The M 4 Core Project with HST - III. Search for variable stars in the primary field

V. Nascimbeni; L. R. Bedin; D. C. Heggie; M. van den Berg; M. Giersz; G. Piotto; K. Brogaard; A. Bellini; A. P. Milone; R. M. Rich; D. Pooley; J. Anderson; L. Ubeda; S. Ortolani; L. Malavolta; A. Cunial; A. Pietrinferni

doi:10.1093/mnras/stu930

The M 4 Core Project with HST - III. Search for variable stars in the primary field

V. Nascimbeni^*, L. R. Bedin, D. C. Heggie, M. van den Berg, M. Giersz, G. Piotto, K. Brogaard, A. Bellini, A. P. Milone, R. M. Rich, D. Pooley, J. Anderson, L. Ubeda, S. Ortolani, L. Malavolta, A. Cunial, A. Pietrinferni

^*Corresponding author for this work

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

19 Citations (Scopus)

Abstract

We present the results of a photometric search for variable stars in the core of the Galactic globular cluster Messier 4 (M 4). The input data are a large and unprecedented set of deep Hubble Space Telescope WFC3 images (large programme GO-12911; 120 orbits allocated), primarily aimed at probing binaries with massive companions by detecting their astrometric wobbles. Though these data were not optimized to carry out a time-resolved photometric survey, their exquisite precision, spatial resolution and dynamic range enabled us to firmly detect 38 variable stars, of which 20 were previously unpublished. They include 19 clustermember eclipsing binaries (confirming the large binary fraction ofM4), RR Lyrae and objects with known X-ray counterparts. We improved and revised the parameters of some among published variables.

Original language	English
Pages (from-to)	2381-2391
Number of pages	11
Journal	Monthly Notices of the Royal Astronomical Society
Volume	442
Issue number	3
DOIs	https://doi.org/10.1093/mnras/stu930
Publication status	Published - Aug 2014

Access to Document

10.1093/mnras/stu930

Cite this

Nascimbeni, V., Bedin, L. R., Heggie, D. C., van den Berg, M., Giersz, M., Piotto, G., Brogaard, K., Bellini, A., Milone, A. P., Rich, R. M., Pooley, D., Anderson, J., Ubeda, L., Ortolani, S., Malavolta, L., Cunial, A., & Pietrinferni, A. (2014). The M 4 Core Project with HST - III. Search for variable stars in the primary field. Monthly Notices of the Royal Astronomical Society, 442(3), 2381-2391. https://doi.org/10.1093/mnras/stu930

@article{cced53a6fc6c4c08b65975eb18f5d9fc,

title = "The M 4 Core Project with HST - III. Search for variable stars in the primary field",

abstract = "We present the results of a photometric search for variable stars in the core of the Galactic globular cluster Messier 4 (M 4). The input data are a large and unprecedented set of deep Hubble Space Telescope WFC3 images (large programme GO-12911; 120 orbits allocated), primarily aimed at probing binaries with massive companions by detecting their astrometric wobbles. Though these data were not optimized to carry out a time-resolved photometric survey, their exquisite precision, spatial resolution and dynamic range enabled us to firmly detect 38 variable stars, of which 20 were previously unpublished. They include 19 clustermember eclipsing binaries (confirming the large binary fraction ofM4), RR Lyrae and objects with known X-ray counterparts. We improved and revised the parameters of some among published variables.",

keywords = "General - stars, Individual, NGC 6121, Photometric - binaries, Techniques, Variables, general - globular clusters",

author = "V. Nascimbeni and Bedin, {L. R.} and Heggie, {D. C.} and {van den Berg}, M. and M. Giersz and G. Piotto and K. Brogaard and A. Bellini and Milone, {A. P.} and Rich, {R. M.} and D. Pooley and J. Anderson and L. Ubeda and S. Ortolani and L. Malavolta and A. Cunial and A. Pietrinferni",

year = "2014",

month = aug,

doi = "10.1093/mnras/stu930",

language = "English",

volume = "442",

pages = "2381--2391",

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

issn = "0035-8711",

publisher = "Oxford University Press ",

number = "3",

}

Nascimbeni, V, Bedin, LR, Heggie, DC, van den Berg, M, Giersz, M, Piotto, G, Brogaard, K, Bellini, A, Milone, AP, Rich, RM, Pooley, D, Anderson, J, Ubeda, L, Ortolani, S, Malavolta, L, Cunial, A & Pietrinferni, A 2014, 'The M 4 Core Project with HST - III. Search for variable stars in the primary field', Monthly Notices of the Royal Astronomical Society, vol. 442, no. 3, pp. 2381-2391. https://doi.org/10.1093/mnras/stu930

TY - JOUR

T1 - The M 4 Core Project with HST - III. Search for variable stars in the primary field

AU - Nascimbeni, V.

AU - Bedin, L. R.

AU - Heggie, D. C.

AU - van den Berg, M.

AU - Giersz, M.

AU - Piotto, G.

AU - Brogaard, K.

AU - Bellini, A.

AU - Milone, A. P.

AU - Rich, R. M.

AU - Pooley, D.

AU - Anderson, J.

AU - Ubeda, L.

AU - Ortolani, S.

AU - Malavolta, L.

AU - Cunial, A.

AU - Pietrinferni, A.

PY - 2014/8

Y1 - 2014/8

N2 - We present the results of a photometric search for variable stars in the core of the Galactic globular cluster Messier 4 (M 4). The input data are a large and unprecedented set of deep Hubble Space Telescope WFC3 images (large programme GO-12911; 120 orbits allocated), primarily aimed at probing binaries with massive companions by detecting their astrometric wobbles. Though these data were not optimized to carry out a time-resolved photometric survey, their exquisite precision, spatial resolution and dynamic range enabled us to firmly detect 38 variable stars, of which 20 were previously unpublished. They include 19 clustermember eclipsing binaries (confirming the large binary fraction ofM4), RR Lyrae and objects with known X-ray counterparts. We improved and revised the parameters of some among published variables.

AB - We present the results of a photometric search for variable stars in the core of the Galactic globular cluster Messier 4 (M 4). The input data are a large and unprecedented set of deep Hubble Space Telescope WFC3 images (large programme GO-12911; 120 orbits allocated), primarily aimed at probing binaries with massive companions by detecting their astrometric wobbles. Though these data were not optimized to carry out a time-resolved photometric survey, their exquisite precision, spatial resolution and dynamic range enabled us to firmly detect 38 variable stars, of which 20 were previously unpublished. They include 19 clustermember eclipsing binaries (confirming the large binary fraction ofM4), RR Lyrae and objects with known X-ray counterparts. We improved and revised the parameters of some among published variables.

KW - General - stars

KW - Individual

KW - NGC 6121

KW - Photometric - binaries

KW - Techniques

KW - Variables

KW - general - globular clusters

UR - http://www.scopus.com/inward/record.url?scp=84904578523&partnerID=8YFLogxK

U2 - 10.1093/mnras/stu930

DO - 10.1093/mnras/stu930

M3 - Article

SN - 0035-8711

VL - 442

SP - 2381

EP - 2391

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

The M 4 Core Project with HST - III. Search for variable stars in the primary field

Abstract

Access to Document

Other files and links

Fingerprint

Cite this