Serendipitous discovery of a thin stellar stream near the Galactic bulge in the Pan-STARRS1 3π survey

Edouard J. Bernard; Annette M N Ferguson; Edward F. Schlafly; Mohamad Abbas; Eric F. Bell; Niall R. Deacon; Nicolas F. Martin; Hans Walter Rix; Branimir Sesar; Colin T. Slater; Jorge Peñarrubia; Rosemary F G Wyse; William S. Burgett; Kenneth C. Chambers; Peter W. Draper; Klaus W. Hodapp; Nicholas Kaiser; Rolf Peter Kudritzki; Eugene A. Magnier; Nigel Metcalfe; Jeffrey S. Morgan; Paul A. Price; John L. Tonry; Richard J. Wainscoat; Christopher Waters

doi:10.1093/mnrasl/slu089

Serendipitous discovery of a thin stellar stream near the Galactic bulge in the Pan-STARRS1 3π survey

Edouard J. Bernard
, Annette M N Ferguson
, Edward F. Schlafly
, Mohamad Abbas
, Eric F. Bell
, Niall R. Deacon
, Nicolas F. Martin
, Hans Walter Rix
, Branimir Sesar
, Colin T. Slater
, Jorge Peñarrubia
, Rosemary F G Wyse
, William S. Burgett
, Kenneth C. Chambers
, Peter W. Draper
, Klaus W. Hodapp
, Nicholas Kaiser
, Rolf Peter Kudritzki
, Eugene A. Magnier
, Nigel Metcalfe

Jeffrey S. Morgan, Paul A. Price, John L. Tonry, Richard J. Wainscoat, Christopher Waters

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

54 Citations (Scopus)

Abstract

We report the discovery of a thin stellar stream found in Pan-STARRS1 photometry near the Galactic bulge in the constellation of Ophiuchus. It appears as a coherent structure in the colour-selected stellar density maps produced to search for tidal debris around nearby globular clusters. The stream is exceptionally short and narrow; it is about 2.°5 long and 6 arcmin wide in projection. The colour-magnitude diagram of this object, which harbours a blue horizontalbranch, is consistent with an old and relatively metal-poor population ([Fe/H] ~-1.3) located 9.5 ± 0.9 kpc away at (l, b) ~ (5°, +32°), and 5.0 ± 1.0 kpc from the Galactic centre. These properties argue for a globular cluster as progenitor. The finding of such a prominent, nearby stream suggests that many streams could await discovery in themore densely populated regions of our Galaxy.

Original language	English
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	443
Issue number	1
DOIs	https://doi.org/10.1093/mnrasl/slu089
Publication status	Published - 8 Jul 2014

Keywords

Galaxy: halo
Galaxy: structure
Globular clusters: general
Surveys

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10.1093/mnrasl/slu089

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Bernard, E. J., Ferguson, A. M. N., Schlafly, E. F., Abbas, M., Bell, E. F., Deacon, N. R., Martin, N. F., Rix, H. W., Sesar, B., Slater, C. T., Peñarrubia, J., Wyse, R. F. G., Burgett, W. S., Chambers, K. C., Draper, P. W., Hodapp, K. W., Kaiser, N., Kudritzki, R. P., Magnier, E. A., ... Waters, C. (2014). Serendipitous discovery of a thin stellar stream near the Galactic bulge in the Pan-STARRS1 3π survey. Monthly Notices of the Royal Astronomical Society: Letters, 443(1). https://doi.org/10.1093/mnrasl/slu089

@article{a6f4dcd6a0214045bf144eb65889c52f,

title = "Serendipitous discovery of a thin stellar stream near the Galactic bulge in the Pan-STARRS1 3π survey",

abstract = "We report the discovery of a thin stellar stream found in Pan-STARRS1 photometry near the Galactic bulge in the constellation of Ophiuchus. It appears as a coherent structure in the colour-selected stellar density maps produced to search for tidal debris around nearby globular clusters. The stream is exceptionally short and narrow; it is about 2.°5 long and 6 arcmin wide in projection. The colour-magnitude diagram of this object, which harbours a blue horizontalbranch, is consistent with an old and relatively metal-poor population ([Fe/H] \textasciitilde{}-1.3) located 9.5 ± 0.9 kpc away at (l, b) \textasciitilde{} (5°, +32°), and 5.0 ± 1.0 kpc from the Galactic centre. These properties argue for a globular cluster as progenitor. The finding of such a prominent, nearby stream suggests that many streams could await discovery in themore densely populated regions of our Galaxy.",

keywords = "Galaxy: halo, Galaxy: structure, Globular clusters: general, Surveys",

author = "Bernard, \{Edouard J.\} and Ferguson, \{Annette M N\} and Schlafly, \{Edward F.\} and Mohamad Abbas and Bell, \{Eric F.\} and Deacon, \{Niall R.\} and Martin, \{Nicolas F.\} and Rix, \{Hans Walter\} and Branimir Sesar and Slater, \{Colin T.\} and Jorge Pe{\~n}arrubia and Wyse, \{Rosemary F G\} and Burgett, \{William S.\} and Chambers, \{Kenneth C.\} and Draper, \{Peter W.\} and Hodapp, \{Klaus W.\} and Nicholas Kaiser and Kudritzki, \{Rolf Peter\} and Magnier, \{Eugene A.\} and Nigel Metcalfe and Morgan, \{Jeffrey S.\} and Price, \{Paul A.\} and Tonry, \{John L.\} and Wainscoat, \{Richard J.\} and Christopher Waters",

year = "2014",

month = jul,

day = "8",

doi = "10.1093/mnrasl/slu089",

language = "English",

volume = "443",

journal = "Monthly Notices of the Royal Astronomical Society: Letters",

issn = "1745-3925",

publisher = "Oxford University Press (OUP)",

number = "1",

}

Bernard, EJ, Ferguson, AMN, Schlafly, EF, Abbas, M, Bell, EF, Deacon, NR, Martin, NF, Rix, HW, Sesar, B, Slater, CT, Peñarrubia, J, Wyse, RFG, Burgett, WS, Chambers, KC, Draper, PW, Hodapp, KW, Kaiser, N, Kudritzki, RP, Magnier, EA, Metcalfe, N, Morgan, JS, Price, PA, Tonry, JL, Wainscoat, RJ & Waters, C 2014, 'Serendipitous discovery of a thin stellar stream near the Galactic bulge in the Pan-STARRS1 3π survey', Monthly Notices of the Royal Astronomical Society: Letters, vol. 443, no. 1. https://doi.org/10.1093/mnrasl/slu089

TY - JOUR

T1 - Serendipitous discovery of a thin stellar stream near the Galactic bulge in the Pan-STARRS1 3π survey

AU - Bernard, Edouard J.

AU - Ferguson, Annette M N

AU - Schlafly, Edward F.

AU - Abbas, Mohamad

AU - Bell, Eric F.

AU - Deacon, Niall R.

AU - Martin, Nicolas F.

AU - Rix, Hans Walter

AU - Sesar, Branimir

AU - Slater, Colin T.

AU - Peñarrubia, Jorge

AU - Wyse, Rosemary F G

AU - Burgett, William S.

AU - Chambers, Kenneth C.

AU - Draper, Peter W.

AU - Hodapp, Klaus W.

AU - Kaiser, Nicholas

AU - Kudritzki, Rolf Peter

AU - Magnier, Eugene A.

AU - Metcalfe, Nigel

AU - Morgan, Jeffrey S.

AU - Price, Paul A.

AU - Tonry, John L.

AU - Wainscoat, Richard J.

AU - Waters, Christopher

PY - 2014/7/8

Y1 - 2014/7/8

N2 - We report the discovery of a thin stellar stream found in Pan-STARRS1 photometry near the Galactic bulge in the constellation of Ophiuchus. It appears as a coherent structure in the colour-selected stellar density maps produced to search for tidal debris around nearby globular clusters. The stream is exceptionally short and narrow; it is about 2.°5 long and 6 arcmin wide in projection. The colour-magnitude diagram of this object, which harbours a blue horizontalbranch, is consistent with an old and relatively metal-poor population ([Fe/H] ~-1.3) located 9.5 ± 0.9 kpc away at (l, b) ~ (5°, +32°), and 5.0 ± 1.0 kpc from the Galactic centre. These properties argue for a globular cluster as progenitor. The finding of such a prominent, nearby stream suggests that many streams could await discovery in themore densely populated regions of our Galaxy.

AB - We report the discovery of a thin stellar stream found in Pan-STARRS1 photometry near the Galactic bulge in the constellation of Ophiuchus. It appears as a coherent structure in the colour-selected stellar density maps produced to search for tidal debris around nearby globular clusters. The stream is exceptionally short and narrow; it is about 2.°5 long and 6 arcmin wide in projection. The colour-magnitude diagram of this object, which harbours a blue horizontalbranch, is consistent with an old and relatively metal-poor population ([Fe/H] ~-1.3) located 9.5 ± 0.9 kpc away at (l, b) ~ (5°, +32°), and 5.0 ± 1.0 kpc from the Galactic centre. These properties argue for a globular cluster as progenitor. The finding of such a prominent, nearby stream suggests that many streams could await discovery in themore densely populated regions of our Galaxy.

KW - Galaxy: halo

KW - Galaxy: structure

KW - Globular clusters: general

KW - Surveys

UR - https://www.scopus.com/pages/publications/84905158291

U2 - 10.1093/mnrasl/slu089

DO - 10.1093/mnrasl/slu089

M3 - Article

AN - SCOPUS:84905158291

SN - 1745-3925

VL - 443

JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

IS - 1

ER -

Serendipitous discovery of a thin stellar stream near the Galactic bulge in the Pan-STARRS1 3π survey

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Keywords

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