A peculiar young eruptive star in the dark cloud Lynds 1340

M. Kun; E. Szegedi-Elek; A. Moór; P. Brahm; J. A. Acosta-Pulido; D. Apai; J. Kelemen; A. Pl; M. Rcz; Zs Regly; R. Szakts; N. Szalai; A. Szing

doi:10.1088/2041-8205/733/1/L8

A peculiar young eruptive star in the dark cloud Lynds 1340

M. Kun, E. Szegedi-Elek, A. Moór, P. Brahm, J. A. Acosta-Pulido, D. Apai, J. Kelemen, A. Pl, M. Rcz, Zs Regly, R. Szakts, N. Szalai, A. Szing

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21 Scopus citations

Abstract

We conducted a long-term optical photometric and spectroscopic monitoring of the strongly variable, accreting young sun-like star [KOS94] HA11, associated with the dark cloud Lynds 1340 that exhibited large amplitude (5-6 mag in the I _C band) brightness variations on 2-3 years timescales, flat spectral energy distribution (SED), and extremely strong (300≲ EW/ ≲ 900) Hα emission. In this Letter we describe the basic properties of the star, derived from our observations between 1999 and 2011, and put into context the observed phenomena. The observed variations in the emission spectra, near-infrared colors, and SED suggest that [KOS94] HA11 (spectral type: K7-M0) is an eruptive young star, possibly similar in nature to V1647 Ori: its large-scale photometric variations are governed by variable accretion rate, associated with variations in the inner disk structure. The star recently has undergone strong and rapid brightness variations, thus its further observations may offer a rare opportunity for studying structural and chemical rearrangements of the inner disk, induced by variable central luminosity.

Original language	English (US)
Article number	L8
Journal	Astrophysical Journal Letters
Volume	733
Issue number	1 PART 2
DOIs	https://doi.org/10.1088/2041-8205/733/1/L8
State	Published - May 20 2011

Keywords

stars: formation
stars: individual ([KOS94] HA11)
stars: pre-main sequence
stars: variables: T Tauri, Herbig Ae/Be

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/2041-8205/733/1/L8

Cite this

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title = "A peculiar young eruptive star in the dark cloud Lynds 1340",

abstract = "We conducted a long-term optical photometric and spectroscopic monitoring of the strongly variable, accreting young sun-like star [KOS94] HA11, associated with the dark cloud Lynds 1340 that exhibited large amplitude (5-6 mag in the I C band) brightness variations on 2-3 years timescales, flat spectral energy distribution (SED), and extremely strong (300≲ EW/ ≲ 900) Hα emission. In this Letter we describe the basic properties of the star, derived from our observations between 1999 and 2011, and put into context the observed phenomena. The observed variations in the emission spectra, near-infrared colors, and SED suggest that [KOS94] HA11 (spectral type: K7-M0) is an eruptive young star, possibly similar in nature to V1647 Ori: its large-scale photometric variations are governed by variable accretion rate, associated with variations in the inner disk structure. The star recently has undergone strong and rapid brightness variations, thus its further observations may offer a rare opportunity for studying structural and chemical rearrangements of the inner disk, induced by variable central luminosity.",

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author = "M. Kun and E. Szegedi-Elek and A. Mo{\'o}r and P. Brahm and Acosta-Pulido, {J. A.} and D. Apai and J. Kelemen and A. Pl and M. Rcz and Zs Regly and R. Szakts and N. Szalai and A. Szing",

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T1 - A peculiar young eruptive star in the dark cloud Lynds 1340

AU - Kun, M.

AU - Szegedi-Elek, E.

AU - Moór, A.

AU - Brahm, P.

AU - Acosta-Pulido, J. A.

AU - Apai, D.

AU - Kelemen, J.

AU - Pl, A.

AU - Rcz, M.

AU - Regly, Zs

AU - Szakts, R.

AU - Szalai, N.

AU - Szing, A.

PY - 2011/5/20

Y1 - 2011/5/20

N2 - We conducted a long-term optical photometric and spectroscopic monitoring of the strongly variable, accreting young sun-like star [KOS94] HA11, associated with the dark cloud Lynds 1340 that exhibited large amplitude (5-6 mag in the I C band) brightness variations on 2-3 years timescales, flat spectral energy distribution (SED), and extremely strong (300≲ EW/ ≲ 900) Hα emission. In this Letter we describe the basic properties of the star, derived from our observations between 1999 and 2011, and put into context the observed phenomena. The observed variations in the emission spectra, near-infrared colors, and SED suggest that [KOS94] HA11 (spectral type: K7-M0) is an eruptive young star, possibly similar in nature to V1647 Ori: its large-scale photometric variations are governed by variable accretion rate, associated with variations in the inner disk structure. The star recently has undergone strong and rapid brightness variations, thus its further observations may offer a rare opportunity for studying structural and chemical rearrangements of the inner disk, induced by variable central luminosity.

AB - We conducted a long-term optical photometric and spectroscopic monitoring of the strongly variable, accreting young sun-like star [KOS94] HA11, associated with the dark cloud Lynds 1340 that exhibited large amplitude (5-6 mag in the I C band) brightness variations on 2-3 years timescales, flat spectral energy distribution (SED), and extremely strong (300≲ EW/ ≲ 900) Hα emission. In this Letter we describe the basic properties of the star, derived from our observations between 1999 and 2011, and put into context the observed phenomena. The observed variations in the emission spectra, near-infrared colors, and SED suggest that [KOS94] HA11 (spectral type: K7-M0) is an eruptive young star, possibly similar in nature to V1647 Ori: its large-scale photometric variations are governed by variable accretion rate, associated with variations in the inner disk structure. The star recently has undergone strong and rapid brightness variations, thus its further observations may offer a rare opportunity for studying structural and chemical rearrangements of the inner disk, induced by variable central luminosity.

KW - stars: formation

KW - stars: individual ([KOS94] HA11)

KW - stars: pre-main sequence

KW - stars: variables: T Tauri, Herbig Ae/Be

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A peculiar young eruptive star in the dark cloud Lynds 1340

Abstract

Keywords

ASJC Scopus subject areas

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Optical and IR photometry of [KOS94] HA11

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A peculiar young eruptive star in the dark cloud Lynds 1340

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

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Fingerprint

Datasets

Optical and IR photometry of [KOS94] HA11

Cite this