
|The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line|