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Analysis and Modeling of a Large Sample of Galactic Be Stars

Grant number: 17/23731-1
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): November 01, 2018
Effective date (End): December 31, 2021
Field of knowledge:Physical Sciences and Mathematics - Astronomy - Stellar Astrophysics
Principal researcher:Alex Cavaliéri Carciofi
Grantee:Jonathan Michael Labadie-Bartz
Home Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:18/04055-8 - High precision spectroscopy: from the first stars to planets, AP.TEM

Abstract

The primary goal of this project is to bring Jonathan Labadie-Bartz to work with Prof. Alex C. Carciofi and his research group to study the population of Be stars. The proposed projects will not only serve to better understand rapidly rotating massive stars and disk physics, but will contribute to our understanding of stellar evolution and how the life and fate of massive stars is influenced by their rotation and composition.The primary research project involves combining a wealth of observational data with the stellar and disk models that are being developed in Prof. Carciofi's research group. A recently developed pipeline will be used to model time-series photometry (light curves) for over a thousand Galactic Be stars, providing us with a better understanding of the distribution of stellar and disk properties inherent in this population. The applicant has extensive experience working with this type of data, and the relevant light curve data are already on-hand. Our results will have a significant impact in regards to Be star science, as this will be the largest and most comprehensive work to date that categorizes both the star and the disk for Galactic metallicities. Beyond the category of Be stars, these results will provide important constraints on theories regarding the structure and evolution of rapidly rotating stars, specifically studying how mass and angular momentum is lost over their main sequence life time. Additionally, this work will shed light on astrophysical disks.Parallel projects by Prof. Carciofi's research group are currently underway for Be stars in the Large and Small Magellanic Clouds. With results from the LMC, SMC, and the Milky Way, we will begin to understand the role of metallicity in not only the Be phenomenon, but also the effect that composition has on stellar evolution and the rates of mass and angular momentum loss.The second part of this project will involve light curve analysis of Be stars without invoking models, using techniques developed by the applicant. New Be star candidates will be identified, with the potential to increase the number of known such systems by a substantial amount. Light curves will be leveraged to refine our understanding of the way in which Be stars lose mass, to explore the role and incidence rates of binarity, and to study pulsation, which likely has a significant roll in the mechanism by which Be stars eject mass.With the proliferation of both present and future astronomical surveys, time-domain astronomy is becoming increasingly important in stellar astrophysics (as well as in other fields). The applicant has extensive experience in analyzing time- series data. These methods will be shared with Prof. Carciofi's research group. In particular, the applicant will train members of the group to apply the already-developed techniques not just to KELT data, but also to other surveys.

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Scientific publications (13)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SHULTZ, M. E.; KOCHUKHOV, O.; LABADIE-BARTZ, J.; DAVID-URAZ, A.; OWOCKI, S. P. Detection of an extremely strong magnetic field in the double-degenerate binary merger product HD 144941. Monthly Notices of the Royal Astronomical Society, v. 507, n. 1, p. 1283-1295, OCT 2021. Web of Science Citations: 0.
KOCHUKHOV, O.; LABADIE-BARTZ, J.; KHALACK, V; SHULTZ, M. E. New eclipsing binaries with mercury-manganese stars. Monthly Notices of the Royal Astronomical Society, v. 506, n. 1, p. L40-L44, SEP 2021. Web of Science Citations: 1.
LABADIE-BARTZ, JONATHAN; BAADE, DIETRICH; CARCIOFI, ALEX C.; RUBIO, AMANDA; RIVINIUS, THOMAS; BORRE, CAMILLA C.; MARTAYAN, CHRISTOPHE; SIVERD, ROBERT J. Short-term variability and mass loss in Be stars - VI. Frequency groups in gamma Cas detected by TESS. Monthly Notices of the Royal Astronomical Society, v. 502, n. 1, p. 242-259, MAR 2021. Web of Science Citations: 0.
KOCHUKHOV, O.; JOHNSTON, C.; LABADIE-BARTZ, J.; SHETYE, S.; RYABCHIKOVA, T. A.; TKACHENKO, A.; SHULTZ, M. E. V772 Cas: an ellipsoidal HgMn star in an eclipsing binary. Monthly Notices of the Royal Astronomical Society, v. 500, n. 2, p. 2578-2590, JAN 2021. Web of Science Citations: 0.
KOCHUKHOV, O.; JOHNSTON, C.; LABADIE-BARTZ, J.; SHETYE, S.; RYABCHIKOVA, T. A.; TKACHENKO, A.; SHULTZ, M. E. V772 Cas: an ellipsoidal HgMn star in an eclipsing binary. Monthly Notices of the Royal Astronomical Society, v. 500, n. 2, p. 2577-2589, JAN 2021. Web of Science Citations: 1.
MARTINEZ, ROMY RODRIGUEZ; GAUDI, B. SCOTT; RODRIGUEZ, JOSEPH E.; ZHOU, GEORGE; LABADIE-BARTZ, JONATHAN; QUINN, SAMUEL N.; PENEV, KALOYAN; TAN, THIAM-GUAN; LATHAM, DAVID W.; PAREDES, LEONARDO A.; KIELKOPF, JOHN F.; ADDISON, BRETT; WRIGHT, DUNCAN J.; TESKE, JOHANNA; HOWELL, STEVE B.; CIARDI, DAVID; ZIEGLER, CARL; STASSUN, KEIVAN G.; JOHNSON, MARSHALL C.; EASTMAN, JASON D.; SIVERD, ROBERT J.; BEATTY, THOMAS G.; BOUMA, LUKE; BEDDING, TIMOTHY; PEPPER, JOSHUA; WINN, JOSHUA; LUND, MICHAEL B.; VILLANUEVA, JR., STEVEN; STEVENS, DANIEL J.; JENSEN, ERIC L. N.; KILBY, COLEMAN; CRANE, JEFFREY D.; TOKOVININ, ANDREI; EVERETT, MARK E.; TINNEY, C. G.; FAUSNAUGH, MICHAEL; COHEN, DAVID H.; BAYLISS, DANIEL; BIERYLA, ALLYSON; CARGILE, PHILLIP A.; COLLINS, KAREN A.; CONTI, DENNIS M.; COLON, KNICOLE D.; CURTIS, IVAN A.; DEPOY, D. L.; EVANS, PHIL; FELIZ, DAX L.; GREGORIO, JOAO; ROTHENBERG, JASON; JAMES, DAVID J.; JONER, MICHAEL D.; KUHN, RUDOLF B.; MANNER, MARK; KHAKPASH, SOMAYEH; MARSHALL, JENNIFER L.; MCLEOD, KIM K.; PENNY, MATTHEW T.; REED, PHILLIP A.; RELLES, HOWARD M.; STEPHENS, DENISE C.; STOCKDALE, CHRIS; TRUEBLOOD, MARK; TRUEBLOOD, PAT; YAO, XINYU; ZAMBELLI, ROBERTO; VANDERSPEK, ROLAND; SEAGER, SARA; JENKINS, JON M.; HENRY, TODD J.; JAMES, HODARI-SADIKI; JAO, WEI-CHUN; WANG, SHARON XUESONG; BUTLER, PAUL; THOMPSON, IAN; SHECTMAN, STEPHEN; WITTENMYER, ROBERT; BOWLER, BRENDAN P.; HORNER, JONATHAN; KANE, STEPHEN R.; MENGEL, MATTHEW W.; MORTON, TIMOTHY D.; OKUMURA, JACK; PLAVCHAN, PETER; ZHANG, HUI; SCOTT, NICHOLAS J.; MATSON, RACHEL A.; MANN, ANDREW W.; DRAGOMIR, DIANA; GUNTHER, MAX; TING, ERIC B.; GLIDDEN, ANA; QUINTANA, V, ELISA. KELT-25 b and KELT-26 b: A Hot Jupiter and a Substellar Companion Transiting Young A Stars Observed by TESS. ASTRONOMICAL JOURNAL, v. 160, n. 3 SEP 2020. Web of Science Citations: 0.
HARMANEC, P.; LIPTAK, J.; KOUBSKY, P.; BOZIC, H.; LABADIE-BARTZ, J.; SLECHTA, M.; YANG, S.; HARMANEC, A. A new study of the spectroscopic binary 7 Vul with a Be star primary. Astronomy & Astrophysics, v. 639, JUL 3 2020. Web of Science Citations: 0.
LABADIE-BARTZ, JONATHAN; HANDLER, GERALD; PEPPER, JOSHUA; BALONA, LUIS; DE CAT, PETER; STEVENS, DANIEL J.; LUND, MICHAEL B.; STASSUN, KEIVAN G.; RODRIGUEZ, JOSEPH E.; SIVERD, ROBERT J.; JAMES, DAVID J.; KUHN, RUDOLF B. New Beta Cephei Stars from the KELT Project. ASTRONOMICAL JOURNAL, v. 160, n. 1 JUL 2020. Web of Science Citations: 0.
SHULTZ, M. E.; JOHNSTON, C.; LABADIE-BARTZ, J.; PETIT, V.; DAVID-URAZ, A.; KOCHUKHOV, O.; WADE, G. A.; PEPPER, J.; STASSUN, K. G.; RODRIGUEZ, J. E.; LUND, M. B.; JAMES, D. J. MOBSTER - III. HD62658: a magnetic Bp star in an eclipsing binary with a non-magnetic `identical twin'. Monthly Notices of the Royal Astronomical Society, v. 490, n. 3, p. 4155-4166, DEC 2019. Web of Science Citations: 0.
RODRIGUEZ, JOSEPH E.; EASTMAN, JASON D.; ZHOU, GEORGE; QUINN, SAMUEL N.; BEATTY, THOMAS G.; PENEV, KALOYAN; JOHNSON, MARSHALL C.; CARGILE, PHILLIP A.; LATHAM, DAVID W.; BIERYLA, ALLYSON; COLLINS, KAREN A.; DRESSING, COURTNEY D.; CIARDI, DAVID R.; RELLES, HOWARD M.; MURAWSKI, GABRIEL; NISHIUMI, TAKU; YONEHARA, ATSUNORI; ISHIMARU, RYO; YOSHIDA, FUMI; GREGORIO, JOAO; LUND, MICHAEL B.; STEVENS, DANIEL J.; STASSUN, KEIVAN G.; GAUDI, B. SCOTT; COLON, KNICOLE D.; PEPPER, JOSHUA; NARITA, NORIO; AWIPHAN, SUPACHAI; CHUANRAKSASAT, PONGPICHIT; BENNI, PAUL; ZAMBELLI, ROBERTO; GARRISON, LEHMAN H.; WILSON, MAURICE L.; CORNACHIONE, MATTHEW A.; WANG, SHARON X.; LABADIE-BARTZ, JONATHAN; RODRIGUEZ, ROMY; SIVERD, ROBERT J.; YAO, XINYU; BAYLISS, DANIEL; BERLIND, PERRY; CALKINS, MICHAEL L.; CHRISTIANSEN, JESSIE L.; COHEN, DAVID H.; CONTI, DENNIS M.; CURTIS, IVAN A.; DEPOY, D. L.; ESQUERDO, GILBERT A.; EVANS, PHIL; FELIZ, DAX; FULTON, BENJAMIN J.; HOLOIEN, THOMAS W. S.; JAMES, DAVID J.; JAYASINGHE, THARINDU; JANG-CONDELL, HANNAH; JENSEN, ERIC L. N.; JOHNSON, JOHN A.; JONER, MICHAEL D.; KHAKPASH, SOMAYEH; KIELKOPF, JOHN F.; KUHN, RUDOLF B.; MANNER, MARK; MARSHALL, JENNIFER L.; MCLEOD, KIM K.; MCCRADY, NATE; OBERST, THOMAS E.; OELKERS, RYAN J.; PENNY, MATTHEW T.; REED, PHILLIP A.; SLISKI, DAVID H.; SHAPPEE, B. J.; STEPHENS, DENISE C.; STOCKDALE, CHRIS; TAN, THIAM-GUAN; TRUEBLOOD, MARK; TRUEBLOOD, PAT; VILLANUEVA, JR., STEVEN; WITTENMYER, ROBERT A.; WRIGHT, JASON T. KELT-24b: A 5M(J) Planet on a 5.6 day Well-aligned Orbit around the Young V=8.3 F-star HD 93148. ASTRONOMICAL JOURNAL, v. 158, n. 5 NOV 2019. Web of Science Citations: 0.
JOHNS, DANIEL; REED, PHILLIP A.; RODRIGUEZ, JOSEPH E.; PEPPER, JOSHUA; STASSUN, KEIVAN G.; PENEV, KALOYAN; GAUDI, B. SCOTT; LABADIE-BARTZ, JONATHAN; FULTON, BENJAMIN J.; QUINN, SAMUEL N.; EASTMAN, JASON D.; CIARDI, DAVID R.; HIRSCH, LEA; STEVENS, DANIEL J.; STEVENS, CATHERINE P.; OBERST, THOMAS E.; COHEN, DAVID H.; JENSEN, ERIC L. N.; BENNI, PAUL; VILLANUEVA, JR., STEVEN; MURAWSH, GABRIEL; BIERYLA, ALLYSON; LATHAM, DAVID W.; VANAVERBEKE, SIEGFRIED; DUBOIS, FRANKY; RAU, STEVE; LOGIE, LUDWIG; RAUENZAHN, RYAN F.; WITTENMYER, ROBERT A.; ZAMBELLI, ROBERTO; BAYLISS, DANIEL; BEATTY, THOMAS G.; COLLINS, KAREN A.; COLON, KNICOLE D.; CURTIS, IVAN A.; EVANS, PHIL; GREGORIO, JOAO; JAMES, DAVID; DEPOY, D. L.; JOHNSON, MARSHALL C.; JONER, MICHAEL D.; KASPER, DAVID H.; KHAKPASH, SOMAYEH; KIELKOPF, JOHN F.; KUHN, RUDOLF B.; LUND, MICHAEL B.; MANNER, MARK; MARSHALL, JENNIFER L.; MCLEOD, KIM K.; PENNY, MATTHEW T.; RELLES, HOWARD; SIVERD, ROBERT J.; STEPHENS, DENISE C.; STOCKDALE, CHRIS; TAN, THIAM-GUAN; TRUEBLOOD, MARK; TRUEBLOOD, PAT; YAO, XINYU. KELT-23Ab: A Hot Jupiter Transiting a Near-solar Twin Close to the TESS and JWST Continuous Viewing Zones. ASTRONOMICAL JOURNAL, v. 158, n. 2 AUG 2019. Web of Science Citations: 0.
DAVID-URAZ, A.; NEINER, C.; SIKORA, J.; BOWMAN, D. M.; PETIT, V.; CHOWDHURY, S.; HANDLER, G.; PERGEORELIS, M.; CANTIELLO, M.; COHEN, D. H.; ERBA, C.; KESZTHELYI, Z.; KHALACK, V.; KOBZAR, O.; KOCHUKHOV, O.; LABADIE-BARTZ, J.; LOVEKIN, C. C.; MACINNIS, R.; OWOCKI, S. P.; PABLO, H.; SHULTZ, M. E.; UD-DOULA, A.; WADE, G. A.; COLLABORATION, MOBSTER. Magnetic OB[A] Stars with TESS: probing their Evolutionary and Rotational properties (MOBSTER) - I. First-light observations of known magnetic B and A stars. Monthly Notices of the Royal Astronomical Society, v. 487, n. 1, p. 304-317, JUL 2019. Web of Science Citations: 5.
LABADIE-BARTZ, JONATHAN; RODRIGUEZ, JOSEPH E.; STASSUN, KEIVAN G.; CIARDI, DAVID R.; PENEV, KALOYAN; JOHNSON, MARSHALL C.; GAUDI, B. SCOTT; COLON, KNICOLE D.; BIERYLA, ALLYSON; LATHAM, DAVID W.; PEPPER, JOSHUA; COLLINS, KAREN A.; EVANS, PHIL; RELLES, HOWARD; SIVERD, ROBERT J.; BENTO, JOAO; YAO, XINYU; STOCKDALE, CHRIS; TAN, THIAM-GUAN; ZHOU, GEORGE; EASTMAN, JASON D.; ALBROW, MICHAEL D.; BAYLISS, DANIEL; BEATTY, THOMAS G.; BERLIND, PERRY; BOZZA, VALERIO; CALKINS, MICHAEL L.; COHEN, DAVID H.; CURTIS, IVAN A.; ESQUERDO, GILBERT A.; FELIZ, DAX; FULTON, BENJAMIN J.; GREGORIO, JOAO; JAMES, DAVID; JENSEN, ERIC L. N.; JOHNSON, JOHN A.; JOHNSON, SAMSON A.; JONER, MICHAEL D.; KASPER, DAVID; KIELKOPF, JOHN F.; KUHN, RUDOLF B.; LUND, MICHAEL B.; MALPAS, AMBER; MANNER, MARK; MCCRADY, NATE; MCLEOD, KIM K.; OBERST, THOMAS E.; PENNY, MATTHEW T.; REED, PHILLIP A.; SLISKI, DAVID H.; STEPHENS, DENISE C.; STEVENS, DANIEL J.; VILLANUEVA, STEVEN; WITTENMYER, ROBERT A.; WRIGHT, J. T.; ZAMBELLI, ROBERTO. KELT-22Ab: A Massive, Short-Period Hot Jupiter Transiting a Near-solar Twin. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, v. 240, n. 1 JAN 2019. Web of Science Citations: 3.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.