Probing ISM Structure in Trumpler 14 and Carina i Using the Stratospheric Terahertz Observatory 2

Young Min Seo, Paul F. Goldsmith, Christopher K. Walker, David J. Hollenbach, Mark G. Wolfire, Craig A. Kulesa, Volker Tolls, Pietro N. Bernasconi, Umit Kavak, Floris F.S. Van Der Tak, Russ Shipman, Jian Rong Gao, Alexander Tielens, Michael G. Burton, Harold Yorke, Erick Young, William L. Peters, Abram Young, Christopher Groppi, Kristina DavisJorge L. Pineda, William D. Langer, Jonathan H. Kawamura, Antony Stark, Gary Melnick, David Rebolledo, Graeme F. Wong, Shinji Horiuchi, Thomas B. Kuiper

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We present observations of the Trumpler 14/Carina I region carried out using the Stratospheric Terahertz Observatory 2. The Trumpler 14/Carina I region is in the western part of the Carina Nebula Complex (CNC), which is one of the most extreme star-forming regions in the Milky Way. We observed Trumpler 14/Carina I in the 158 μm transition of [C ii] with a spatial resolution of 48″ and a velocity resolution of 0.17 km s-1. The observations cover a 0.25 by 0.28 area with central position l = 297.34, b = -0.60. The kinematics show that bright [C ii] structures are spatially and spectrally correlated with the surfaces of CO clouds, tracing the photodissociation region (PDR) and ionization front of each molecular cloud. Along seven lines of sight (LOSs) that traverse Tr 14 into the dark ridge to the southwest, we find that the [C ii] luminosity from the H ii region is 3.7 times that from the PDR. In the same LOS, we find in the PDRs an average ratio of 1 : 4.1 : 5.6 for the mass in atomic gas : dark CO gas : molecular gas traced by CO. Comparing multiple gas tracers, including H i 21 cm, [C ii], CO, and radio recombination lines, we find that the H ii regions of the CNC are well described as H ii regions with one side freely expanding toward us, consistent with the Champagne model of ionized gas evolution. The dispersal of the GMC in this region is dominated by EUV photoevaporation; the dispersal timescale is 20-30 Myr.

Original languageEnglish (US)
Article number120
JournalAstrophysical Journal
Volume878
Issue number2
DOIs
StatePublished - Jun 20 2019

Fingerprint

nebulae
photodissociation
line of sight
observatories
observatory
gas evolution
monatomic gases
ionized gases
molecular gases
tracing
molecular clouds
gases
tracers
ridges
kinematics
spatial resolution
luminosity
stars
ionization
gas

Keywords

  • ISM: kinematics and dynamics-ISM: structure-photon-dominated region (PDR)-stars: formation-surveys-H II regions

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Seo, Y. M., Goldsmith, P. F., Walker, C. K., Hollenbach, D. J., Wolfire, M. G., Kulesa, C. A., ... Kuiper, T. B. (2019). Probing ISM Structure in Trumpler 14 and Carina i Using the Stratospheric Terahertz Observatory 2. Astrophysical Journal, 878(2), [120]. https://doi.org/10.3847/1538-4357/ab2043

Probing ISM Structure in Trumpler 14 and Carina i Using the Stratospheric Terahertz Observatory 2. / Seo, Young Min; Goldsmith, Paul F.; Walker, Christopher K.; Hollenbach, David J.; Wolfire, Mark G.; Kulesa, Craig A.; Tolls, Volker; Bernasconi, Pietro N.; Kavak, Umit; Van Der Tak, Floris F.S.; Shipman, Russ; Gao, Jian Rong; Tielens, Alexander; Burton, Michael G.; Yorke, Harold; Young, Erick; Peters, William L.; Young, Abram; Groppi, Christopher; Davis, Kristina; Pineda, Jorge L.; Langer, William D.; Kawamura, Jonathan H.; Stark, Antony; Melnick, Gary; Rebolledo, David; Wong, Graeme F.; Horiuchi, Shinji; Kuiper, Thomas B.

In: Astrophysical Journal, Vol. 878, No. 2, 120, 20.06.2019.

Research output: Contribution to journalArticle

Seo, YM, Goldsmith, PF, Walker, CK, Hollenbach, DJ, Wolfire, MG, Kulesa, CA, Tolls, V, Bernasconi, PN, Kavak, U, Van Der Tak, FFS, Shipman, R, Gao, JR, Tielens, A, Burton, MG, Yorke, H, Young, E, Peters, WL, Young, A, Groppi, C, Davis, K, Pineda, JL, Langer, WD, Kawamura, JH, Stark, A, Melnick, G, Rebolledo, D, Wong, GF, Horiuchi, S & Kuiper, TB 2019, 'Probing ISM Structure in Trumpler 14 and Carina i Using the Stratospheric Terahertz Observatory 2', Astrophysical Journal, vol. 878, no. 2, 120. https://doi.org/10.3847/1538-4357/ab2043
Seo YM, Goldsmith PF, Walker CK, Hollenbach DJ, Wolfire MG, Kulesa CA et al. Probing ISM Structure in Trumpler 14 and Carina i Using the Stratospheric Terahertz Observatory 2. Astrophysical Journal. 2019 Jun 20;878(2). 120. https://doi.org/10.3847/1538-4357/ab2043
Seo, Young Min ; Goldsmith, Paul F. ; Walker, Christopher K. ; Hollenbach, David J. ; Wolfire, Mark G. ; Kulesa, Craig A. ; Tolls, Volker ; Bernasconi, Pietro N. ; Kavak, Umit ; Van Der Tak, Floris F.S. ; Shipman, Russ ; Gao, Jian Rong ; Tielens, Alexander ; Burton, Michael G. ; Yorke, Harold ; Young, Erick ; Peters, William L. ; Young, Abram ; Groppi, Christopher ; Davis, Kristina ; Pineda, Jorge L. ; Langer, William D. ; Kawamura, Jonathan H. ; Stark, Antony ; Melnick, Gary ; Rebolledo, David ; Wong, Graeme F. ; Horiuchi, Shinji ; Kuiper, Thomas B. / Probing ISM Structure in Trumpler 14 and Carina i Using the Stratospheric Terahertz Observatory 2. In: Astrophysical Journal. 2019 ; Vol. 878, No. 2.
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AU - Goldsmith, Paul F.

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AU - Hollenbach, David J.

AU - Wolfire, Mark G.

AU - Kulesa, Craig A.

AU - Tolls, Volker

AU - Bernasconi, Pietro N.

AU - Kavak, Umit

AU - Van Der Tak, Floris F.S.

AU - Shipman, Russ

AU - Gao, Jian Rong

AU - Tielens, Alexander

AU - Burton, Michael G.

AU - Yorke, Harold

AU - Young, Erick

AU - Peters, William L.

AU - Young, Abram

AU - Groppi, Christopher

AU - Davis, Kristina

AU - Pineda, Jorge L.

AU - Langer, William D.

AU - Kawamura, Jonathan H.

AU - Stark, Antony

AU - Melnick, Gary

AU - Rebolledo, David

AU - Wong, Graeme F.

AU - Horiuchi, Shinji

AU - Kuiper, Thomas B.

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