Assessing the stellar population and the environment of an HII region on the far side of the galaxy

André Nicolas Chené; Robert A. Benjamin; Sebastian Ramírez-Alegría; Jura Borissova; Radostin Kurtev; Christian Moni Bidin; Francesco Mauro; Phil Lucas; Zhen Guo; Leigh C. Smith; Carlos Gonzalez-Fernandez; Valentin D. Ivanov; Dante Minniti; Loren D. Anderson; William P. Armentrout; Danilo Gonzalez; Artemio Herrero; Karla Peña Ramírez

doi:10.3847/1538-4357/abec6f

Assessing the stellar population and the environment of an HII region on the far side of the galaxy

André Nicolas Chené, Robert A. Benjamin, Sebastian Ramírez-Alegría, Jura Borissova, Radostin Kurtev, Christian Moni Bidin, Francesco Mauro, Phil Lucas, Zhen Guo, Leigh C. Smith, Carlos Gonzalez-Fernandez, Valentin D. Ivanov, Dante Minniti, Loren D. Anderson, William P. Armentrout, Danilo Gonzalez, Artemio Herrero, Karla Peña Ramírez

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Abstract

We have investigated the stellar and interstellar content of the distant star formation region IRAS 17591-2228 (WISE H II region GAL 007.47+0.06). It is associated with a water maser, whose parallax distance is d = 20.4_-⁺_2.2^2.8 kpc, supported by independent measurements of proper motion and radial velocity. It is projected in the same direction as an extremely red (J−K_S ∼ 6 mag) group of stars, and a shell of mid-infrared emission. We qualify the group of stars as a cluster candidate, VVV CL177. Its radius spans between 0 45 and 1′ and contains at least two young stellar objects with an extreme extinction near A_V ~ 40 mag. Yet more analysis will be required to determine if it is a real single cluster associated with the water maser. The ¹³CO emissions at the radial velocity of the maser corresponds to the mid-infrared emission.

Original language	English
Article number	91
Journal	Astrophysical Journal
Volume	911
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/abec6f
Publication status	Published - 20 Apr 2021

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.3847/1538-4357/abec6f

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Chené, A. N., Benjamin, R. A., Ramírez-Alegría, S., Borissova, J., Kurtev, R., Bidin, C. M., Mauro, F., Lucas, P., Guo, Z., Smith, L. C., Gonzalez-Fernandez, C., Ivanov, V. D., Minniti, D., Anderson, L. D., Armentrout, W. P., Gonzalez, D., Herrero, A., & Ramírez, K. P. (2021). Assessing the stellar population and the environment of an HII region on the far side of the galaxy. Astrophysical Journal, 911(2), Article 91. https://doi.org/10.3847/1538-4357/abec6f

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title = "Assessing the stellar population and the environment of an HII region on the far side of the galaxy",

abstract = "We have investigated the stellar and interstellar content of the distant star formation region IRAS 17591-2228 (WISE H II region GAL 007.47+0.06). It is associated with a water maser, whose parallax distance is d = 20.4-+2.22.8 kpc, supported by independent measurements of proper motion and radial velocity. It is projected in the same direction as an extremely red (J−KS ∼ 6 mag) group of stars, and a shell of mid-infrared emission. We qualify the group of stars as a cluster candidate, VVV CL177. Its radius spans between 0 45 and 1′ and contains at least two young stellar objects with an extreme extinction near AV ~ 40 mag. Yet more analysis will be required to determine if it is a real single cluster associated with the water maser. The 13CO emissions at the radial velocity of the maser corresponds to the mid-infrared emission.",

author = "Chen{\'e}, {Andr{\'e} Nicolas} and Benjamin, {Robert A.} and Sebastian Ram{\'i}rez-Alegr{\'i}a and Jura Borissova and Radostin Kurtev and Bidin, {Christian Moni} and Francesco Mauro and Phil Lucas and Zhen Guo and Smith, {Leigh C.} and Carlos Gonzalez-Fernandez and Ivanov, {Valentin D.} and Dante Minniti and Anderson, {Loren D.} and Armentrout, {William P.} and Danilo Gonzalez and Artemio Herrero and Ram{\'i}rez, {Karla Pe{\~n}a}",

year = "2021",

month = apr,

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doi = "10.3847/1538-4357/abec6f",

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Chené, AN, Benjamin, RA, Ramírez-Alegría, S, Borissova, J, Kurtev, R, Bidin, CM, Mauro, F, Lucas, P, Guo, Z, Smith, LC, Gonzalez-Fernandez, C, Ivanov, VD, Minniti, D, Anderson, LD, Armentrout, WP, Gonzalez, D, Herrero, A & Ramírez, KP 2021, 'Assessing the stellar population and the environment of an HII region on the far side of the galaxy', Astrophysical Journal, vol. 911, no. 2, 91. https://doi.org/10.3847/1538-4357/abec6f

TY - JOUR

T1 - Assessing the stellar population and the environment of an HII region on the far side of the galaxy

AU - Chené, André Nicolas

AU - Benjamin, Robert A.

AU - Ramírez-Alegría, Sebastian

AU - Borissova, Jura

AU - Kurtev, Radostin

AU - Bidin, Christian Moni

AU - Mauro, Francesco

AU - Lucas, Phil

AU - Guo, Zhen

AU - Smith, Leigh C.

AU - Gonzalez-Fernandez, Carlos

AU - Ivanov, Valentin D.

AU - Minniti, Dante

AU - Anderson, Loren D.

AU - Armentrout, William P.

AU - Gonzalez, Danilo

AU - Herrero, Artemio

AU - Ramírez, Karla Peña

PY - 2021/4/20

Y1 - 2021/4/20

N2 - We have investigated the stellar and interstellar content of the distant star formation region IRAS 17591-2228 (WISE H II region GAL 007.47+0.06). It is associated with a water maser, whose parallax distance is d = 20.4-+2.22.8 kpc, supported by independent measurements of proper motion and radial velocity. It is projected in the same direction as an extremely red (J−KS ∼ 6 mag) group of stars, and a shell of mid-infrared emission. We qualify the group of stars as a cluster candidate, VVV CL177. Its radius spans between 0 45 and 1′ and contains at least two young stellar objects with an extreme extinction near AV ~ 40 mag. Yet more analysis will be required to determine if it is a real single cluster associated with the water maser. The 13CO emissions at the radial velocity of the maser corresponds to the mid-infrared emission.

AB - We have investigated the stellar and interstellar content of the distant star formation region IRAS 17591-2228 (WISE H II region GAL 007.47+0.06). It is associated with a water maser, whose parallax distance is d = 20.4-+2.22.8 kpc, supported by independent measurements of proper motion and radial velocity. It is projected in the same direction as an extremely red (J−KS ∼ 6 mag) group of stars, and a shell of mid-infrared emission. We qualify the group of stars as a cluster candidate, VVV CL177. Its radius spans between 0 45 and 1′ and contains at least two young stellar objects with an extreme extinction near AV ~ 40 mag. Yet more analysis will be required to determine if it is a real single cluster associated with the water maser. The 13CO emissions at the radial velocity of the maser corresponds to the mid-infrared emission.

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SN - 0004-637X

VL - 911

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 91

ER -

Assessing the stellar population and the environment of an HII region on the far side of the galaxy

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