Revisit of Open Clusters Upk 39, Upk 41 and Phoc 39 : A New Binary Open Cluster Found

Xianhao Ye; Terry D. Oswalt; Jingkun Zhao; Yong Yang; Gang Zhao

doi:10.48550/arXiv.2207.14229

Revisit of Open Clusters Upk 39, Upk 41 and Phoc 39 : A New Binary Open Cluster Found

Xianhao Ye, Terry D. Oswalt, Jingkun Zhao, Yong Yang, Gang Zhao

Physical Sciences

Chinese Academy of Sciences

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

Abstract

We investigate the three open clusters near Aquila Rift cloud, named as UPK 39 (c1 hereafter), UPK 41 (c2 hereafter) in Sim et al. (2019) and PHOC 39 (c3 hereafter) in Hunt & Reffert (2021), respectively. Using photometric passpands, reddening, and extinction from Gaia DR3, we construct the color-absolute-magnitude diagram (CAMD). Using isochrone fits their ages are estimated as 6.3 ± 0.9, 8.1 ± 1.4 and 21.8 ± 2.2 Myr, respectively. Their proper motions and radial velocities, estimated using data from Gaia and LAMOST are very similar. From their orbits, relative distances among them at different times, kinematics, ages, and metallicities, we conclude that c1 and c2 are primordial binary open cluster, which are likely to have been formed at the same time, and c3 may capture c1, c2 in the future.

Original language	American English
Journal	arXiv
DOIs	https://doi.org/10.48550/arXiv.2207.14229
State	Published - Jul 29 2022

Keywords

Open star cluster (1160)
Stellar kinematics (1608)

Disciplines

Astrophysics and Astronomy
Stars, Interstellar Medium and the Galaxy

Access to Document

10.48550/arXiv.2207.14229License: CC BY

Revisit of Open Clusters Upk 39 Upk 41 and Phoc 39 : A New BinarFinal published version, 806 KBLicense: CC BY

Cite this

@article{035188568b5641a1a4af9c308683a0c0,

title = "Revisit of Open Clusters Upk 39, Upk 41 and Phoc 39 : A New Binary Open Cluster Found",

abstract = " We investigate the three open clusters near Aquila Rift cloud, named as UPK 39 (c1 hereafter), UPK 41 (c2 hereafter) in Sim et al. (2019) and PHOC 39 (c3 hereafter) in Hunt & Reffert (2021), respectively. Using photometric passpands, reddening, and extinction from Gaia DR3, we construct the color-absolute-magnitude diagram (CAMD). Using isochrone fits their ages are estimated as 6.3 ± 0.9, 8.1 ± 1.4 and 21.8 ± 2.2 Myr, respectively. Their proper motions and radial velocities, estimated using data from Gaia and LAMOST are very similar. From their orbits, relative distances among them at different times, kinematics, ages, and metallicities, we conclude that c1 and c2 are primordial binary open cluster, which are likely to have been formed at the same time, and c3 may capture c1, c2 in the future.",

keywords = "Open star cluster (1160), Stellar kinematics (1608)",

author = "Xianhao Ye and Oswalt, {Terry D.} and Jingkun Zhao and Yong Yang and Gang Zhao",

year = "2022",

month = jul,

day = "29",

doi = "10.48550/arXiv.2207.14229",

language = "American English",

journal = "arXiv",

issn = "2331-8422",

publisher = "Cornell University",

}

TY - JOUR

T1 - Revisit of Open Clusters Upk 39, Upk 41 and Phoc 39 : A New Binary Open Cluster Found

AU - Ye, Xianhao

AU - Oswalt, Terry D.

AU - Zhao, Jingkun

AU - Yang, Yong

AU - Zhao, Gang

PY - 2022/7/29

Y1 - 2022/7/29

N2 - We investigate the three open clusters near Aquila Rift cloud, named as UPK 39 (c1 hereafter), UPK 41 (c2 hereafter) in Sim et al. (2019) and PHOC 39 (c3 hereafter) in Hunt & Reffert (2021), respectively. Using photometric passpands, reddening, and extinction from Gaia DR3, we construct the color-absolute-magnitude diagram (CAMD). Using isochrone fits their ages are estimated as 6.3 ± 0.9, 8.1 ± 1.4 and 21.8 ± 2.2 Myr, respectively. Their proper motions and radial velocities, estimated using data from Gaia and LAMOST are very similar. From their orbits, relative distances among them at different times, kinematics, ages, and metallicities, we conclude that c1 and c2 are primordial binary open cluster, which are likely to have been formed at the same time, and c3 may capture c1, c2 in the future.

AB - We investigate the three open clusters near Aquila Rift cloud, named as UPK 39 (c1 hereafter), UPK 41 (c2 hereafter) in Sim et al. (2019) and PHOC 39 (c3 hereafter) in Hunt & Reffert (2021), respectively. Using photometric passpands, reddening, and extinction from Gaia DR3, we construct the color-absolute-magnitude diagram (CAMD). Using isochrone fits their ages are estimated as 6.3 ± 0.9, 8.1 ± 1.4 and 21.8 ± 2.2 Myr, respectively. Their proper motions and radial velocities, estimated using data from Gaia and LAMOST are very similar. From their orbits, relative distances among them at different times, kinematics, ages, and metallicities, we conclude that c1 and c2 are primordial binary open cluster, which are likely to have been formed at the same time, and c3 may capture c1, c2 in the future.

KW - Open star cluster (1160)

KW - Stellar kinematics (1608)

UR - https://commons.erau.edu/publication/1856

U2 - 10.48550/arXiv.2207.14229

DO - 10.48550/arXiv.2207.14229

M3 - Article

SN - 2331-8422

JO - arXiv

JF - arXiv

ER -

Revisit of Open Clusters Upk 39, Upk 41 and Phoc 39 : A New Binary Open Cluster Found

Abstract

Keywords

Disciplines

Access to Document

Other files and links

Cite this