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J/AJ/109/2376       Case blue/emission-line galaxies (Salzer+ 1995)

Imaging and spectroscopic observations of the Case Survey blue/emission-line galaxies. Salzer J.J., Moody J.W., Rosenberg J.L., Gregory S.A., Newberry M.V. <Astron. J. 109, 2376 (1995)> =1995AJ....109.2376S (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, photometry ; Photometry, CCD ; Radial velocities Abstract: We present CCD imaging and spectroscopic data for 176 blue and/or emission-line galaxies from Lists I and II of the Case Northern Sky Survey. Our sample consists of all Case galaxies which lie in the region which overlaps the original Slice of the Universe survey. We use the observational data to investigate the physical properties of the galaxies selected by the surveys to compare with various parameters published in the survey lists, and to investigate the selection characteristics and completeness limit of the survey. The majority of the Case galaxies are energized by regions of active star formation; only 5% of the sample are Seyfert galaxies. The dual selection techniques used (both UV-excess and emission lines) allow the survey to detect star-forming galaxies with a wide range of properties and evolutionary states. In particular, the Case survey selects galaxies with lower levels of activity than most previous surveys. The survey also includes a larger fraction of intermediate and low-luminosity galaxies than would be present in a purely magnitude-limited sample. Although galaxies as faint as mB=19 are present in the sample, the completeness limit of the UV-excess selected portion of the survey is closer to mB=16. The luminosity function of the Case galaxies is derived and compared with that of the "normal" field galaxies in the same volume of space. The shape of the Case luminosity function is similar to that for the field sample. A surprising result is that 31% of the field galaxy population can be accounted for by galaxies of the type selected in the Case survey. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 81 176 The Case galaxies-sample properties.
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 3 I3 --- CG Case Survey number 5- 6 I2 h RAh Right ascension (1950) 8- 9 I2 min RAm Right ascension (1950) 11- 12 I2 s RAs Right ascension (1950) 14 A1 --- DE- Declination sign 15- 16 I2 deg DEd Declination (1950) 18- 19 I2 arcmin DEm Declination (1950) 21- 22 I2 arcsec DEs Declination (1950) 24 A1 --- l_Vmag Limit flag on Vmag 25- 26 I2 mag Vmag Apparent magnitude estimate 28- 34 A7 --- SpCode [bmswyv ?] Spectral code (1) 36- 40 F5.2 mag Bmag B magnitude 41 A1 --- n_Bmag [#] Note on Bmag (2) 43 I1 --- r_Bmag Reference for B magnitude (3) 45- 47 I3 arcsec DiamA ? Angular diameter 50- 54 I5 km/s RV ? Radial velocity corrected to the velocity centroid of the local group 56- 61 F6.2 mag BMAG ? Absolute B magnitude 64- 67 F4.1 kpc DiamL ? Linear diameter 69- 80 A12 --- Names Other names (4) 81 A1 --- Note [*] Individual note (5)
Note (1): The first code is an estimate of the color of the continuum. When the code is absent, there is a blank in column 28 mb: moderate blue b: (blue), means that the UV continuum is enhanced y: (yellow), means that the spectrum looks like a more typical F- or G-type galaxy The second and first parameters are the strength of the [OII] and [OIII] lines, respectively. If the [OII] line is not present, there is a blank after the continuum color: vs: very strong s: strong m: medium strength w: weak A ? after the value means that the detection was questionable Note (2): #: Denotes apparent magnitudes obtained under slightly non-photometric conditions. Note (3): 1: MDM CCD photometry 2: CPO CCD photometry 3: CGCG magnitudes modified as specified by Kron & Shane (1976Ap&SS..39..401K) 4: Case survey list magnitudes modified using the mean offset between Bmag and mvis (Bmag=mvis+0.25) Note (4): U = UGC (Nilson 1973, Cat. VII/26) N = NGC (See Cat. VII/1) I = IC (Dreyer 1888, 1895, 1908, Cat. VII/118) Mk = Markarian (1981, Cat. VII/172) Wa = Wasilewski (1983ApJ...272...68W) Haro = Haro (1956BOTT....2n...8H) Arp = Arp (1966, Cat. VII/74) Note (5): CG 3 = N2679/80 CG 21 = N2893 CG 33 = N3011 CG 61 = N3265 CG 118 = N3786 = Arp 294 CG 168 = N4253
History: Prepared via OCR at CDS. * 30-Sep-1998: 2 OCR errors detected by H. Andernach and corrected () References: Pesch & Sanduleak, Case survey. I. 1983ApJS...51..171P Sanduleak & Pesch, Case survey. II. 1984ApJS...55..517S Pesch & Sanduleak, Case survey. III. 1986ApJS...60..543P Sanduleak & Pesch, Case survey. IV. 1987ApJS...63..809S Pesch & Sanduleak, Case survey. V. 1988ApJS...66..297P Sanduleak., Case survey. VI. 1988ApJS...66..309S Sanduleak & Pesch, Case survey. VII. 1988ApJS...66..387S, Cat. J/ApJS/66/387 Sanduleak & Pesch, Case survey. VIII. 1989ApJS...70..163P Sanduleak & Pesch, Case survey. IX. 1989ApJS...70..173S Pesch & Sanduleak, Case survey. X. 1989ApJS...71..549P, Cat. J/ApJS/71/549 Sanduleak & Pesch, Case survey. XI. 1990ApJS...72..291S Pesch et al., Case survey. XII. 1991ApJS...76.1043P Stephenson et al., Case survey. XIII. 1992ApJS...82..471S MacConnell et al., Case survey. XIV. 1993ApJS...86..453M, Cat. J/ApJS/86/549 Pesch et al., Case survey. XV. 1995ApJS...98...41P Augarde et al., Case blue & emm. Gal. 1987A&A...185....4A
(End) James Marcout, Patricia Bauer [CDS] 26-Sep-1997
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

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