Discovery and observations of ASASSN-13db, an EX lupi-type accretion event on a low-mass T tauri star

Thomas W. S. Holoien (Lead / Corresponding author), J. L. Prieto, K. Z. Stanek, C. S. Kochanek, B. J. Shappee, Z. Zhu, A. Sicilia-Aguilar, D. Grupe, K. Croxall, David J. Adams, J. D. Simon, Nicholas W. Morrell, S. M. McGraw, R. M. Wagner, Ujani Basu, J. F. Beacom, D. Bersier, J. Brimacombe, J. Jencson, G. Pojmanski & 3 others S. G. Starrfield, D. M. Szczygie, C. E. Woodward

Research output: Contribution to journalArticle

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Abstract

We discuss ASASSN-13db, an EX Lupi-type ("EXor") accretion event on the young stellar object (YSO) SDSS J051011.01-032826.2 (hereafter SDSSJ0510) discovered by the All-Sky Automated Survey for SuperNovae (ASAS-SN). Using archival photometric data of SDSSJ0510 we construct a pre-outburst spectral energy distribution and find that it is consistent with a low-mass class II YSO near the Orion star forming region (d ~ 420 pc). We present follow-up photometric and spectroscopic observations of the source after the ?V ~ -5.4 mag outburst that began in 2013 September and ended in early 2014. These data indicate an increase in temperature and luminosity consistent with an accretion rate of 10-7 M? yr-1 , three or more orders of magnitude greater than in quiescence. Spectroscopic observations show a forest of narrow emission lines dominated by neutral metallic lines from Fe I and some low-ionization lines. The properties of ASASSN-13db are similar to those of the EXor prototype EX Lupi during its strongest observed outburst in late 2008.
Original languageEnglish
Article numberL35
Number of pages6
JournalAstrophysical Journal Letters
Volume785
Issue number2
DOIs
Publication statusPublished - 20 Apr 2014

Fingerprint

T Tauri stars
outburst
accretion
spectral energy distribution
supernovae
sky
luminosity
prototypes
stars
ionization
temperature
energy
young

Keywords

  • Stars: activity Stars: individual (SDSS J051011.01?032826.2) Stars: pre-main sequence

Cite this

Holoien, T. W. S., Prieto, J. L., Stanek, K. Z., Kochanek, C. S., Shappee, B. J., Zhu, Z., ... Woodward, C. E. (2014). Discovery and observations of ASASSN-13db, an EX lupi-type accretion event on a low-mass T tauri star. Astrophysical Journal Letters, 785(2), [L35]. https://doi.org/10.1088/2041-8205/785/2/L35
Holoien, Thomas W. S. ; Prieto, J. L. ; Stanek, K. Z. ; Kochanek, C. S. ; Shappee, B. J. ; Zhu, Z. ; Sicilia-Aguilar, A. ; Grupe, D. ; Croxall, K. ; Adams, David J. ; Simon, J. D. ; Morrell, Nicholas W. ; McGraw, S. M. ; Wagner, R. M. ; Basu, Ujani ; Beacom, J. F. ; Bersier, D. ; Brimacombe, J. ; Jencson, J. ; Pojmanski, G. ; Starrfield, S. G. ; Szczygie, D. M. ; Woodward, C. E. / Discovery and observations of ASASSN-13db, an EX lupi-type accretion event on a low-mass T tauri star. In: Astrophysical Journal Letters. 2014 ; Vol. 785, No. 2.
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title = "Discovery and observations of ASASSN-13db, an EX lupi-type accretion event on a low-mass T tauri star",
abstract = "We discuss ASASSN-13db, an EX Lupi-type ({"}EXor{"}) accretion event on the young stellar object (YSO) SDSS J051011.01-032826.2 (hereafter SDSSJ0510) discovered by the All-Sky Automated Survey for SuperNovae (ASAS-SN). Using archival photometric data of SDSSJ0510 we construct a pre-outburst spectral energy distribution and find that it is consistent with a low-mass class II YSO near the Orion star forming region (d ~ 420 pc). We present follow-up photometric and spectroscopic observations of the source after the ?V ~ -5.4 mag outburst that began in 2013 September and ended in early 2014. These data indicate an increase in temperature and luminosity consistent with an accretion rate of 10-7 M? yr-1 , three or more orders of magnitude greater than in quiescence. Spectroscopic observations show a forest of narrow emission lines dominated by neutral metallic lines from Fe I and some low-ionization lines. The properties of ASASSN-13db are similar to those of the EXor prototype EX Lupi during its strongest observed outburst in late 2008.",
keywords = "Stars: activity Stars: individual (SDSS J051011.01?032826.2) Stars: pre-main sequence",
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note = "J.F.B. is supported by NSF grant PHY-1101216. J.D.S. and J.J.A. are supported by NSF grant AST-1108811. 10.1088/2041-8205/785/2/L35 Article 2041-8205 L35",
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Holoien, TWS, Prieto, JL, Stanek, KZ, Kochanek, CS, Shappee, BJ, Zhu, Z, Sicilia-Aguilar, A, Grupe, D, Croxall, K, Adams, DJ, Simon, JD, Morrell, NW, McGraw, SM, Wagner, RM, Basu, U, Beacom, JF, Bersier, D, Brimacombe, J, Jencson, J, Pojmanski, G, Starrfield, SG, Szczygie, DM & Woodward, CE 2014, 'Discovery and observations of ASASSN-13db, an EX lupi-type accretion event on a low-mass T tauri star', Astrophysical Journal Letters, vol. 785, no. 2, L35. https://doi.org/10.1088/2041-8205/785/2/L35

Discovery and observations of ASASSN-13db, an EX lupi-type accretion event on a low-mass T tauri star. / Holoien, Thomas W. S. (Lead / Corresponding author); Prieto, J. L.; Stanek, K. Z.; Kochanek, C. S.; Shappee, B. J.; Zhu, Z.; Sicilia-Aguilar, A.; Grupe, D.; Croxall, K.; Adams, David J.; Simon, J. D.; Morrell, Nicholas W.; McGraw, S. M.; Wagner, R. M.; Basu, Ujani; Beacom, J. F.; Bersier, D.; Brimacombe, J.; Jencson, J.; Pojmanski, G.; Starrfield, S. G.; Szczygie, D. M.; Woodward, C. E.

In: Astrophysical Journal Letters, Vol. 785, No. 2, L35, 20.04.2014.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Discovery and observations of ASASSN-13db, an EX lupi-type accretion event on a low-mass T tauri star

AU - Holoien, Thomas W. S.

AU - Prieto, J. L.

AU - Stanek, K. Z.

AU - Kochanek, C. S.

AU - Shappee, B. J.

AU - Zhu, Z.

AU - Sicilia-Aguilar, A.

AU - Grupe, D.

AU - Croxall, K.

AU - Adams, David J.

AU - Simon, J. D.

AU - Morrell, Nicholas W.

AU - McGraw, S. M.

AU - Wagner, R. M.

AU - Basu, Ujani

AU - Beacom, J. F.

AU - Bersier, D.

AU - Brimacombe, J.

AU - Jencson, J.

AU - Pojmanski, G.

AU - Starrfield, S. G.

AU - Szczygie, D. M.

AU - Woodward, C. E.

N1 - J.F.B. is supported by NSF grant PHY-1101216. J.D.S. and J.J.A. are supported by NSF grant AST-1108811. 10.1088/2041-8205/785/2/L35 Article 2041-8205 L35

PY - 2014/4/20

Y1 - 2014/4/20

N2 - We discuss ASASSN-13db, an EX Lupi-type ("EXor") accretion event on the young stellar object (YSO) SDSS J051011.01-032826.2 (hereafter SDSSJ0510) discovered by the All-Sky Automated Survey for SuperNovae (ASAS-SN). Using archival photometric data of SDSSJ0510 we construct a pre-outburst spectral energy distribution and find that it is consistent with a low-mass class II YSO near the Orion star forming region (d ~ 420 pc). We present follow-up photometric and spectroscopic observations of the source after the ?V ~ -5.4 mag outburst that began in 2013 September and ended in early 2014. These data indicate an increase in temperature and luminosity consistent with an accretion rate of 10-7 M? yr-1 , three or more orders of magnitude greater than in quiescence. Spectroscopic observations show a forest of narrow emission lines dominated by neutral metallic lines from Fe I and some low-ionization lines. The properties of ASASSN-13db are similar to those of the EXor prototype EX Lupi during its strongest observed outburst in late 2008.

AB - We discuss ASASSN-13db, an EX Lupi-type ("EXor") accretion event on the young stellar object (YSO) SDSS J051011.01-032826.2 (hereafter SDSSJ0510) discovered by the All-Sky Automated Survey for SuperNovae (ASAS-SN). Using archival photometric data of SDSSJ0510 we construct a pre-outburst spectral energy distribution and find that it is consistent with a low-mass class II YSO near the Orion star forming region (d ~ 420 pc). We present follow-up photometric and spectroscopic observations of the source after the ?V ~ -5.4 mag outburst that began in 2013 September and ended in early 2014. These data indicate an increase in temperature and luminosity consistent with an accretion rate of 10-7 M? yr-1 , three or more orders of magnitude greater than in quiescence. Spectroscopic observations show a forest of narrow emission lines dominated by neutral metallic lines from Fe I and some low-ionization lines. The properties of ASASSN-13db are similar to those of the EXor prototype EX Lupi during its strongest observed outburst in late 2008.

KW - Stars: activity Stars: individual (SDSS J051011.01?032826.2) Stars: pre-main sequence

U2 - 10.1088/2041-8205/785/2/L35

DO - 10.1088/2041-8205/785/2/L35

M3 - Article

VL - 785

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

SN - 2041-8205

IS - 2

M1 - L35

ER -