Mid-infrared spectroscopy of two luminous submillimeter galaxies at z~2.8

Details Mid-infrared spectroscopy of two luminous submillimeter galaxies at z~2.8 Mid-infrared spectroscopy of two luminous submillimeter galaxies at z~2.8

2005-04-20

arxiv.org/abs/astro-ph/0504431v1

Astrophys.J. 625 (2005) L83-L86

Astronomy and Astrophysics

Astrophysics

Accepted for publication in the Astrophysical Journal Letters. 12 pages, 3 eps figures

Scientific paper

10.1086/431217

Using the Infrared Spectrograph (IRS) on board the Spitzer Space Telescope, we have obtained rest frame mid-infrared spectroscopy of two bright submillimeter galaxies. SMMJ02399-0136 at z=2.81 shows a superposition of PAH emission features and a mid-infrared continuum, indicating significant and roughly equal contributions to its bolometric luminosity from star formation and from a Compton-thick AGN. We derive a new redshift of z=2.80 for MMJ154127+6616 from the IRS spectrum and find this object is dominated by starburst PAH emission. The rest frame mid- to far-infrared spectral energy distributions are consistent with these submillimeter galaxies being scaled up versions of local ultraluminous infrared galaxies. The mid-infrared spectra support the scenario that submillimeter galaxies are sites of extreme star formation and represent a key phase in the formation of massive galaxies.

Affiliated with

Also associated with

No associations

Rating

Mid-infrared spectroscopy of two luminous submillimeter galaxies at z~2.8 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 Mid-infrared spectroscopy of two luminous submillimeter galaxies at z~2.8, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mid-infrared spectroscopy of two luminous submillimeter galaxies at z~2.8 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-516467