A young solar twin in the Rosette cluster NGC 2244 line of sight

Jeremy M. Huber; John F. Kielkopf; Matthew Menge; Bradley D. Carter; Gary J. Ferland; Frank O. Clark

doi:10.1093/mnras/sty188

A young solar twin in the Rosette cluster NGC 2244 line of sight

Jeremy M. Huber, John F. Kielkopf, Matthew Menge, Bradley D. Carter, Gary J. Ferland, Frank O. Clark

Research output: Contribution to journal › Article › peer-review

Abstract

Based on prior precision photometry and cluster age analysis, the bright star GSC 00154-01819 is a possible young pre-main sequence member of the Rosette cluster, NGC 2244. As part of a comprehensive study of the large-scale structure of the Rosette and its excitation by the cluster stars, we noted this star as a potential backlight for a probe of the interstellar medium and extinction along the sight line towards a distinctive nebular feature projected on to the cluster centre. New high-resolution spectra of the star were taken with the University College London Echelle Spectrograph of the AAT. They reveal that rather than being a reddened spectral typeBorAstar within theMonOB2association, it is a nearby, largely unreddened, solar twin of spectral type G2V less than 180 Myr old. It is about 219 pc from the Sun with a barycentric radial velocity of +14.35 ± 1.99 km s^-1. The spectrum of the Rosette behind it and along this line of sight shows a barycentric radial velocity of +26.0 ± 2.4 kms^-1 in Hα, and a full width at half-maximum velocity dispersion of 61.94 ± 1.38 km s^-1.

Original language	English
Pages (from-to)	323-335
Number of pages	13
Journal	Monthly Notices of the Royal Astronomical Society
Volume	476
Issue number	1
DOIs	https://doi.org/10.1093/mnras/sty188
State	Published - May 1 2018

Bibliographical note

Publisher Copyright:
© 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society.

Keywords

H regions
Stars: distances
Stars: solar-type

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1093/mnras/sty188

Cite this

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title = "A young solar twin in the Rosette cluster NGC 2244 line of sight",

abstract = "Based on prior precision photometry and cluster age analysis, the bright star GSC 00154-01819 is a possible young pre-main sequence member of the Rosette cluster, NGC 2244. As part of a comprehensive study of the large-scale structure of the Rosette and its excitation by the cluster stars, we noted this star as a potential backlight for a probe of the interstellar medium and extinction along the sight line towards a distinctive nebular feature projected on to the cluster centre. New high-resolution spectra of the star were taken with the University College London Echelle Spectrograph of the AAT. They reveal that rather than being a reddened spectral typeBorAstar within theMonOB2association, it is a nearby, largely unreddened, solar twin of spectral type G2V less than 180 Myr old. It is about 219 pc from the Sun with a barycentric radial velocity of +14.35 ± 1.99 km s-1. The spectrum of the Rosette behind it and along this line of sight shows a barycentric radial velocity of +26.0 ± 2.4 kms-1 in Hα, and a full width at half-maximum velocity dispersion of 61.94 ± 1.38 km s-1.",

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author = "Huber, {Jeremy M.} and Kielkopf, {John F.} and Matthew Menge and Carter, {Bradley D.} and Ferland, {Gary J.} and Clark, {Frank O.}",

note = "Publisher Copyright: {\textcopyright} 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society.",

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doi = "10.1093/mnras/sty188",

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T1 - A young solar twin in the Rosette cluster NGC 2244 line of sight

AU - Huber, Jeremy M.

AU - Kielkopf, John F.

AU - Menge, Matthew

AU - Carter, Bradley D.

AU - Ferland, Gary J.

AU - Clark, Frank O.

PY - 2018/5/1

Y1 - 2018/5/1

N2 - Based on prior precision photometry and cluster age analysis, the bright star GSC 00154-01819 is a possible young pre-main sequence member of the Rosette cluster, NGC 2244. As part of a comprehensive study of the large-scale structure of the Rosette and its excitation by the cluster stars, we noted this star as a potential backlight for a probe of the interstellar medium and extinction along the sight line towards a distinctive nebular feature projected on to the cluster centre. New high-resolution spectra of the star were taken with the University College London Echelle Spectrograph of the AAT. They reveal that rather than being a reddened spectral typeBorAstar within theMonOB2association, it is a nearby, largely unreddened, solar twin of spectral type G2V less than 180 Myr old. It is about 219 pc from the Sun with a barycentric radial velocity of +14.35 ± 1.99 km s-1. The spectrum of the Rosette behind it and along this line of sight shows a barycentric radial velocity of +26.0 ± 2.4 kms-1 in Hα, and a full width at half-maximum velocity dispersion of 61.94 ± 1.38 km s-1.

AB - Based on prior precision photometry and cluster age analysis, the bright star GSC 00154-01819 is a possible young pre-main sequence member of the Rosette cluster, NGC 2244. As part of a comprehensive study of the large-scale structure of the Rosette and its excitation by the cluster stars, we noted this star as a potential backlight for a probe of the interstellar medium and extinction along the sight line towards a distinctive nebular feature projected on to the cluster centre. New high-resolution spectra of the star were taken with the University College London Echelle Spectrograph of the AAT. They reveal that rather than being a reddened spectral typeBorAstar within theMonOB2association, it is a nearby, largely unreddened, solar twin of spectral type G2V less than 180 Myr old. It is about 219 pc from the Sun with a barycentric radial velocity of +14.35 ± 1.99 km s-1. The spectrum of the Rosette behind it and along this line of sight shows a barycentric radial velocity of +26.0 ± 2.4 kms-1 in Hα, and a full width at half-maximum velocity dispersion of 61.94 ± 1.38 km s-1.

KW - H regions

KW - Stars: distances

KW - Stars: solar-type

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A young solar twin in the Rosette cluster NGC 2244 line of sight

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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