VII/36 Galaxy Redshifts (Rood 1980)
A Catalog of Galaxy Redshifts Rood H.J. <unpublished (1980)>
ADC_Keywords: Redshifts ; Galaxy catalogs Description: The Catalog of Galaxy Redshifts was compiled by Dr. Rood to enter the most accurate redshift for each entry in the Uppsala General Catalog of Galaxies below 15000 km/s, plus some fainter galaxies in the fields of rich clusters, plus some southern galaxies. The catalog is 99 percent complete for declinations north of -2.5deg and blue magnitude (Pmag) brighter than 13. The present documentation is mostly adapted from the "Documentation of the Machine-Readable Version of the Catalog of Galaxy Redshifts" by Theresa A. Nagy and Robert S. Hill, May 1981, prepared for NASA GSFC, Greenbelt, No SSD-T-5069-0013-81. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file catalog 90 3981 The catalogue of Galaxy Redshifts
Byte-by-byte Description of file: catalog
Bytes Format Units Label Explanations
1- 4 I4 --- Seq [1-3981]+ Sequential number 6- 11 A6 --- UGC Uppsala General Catalogue of Galaxies name (1) 13- 20 A8 --- OtherName Other galaxy identification (2) 22- 23 I2 h RAh Right Ascension 1950 (hours) (3) 25- 28 F4.1 min RAm Right Ascension 1950 (minutes) (3) 30 A1 --- DE- Declination 1950 (sign) (3) 31- 32 I2 deg DEd Declination 1950 (degrees) (3) 34- 35 I2 arcmin DEm Declination 1950 (minutes) (3) 37- 40 F4.1 mag Pmag ?=99.9 Blue magnitude (4) 42 I1 --- zFlag [0/1] '1' for discrepant redshifts (5) 44 I1 --- reHVel [0/3] Indication on origin of e_HVel (6) 46- 50 I5 km/s HVel Heliocentric redshift (7) 52- 54 I3 km/s e_HVel The rms error of the redshifts (8) 56 A1 --- ueHVel [*] An asterisk means uncertain rms error 58 A1 --- neHVel [-] A dash indicates a rms error from the redshift source and not newly derived. 60- 64 I5 km/s V0 Redshift relative to the Local Group (9) 66- 70 F5.1 deg GLON Galactic longitude 72- 76 F5.1 deg GLAT Galactic latitude 78- 90 A13 --- r_HVel Coded source of the redshift (10)
Note (1): from Nilson, P.N. 1973. Uppsala Observatory Annals, Volume 6) and Supplement (Nilson, P.N. 1974. Catalogue of Selected Non-UGC Galaxies, Uppsala Observatory Report #5) from the Fisher and Tully (redshift catalogue submitted to ApJS). The UGC is only available for Northern galaxies and the Supplement number has an "A" as the first character. All identifiers are left justified in this field. Note (2): OtherName includes: N = New General Catalogue (NGC), I = Index Catalogue (IC), or A = Anonymous designations from the Reference Catalogue of Bright Galaxies (RC2) 3C = Third Cambridge number or other identification found from the source material Note (3): Equatorial coordinates are from Fisher and Tully, other source or the UGC. Note (4): the Blue magnitude is from the Catalogue of Galaxies and Clusters of Galaxies (Zwicky, F. et al. 1960-1968), or estimated from other published magnitudes through an empirical relation, or estimated by the source of the redshift (r_HVel), or estimated by Nilson for the UGC. An individual galaxy in a double galaxy system with Zwicky magnitude Pmag is assigned the magnitude Pmag+0.7. For entries which did not have magnitudes, a value of 99.9 was inserted in these bytes. Note (5): this byte is set to 1 if the redshift of the given source (r_HVel) differs from another source by more than three times the combined rms error of the redshift determinations, or by more than about 300 km/s. This information is not complete, i.e. some discordant redshifts are not indicated. Otherwise, this byte is equal to zero. Note (6): This byte can have a value of one, two or three as follows: = 1, if the e_HVel (bytes 52-54) is directly from the source r_HVel (bytes 78-90) = 2, if the rms is taken as 1.42 times the σ1 for the source as given in the RC2 (G. de Vaucouleurs, A. de Vaucouleurs and H.G. Corwin, 1976), or is indirect or uncertain in other way = 3, if the rms error is of unknown reliability Otherwise, this byte is equal to zero. Note (7): the heliocentric velocity is from the source r_HVel (bytes 78-90) which generally had the smallest rms error. For galaxies with high quality 21cm redshift determinations (rms error about 8 km/s) from more than one source, the value given here is generally from the source which constituted the greater number of galaxy redshifts (i.e. first, Fisher and Tully; second, Shostak; see r_HVel in bytes 78-90). There are some negative values. Note (8): the rms if the redshift (HVel, bytes 46-50) as determined by the source (r_HVel, bytes 78-90) in units of km/s. High quality 21cm redshifts have been assigned by Rood the nominal ("and realistic") value of 8 km/s. Other rms errors are derived from an analysis of differences between redshifts from a given source and sources of high quality 21cm redshifts for galaxies in common (cf. ueHVel and neHVel in bytes 56 and 58). Note (9): the velocity relative to the Local Group is defined by V0 = HVel + 300 sin(GLON) cos(GLAT) Note (10): Most of the codes are taken directly from the "Index of Galaxy Spectra" (G.R. Gisler and E.D. Friel, 1979, Pachart Publishing House, Tucson, Arizona) and sometimes these codes are followed in parentheses by the code from "The Second Reference Catalogue of Bright Galaxies". * Major input lists: BGRC: Bright Galaxy Redshift Catalogue, J. Huchra (unpublished). IGS: Index of Galaxy Spectra, G.R. Gisler and E.D. Friel (1979, Pachart Publishing House, Tucson, Arizona) * Other codes are as follows: KOS: Kirshner, R.P., Oemler, A., and Schecter, P.L. 1978, AJ 83, 1549. (The redshifts from all 8 KOS fields, 4 Northern and 4 Southern are tabulated.) RFT: Rubin, V.C., Ford, K., Thonnard, N. 1980, ApJ 238, 471. K': Kelton, P.W. 1980, AJ 85, 89. VVN: de Vaucouleurs, G., de Vaucouleurs, A., and Nieto, J.L. 1979, AJ 84, 1811. TTI: Redshifts by Tarenghi and Tifft from the following reference: Tarenghi, M., Tifft, W.G., Chincarini, G., Rood, H.J., and Thompson, L.A. 1980, ApJ 234, 793. CR7: Redshifts by Chincarini and Rood from the following reference: Tarenghi, M., Tifft, W.G., Chincarini, G., Rood, H.J., and Thompson, L.A. 1980, ApJ 234, 793. CGH: Chincarini, G.L., Giovanelli, R., and Haynes, M.P. 1979, AJ 84, 1500. GH: Unpublished redshifts by R. Giovanelli and M. Haynes, or R. Giovanelli, M. Haynes, and G. Chincarini, or M. Haynes and M. Roberts. SU: Unpublished redshifts by W. Sullivan. BG11: Bottinelli, L., and Gouguenheim, L. 1977, A&A 60, L23. BG12: Bottinelli, L., and Gouguenheim, L. 1978, A&A 64, L3. BG13: Bottinelli, L., and Gouguenheim, L. 1979, A&A 74, 172. BG14: Bottinelli, L., and Gouguenheim, L. 1979, A&A 76, 176. BG15: Bottinelli, L., Gouguenheim, L., and Paturel, G. 1980, A&A (preprint). BG16: Chamaraux, P., Balkowski, C., and Gerard, E. 1980, A&A 83, 38. BG17: Bottinelli, L., Gouguenheim, L., and Paturel, G. 1980, A&A (preprint). T15: Tifft, W.G. 1974, ApJ 188, 221. T15: Tifft, W.G. 1978, ApJ 222, 54. FT*: Unpublished (submitted to the ApJS) redshifts by Fisher and Tully. S': Shostak, G.S. 1978, A&A 68, 321. DR': Dickel, J.R., and Rood, H.J. 1978, ApJ 223, 391. P': Peterson, S. 1979, ApJ 232, 20. DR": Dickel, J.R., and Rood, H.J. 1975, AJ 80, 584; and unpublished redshifts by J.R. Dickel. KG': Unpublished (as of 1976) redshifts by G. Knapp. TS': Thuan, T.X., and Seitzer, P.O. 1979, ApJ 231, 327. KS': Krumm, N., and Salpeter, E.E. 1979, ApJ 228, 64; Krumm, N., and Salpeter, E.E. 1979, AJ ]84, 1138; Helou, G., Salpeter, E.E., and Krumm, N. 1979, ApJ 228, L1. ZH3: Zwicky, F., and Humason, M.L. 1964, ApJ 139, 269.
Related data: VII/26D : Uppsala General Catlaogue of Galaxies (UGC): Nilson, P.N. 1973. Uppsala Observatory Annals, Vol. 6; and Supplement: Nilson, P.N. 1974, Catalogue of Selected Non-UGC Galaxies, Uppsala Observatory Report #5) VII/112 : Second Reference Catalogue of Bright Galaxies (RC2), G. de Vaucouleurs, A. de Vaucouleurs and H. G. Corwin, 1976 Historical Notes: * May 1981: Remarks and Modifications made at ADC, NASA / GSFC: The machine-readable version of the Catalog of Galaxy Redshifts (H.J. Rood, unpublished) was received from Dr. P.J.E. Peebles (Princeton University) in December of 1980. The catalogue was compiled by Dr. Rood to enter the most accurate redshift for each entry in the Uppsala General Catalogue of Galaxies below 15000 km/s, plus some fainter galaxies in fields of rich clusters, plus some southern galaxies (usually those with accurate 21cm redshifts). The catalogue is 99% complete for declinations north of -2.5deg and blue magnitude (Pmag) brighter than 13. Modifications were made to that machine-readable version as follows: 1. The first record initially was IC 5041 which did not have coordinates listed and hence as RA=0 and DE=0 it appeared first on the tape. The coordinates for this object (from machine-readable version of the Master Object List, R.S. Dixon, 1977 in "Compilation, Critical Evaluation, and Distribution of Stellar Data", ed. C. Jaschek and G.A. Wilkins, D. Reidel Publishing Company, Dordrecht-Holland, pp. 167ff) are RA=20h40.5, DE=-29d53' (epoch 1950 given to the same precision as the catalogue). This record was then put in its proper place in the catalogue before the remainder of the modifications were made. We would like to thank Dr. W. Warren for the suggestion to look in Dixon's Master Object List to find the coordinates for IC 5041. 2. A sequential counter was added to each record (#1 - 3981) which represents the order of the catalogue in order of increasing right ascension at epoch 1950.0. 3. For entries which did not have a value of the blue magnitude (Pmag) a value of 99.9 was entered. 4. The designations of uncertainty (parentheses "()") and not newly derived ("-") in the listing of the catalogue as received were not included in the machine-readable version. These have been added but in the form of a single asterisk ("*") or dash ("-") as ueHVel and neHVel in bytes 56 and 58. 5. The redshift relative to the Local Group V0 was not included on the machine-readable version. This quantity was subsequently computed by calculating galactic coordinates (GLON,GLAT) and utilizing the quantity of the redshift (HVel). Many of these computed values were compared with the list as sent by Rood and approximately 10% were found to differ by 1 km/s. This is probably due to differences between the galactic coordinates as computed at GSFC and the coordinates used by Peebles. We have chosen to retain our computed values since this would be consistent with the galactic coordinates give herein. 6. Since the galactic coordinates (GLON,GLAT) had to be computed to add the value of the redshift relative to the Local Group (V0), these have been retained in the machine-readable version for convenience. 7. The original logical record length was 80 bytes. A total of 16 blank bytes have been deleted from the original version but 26 bytes of additional data have been added, so that the new logical record length is 90 bytes. * 04-Oct-1995 Pmag value in record #3351 which was "****" set to "99.9"
(End) Francois Ochsenbein [CDS] 04-Oct-1995
(End) Francois Ochsenbein [CDS] 04-Oct-1995
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