Alma maging of the co (7−6) line emission in the submillimeter galaxy less 073 at z = 4.755
In this paper we present our imaging observations on the CO (7−6) line and its underlying continuum emission of the young submillimeter galaxy LESS 073 at redshift 4.755, using the Atacama Large Millimeter/submillimeter Array (ALMA). At the achieved resolution of ∼1 ′′ .2 × 0 ′′ .9 (8 × 6 kpc2 ), th...
| Główni autorzy: | , , , , , , , , , , |
|---|---|
| Format: | Journal article |
| Język: | English |
| Wydane: |
American Astronomical Society
2020
|
| _version_ | 1826258164085948416 |
|---|---|
| author | Zhao, Y Lu, N Diaz-Santos, T Gao, Y Xu, K Charmandaris, V Inami, H Rigopoulou, D Sanders, D Huang, J Wang, Z |
| author_facet | Zhao, Y Lu, N Diaz-Santos, T Gao, Y Xu, K Charmandaris, V Inami, H Rigopoulou, D Sanders, D Huang, J Wang, Z |
| author_sort | Zhao, Y |
| collection | OXFORD |
| description | In this paper we present our imaging observations on the CO (7−6) line and its underlying continuum
emission of the young submillimeter galaxy LESS 073 at redshift 4.755, using the Atacama Large
Millimeter/submillimeter Array (ALMA). At the achieved resolution of ∼1
′′
.2 × 0
′′
.9 (8 × 6 kpc2
),
the CO (7−6) emission is largely unresolved (with a deconvolved size of 1′′
.1(±0
′′
.5) × 0
′′
.9(±0
′′
.8).),
and the continuum emission is totally unresolved. The CO (7−6) line emission has an integrated
flux of 0.86 ± 0.08 Jy km s−1
, and a line width of 343 ± 40 km s−1
. The continuum emission has a
flux density of 0.51 mJy. By fitting the observed far-infrared (FIR) spectral energy distribution of
LESS 073 with a single-temperature modified blackbody function, we obtained a dust temperature
Tdust = 57.6 ± 3.5 K, 60-to-100 µm flux density ratio f60/f100 = 0.86 ± 0.08, and total infrared
luminosity LIR = (5.8±0.9)×1012 L⊙. The SED-fit-based f60/f100 is consistent with those estimated
from various line ratios as advocated by our earlier work, indicating that those proposed line-ratiobased method can be used to practically derive f60/f100 for high-z sources. The total molecular gas
mass of LESS 073 is (3.3 ± 1.7) × 1010 M⊙, and the inferred gas depletion time is about 43 Myr. |
| first_indexed | 2024-03-06T18:29:41Z |
| format | Journal article |
| id | oxford-uuid:09372c05-18d8-4bc3-a71e-3d2aec595a19 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:29:41Z |
| publishDate | 2020 |
| publisher | American Astronomical Society |
| record_format | dspace |
| spelling | oxford-uuid:09372c05-18d8-4bc3-a71e-3d2aec595a192022-03-26T09:17:05ZAlma maging of the co (7−6) line emission in the submillimeter galaxy less 073 at z = 4.755Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:09372c05-18d8-4bc3-a71e-3d2aec595a19EnglishSymplectic ElementsAmerican Astronomical Society2020Zhao, YLu, NDiaz-Santos, TGao, YXu, KCharmandaris, VInami, HRigopoulou, DSanders, DHuang, JWang, ZIn this paper we present our imaging observations on the CO (7−6) line and its underlying continuum emission of the young submillimeter galaxy LESS 073 at redshift 4.755, using the Atacama Large Millimeter/submillimeter Array (ALMA). At the achieved resolution of ∼1 ′′ .2 × 0 ′′ .9 (8 × 6 kpc2 ), the CO (7−6) emission is largely unresolved (with a deconvolved size of 1′′ .1(±0 ′′ .5) × 0 ′′ .9(±0 ′′ .8).), and the continuum emission is totally unresolved. The CO (7−6) line emission has an integrated flux of 0.86 ± 0.08 Jy km s−1 , and a line width of 343 ± 40 km s−1 . The continuum emission has a flux density of 0.51 mJy. By fitting the observed far-infrared (FIR) spectral energy distribution of LESS 073 with a single-temperature modified blackbody function, we obtained a dust temperature Tdust = 57.6 ± 3.5 K, 60-to-100 µm flux density ratio f60/f100 = 0.86 ± 0.08, and total infrared luminosity LIR = (5.8±0.9)×1012 L⊙. The SED-fit-based f60/f100 is consistent with those estimated from various line ratios as advocated by our earlier work, indicating that those proposed line-ratiobased method can be used to practically derive f60/f100 for high-z sources. The total molecular gas mass of LESS 073 is (3.3 ± 1.7) × 1010 M⊙, and the inferred gas depletion time is about 43 Myr. |
| spellingShingle | Zhao, Y Lu, N Diaz-Santos, T Gao, Y Xu, K Charmandaris, V Inami, H Rigopoulou, D Sanders, D Huang, J Wang, Z Alma maging of the co (7−6) line emission in the submillimeter galaxy less 073 at z = 4.755 |
| title | Alma maging of the co (7−6) line emission in the submillimeter galaxy less 073 at z = 4.755 |
| title_full | Alma maging of the co (7−6) line emission in the submillimeter galaxy less 073 at z = 4.755 |
| title_fullStr | Alma maging of the co (7−6) line emission in the submillimeter galaxy less 073 at z = 4.755 |
| title_full_unstemmed | Alma maging of the co (7−6) line emission in the submillimeter galaxy less 073 at z = 4.755 |
| title_short | Alma maging of the co (7−6) line emission in the submillimeter galaxy less 073 at z = 4.755 |
| title_sort | alma maging of the co 7 6 line emission in the submillimeter galaxy less 073 at z 4 755 |
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