Detection of Intracluster Planetary Nebulae in the Coma Cluster

Details Detection of Intracluster Planetary Nebulae in the Coma Cluster Detection of Intracluster Planetary Nebulae in the Coma Cluster

2005-01-28

arxiv.org/abs/astro-ph/0501630v1

Astrophys.J. 621 (2005) L93-L96

Astronomy and Astrophysics

Astrophysics

4 pages, 4 figures, to appear in ApJ Letters

Scientific paper

10.1086/429221

[OIII] lambda 5007AA emission lines of 16 intracluster planetary nebulae candidates in the Coma cluster were detected with a Multi-Slit Imaging Spectroscopy (MSIS) technique using FOCAS on the Subaru telescope. The identification of these faint emission sources as PNe is supported by (i) their point-like flux distribution in both space and wavelength, with tight limits on the continuum flux; (ii) the identification of the second [OIII] lambda 4959 line in the only object at high enough velocity that this line too falls into the filter bandpass; (iii) emission line fluxes consistent with PNe at 100 Mpc distance, in the range 2.8 x 10^{-19} - 1.7 x 10^{-18} erg/s/cm^2; and (iv) a narrow velocity distribution approximately centered on the systemic velocity of the Coma cluster. Comparing with the velocities of galaxies in our field, we conclude that the great majority of these candidates would be intracluster PNe, free floating in the Coma cluster core. Their velocity dispersion is ~760 km/s, and their mean velocity is lower than that of the galaxies. The velocity distribution suggests that the intracluster stellar population has different dynamics from the galaxies in the Coma cluster core.

Affiliated with

Also associated with

No associations

Rating

Detection of Intracluster Planetary Nebulae in the Coma Cluster 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 Detection of Intracluster Planetary Nebulae in the Coma Cluster, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of Intracluster Planetary Nebulae in the Coma Cluster will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-286829