NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Fabry-Perot images of NGC 1275 and its puzzling high-velocity systemThe Fabry-Perot imager is used to obtain a velocity sequence of calibrated narrow-band CCD images to cover 3000 km/s velocity space between the redshifted H-alpha emission lines of NGC 1275, its extended associated system of low-velocity (LV) filaments, and the high-velocity (HV) system of knots, projected on the same line of sight in the sky. The lack of intermediate-velocity emission-line gas between the two systems leads to an upper limit of 1.5 x 10 exp -16 ergs/sq cm s sq arcsec (3 sigma) on stripped ionized gas due to the dynamical interaction between NGC 1275 and its HV companion galaxy. It also confirms previous reports that the level of continuum light arising from stellar and nonstellar sources must be very low in otherwise bright, strongly concentrated emission-line knots with unresolved diameters of 425/h pc. The H-alpha luminosities of the emission-line regions of the two systems were measured and star formation rates derived in order to investigate quantitatively the physical relation between the HV galaxy, NGC 1275, and the surrounding cooling flow filaments.
Document ID
19920050385
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1086/171153
Authors
Caulet, Adeline (NASA Goddard Space Flight Center Greenbelt, MD; ESA, Astrophysics Div., Noordwijk, Netherlands; European Southern Observatory, Garchi, United States)
Woodgate, Bruce E. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Brown, Larry W. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Gull, Theodore R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hintzen, Paul (NASA Goddard Space Flight Center Greenbelt, MD; Nevada, University, Las Vegas, United States)
Lowenthal, James D. (Steward Observatory Tucson, AZ, United States)
Oliversen, Ronald J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Ziegler, Michael M. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 15, 2013
Publication Date
April 1, 1992
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 388
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
92A33009
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.

Related Records

There are no records associated with this record.
No Preview Available