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

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

37 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

Access to Document

10.1093/mnrasl/slu089

Cite this

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] ~-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.",

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 - http://www.scopus.com/inward/record.url?scp=84905158291&partnerID=8YFLogxK

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

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this