Fabry - Perot Absorption - Line Spectroscopy of NGC 7079
نویسنده
چکیده
We report on absorption-line Fabry-Perot spectroscopy of the SB0 galaxy NGC 7079. Our data allow us to determine velocity and dispersion maps, which compare well with the results of slit observations. Our goals are to obtain a bar pattern speed and to determine the velocity ellipsoid as a function of radius; this is work in progress.
منابع مشابه
v 1 7 Ja n 20 04 Fabry - Perot Absorption - Line Spectroscopy of NGC 7079 : Kinematics and Bar Pattern Speed 1
We present Fabry-Perot absorption-line spectroscopy of the SB0 galaxy NGC 7079. This is the first use of Fabry-Perot techniques to measure the twodimensional stellar kinematics of an early-type disk galaxy. We scan the infrared CaII line using the Rutgers Fabry-Perot (RFP), to obtain kinematic data extending to I-band surface brightness μI ≃ 21 mag arcsec , in a field of radius ∼ 40. The kinema...
متن کاملThe Bar Pattern Speed in NGC 7079
We have used 2D Fabry-Perot absorption-line spectroscopy of the SB0 galaxy NGC 7079 to measure its bar pattern speed, Ωp. As in all previous cases of bar pattern speed measurements, we find a fast bar. We estimate that NGC 7079 has been undisturbed for at least the past Gyr or roughly 8 bar rotations, long enough for the bar to have slowed down significantly through dynamical friction if the di...
متن کاملar X iv : a st ro - p h / 04 01 09 3 v 1 7 J an 2 00 4 Fabry - Perot Absorption - Line Spectroscopy of NGC 7079 : Kinematics and Bar Pattern Speed 1
We present Fabry-Perot absorption-line spectroscopy of the SB0 galaxy NGC 7079. This is the first use of Fabry-Perot techniques to measure the twodimensional stellar kinematics of an early-type disk galaxy. We scan the infrared CaII line using the Rutgers Fabry-Perot (RFP), to obtain kinematic data extending to I-band surface brightness μI ≃ 21 mag arcsec , in a field of radius ∼ 40. The kinema...
متن کاملA Massive Object in the Core of NGC 5055 ?
In a global kinematical study of NGC 5055 using high resolution Fabry-Perot interferometry, intriguing spectral line prooles have been observed in the center of the galaxy. These prooles seem to indicate a rapidly rotating disk with a radius near 365 pc and tilted 50 deg with respect to the major axis of the galaxy. In the hypothesis of a massive dark object, a naive keplerian estimate gives a ...
متن کاملv 1 2 1 D ec 1 99 8 A massive object in the core of NGC 5055 ?
In a global kinematical study of NGC 5055 using high resolution Fabry-Perot, intriguing spectral line profiles have been observed in the center of the galaxy. These profiles seem to indicate a rapidly rotating disk with a radius near 365 pc and tilted 50 deg with respect to the major axis of the galaxy. In the hypothesis of a massive dark object, a naive keplerian estimate gives a mass around 1...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1999