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J/ApJ/523/540   VI photometry of new Cepheids in NGC 3319  (Sakai+, 1999)

The Hubble SPACE TELESCOPE extragalactic distance scale key project. XXIII. The discovery of cepheids in NGC 3319. Sakai S., Ferrarese L., Kennicutt R.C., Graham J.A., Silbermann N.A., Mould J .R., Freedman W.L., Bresolin F., Ford H.C., Gibson B.K., Han M., Harding P., Hoessel J.G., Huchra J.P., Hughes S.M., Illingworth G.D., Kelson D., Macri L., Madore B.F., Phelps R.L., Saha A., Sebo K.M., Stetson P.B., Turner A. <Astrophys. J. 523, 540 (1999)> =1999ApJ...523..540S
ADC_Keywords: Stars, variable ; Photometry Mission_Name: HST Keywords: Cepheids - galaxies: distances and redshifts - galaxies: individual (NGC 3319) Abstract: The distance to NGC 3319 has been determined from Cepheid variable stars as part of the Hubble Space Telescope Key Project on the Extragalactic Distance Scale. Thirteen and four epochs of observations, using filters F555W (V) and F814W (I), respectively, were made with the Wide Field Planetary Camera 2. Thirty-three Cepheid variables between periods of 8 and 47 days were discovered. Adopting a Large Magellanic Cloud distance modulus of 18.50±0.10 mag and extinction of E(V-I)=0.13 mag, a true reddening-corrected distance modulus (based on an analysis employing the ALLFRAME software package) of 30.78 ±0.14 (random) ±0.10 (systematic) mag and the extinction of E(V-I)=0.06 mag were determined for NGC 3319. This galaxy is the last galaxy observed for the HST Ho Key Project. Objects: -------------------------------------------- RA (2000) DE Designation(s) -------------------------------------------- 10 39 09.86 +41 41 15.9 NGC 3319 = UGC 5789 -------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table4.dat 41 33 Cepheid positions table5.dat 28 858 Cepheid V magnitudes and errors table6.dat 28 264 Cepheid I magnitudes and errors table7.dat 93 33 Cepheid mean magnitudes and periods
See also: J/ApJ/463/26 : Extragalactic Distance Scale Key Project. III (Kelson+ 1996) J/ApJ/507/655 : VI photometry of new Cepheids in NGC 2541 (Ferrarese+, 1998) J/ApJ/508/491 : M101 Cepheids (Stetson+, 1998) J/ApJ/521/155 : New Cepheids and distance to NGC 4535 ((Macri+, 1999) J/ApJ/514/614 : VI photometry of new Cepheids in NGC 3198 (Kelson+, 1999) J/ApJ/529/723 : VI photometry of Cepheids (Gibson+, 2000) Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 3 A3 --- Name Cepheid Name 6 I1 --- Chip WFPC chip cepheid is located on (1 is i the PC chip) 8- 12 F5.1 pix Xpix X pixel coordinate 14- 18 F5.1 pix Ypix Y pixel coordinate 20- 21 I2 h RAh Right Ascension (J2000) 23- 24 I2 min RAm Right Ascension (J2000) 26- 30 F5.2 s RAs Right Ascension (J2000) 31 A1 --- DE- Declination sign 32- 33 I2 deg DEd Declination (J2000) 35- 36 I2 arcmin DEm Declination (J2000) 38- 41 F4.1 arcsec DEs Declination (J2000)
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 3 A3 --- Name Cepheid Name 7- 15 F9.2 d JD Julian day 19- 23 F5.2 mag Vmag ? V band magnitude 25- 28 F4.2 mag e_Vmag ? Uncertainty in Vmag
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 3 A3 --- Name Cepheid Name 7- 15 F9.2 d JD Julian day 19- 23 F5.2 mag Imag I band magnitude 25- 28 F4.2 mag e_Imag I Uncertainty in Imag
Byte-by-byte Description of file: table7.dat
Bytes Format Units Label Explanations
1- 3 A3 --- Name Cepheid Name 9 I1 --- Chip WFPC chip cepheid is located on (1 is i the PC chip) 11 A1 --- f_Name [yn] Indicates if Cepheid was (y) or was not (n) used in the distance determination 17- 21 F5.2 mag Vmag Intensity weighted V band magnitude 27- 31 F5.2 mag VmagP Phase weighted V band magnitude 37- 41 F5.2 mag Imag Intensity weighted I and magnitude 47- 51 F5.2 mag ImagP Phase weighted I band magnitude 57- 61 F5.2 mag ICorr Additive correction applied to the I band weighted magnitudes to compensate for their limited phase coverage 65 A1 --- l_Period Limit on Period 66- 69 F4.1 d Period Cepheid period 71- 93 A23 --- Text Cepheid comments
History: From the ApJ electronic edition References: (Paper I) Freedman+ 1994ApJ...427..628F (Paper II) Hughes+ 1994ApJ...428..143H (Paper III) Kelson+ 1996ApJ...463...26K, Cat. J/ApJ/463/26 (Paper IV) Ferrarese+ 1996ApJ...464..568F (Paper VI) Silbermann+ 1996ApJ...470....1S (Paper VII) Graham+ 1997ApJ...477..535G (Paper VIII) Rawson+ 1997ApJ...490..517R (Paper IX) Phelps+ 1998ApJ...500..763P (Paper X) Hughes+ 1998ApJ...501...32H (Paper XI) Turner+ 1998ApJ...505..207T (Paper XII) Ferrarese+ 1998ApJ...507..655F, Cat. J/ApJ/507/655 (Paper XIII) Kennicutt+ 1998ApJ...498..181K (Paper XIV) Silbermann+ 1999ApJ...515....1S (Paper XV) Madore+ 1999ApJ...515...29M (Paper XVI) Stetson+ 1998ApJ...508..491S (Paper XVII) Gibson+ 1999ApJ...512...48G (Paper XVIII) Macri+ 1999ApJ...521..155M, Cat. J/ApJ/521/155 (Paper XIX) Kelson+ 1999ApJ...514..614K (Paper XX) Graham+ 1999ApJ...516..626G (Paper XXI) Mould+ 2000ApJ...528..655M (Paper XXII) Prosser+ 1999ApJ...525...80P (Paper XXIV) Sakai+ 2000ApJ...529..698S (Paper XXV) Gibson+ 2000ApJ...529..723G, Cat. J/ApJ/529/723 (Paper XXVI) Ferrarese+ 2000ApJ...529..745F (Paper XXVII) Kelson+ 2000ApJ...529..768K (Paper XXVIII) Mould+ 2000ApJ...529..786M
(End) Greg Schwarz [AAS] 13-Mar-2000
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