Discovery of a new low-latitude milky way globular cluster using glimpse

Henry A.K. Obulnicky; A. J. Monson; B. A. Buckalew; J. M. Darnel; B. Uzpen; M. R. Meade; B. L. Babler; R. Indebetouw; B. A. Whitney; C. Watson; E. Churchwell; M. G. Wolfire; M. J. Wolff; D. P. Clemens; R. Shah; T. M. Bania; R. A. Benjamin; M. Cohen; J. M. Dickey; J. M. Jackson; A. P. Marston; J. S. Mathis; E. P. Mercer; J. R. Stauffer; S. R. Stolovy; J. P. Norris; A. Kutyrev; R. Canterna; M. J. Pierce

doi:10.1086/426337

Discovery of a new low-latitude milky way globular cluster using glimpse

Henry A.K. Obulnicky, A. J. Monson, B. A. Buckalew, J. M. Darnel, B. Uzpen, M. R. Meade, B. L. Babler, R. Indebetouw, B. A. Whitney, C. Watson, E. Churchwell, M. G. Wolfire, M. J. Wolff, D. P. Clemens, R. Shah, T. M. Bania, R. A. Benjamin, M. Cohen, J. M. Dickey, J. M. JacksonA. P. Marston, J. S. Mathis, E. P. Mercer, J. R. Stauffer, S. R. Stolovy, J. P. Norris, A. Kutyrev, R. Canterna, M. J. Pierce

Astronomy & Astrophysics

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Abstract

Spitzer Space Telescope imaging from the Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSE) reveals a previously unidentified low-latitude rich star cluster near l = 31°.3, b = -0°.1. Near-infrared JHK′ photometry from the Wyoming Infrared Observatory indicates an extinction of A _v ≃ 15 ± 3 mag for cluster members. Analysis of ¹³CO features along the same sight line suggests a probable kinematic distance of 3.1-5.2 kpc. The new cluster has an angular diameter of ∼ 1-2 pc, a total magnitude corrected for extinction of m _K0 = 2.1, and a luminosity of M _K ≃ -10.3 at 3.1 kpc. In contrast to young massive Galactic clusters with ages less than 100 Myr, the new cluster has no significant radio emission. Comparison with theoretical K-band luminosity functions indicates an age of at least several gigayears and a mass of at least 10 ⁵ M⊙. Unlike known old open clusters, this new cluster lies in the inner Galaxy at R _GC ≃ 6.1 kpc. We designate this object "GLIMPSE-C01" and present evidence that it is a Milky Way globular cluster passing through the Galactic disk. We also identify a region of star formation and fan-shaped outflows from young stellar objects in the same field as the cluster. The cluster's passage through the Galactic molecular layer may have triggered this star formation activity.

Original language	English (US)
Pages (from-to)	239-250
Number of pages	12
Journal	Astronomical Journal
Volume	129
Issue number	1
DOIs	https://doi.org/10.1086/426337
State	Published - Jan 2005

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/426337

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Obulnicky, H. A. K., Monson, A. J., Buckalew, B. A., Darnel, J. M., Uzpen, B., Meade, M. R., Babler, B. L., Indebetouw, R., Whitney, B. A., Watson, C., Churchwell, E., Wolfire, M. G., Wolff, M. J., Clemens, D. P., Shah, R., Bania, T. M., Benjamin, R. A., Cohen, M., Dickey, J. M., ... Pierce, M. J. (2005). Discovery of a new low-latitude milky way globular cluster using glimpse. Astronomical Journal, 129(1), 239-250. https://doi.org/10.1086/426337

@article{894f05023b494b908a9f5807e37ff61d,

title = "Discovery of a new low-latitude milky way globular cluster using glimpse",

abstract = "Spitzer Space Telescope imaging from the Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSE) reveals a previously unidentified low-latitude rich star cluster near l = 31°.3, b = -0°.1. Near-infrared JHK′ photometry from the Wyoming Infrared Observatory indicates an extinction of A v ≃ 15 ± 3 mag for cluster members. Analysis of 13CO features along the same sight line suggests a probable kinematic distance of 3.1-5.2 kpc. The new cluster has an angular diameter of ∼ 1-2 pc, a total magnitude corrected for extinction of m K0 = 2.1, and a luminosity of M K ≃ -10.3 at 3.1 kpc. In contrast to young massive Galactic clusters with ages less than 100 Myr, the new cluster has no significant radio emission. Comparison with theoretical K-band luminosity functions indicates an age of at least several gigayears and a mass of at least 10 5 M⊙. Unlike known old open clusters, this new cluster lies in the inner Galaxy at R GC ≃ 6.1 kpc. We designate this object {"}GLIMPSE-C01{"} and present evidence that it is a Milky Way globular cluster passing through the Galactic disk. We also identify a region of star formation and fan-shaped outflows from young stellar objects in the same field as the cluster. The cluster's passage through the Galactic molecular layer may have triggered this star formation activity.",

author = "Obulnicky, {Henry A.K.} and Monson, {A. J.} and Buckalew, {B. A.} and Darnel, {J. M.} and B. Uzpen and Meade, {M. R.} and Babler, {B. L.} and R. Indebetouw and Whitney, {B. A.} and C. Watson and E. Churchwell and Wolfire, {M. G.} and Wolff, {M. J.} and Clemens, {D. P.} and R. Shah and Bania, {T. M.} and Benjamin, {R. A.} and M. Cohen and Dickey, {J. M.} and Jackson, {J. M.} and Marston, {A. P.} and Mathis, {J. S.} and Mercer, {E. P.} and Stauffer, {J. R.} and Stolovy, {S. R.} and Norris, {J. P.} and A. Kutyrev and R. Canterna and Pierce, {M. J.}",

note = "Funding Information: We thank Brad Margus and the AT Children{\textquoteright}s Project staff for their invaluable help. This study was supported by Grants PM97-0018 from DGESIC, 08.5/0051/98 from CAM and from Fundaci{\'o}n Endocrinologia y Nutrici{\'o}n.",

year = "2005",

month = jan,

doi = "10.1086/426337",

language = "English (US)",

volume = "129",

pages = "239--250",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "American Astronomical Society",

number = "1",

}

Obulnicky, HAK, Monson, AJ, Buckalew, BA, Darnel, JM, Uzpen, B, Meade, MR, Babler, BL, Indebetouw, R, Whitney, BA, Watson, C, Churchwell, E, Wolfire, MG, Wolff, MJ, Clemens, DP, Shah, R, Bania, TM, Benjamin, RA, Cohen, M, Dickey, JM, Jackson, JM, Marston, AP, Mathis, JS, Mercer, EP, Stauffer, JR, Stolovy, SR, Norris, JP, Kutyrev, A, Canterna, R & Pierce, MJ 2005, 'Discovery of a new low-latitude milky way globular cluster using glimpse', Astronomical Journal, vol. 129, no. 1, pp. 239-250. https://doi.org/10.1086/426337

TY - JOUR

T1 - Discovery of a new low-latitude milky way globular cluster using glimpse

AU - Obulnicky, Henry A.K.

AU - Monson, A. J.

AU - Buckalew, B. A.

AU - Darnel, J. M.

AU - Uzpen, B.

AU - Meade, M. R.

AU - Babler, B. L.

AU - Indebetouw, R.

AU - Whitney, B. A.

AU - Watson, C.

AU - Churchwell, E.

AU - Wolfire, M. G.

AU - Wolff, M. J.

AU - Clemens, D. P.

AU - Shah, R.

AU - Bania, T. M.

AU - Benjamin, R. A.

AU - Cohen, M.

AU - Dickey, J. M.

AU - Jackson, J. M.

AU - Marston, A. P.

AU - Mathis, J. S.

AU - Mercer, E. P.

AU - Stauffer, J. R.

AU - Stolovy, S. R.

AU - Norris, J. P.

AU - Kutyrev, A.

AU - Canterna, R.

AU - Pierce, M. J.

N1 - Funding Information: We thank Brad Margus and the AT Children’s Project staff for their invaluable help. This study was supported by Grants PM97-0018 from DGESIC, 08.5/0051/98 from CAM and from Fundación Endocrinologia y Nutrición.

PY - 2005/1

Y1 - 2005/1

N2 - Spitzer Space Telescope imaging from the Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSE) reveals a previously unidentified low-latitude rich star cluster near l = 31°.3, b = -0°.1. Near-infrared JHK′ photometry from the Wyoming Infrared Observatory indicates an extinction of A v ≃ 15 ± 3 mag for cluster members. Analysis of 13CO features along the same sight line suggests a probable kinematic distance of 3.1-5.2 kpc. The new cluster has an angular diameter of ∼ 1-2 pc, a total magnitude corrected for extinction of m K0 = 2.1, and a luminosity of M K ≃ -10.3 at 3.1 kpc. In contrast to young massive Galactic clusters with ages less than 100 Myr, the new cluster has no significant radio emission. Comparison with theoretical K-band luminosity functions indicates an age of at least several gigayears and a mass of at least 10 5 M⊙. Unlike known old open clusters, this new cluster lies in the inner Galaxy at R GC ≃ 6.1 kpc. We designate this object "GLIMPSE-C01" and present evidence that it is a Milky Way globular cluster passing through the Galactic disk. We also identify a region of star formation and fan-shaped outflows from young stellar objects in the same field as the cluster. The cluster's passage through the Galactic molecular layer may have triggered this star formation activity.

AB - Spitzer Space Telescope imaging from the Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSE) reveals a previously unidentified low-latitude rich star cluster near l = 31°.3, b = -0°.1. Near-infrared JHK′ photometry from the Wyoming Infrared Observatory indicates an extinction of A v ≃ 15 ± 3 mag for cluster members. Analysis of 13CO features along the same sight line suggests a probable kinematic distance of 3.1-5.2 kpc. The new cluster has an angular diameter of ∼ 1-2 pc, a total magnitude corrected for extinction of m K0 = 2.1, and a luminosity of M K ≃ -10.3 at 3.1 kpc. In contrast to young massive Galactic clusters with ages less than 100 Myr, the new cluster has no significant radio emission. Comparison with theoretical K-band luminosity functions indicates an age of at least several gigayears and a mass of at least 10 5 M⊙. Unlike known old open clusters, this new cluster lies in the inner Galaxy at R GC ≃ 6.1 kpc. We designate this object "GLIMPSE-C01" and present evidence that it is a Milky Way globular cluster passing through the Galactic disk. We also identify a region of star formation and fan-shaped outflows from young stellar objects in the same field as the cluster. The cluster's passage through the Galactic molecular layer may have triggered this star formation activity.

UR - http://www.scopus.com/inward/record.url?scp=20044368225&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=20044368225&partnerID=8YFLogxK

U2 - 10.1086/426337

DO - 10.1086/426337

M3 - Article

AN - SCOPUS:20044368225

SN - 0004-6256

VL - 129

SP - 239

EP - 250

JO - Astronomical Journal

JF - Astronomical Journal

IS - 1

ER -

Discovery of a new low-latitude milky way globular cluster using glimpse

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