Evidence for disc regulation in the lowest mass stars of the young stellar cluster NGC 2264

In the pre-main-sequence stage, star–disc interactions have been shown to remove stellar angular momentum and regulate the rotation periods of stars with M2 and earlier spectral types. Whether disc regulation also extends to stars with later spectral types still remains a matter of debate. Here, we...

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Autores principales: Orcajo, Santiago, Cieza, Lucas A., Gamen, Roberto Claudio, Peterson, Dawn E.
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2019
Materias:
Ciencias Astronómicas
Astronomía
stars: fundamental parameters
stars: low-mass
open clusters and associations: individual: NGC 2264
stars: rotation
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/125506
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-125506
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Astronomía
stars: fundamental parameters
stars: low-mass
open clusters and associations: individual: NGC 2264
stars: rotation
spellingShingle Ciencias Astronómicas
Astronomía
stars: fundamental parameters
stars: low-mass
open clusters and associations: individual: NGC 2264
stars: rotation
Orcajo, Santiago
Cieza, Lucas A.
Gamen, Roberto Claudio
Peterson, Dawn E.
Evidence for disc regulation in the lowest mass stars of the young stellar cluster NGC 2264
topic_facet Ciencias Astronómicas
Astronomía
stars: fundamental parameters
stars: low-mass
open clusters and associations: individual: NGC 2264
stars: rotation
description In the pre-main-sequence stage, star–disc interactions have been shown to remove stellar angular momentum and regulate the rotation periods of stars with M2 and earlier spectral types. Whether disc regulation also extends to stars with later spectral types still remains a matter of debate. Here, we present a star–disc interaction study in a sample of over 180 stars with spectral types M3 and later (corresponding to stellar masses ≤0.3M⊙⁠) in young stellar cluster NGC 2264. Combining rotation periods from the literature, new and literature spectral types, and newly presented deep Spitzer observations, we show that stars with masses below 0.3M⊙ with discs also rotate slower than stars without a disc in the same mass regime. Our results demonstrate that disc regulation still operates in these low-mass stars, although the efficiency of this process might be lower than in higher mass objects. We confirm that stars with spectral types earlier and later than M2 have distinct period distributions and that stars with spectral types M5 and later rotate even faster M3 and M4-type stars.
format Articulo
Preprint
author Orcajo, Santiago
Cieza, Lucas A.
Gamen, Roberto Claudio
Peterson, Dawn E.
author_facet Orcajo, Santiago
Cieza, Lucas A.
Gamen, Roberto Claudio
Peterson, Dawn E.
author_sort Orcajo, Santiago
title Evidence for disc regulation in the lowest mass stars of the young stellar cluster NGC 2264
title_short Evidence for disc regulation in the lowest mass stars of the young stellar cluster NGC 2264
title_full Evidence for disc regulation in the lowest mass stars of the young stellar cluster NGC 2264
title_fullStr Evidence for disc regulation in the lowest mass stars of the young stellar cluster NGC 2264
title_full_unstemmed Evidence for disc regulation in the lowest mass stars of the young stellar cluster NGC 2264
title_sort evidence for disc regulation in the lowest mass stars of the young stellar cluster ngc 2264
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/125506
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AT gamenrobertoclaudio evidencefordiscregulationinthelowestmassstarsoftheyoungstellarclusterngc2264
AT petersondawne evidencefordiscregulationinthelowestmassstarsoftheyoungstellarclusterngc2264
bdutipo_str Repositorios
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