A Young White Dwarf Orbiting PSR J1835−3259B in the Bulge Globular Cluster NGC 6652
We report on the discovery of the companion star to the millisecond pulsar PSR J1835−3259B in the Galactic globular cluster NGC 6652. Taking advantage of deep photometric archival observations acquired through the Hubble Space Telescope in near-UV and optical bands, we identified a bright and blue o...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/acc583 |
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| author | Jianxing Chen Mario Cadelano Cristina Pallanca Francesco R. Ferraro Barbara Lanzoni Alina G. Istrate Marta Burgay Paulo C. C. Freire Tasha Gautam Andrea Possenti Alessandro Ridolfi |
| author_facet | Jianxing Chen Mario Cadelano Cristina Pallanca Francesco R. Ferraro Barbara Lanzoni Alina G. Istrate Marta Burgay Paulo C. C. Freire Tasha Gautam Andrea Possenti Alessandro Ridolfi |
| author_sort | Jianxing Chen |
| collection | DOAJ |
| description | We report on the discovery of the companion star to the millisecond pulsar PSR J1835−3259B in the Galactic globular cluster NGC 6652. Taking advantage of deep photometric archival observations acquired through the Hubble Space Telescope in near-UV and optical bands, we identified a bright and blue object at a position compatible with that of the radio pulsar. The companion is located along the helium-core white dwarf cooling sequence, and the comparison with binary evolution models provides a mass of 0.17 ± 0.02 M _⊙ , a surface temperature of 11,500 ± 1900 K, and a very young cooling age of only 200 ± 100 Myr. The mass and the age of the companion are compatible with a progenitor star of about 0.87 M _⊙ , which started transferring mass to the primary during its evolution along the subgiant branch and stopped during the early red giant branch phase. Combining together the pulsar mass function and the companion mass, we found that this system is observed at an almost edge-on orbit and hosts a neutron star with a mass of 1.44 ± 0.06 M _⊙ , thus suggesting a highly nonconservative mass accretion phase. The young age of the WD companion is consistent with the scenario of a powerful, relatively young MSP indicated by the earlier detection of gamma-rays from this system. |
| first_indexed | 2024-03-12T03:34:41Z |
| format | Article |
| id | doaj.art-56f32c49008f4b7f83ea56f954e2ae82 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-12T03:34:41Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-56f32c49008f4b7f83ea56f954e2ae822023-09-03T13:19:12ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-0194828410.3847/1538-4357/acc583A Young White Dwarf Orbiting PSR J1835−3259B in the Bulge Globular Cluster NGC 6652Jianxing Chen0https://orcid.org/0000-0002-8004-549XMario Cadelano1https://orcid.org/0000-0002-5038-3914Cristina Pallanca2https://orcid.org/0000-0002-7104-2107Francesco R. Ferraro3https://orcid.org/0000-0002-2165-8528Barbara Lanzoni4https://orcid.org/0000-0001-5613-4938Alina G. Istrate5https://orcid.org/0000-0002-8811-8171Marta Burgay6https://orcid.org/0000-0002-8265-4344Paulo C. C. Freire7https://orcid.org/0000-0003-1307-9435Tasha Gautam8https://orcid.org/0000-0002-8396-2197Andrea Possenti9https://orcid.org/0000-0001-5902-3731Alessandro Ridolfi10https://orcid.org/0000-0001-6762-2638Dipartimento di Fisica e Astronomia “Augusto Righi,” Alma Mater Studiorum Università di Bologna , via Piero Gobetti 93/2, I-40129 Bologna, Italy ; jianxing.chen2@unibo.it; INAF-Osservatorio di Astrofisica e Scienze dello Spazio di Bologna , Via Piero Gobetti 93/3 I-40129 Bologna, ItalyDipartimento di Fisica e Astronomia “Augusto Righi,” Alma Mater Studiorum Università di Bologna , via Piero Gobetti 93/2, I-40129 Bologna, Italy ; jianxing.chen2@unibo.it; INAF-Osservatorio di Astrofisica e Scienze dello Spazio di Bologna , Via Piero Gobetti 93/3 I-40129 Bologna, ItalyDipartimento di Fisica e Astronomia “Augusto Righi,” Alma Mater Studiorum Università di Bologna , via Piero Gobetti 93/2, I-40129 Bologna, Italy ; jianxing.chen2@unibo.it; INAF-Osservatorio di Astrofisica e Scienze dello Spazio di Bologna , Via Piero Gobetti 93/3 I-40129 Bologna, ItalyDipartimento di Fisica e Astronomia “Augusto Righi,” Alma Mater Studiorum Università di Bologna , via Piero Gobetti 93/2, I-40129 Bologna, Italy ; jianxing.chen2@unibo.it; INAF-Osservatorio di Astrofisica e Scienze dello Spazio di Bologna , Via Piero Gobetti 93/3 I-40129 Bologna, ItalyDipartimento di Fisica e Astronomia “Augusto Righi,” Alma Mater Studiorum Università di Bologna , via Piero Gobetti 93/2, I-40129 Bologna, Italy ; jianxing.chen2@unibo.it; INAF-Osservatorio di Astrofisica e Scienze dello Spazio di Bologna , Via Piero Gobetti 93/3 I-40129 Bologna, ItalyDepartment of Astrophysics/IMAPP, Radboud University Nijmegen , P.O. Box 9010, NL-6500 GL Nijmegen, The NetherlandsINAF—Osservatorio Astronomico di Cagliari , via della Scienza 5, I-09047 Selargius (CA), ItalyMax-Planck-Institut für Radioastronomie MPIfR , Auf dem Hügel 69, D-53121 Bonn, GermanyNational Radio Astronomy Observatory , 520 Edgemont Rd., Charlottesville, VA 22903, USAINAF—Osservatorio Astronomico di Cagliari , via della Scienza 5, I-09047 Selargius (CA), ItalyINAF—Osservatorio Astronomico di Cagliari , via della Scienza 5, I-09047 Selargius (CA), Italy; Max-Planck-Institut für Radioastronomie MPIfR , Auf dem Hügel 69, D-53121 Bonn, GermanyWe report on the discovery of the companion star to the millisecond pulsar PSR J1835−3259B in the Galactic globular cluster NGC 6652. Taking advantage of deep photometric archival observations acquired through the Hubble Space Telescope in near-UV and optical bands, we identified a bright and blue object at a position compatible with that of the radio pulsar. The companion is located along the helium-core white dwarf cooling sequence, and the comparison with binary evolution models provides a mass of 0.17 ± 0.02 M _⊙ , a surface temperature of 11,500 ± 1900 K, and a very young cooling age of only 200 ± 100 Myr. The mass and the age of the companion are compatible with a progenitor star of about 0.87 M _⊙ , which started transferring mass to the primary during its evolution along the subgiant branch and stopped during the early red giant branch phase. Combining together the pulsar mass function and the companion mass, we found that this system is observed at an almost edge-on orbit and hosts a neutron star with a mass of 1.44 ± 0.06 M _⊙ , thus suggesting a highly nonconservative mass accretion phase. The young age of the WD companion is consistent with the scenario of a powerful, relatively young MSP indicated by the earlier detection of gamma-rays from this system.https://doi.org/10.3847/1538-4357/acc583Millisecond pulsarsBinary pulsarsGlobular star clustersHST photometryNeutron starsWhite dwarf stars |
| spellingShingle | Jianxing Chen Mario Cadelano Cristina Pallanca Francesco R. Ferraro Barbara Lanzoni Alina G. Istrate Marta Burgay Paulo C. C. Freire Tasha Gautam Andrea Possenti Alessandro Ridolfi A Young White Dwarf Orbiting PSR J1835−3259B in the Bulge Globular Cluster NGC 6652 The Astrophysical Journal Millisecond pulsars Binary pulsars Globular star clusters HST photometry Neutron stars White dwarf stars |
| title | A Young White Dwarf Orbiting PSR J1835−3259B in the Bulge Globular Cluster NGC 6652 |
| title_full | A Young White Dwarf Orbiting PSR J1835−3259B in the Bulge Globular Cluster NGC 6652 |
| title_fullStr | A Young White Dwarf Orbiting PSR J1835−3259B in the Bulge Globular Cluster NGC 6652 |
| title_full_unstemmed | A Young White Dwarf Orbiting PSR J1835−3259B in the Bulge Globular Cluster NGC 6652 |
| title_short | A Young White Dwarf Orbiting PSR J1835−3259B in the Bulge Globular Cluster NGC 6652 |
| title_sort | young white dwarf orbiting psr j1835 3259b in the bulge globular cluster ngc 6652 |
| topic | Millisecond pulsars Binary pulsars Globular star clusters HST photometry Neutron stars White dwarf stars |
| url | https://doi.org/10.3847/1538-4357/acc583 |
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