Search: WFRF:(Gallerani S.) >
A physical model fo...
A physical model for [C II] line emission from galaxies
-
- Ferrara, A. (author)
- Scuola Normale Super Pisa, Piazza Cavalieri 7, I-56126 Pisa, Italy.;Univ Tokyo, Kavli Inst Phys & Math Universe WPI, Kashiwa, Chiba 2778583, Japan.
-
- Vallini, Livia (author)
- Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Leiden University, the Netherlands,Leiden Univ, Leiden Observ, POB 9500, NL-2300 RA Leiden, Netherlands.;Nordita SU
-
- Pallottini, A. (author)
- Scuola Normale Super Pisa, Piazza Cavalieri 7, I-56126 Pisa, Italy.;Ctr Fermi, Museo Stor Fis, Piazza Viminale 1, I-00184 Rome, Italy.;Ctr & Ric Enrico Fermi, Piazza Viminale 1, I-00184 Rome, Italy.
-
show more...
-
- Gallerani, S. (author)
- Scuola Normale Super Pisa, Piazza Cavalieri 7, I-56126 Pisa, Italy.
-
- Carniani, S. (author)
- Scuola Normale Super Pisa, Piazza Cavalieri 7, I-56126 Pisa, Italy.
-
- Kohandel, M. (author)
- Scuola Normale Super Pisa, Piazza Cavalieri 7, I-56126 Pisa, Italy.
-
- Decataldo, D. (author)
- Scuola Normale Super Pisa, Piazza Cavalieri 7, I-56126 Pisa, Italy.
-
- Behrens, C. (author)
- Scuola Normale Super Pisa, Piazza Cavalieri 7, I-56126 Pisa, Italy.;Georg August Univ Gottingen, Inst Astrophys, Friedrich Hundt Pl 1, D-37077 Gottingen, Germany.
-
show less...
-
Scuola Normale Super Pisa, Piazza Cavalieri 7, I-56126 Pisa, Italy;Univ Tokyo, Kavli Inst Phys & Math Universe WPI, Kashiwa, Chiba 2778583, Japan. Nordiska institutet för teoretisk fysik (Nordita) (creator_code:org_t)
- 2019-07-25
- 2019
- English.
-
In: Monthly notices of the Royal Astronomical Society. - : OXFORD UNIV PRESS. - 0035-8711 .- 1365-2966. ; 489:1, s. 1-12
- Related links:
-
https://scholarlypub...
-
show more...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
https://urn.kb.se/re...
-
show less...
Abstract
Subject headings
Close
- A tight relation between the [C II] 158 mu m line luminosity and star formation rate is measured in local galaxies. At high redshift (z > 5), though, a much larger scatter is observed, with a considerable (15-20 per cent) fraction of the outliers being [C II]-deficient. Moreover, the [C II] surface brightness (Sigma([C II])) of these sources is systematically lower than expected from the local relation. To clarify the origin of such [C II]-deficiency, we have developed an analytical model that fits local [C II] data and has been validated against radiative transfer simulations performed with CLOUDY. The model predicts an overall increase of Sigma([C II]) with Sigma(SFR). However, for Sigma(SFR) greater than or similar to 1M(circle dot) yr(-1) kpc(-2), Sigma([C II]) saturates. We conclude that underluminous [C II] systems can result from a combination of three factors: (a) large upward deviations from theKennicutt-Schmidt relation (kappa(s) >> 1), parametrized by the 'burstiness' parameter kappa(s); (b) low metallicity; (e.g. CR7). Observations of [C II] emission alone cannot break the degeneracy among the above three parameters; this requires additional information coming from other emission lines (e.g. [OIII]88 mu m, C III]1909 degrees, CO lines). Simple formulae are given to interpret available data for low- and high- z galaxies.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- photodissociation region (PDR)
- galaxies: high-redshift
- galaxies: ISM
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database