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J/AZh/71/189    Gas Kinematics from Halpha line in NGC 4151     (Sergeev, 1994)

Gas kinematics: estimation of the broad-line region size and the central source mass from the profile variability of the Hα line in NGC 4151 Sergeev S.G. <Astron. Zh. 71, 189 (1994)> =1994AZh....71..189S
ADC_Keywords: Active gal. nuclei ; Spectroscopy Description: The nucleus spectra of the Seyfert galaxy NGC 4151 obtained in 1988-1991 were analyzed in order to study the profile variability of the Ha line resulting from ionizing continuum flux variations. At the time of this galaxy monitoring, the response of the integral flux of the Ha line was almost linear and the average profile shape did not change by more than 5%. Object: ---------------------------------------------------------------- RA (2000) DE Designation ---------------------------------------------------------------- 12 10 32.5 +39 24 20 NGC 4151 ---------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 41 79 Light curves of continuum and Hα line table3.dat 25 68 Photometry
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 8 A8 "DD/MM/YY" Date Observation date 12- 13 I2 h Time Universal time 16- 25 F10.2 d JD [2447216/2448332] Julian date of observation 28- 31 F4.2 10-16W/m2/nm Fcont Flux in continuum at wavelengths 6563 Å 34- 37 F4.2 10-14W/m2 F6563A Flux in H(alpha) for 6449-6695 Å 40- 41 I2 --- SN Signal to noise ratio per pixel in continuum
Note: 10-16W/m2/nm = 10-14 erg/cm2/s/A in original 10-14W/m2 = 10-11 erg/cm2/s in original Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 9 F9.1 d JD [2447183/2448473] Julian date of observation 12- 16 F5.2 mag Vmag V magnitude 19- 22 F4.2 0.1uW/m2/m Fcont Flux in continuum at 6563 A 25 I1 --- Notes [1/2] Notes (1)
Note (1):1: Data of Lyutyi (1992, private communication) 2: Data of Merkulova and Metik (1993IzKry..87..135M)

(End) Veta Avedisova [INASAN] 30-Dec-1996
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