English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Physical characterization of serendipitously uncovered millimeter-wave line-emitting galaxies at z ∼ 2.5 behind the local luminous infrared galaxy VV 114

Mizukoshi, S., Kohno, K., Egusa, F., Hatsukade, B., Minezaki, T., Saito, T., et al. (2021). Physical characterization of serendipitously uncovered millimeter-wave line-emitting galaxies at z ∼ 2.5 behind the local luminous infrared galaxy VV 114. The Astrophysical Journal, 917(2): 94. doi:10.3847/1538-4357/ac01cc.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files
hide Files
:
Physical characterization of serendipitously uncovered millimeter-wave line-emitting galaxies at z ∼ 2.5 behind the local luminous infrared galaxy VV 114.pdf (Any fulltext), 3MB
 
File Permalink:
-
Name:
Physical characterization of serendipitously uncovered millimeter-wave line-emitting galaxies at z ∼ 2.5 behind the local luminous infrared galaxy VV 114.pdf
Description:
-
Visibility:
Private
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Mizukoshi, Shoichiro, Author
Kohno, Kotaro, Author
Egusa, Fumi, Author
Hatsukade, Bunyo, Author
Minezaki, Takeo, Author
Saito, Toshiki, Author
Tamura, Yoichi, Author
Iono, Daisuke, Author
Ueda, Junko, Author
Matsuda, Yuichi, Author
Kawabe, Ryohei, Author
Lee, Minju M.1, Author              
Yun, Min S., Author
Espada, Daniel, Author
Affiliations:
1Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159889              

Content

show
hide
Free keywords: -
 Abstract: We present a detailed investigation of millimeter-wave line emitters ALMA J010748.3-173028 (ALMA-J0107a) and ALMA J010747.0-173010 (ALMA-J0107b), which were serendipitously uncovered in the background of the nearby galaxy VV114 with spectral scan observations at λ = 2 - 3 mm. Via Atacama Large Millimeter/submillimeter Array (ALMA) detection of CO(4-3), CO(3-2), and [CI](1-0) lines for both sources, their spectroscopic redshifts are unambiguously determined to be z=2.4666±0.0002 and z=2.3100±0.0002, respectively. We obtain the apparent molecular gas masses Mgas of these two line emitters from [CI] line fluxes as (11.2±3.1)×1010M and (4.2±1.2)×1010M, respectively. The observed CO(4-3) velocity field of ALMA-J0107a exhibits a clear velocity gradient across the CO disk, and we find that ALMA-J0107a is characterized by an inclined rotating disk with a significant turbulence, that is, a deprojected maximum rotation velocity to velocity dispersion ratio vmaxv of 1.3±0.3. We find that the dynamical mass of ALMA-J0107a within the CO-emitting disk computed from the derived kinetic parameters, (1.1±0.2)×1010 M, is an order of magnitude smaller than the molecular gas mass derived from dust continuum emission, (3.2±1.6)×1011 M. We suggest this source is magnified by a gravitational lens with a magnification of μ≳10, which is consistent with the measured offset from the empirical correlation between CO-line luminosity and width.

Details

show
hide
Language(s):
 Dates: 2021-08-23
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.3847/1538-4357/ac01cc
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: The Astrophysical Journal
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Bristol; Vienna : IOP Publishing; IAEA
Pages: - Volume / Issue: 917 (2) Sequence Number: 94 Start / End Page: - Identifier: ISSN: 0004-637X
CoNE: https://pure.mpg.de/cone/journals/resource/954922828215_3