A NEW DISTANT MILKY WAY GLOBULAR CLUSTER IN THE PAN-STARRS1 3 pi SURVEY

Benjamin P. M. Laevens; Nicolas F. Martin; Branimir Sesar; Edouard J. Bernard; Hans-Walter Rix; Colin T. Slater; Eric F. Bell; Annette M. N. Ferguson; Edward F. Schlafly; William S. Burgett; Kenneth C. Chambers; Larry Denneau; Peter W. Draper; Nicholas Kaiser; Rolf-Peter Kudritzki; Eugene A. Magnier; Nigel Metcalfe; Jeffrey S. Morgan; Paul A. Price; William E. Sweeney; John L. Tonry; Richard J. Wainscoat; Christopher Waters

doi:10.1088/2041-8205/786/1/L3

A NEW DISTANT MILKY WAY GLOBULAR CLUSTER IN THE PAN-STARRS1 3 pi SURVEY

Benjamin P. M. Laevens^*, Nicolas F. Martin, Branimir Sesar, Edouard J. Bernard, Hans-Walter Rix, Colin T. Slater, Eric F. Bell, Annette M. N. Ferguson, Edward F. Schlafly, William S. Burgett, Kenneth C. Chambers, Larry Denneau, Peter W. Draper, Nicholas Kaiser, Rolf-Peter Kudritzki, Eugene A. Magnier, Nigel Metcalfe, Jeffrey S. Morgan, Paul A. Price, William E. SweeneyJohn L. Tonry, Richard J. Wainscoat, Christopher Waters

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract

We present a new satellite in the outer halo of the Galaxy, the first Milky Way satellite found in the stacked photometric catalog of the Panoramic Survey Telescope and Rapid Response System 1 (Pan-STARRS1) Survey. From follow-up photometry obtained with WFI on the MPG/ESO 2.2 m telescope, we argue that the object, located at a heliocentric distance of 145 +/- 17 kpc, is the most distant Milky Way globular cluster yet known. With a total magnitude of M-V = -4.3 +/- 0.2 and a half-light radius of 20 +/- 2 pc, it shares the properties of extended globular clusters found in the outer halo of our Galaxy and the Andromeda galaxy. The discovery of this distant cluster shows that the full spatial extent of the Milky Way globular cluster system has not yet been fully explored.

Original language	English
Article number	3
Number of pages	6
Journal	Astrophysical Journal Letters
Volume	786
Issue number	1
DOIs	https://doi.org/10.1088/2041-8205/786/1/L3
Publication status	Published - 1 May 2014

Keywords / Materials (for Non-textual outputs)

globular clusters: individual (PSO J174.0675-10.8774)
Local Group
OUTER GALACTIC HALO
STAR-CLUSTERS
LOCAL GROUP
M31
SATELLITES
CALIBRATION
SYSTEM
SKY
POPULATION
DISCOVERY

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Laevens, B. P. M., Martin, N. F., Sesar, B., Bernard, E. J., Rix, H.-W., Slater, C. T., Bell, E. F., Ferguson, A. M. N., Schlafly, E. F., Burgett, W. S., Chambers, K. C., Denneau, L., Draper, P. W., Kaiser, N., Kudritzki, R.-P., Magnier, E. A., Metcalfe, N., Morgan, J. S., Price, P. A., ... Waters, C. (2014). A NEW DISTANT MILKY WAY GLOBULAR CLUSTER IN THE PAN-STARRS1 3 pi SURVEY. Astrophysical Journal Letters, 786(1), Article 3. https://doi.org/10.1088/2041-8205/786/1/L3

@article{17ebdc5be8dd4d43a01d18743c4e879b,

title = "A NEW DISTANT MILKY WAY GLOBULAR CLUSTER IN THE PAN-STARRS1 3 pi SURVEY",

abstract = "We present a new satellite in the outer halo of the Galaxy, the first Milky Way satellite found in the stacked photometric catalog of the Panoramic Survey Telescope and Rapid Response System 1 (Pan-STARRS1) Survey. From follow-up photometry obtained with WFI on the MPG/ESO 2.2 m telescope, we argue that the object, located at a heliocentric distance of 145 +/- 17 kpc, is the most distant Milky Way globular cluster yet known. With a total magnitude of M-V = -4.3 +/- 0.2 and a half-light radius of 20 +/- 2 pc, it shares the properties of extended globular clusters found in the outer halo of our Galaxy and the Andromeda galaxy. The discovery of this distant cluster shows that the full spatial extent of the Milky Way globular cluster system has not yet been fully explored.",

keywords = "globular clusters: individual (PSO J174.0675-10.8774), Local Group, OUTER GALACTIC HALO, STAR-CLUSTERS, LOCAL GROUP, M31, SATELLITES, CALIBRATION, SYSTEM, SKY, POPULATION, DISCOVERY",

author = "Laevens, {Benjamin P. M.} and Martin, {Nicolas F.} and Branimir Sesar and Bernard, {Edouard J.} and Hans-Walter Rix and Slater, {Colin T.} and Bell, {Eric F.} and Ferguson, {Annette M. N.} and Schlafly, {Edward F.} and Burgett, {William S.} and Chambers, {Kenneth C.} and Larry Denneau and Draper, {Peter W.} and Nicholas Kaiser and Rolf-Peter Kudritzki and Magnier, {Eugene A.} and Nigel Metcalfe and Morgan, {Jeffrey S.} and Price, {Paul A.} and Sweeney, {William E.} and Tonry, {John L.} and Wainscoat, {Richard J.} and Christopher Waters",

year = "2014",

month = may,

day = "1",

doi = "10.1088/2041-8205/786/1/L3",

language = "English",

volume = "786",

journal = "Astrophysical Journal Letters",

issn = "2041-8205",

publisher = "IOP Publishing",

number = "1",

}

Laevens, BPM, Martin, NF, Sesar, B, Bernard, EJ, Rix, H-W, Slater, CT, Bell, EF, Ferguson, AMN, Schlafly, EF, Burgett, WS, Chambers, KC, Denneau, L, Draper, PW, Kaiser, N, Kudritzki, R-P, Magnier, EA, Metcalfe, N, Morgan, JS, Price, PA, Sweeney, WE, Tonry, JL, Wainscoat, RJ & Waters, C 2014, 'A NEW DISTANT MILKY WAY GLOBULAR CLUSTER IN THE PAN-STARRS1 3 pi SURVEY', Astrophysical Journal Letters, vol. 786, no. 1, 3. https://doi.org/10.1088/2041-8205/786/1/L3

TY - JOUR

T1 - A NEW DISTANT MILKY WAY GLOBULAR CLUSTER IN THE PAN-STARRS1 3 pi SURVEY

AU - Laevens, Benjamin P. M.

AU - Martin, Nicolas F.

AU - Sesar, Branimir

AU - Bernard, Edouard J.

AU - Rix, Hans-Walter

AU - Slater, Colin T.

AU - Bell, Eric F.

AU - Ferguson, Annette M. N.

AU - Schlafly, Edward F.

AU - Burgett, William S.

AU - Chambers, Kenneth C.

AU - Denneau, Larry

AU - Draper, Peter W.

AU - Kaiser, Nicholas

AU - Kudritzki, Rolf-Peter

AU - Magnier, Eugene A.

AU - Metcalfe, Nigel

AU - Morgan, Jeffrey S.

AU - Price, Paul A.

AU - Sweeney, William E.

AU - Tonry, John L.

AU - Wainscoat, Richard J.

AU - Waters, Christopher

PY - 2014/5/1

Y1 - 2014/5/1

N2 - We present a new satellite in the outer halo of the Galaxy, the first Milky Way satellite found in the stacked photometric catalog of the Panoramic Survey Telescope and Rapid Response System 1 (Pan-STARRS1) Survey. From follow-up photometry obtained with WFI on the MPG/ESO 2.2 m telescope, we argue that the object, located at a heliocentric distance of 145 +/- 17 kpc, is the most distant Milky Way globular cluster yet known. With a total magnitude of M-V = -4.3 +/- 0.2 and a half-light radius of 20 +/- 2 pc, it shares the properties of extended globular clusters found in the outer halo of our Galaxy and the Andromeda galaxy. The discovery of this distant cluster shows that the full spatial extent of the Milky Way globular cluster system has not yet been fully explored.

AB - We present a new satellite in the outer halo of the Galaxy, the first Milky Way satellite found in the stacked photometric catalog of the Panoramic Survey Telescope and Rapid Response System 1 (Pan-STARRS1) Survey. From follow-up photometry obtained with WFI on the MPG/ESO 2.2 m telescope, we argue that the object, located at a heliocentric distance of 145 +/- 17 kpc, is the most distant Milky Way globular cluster yet known. With a total magnitude of M-V = -4.3 +/- 0.2 and a half-light radius of 20 +/- 2 pc, it shares the properties of extended globular clusters found in the outer halo of our Galaxy and the Andromeda galaxy. The discovery of this distant cluster shows that the full spatial extent of the Milky Way globular cluster system has not yet been fully explored.

KW - globular clusters: individual (PSO J174.0675-10.8774)

KW - Local Group

KW - OUTER GALACTIC HALO

KW - STAR-CLUSTERS

KW - LOCAL GROUP

KW - M31

KW - SATELLITES

KW - CALIBRATION

KW - SYSTEM

KW - SKY

KW - POPULATION

KW - DISCOVERY

U2 - 10.1088/2041-8205/786/1/L3

DO - 10.1088/2041-8205/786/1/L3

M3 - Article

SN - 2041-8205

VL - 786

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 1

M1 - 3

ER -

A NEW DISTANT MILKY WAY GLOBULAR CLUSTER IN THE PAN-STARRS1 3 pi SURVEY

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Keywords / Materials (for Non-textual outputs)

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