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J/ApJ/523/540 VI photometry of new Cepheids in NGC 3319 (Sakai+, 1999)
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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
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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 H_o_ Key Project.
Objects:
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RA (2000) DE Designation(s)
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10 39 09.86 +41 41 15.9 NGC 3319 = UGC 5789
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File Summary:
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FileName Lrecl Records Explanations
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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 91 33 Cepheid mean magnitudes and periods
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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)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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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)
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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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
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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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
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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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
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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
(Paper XXVI) Ferrarese+ 2000ApJ...529..745F
(Paper XXVII) Kelson+ 2000ApJ...529..768K
(Paper XXVIII) Mould+ 2000ApJ...529..786M
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(End) Greg Schwarz [AAS] 13-Mar-2000