Physics
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nascp3084..349w&link_type=abstract
In NASA, Ames Research Center, The Interstellar Medium in External Galaxies: Summaries of Contributed Papers p 349-351 (SEE N91-
Physics
Elliptical Galaxies, Far Infrared Radiation, Interstellar Matter, Molecular Gases, Star Formation, Carbon Monoxide, Continuums, Cooling, Galactic Clusters, Hydrogen, Intergalactic Media, Losses, Millimeter Waves, Morphology, Parabolic Reflectors, Radio Physics, Stellar Mass
Scientific paper
Elliptical (E) and lenticular (S0) galaxies lack the substantial interstellar medium (ISM) found in the star-forming spiral galaxies. However, significant numbers of E and S0 galaxies are known to contain detectable amounts of interstellar matter (e.g., Jura 1988). Thus, it is worth investigating whether these galaxies are currently able to form stars from their ISM, or whether they should be consigned to the dustbin of inert objects (Thronson and Bally 1987). The results strongly imply that current star formation is responsible for NGC 4710's far infrared and radio continuum properties. If this is indeed the case, then one expects this star formation to be fueled by molecular gas, which is presumably dominated by H2 and can be traced by the CO-12 J=1 to 0 line. Both Kenney and Young (1988) and Sage and Wrobel (1989) have detected such an emission line from NGC 4710, and infer the presence of more than 108 solar mass of H2. The origin of the molecular gas in NGC 4710 remains a mystery. The galaxy is very deficient in HI (Kenney and Young, in preparation), suggesting that it originally was a spiral galaxy from which the outer, mainly atomic, gas was stripped by the ram pressure of the Virgo Cluster's intracluster medium, leaving only a central interstellar medium (ISM) rich in molecular gas. Alternatively, the CO may have originated via stellar mass loss with subsequent cooling, cooling flows, or capture from a gas-rich companion. Information on the morphology and kinematics of the CO can be compared with that of the galaxy's other gases and stars to distinguish among these various possible origins for the molecular gas. Major axis CO mapping with single dishes indicate an unresolved source. Thus, a millimeter array is currently being used to image NGC 4710 in CO to provide the needed morphological and kinematical data.
No associations
LandOfFree
Current star formation in S0 galaxies: NGC 4710 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 Current star formation in S0 galaxies: NGC 4710, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current star formation in S0 galaxies: NGC 4710 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1096127