J/ApJ/902/26 HST opt. & H-band obs. of Cepheids in NGC4151 (Yuan+, 2020)
The Cepheid distance to the Seyfert 1 galaxy NGC 4151.
Yuan W., Fausnaugh M.M., Hoffmann S.L., Macri L.M., Peterson B.M.,
Riess A.G., Bentz M.C., Brown J.S., Bonta E.D., Davies R.I., De Rosa G.,
Ferrarese L., Grier C.J., Hicks E.K.S., Onken C.A., Pogge R.W.,
Storchi-Bergmann T., Vestergaard M.
<Astrophys. J., 902, 26 (2020)>
=2020ApJ...902...26Y 2020ApJ...902...26Y
ADC_Keywords: Photometry, HST; Optical; Photometry, infrared;
Stars, variable; Galaxies, nearby
Keywords: Cepheid variable stars ; Distance measure ; Cepheid distance ;
AGN host galaxies ; Hubble Space Telescope ; HST photometry ;
Time series analysis ; Near infrared astronomy ;
Optical observatories ; Distance indicators ; Galaxy distances
Abstract:
We derive a distance of 15.8±0.4Mpc to the archetypal Seyfert 1
galaxy NGC 4151 based on the near-infrared Cepheid period-luminosity
relation and new Hubble Space Telescope multiband imaging. This
distance determination, based on measurements of 35 long-period
(P>25d) Cepheids, will support the absolute calibration of the
supermassive black hole mass in this system, as well as studies of the
dynamics of the feedback or feeding of its active galactic nucleus.
Description:
We acquired multiband time-series images of NGC 4151 using the Wide
Field Camera 3 (WFC3) on board HST.
In order to search for Cepheids and measure their periods, we made use
of the long-pass optical filter F350LP to phase the light curves with
12 epochs (spanning 2015 December 7 to 2016 February 18) across a
baseline of 74 days. We also observed NGC 4151 in F555W (3 epochs),
F814W (3 epochs), and F160W (6 epochs). The per-epoch exposure times
were 1050s, 1100s, 1100s, and 1106s for F350LP, F555W, F814W, and
F160W, respectively.
See Section 2.1.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 66 57 Secondary standards
table4.dat 141 136 Cepheid properties
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See also:
B/hst : HST Archived Exposures Catalog (STScI, 2007)
J/AZh/71/189 : Gas Kinematics from Halpha line in NGC 4151 (Sergeev, 1994)
J/A+A/324/904 : NGC 4151 line-continuum diagram sequences (Malkov+ 1997)
J/PAZh/25/403 : Optical variability of NGC 4151 (Lyuty+, 1999)
J/PAZh/27/83 : Nuclear activity of NGC 4151 in 1989-2000 (Doroshenko+, 2001)
J/ApJ/670/105 : Velocity profile of NGC 4151 (Onken+, 2007)
J/other/ChA+A/32.351 : Accretion rate distributions of AGNs (Bao+, 2008)
J/A+A/486/99 : Long-term spectral variability of NGC4151 (Shapovalova+, 2008)
J/A+A/544/A18 : Radio galaxies of the local universe (van Velzen+, 2012)
J/A+A/587/A160 : 3.6um S4G Galactic bars characterization (Diaz-Garcia+, 2016)
J/ApJ/840/41 : X-ray/UV Swift monitoring of NGC 4151 (Edelson+, 2017)
J/AJ/160/199 : Distances for ∼12000 galaxies with NED-D (Steer, 2020)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- ID [35238/421651] Identifier
8- 17 F10.6 deg RAdeg [182.61/182.66] Right Ascension (J2000) (1)
19- 27 F9.6 deg DEdeg [39.38/39.43] Declination (J2000) (1)
29- 34 F6.3 mag F350LPmag [21.9/24.7] HST/WFC3 F350LP band apparent
magnitude
36- 40 F5.3 mag e_F350LPmag [0.009/0.03] Uncertainty in F350LPmag
42- 47 F6.3 mag F555Wmag [22/26.2] HST/WFC3 F555W band apparent
magnitude
49- 53 F5.3 mag e_F555Wmag [0.01/0.06] Uncertainty in F555Wmag
55- 60 F6.3 mag F814Wmag [20.9/25] HST/WFC3 F814W band apparent
magnitude
62- 66 F5.3 mag e_F814Wmag [0.01/0.07] Uncertainty in F814Wmag
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Note (1): Coordinates are based on the WCS solution of the first F350LP image.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 7 I7 --- ID [36962/3223512] Cepheid identifier
9- 18 F10.6 deg RAdeg [182.61/182.67] Right Ascension
in decimal degrees (J2000) (1)
20- 28 F9.6 deg DEdeg [39.38/39.43] Declination in decimal
degrees (J2000) (1)
30- 35 F6.3 d Per [10.2/82.61] Period
37- 41 F5.3 mag Amp [0.39/1.36] Amplitude in F350LP band
43- 48 F6.3 mag F350LPmag [24.44/27.92] Mean HST/WFC3 F350LP band
magnitude (2)
50- 54 F5.3 mag e_F350LPmag [0.018/0.21] Uncertainty in F350LPmag
56- 61 F6.3 mag F555Wmag [24.6/28.7] Mean HST/WFC3 F555W band
magnitude (2)
63- 67 F5.3 mag e_F555Wmag [0.03/0.4] Uncertainty in F555Wmag
69- 74 F6.3 mag F814Wmag [23.54/27.3] Mean HST/WFC3 F814W band
magnitude (2)
76- 80 F5.3 mag e_F814Wmag [0.036/0.37] Uncertainty in F814Wmag
82- 87 F6.3 mag F160Wmag [22.4/24.9]? Mean HST/WFC3 F160W band
magnitude (2)
89- 93 F5.3 mag e_F160Wmag [0.1/0.6]? Uncertainty in F160Wmag
95-100 F6.2 ct/s/arcsec2 SB [178/405]? F160W band local surface
brightness
102-102 A1 --- F Flag (3)
104-109 F6.3 mag DelF555W [-0.03/0.07] F555W band crowding
correction
111-115 F5.3 mag e_DelF555W [0.018/0.2] Uncertainty in DelF555W
117-122 F6.3 mag DelF814W [-0.021/0.09] F814W band crowding
correction
124-128 F5.3 mag e_DelF814W [0.02/0.3] Uncertainty in DelF814W
130-135 F6.3 mag DelF160W [-0.04/0.3]? F160W band crowding
correction
137-141 F5.3 mag e_DelF160W [0.1/0.6]? Uncertainty in DelF160W
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Note (1): Coordinates are based on the WCS solution of the first F350LP image.
Note (2): Fully calibrated Vega magnitudes, including crowding corrections.
Note (3): Flag as follows:
s = Cepheids rejected due to short period (96 occurrences);
r = rejected due to high SB (11 occurrences);
o = possible RV Tauri variable (1 occurrence);
c = rejected due to red color (4 occurrences);
h = used for NIR (WH) period-luminosity relation (24 occurrences).
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 21-Jan-2022