University of Hertfordshire

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From the same journal

Classical T Tauri stars with VPHAS+ -I: H α and u-band accretion rates in the Lagoon Nebula M8

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Classical T Tauri stars with VPHAS+ -I : H α and u-band accretion rates in the Lagoon Nebula M8. / Kalari, V. M.; Vink, J. S.; Drew, J.E.; Barentsen, G.; Drake, J. J.; Eislöffel, J.; Martín, E.L.; Parker, Q. A.; Unruh, Y.C.; Walton, N. A.; Wright, N. J.

In: Monthly Notices of the Royal Astronomical Society, Vol. 453, No. 1, 11.10.2015, p. 1026-1046.

Research output: Contribution to journalArticlepeer-review

Harvard

Kalari, VM, Vink, JS, Drew, JE, Barentsen, G, Drake, JJ, Eislöffel, J, Martín, EL, Parker, QA, Unruh, YC, Walton, NA & Wright, NJ 2015, 'Classical T Tauri stars with VPHAS+ -I: H α and u-band accretion rates in the Lagoon Nebula M8', Monthly Notices of the Royal Astronomical Society, vol. 453, no. 1, pp. 1026-1046. https://doi.org/10.1093/mnras/stv1676

APA

Kalari, V. M., Vink, J. S., Drew, J. E., Barentsen, G., Drake, J. J., Eislöffel, J., Martín, E. L., Parker, Q. A., Unruh, Y. C., Walton, N. A., & Wright, N. J. (2015). Classical T Tauri stars with VPHAS+ -I: H α and u-band accretion rates in the Lagoon Nebula M8. Monthly Notices of the Royal Astronomical Society, 453(1), 1026-1046. https://doi.org/10.1093/mnras/stv1676

Vancouver

Author

Kalari, V. M. ; Vink, J. S. ; Drew, J.E. ; Barentsen, G. ; Drake, J. J. ; Eislöffel, J. ; Martín, E.L. ; Parker, Q. A. ; Unruh, Y.C. ; Walton, N. A. ; Wright, N. J. / Classical T Tauri stars with VPHAS+ -I : H α and u-band accretion rates in the Lagoon Nebula M8. In: Monthly Notices of the Royal Astronomical Society. 2015 ; Vol. 453, No. 1. pp. 1026-1046.

Bibtex

@article{918101ca2c7b4203aa11fb3acf7c9552,
title = "Classical T Tauri stars with VPHAS+ -I: H α and u-band accretion rates in the Lagoon Nebula M8",
abstract = "We estimate the accretion rates of 235 Classical T Tauri star (CTTS) candidates in the Lagoon Nebula using $ugri$H$\alpha$ photometry from the VPHAS+ survey. Our sample consists of stars displaying H$\alpha$-excess, the intensity of which is used to derive accretion rates. For a subset of 87 stars, the intensity of the $u$-band excess is also used to estimate accretion rates. We find the mean variation in accretion rates measured using H$\alpha$ and $u$-band intensities to be $\sim$ 0.17 dex, agreeing with previous estimates (0.04-0.4 dex) but for a much larger sample. The spatial distribution of CTTS align with the location of protostars and molecular gas suggesting that they retain an imprint of the natal gas fragmentation process. Strong accretors are concentrated spatially, while weak accretors are more distributed. Our results do not support the sequential star forming processes suggested in the literature.",
keywords = "astro-ph.SR, astro-ph.IM",
author = "Kalari, {V. M.} and Vink, {J. S.} and J.E. Drew and G. Barentsen and Drake, {J. J.} and J. Eisl{\"o}ffel and E.L. Mart{\'i}n and Parker, {Q. A.} and Y.C. Unruh and Walton, {N. A.} and Wright, {N. J.}",
year = "2015",
month = oct,
day = "11",
doi = "10.1093/mnras/stv1676",
language = "English",
volume = "453",
pages = "1026--1046",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "1",

}

RIS

TY - JOUR

T1 - Classical T Tauri stars with VPHAS+ -I

T2 - H α and u-band accretion rates in the Lagoon Nebula M8

AU - Kalari, V. M.

AU - Vink, J. S.

AU - Drew, J.E.

AU - Barentsen, G.

AU - Drake, J. J.

AU - Eislöffel, J.

AU - Martín, E.L.

AU - Parker, Q. A.

AU - Unruh, Y.C.

AU - Walton, N. A.

AU - Wright, N. J.

PY - 2015/10/11

Y1 - 2015/10/11

N2 - We estimate the accretion rates of 235 Classical T Tauri star (CTTS) candidates in the Lagoon Nebula using $ugri$H$\alpha$ photometry from the VPHAS+ survey. Our sample consists of stars displaying H$\alpha$-excess, the intensity of which is used to derive accretion rates. For a subset of 87 stars, the intensity of the $u$-band excess is also used to estimate accretion rates. We find the mean variation in accretion rates measured using H$\alpha$ and $u$-band intensities to be $\sim$ 0.17 dex, agreeing with previous estimates (0.04-0.4 dex) but for a much larger sample. The spatial distribution of CTTS align with the location of protostars and molecular gas suggesting that they retain an imprint of the natal gas fragmentation process. Strong accretors are concentrated spatially, while weak accretors are more distributed. Our results do not support the sequential star forming processes suggested in the literature.

AB - We estimate the accretion rates of 235 Classical T Tauri star (CTTS) candidates in the Lagoon Nebula using $ugri$H$\alpha$ photometry from the VPHAS+ survey. Our sample consists of stars displaying H$\alpha$-excess, the intensity of which is used to derive accretion rates. For a subset of 87 stars, the intensity of the $u$-band excess is also used to estimate accretion rates. We find the mean variation in accretion rates measured using H$\alpha$ and $u$-band intensities to be $\sim$ 0.17 dex, agreeing with previous estimates (0.04-0.4 dex) but for a much larger sample. The spatial distribution of CTTS align with the location of protostars and molecular gas suggesting that they retain an imprint of the natal gas fragmentation process. Strong accretors are concentrated spatially, while weak accretors are more distributed. Our results do not support the sequential star forming processes suggested in the literature.

KW - astro-ph.SR

KW - astro-ph.IM

U2 - 10.1093/mnras/stv1676

DO - 10.1093/mnras/stv1676

M3 - Article

VL - 453

SP - 1026

EP - 1046

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 1

ER -