Formation of the First Stars and Quasars

Details Formation of the First Stars and Quasars Formation of the First Stars and Quasars

1998-09-28

arxiv.org/abs/astro-ph/9809365v1

Adv.Space Res. 23 (1999) 915-924

Astronomy and Astrophysics

Astrophysics

10 pages, 5 figures included. Invited talk at the 32nd COSPAR Scientific Assemby, 15-17 July, 1998, Nagoya, Japan; to appear i

Scientific paper

10.1016/S0273-1177(99)00216-1

We review observable signatures of the first generation of stars and low-luminosity quasars, including the metal enrichment, radiation background, and dust opacity/emission that they produce. We compute the formation history of collapsed baryonic halos based on an extension of the Press-Schechter formalism, incorporating the effects of pressure and H2-dissociation, and calibrate this history to observational data at redshifts z<5. To be consistent with the lack of faint point-sources in the Hubble Deep Field, we introduce a lower limit of 75 km/s for the circular velocities of halos harboring central black holes. Based on our models, we predict that future satellite instruments such as MAP, Planck, and NGST will be able to detect the signatures small star clusters and low-luminosity quasars at redshifts exceeding z=10.

Affiliated with

Also associated with

No associations

Rating

Formation of the First Stars and Quasars 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 Formation of the First Stars and Quasars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Formation of the First Stars and Quasars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-481763