Stellar Multiplicity Meets Stellar Evolution and Metallicity: The APOGEE View
We use the multi-epoch radial velocities acquired by the Apache Point Observatory Galactic Evolution Experiment (APOGEE) survey to perform a large-scale statistical study of stellar multiplicity for field stars in the Milky Way, spanning the evolutionary phases between the main sequence (MS) and the...
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , |
---|---|
Other Authors: | |
Language: | en |
Published: |
IOP PUBLISHING LTD
2018
|
Subjects: | |
Online Access: | http://hdl.handle.net/10150/627094 http://arizona.openrepository.com/arizona/handle/10150/627094 |
id |
ndltd-arizona.edu-oai-arizona.openrepository.com-10150-627094 |
---|---|
record_format |
oai_dc |
spelling |
ndltd-arizona.edu-oai-arizona.openrepository.com-10150-6270942018-03-25T03:00:28Z Stellar Multiplicity Meets Stellar Evolution and Metallicity: The APOGEE View Badenes, Carles Mazzola, Christine Thompson, Todd A. Covey, Kevin Freeman, Peter E. Walker, Matthew G. Moe, Maxwell Troup, Nicholas Nidever, David Prieto, Carlos Allende Andrews, Brett Barbá, Rodolfo H. Beers, Timothy C. Bovy, Jo Carlberg, Joleen K. Lee, Nathan De Johnson, Jennifer Lewis, Hannah Majewski, Steven R. Pinsonneault, Marc Sobeck, Jennifer Stassun, Keivan G. Stringfellow, Guy S. Zasowski, Gail Univ Arizona, Steward Observ binaries (including multiple): close binaries: spectroscopic stars: evolution stars: fundamental parameters We use the multi-epoch radial velocities acquired by the Apache Point Observatory Galactic Evolution Experiment (APOGEE) survey to perform a large-scale statistical study of stellar multiplicity for field stars in the Milky Way, spanning the evolutionary phases between the main sequence (MS) and the red clump. We show that the distribution of maximum radial velocity shifts (Delta RVmax) for APOGEE targets is a strong function of log g, with MS stars showing Delta RVmax as high as similar to 300 km s(-1), and steadily dropping down to similar to 30 km s(-1) for log g similar to 0, as stars climb up the red giant branch (RGB). Red clump stars show a distribution of Delta RVmax values comparable to that of stars at the tip of the RGB, implying they have similar multiplicity characteristics. The observed attrition of high Delta RVmax systems in the RGB is consistent with a lognormal period distribution in the MS and a multiplicity fraction of 0.35, which is truncated at an increasing period as stars become physically larger and undergo mass transfer after Roche Lobe overflow during H-shell burning. The Delta RVmax distributions also show that the multiplicity characteristics of field stars are metallicity-dependent, with metal-poor ([Fe/H] less than or similar to -0.5) stars having a multiplicity fraction a factor of 2-3 higher than metal-rich ([Fe/H] less than or similar to 0.0) stars. This has profound implications for the formation rates of interacting binaries observed by astronomical transient surveys and gravitational wave detectors, as well as the habitability of circumbinary planets. 2018-02-21 Article Stellar Multiplicity Meets Stellar Evolution and Metallicity: The APOGEE View 2018, 854 (2):147 The Astrophysical Journal 1538-4357 10.3847/1538-4357/aaa765 http://hdl.handle.net/10150/627094 http://arizona.openrepository.com/arizona/handle/10150/627094 The Astrophysical Journal en http://stacks.iop.org/0004-637X/854/i=2/a=147?key=crossref.09202efb3282dc67cb816b1d34cb6079 © 2018. The American Astronomical Society. All rights reserved. IOP PUBLISHING LTD |
collection |
NDLTD |
language |
en |
sources |
NDLTD |
topic |
binaries (including multiple): close binaries: spectroscopic stars: evolution stars: fundamental parameters |
spellingShingle |
binaries (including multiple): close binaries: spectroscopic stars: evolution stars: fundamental parameters Badenes, Carles Mazzola, Christine Thompson, Todd A. Covey, Kevin Freeman, Peter E. Walker, Matthew G. Moe, Maxwell Troup, Nicholas Nidever, David Prieto, Carlos Allende Andrews, Brett Barbá, Rodolfo H. Beers, Timothy C. Bovy, Jo Carlberg, Joleen K. Lee, Nathan De Johnson, Jennifer Lewis, Hannah Majewski, Steven R. Pinsonneault, Marc Sobeck, Jennifer Stassun, Keivan G. Stringfellow, Guy S. Zasowski, Gail Stellar Multiplicity Meets Stellar Evolution and Metallicity: The APOGEE View |
description |
We use the multi-epoch radial velocities acquired by the Apache Point Observatory Galactic Evolution Experiment (APOGEE) survey to perform a large-scale statistical study of stellar multiplicity for field stars in the Milky Way, spanning the evolutionary phases between the main sequence (MS) and the red clump. We show that the distribution of maximum radial velocity shifts (Delta RVmax) for APOGEE targets is a strong function of log g, with MS stars showing Delta RVmax as high as similar to 300 km s(-1), and steadily dropping down to similar to 30 km s(-1) for log g similar to 0, as stars climb up the red giant branch (RGB). Red clump stars show a distribution of Delta RVmax values comparable to that of stars at the tip of the RGB, implying they have similar multiplicity characteristics. The observed attrition of high Delta RVmax systems in the RGB is consistent with a lognormal period distribution in the MS and a multiplicity fraction of 0.35, which is truncated at an increasing period as stars become physically larger and undergo mass transfer after Roche Lobe overflow during H-shell burning. The Delta RVmax distributions also show that the multiplicity characteristics of field stars are metallicity-dependent, with metal-poor ([Fe/H] less than or similar to -0.5) stars having a multiplicity fraction a factor of 2-3 higher than metal-rich ([Fe/H] less than or similar to 0.0) stars. This has profound implications for the formation rates of interacting binaries observed by astronomical transient surveys and gravitational wave detectors, as well as the habitability of circumbinary planets. |
author2 |
Univ Arizona, Steward Observ |
author_facet |
Univ Arizona, Steward Observ Badenes, Carles Mazzola, Christine Thompson, Todd A. Covey, Kevin Freeman, Peter E. Walker, Matthew G. Moe, Maxwell Troup, Nicholas Nidever, David Prieto, Carlos Allende Andrews, Brett Barbá, Rodolfo H. Beers, Timothy C. Bovy, Jo Carlberg, Joleen K. Lee, Nathan De Johnson, Jennifer Lewis, Hannah Majewski, Steven R. Pinsonneault, Marc Sobeck, Jennifer Stassun, Keivan G. Stringfellow, Guy S. Zasowski, Gail |
author |
Badenes, Carles Mazzola, Christine Thompson, Todd A. Covey, Kevin Freeman, Peter E. Walker, Matthew G. Moe, Maxwell Troup, Nicholas Nidever, David Prieto, Carlos Allende Andrews, Brett Barbá, Rodolfo H. Beers, Timothy C. Bovy, Jo Carlberg, Joleen K. Lee, Nathan De Johnson, Jennifer Lewis, Hannah Majewski, Steven R. Pinsonneault, Marc Sobeck, Jennifer Stassun, Keivan G. Stringfellow, Guy S. Zasowski, Gail |
author_sort |
Badenes, Carles |
title |
Stellar Multiplicity Meets Stellar Evolution and Metallicity: The APOGEE View |
title_short |
Stellar Multiplicity Meets Stellar Evolution and Metallicity: The APOGEE View |
title_full |
Stellar Multiplicity Meets Stellar Evolution and Metallicity: The APOGEE View |
title_fullStr |
Stellar Multiplicity Meets Stellar Evolution and Metallicity: The APOGEE View |
title_full_unstemmed |
Stellar Multiplicity Meets Stellar Evolution and Metallicity: The APOGEE View |
title_sort |
stellar multiplicity meets stellar evolution and metallicity: the apogee view |
publisher |
IOP PUBLISHING LTD |
publishDate |
2018 |
url |
http://hdl.handle.net/10150/627094 http://arizona.openrepository.com/arizona/handle/10150/627094 |
work_keys_str_mv |
AT badenescarles stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT mazzolachristine stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT thompsontodda stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT coveykevin stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT freemanpetere stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT walkermatthewg stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT moemaxwell stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT troupnicholas stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT nideverdavid stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT prietocarlosallende stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT andrewsbrett stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT barbarodolfoh stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT beerstimothyc stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT bovyjo stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT carlbergjoleenk stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT leenathande stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT johnsonjennifer stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT lewishannah stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT majewskistevenr stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT pinsonneaultmarc stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT sobeckjennifer stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT stassunkeivang stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT stringfellowguys stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview AT zasowskigail stellarmultiplicitymeetsstellarevolutionandmetallicitytheapogeeview |
_version_ |
1718617216474152960 |