Other
Scientific paper
Sep 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...206.3819l&link_type=abstract
American Astronomical Society Meeting 206, #38.19; Bulletin of the American Astronomical Society, Vol. 37, p.792
Other
Scientific paper
We present a deep VLA search for H I emission from the low-luminosity Virgo Cluster elliptical galaxy NGC 4476, which contains 1.1x108 solar masses of molecular gas in an undisturbed disk in regular rotation. No H I was detected. The total H I mass is less than 1.5x107 solar masses. If we compare our H I upper limit with the H2 content, we find that NGC 4476 is extremely deficient in H I compared with other galaxies detected in these two species. The H2/HI mass ratio for NGC 4476 is greater than 7, whereas typical H2/HI ratios for elliptical galaxies detected in both H I and H2 are less than 2. On the basis of this extreme H I deficiency and the intracluster medium density at the projected distance from M87, we argue that either NGC 4476 has undergone ram pressure stripping while traveling through the Virgo Cluster core or its average molecular gas density is larger and its interstellar UV field is smaller than in typical spiral galaxies. NGC 4476 is located 12 arcminutes in projection from M87, which causes extreme continuum confusion problems. We also discuss in detail the techniques used for continuum subtraction. The spectral dynamic range of our final image is 50,000 to 1. This work was partially supported by NSF grant AST 00-74709 to New Mexico Institute of Mining and Technology and NSF grant AST 00-98249 to Columbia University.
Lucero Danielle M.
van Gorkom Jacqueline H.
Young Lisa Marie
No associations
LandOfFree
Ram Pressure Stripping in the Low-Luminosity Virgo Cluster Elliptical Galaxy NGC 4476 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Ram Pressure Stripping in the Low-Luminosity Virgo Cluster Elliptical Galaxy NGC 4476, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ram Pressure Stripping in the Low-Luminosity Virgo Cluster Elliptical Galaxy NGC 4476 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1300320