The ALPINE-ALMA [CII] Survey: Size of Individual Star-forming Galaxies at z=4-6 and Their Extended Halo Structure
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Standard
The ALPINE-ALMA [CII] Survey : Size of Individual Star-forming Galaxies at z=4-6 and Their Extended Halo Structure. / Fujimoto, Seiji; Silverman, John D.; Bethermin, Matthieu; Ginolfi, Michele; Jones, Gareth C.; Le Fevre, Olivier; Dessauges-Zavadsky, Miroslava; Rujopakarn, Wiphu; Faisst, Andreas L.; Fudamoto, Yoshinobu; Cassata, Paolo; Morselli, Laura; Maiolino, Roberto; Schaerer, Daniel; Capak, Peter; Yan, Lin; Vallini, Livia; Toft, Sune; Loiacono, Federica; Zamorani, Gianni; Talia, Margherita; Narayanan, Desika; Hathi, Nimish P.; Lemaux, Brian C.; Boquien, Mederic; Amorin, Ricardo; Ibar, Edo; Koekemoer, Anton M.; Mendez-Hernandez, Hugo; Bardelli, Sandro; Vergani, Daniela; Zucca, Elena; Romano, Michael; Cimatti, Andrea.
I: Astrophysical Journal, Bind 900, Nr. 1, 1, 01.09.2020.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - The ALPINE-ALMA [CII] Survey
T2 - Size of Individual Star-forming Galaxies at z=4-6 and Their Extended Halo Structure
AU - Fujimoto, Seiji
AU - Silverman, John D.
AU - Bethermin, Matthieu
AU - Ginolfi, Michele
AU - Jones, Gareth C.
AU - Le Fevre, Olivier
AU - Dessauges-Zavadsky, Miroslava
AU - Rujopakarn, Wiphu
AU - Faisst, Andreas L.
AU - Fudamoto, Yoshinobu
AU - Cassata, Paolo
AU - Morselli, Laura
AU - Maiolino, Roberto
AU - Schaerer, Daniel
AU - Capak, Peter
AU - Yan, Lin
AU - Vallini, Livia
AU - Toft, Sune
AU - Loiacono, Federica
AU - Zamorani, Gianni
AU - Talia, Margherita
AU - Narayanan, Desika
AU - Hathi, Nimish P.
AU - Lemaux, Brian C.
AU - Boquien, Mederic
AU - Amorin, Ricardo
AU - Ibar, Edo
AU - Koekemoer, Anton M.
AU - Mendez-Hernandez, Hugo
AU - Bardelli, Sandro
AU - Vergani, Daniela
AU - Zucca, Elena
AU - Romano, Michael
AU - Cimatti, Andrea
PY - 2020/9/1
Y1 - 2020/9/1
N2 - We present the physical extent of [C II] 158 mu m line-emitting gas from 46 star-forming galaxies at z.=.4-6 from the ALMA Large Program to INvestigate C II at Early Times (ALPINE). Using exponential profile fits, we measure the effective radius of the [C II] line (r(e),([C II])) for individual galaxies and compare them with the rest-frame ultraviolet (UV) continuum (re, UV) from Hubble Space Telescope images. The effective radius r(e),([C II]) exceeds r(e, UV) by factors of similar to 2-3, and the ratio of r(e),([C II])/r(e, UV) increases as a function of M-star. We do not find strong evidence that the [C II] line, rest-frame UV, and far-infrared (FIR) continuum are always displaced over similar or equal to 1 kpc scale from each other. We identify 30% of isolated ALPINE sources as having an extended [C II] component over 10 kpc scales detected at 4.1s-10.9s beyond the size of rest-frame UV and FIR continuum. One object has tentative rotating features up to similar to 10 kpc, where the 3D model fit shows the rotating [C II]-gas disk spread over 4 times larger than the rest-frame UV-emitting region. Galaxies with the extended [C II] line structure have high star formation rate, high stellar mass (M-star), low Ly alpha equivalent width, and more blueshifted (redshifted) rest-frame UV metal absorption (Ly alpha line), as compared to galaxies without such extended [C II] structures. Although we cannot rule out the possibility that a selection bias toward luminous objects may be responsible for such trends, the star-formation-driven outflow also explains all these trends. Deeper observations are essential to test whether the extended [C II] line structures are ubiquitous to high-z star-forming galaxies.
AB - We present the physical extent of [C II] 158 mu m line-emitting gas from 46 star-forming galaxies at z.=.4-6 from the ALMA Large Program to INvestigate C II at Early Times (ALPINE). Using exponential profile fits, we measure the effective radius of the [C II] line (r(e),([C II])) for individual galaxies and compare them with the rest-frame ultraviolet (UV) continuum (re, UV) from Hubble Space Telescope images. The effective radius r(e),([C II]) exceeds r(e, UV) by factors of similar to 2-3, and the ratio of r(e),([C II])/r(e, UV) increases as a function of M-star. We do not find strong evidence that the [C II] line, rest-frame UV, and far-infrared (FIR) continuum are always displaced over similar or equal to 1 kpc scale from each other. We identify 30% of isolated ALPINE sources as having an extended [C II] component over 10 kpc scales detected at 4.1s-10.9s beyond the size of rest-frame UV and FIR continuum. One object has tentative rotating features up to similar to 10 kpc, where the 3D model fit shows the rotating [C II]-gas disk spread over 4 times larger than the rest-frame UV-emitting region. Galaxies with the extended [C II] line structure have high star formation rate, high stellar mass (M-star), low Ly alpha equivalent width, and more blueshifted (redshifted) rest-frame UV metal absorption (Ly alpha line), as compared to galaxies without such extended [C II] structures. Although we cannot rule out the possibility that a selection bias toward luminous objects may be responsible for such trends, the star-formation-driven outflow also explains all these trends. Deeper observations are essential to test whether the extended [C II] line structures are ubiquitous to high-z star-forming galaxies.
KW - Galaxy evolution
KW - Galaxy formation
KW - Circumgalactic medium
KW - Interstellar medium
KW - INTERSTELLAR-MEDIUM
KW - REDSHIFT
KW - SIMULATIONS
KW - EMISSION
KW - ROTATION
KW - FEEDBACK
KW - COSMOS
KW - DEEP
KW - GAS
U2 - 10.3847/1538-4357/ab94b3
DO - 10.3847/1538-4357/ab94b3
M3 - Journal article
VL - 900
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 1
M1 - 1
ER -
ID: 248806793