Skip to main content
We gratefully acknowledge support from the Simons Foundation, member institutions, and all contributors. Donate
arXiv logo
Cornell University Logo

Astrophysics

arXiv:astro-ph/9505044 (astro-ph)
[Submitted on 9 May 1995]

Title:PSR J0045-7319: A DUAL-LINE BINARY RADIO PULSAR

Authors:J.F. Bell, M. S. Bessell, B. W. Stappers, M. Bailes, V. M. Kaspi
View PDF
Abstract: Binary radio pulsars are superb tools for mapping binary orbits, because of the precision of the pulse timing method (Taylor and Weisberg 1989). To date, all orbital parameters for binary pulsars have been derived from observations of the pulsar alone. We present the first observations of the radial velocity variations due to the binary motion of a companion to a radio pulsar. Our results demonstrate that the companion to the Small Magellanic Cloud pulsar PSR J0045-7319 is the B1V star identified by Kaspi et al. (1994). The mass ratio of the system is 6.3 +/- 1.2, which, for a neutron star mass of 1.4 Mo, implies a mass of 8.8 +/- 1.8 Mo for the companion, consistent with the mass expected for a B1V star. The inclination angle for the binary system is therefore 44 +/- 5 degrees, and the projected rotational velocity of the companion is 113 +/- 10 km/s. The heliocentric radial velocity of the binary system is consistent with that of other stars and gas in the same region of the Small Magellanic Cloud.
Comments: 4 pages, Z-compressed postscript, figure included, accepted for publication in ApJ L in July 1995
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/9505044
  (or arXiv:astro-ph/9505044v1 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/9505044
Journal reference: Astrophys.J. 447 (1995) L117
Related DOI: https://doi.org/10.1086/309565

Submission history

From: Jonathon Bell [view email]
[v1] Tue, 9 May 1995 23:58:13 UTC (38 KB)
Full-text links:

Access Paper:

  • View PDF
  • Other Formats
view license
Current browse context:
astro-ph
< prev   |   next >
new | recent | 1995-05

References & Citations

export BibTeX citation

Bookmark

BibSonomy logo Reddit logo

Bibliographic and Citation Tools

Bibliographic Explorer (What is the Explorer?)
Connected Papers (What is Connected Papers?)
Litmaps (What is Litmaps?)
scite Smart Citations (What are Smart Citations?)

Code, Data and Media Associated with this Article

alphaXiv (What is alphaXiv?)
CatalyzeX Code Finder for Papers (What is CatalyzeX?)
DagsHub (What is DagsHub?)
Gotit.pub (What is GotitPub?)
Hugging Face (What is Huggingface?)
Papers with Code (What is Papers with Code?)
ScienceCast (What is ScienceCast?)

Demos

Replicate (What is Replicate?)
Hugging Face Spaces (What is Spaces?)
TXYZ.AI (What is TXYZ.AI?)

Recommenders and Search Tools

Influence Flower (What are Influence Flowers?)
CORE Recommender (What is CORE?)
IArxiv Recommender (What is IArxiv?)

arXivLabs: experimental projects with community collaborators

arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website.

Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them.

Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs.

Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)