New debris-disk candidates: 24 Micron stellar excesses at 100 million years

Nadya Gorlova; Deborah L. Padgett; George H. Rieke; James Muzerolle; Jane E. Morrison; Karl D. Gordon; Chad W. Engelbracht; Dean C. Hines; Joannah L Hinz; Alberto Noriega-Crespo; Luisa Rebull; John A. Stansberry; Karl R. Stapelfeldt; Kate Yu-Ling Su; Erick T. Young

doi:10.1086/422822

New debris-disk candidates: 24 Micron stellar excesses at 100 million years

Nadya Gorlova, Deborah L. Padgett, George H. Rieke, James Muzerolle, Jane E. Morrison, Karl D. Gordon, Chad W. Engelbracht, Dean C. Hines, Joannah L Hinz, Alberto Noriega-Crespo, Luisa Rebull, John A. Stansberry, Karl R. Stapelfeldt, Kate Yu-Ling Su, Erick T. Young

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42 Scopus citations

Abstract

Sixty-three members of the 100 Myr old open cluster M47 (NGC 2422) have been detected at 24 μm with the Spitzer Space Telescope. The Be star V 378 Pup shows an excess both in the near-infrared and at 24 μm (K - [24] = 2.4 mag), probably due to free-free emission from the gaseous envelope. Seven other early-type stars show smaller excesses, K - [24] = 0.6-0.9. Among late-type stars, two show large excesses: P922, a K1 V star with K - [24] = 1.08 ± 0.11, and P1121, an F9 V star with K - [24] = 3.72 ± 0.02. P1121 is the first known main-sequence star showing an excess comparable to that of β Pic, which may indicate the presence of an exceptionally massive debris disk. It is possible that a major planetesimal collision has occurred in this system, consistent with the few hundred Myr timescales estimated for the clearing of the solar system.

Original language	English (US)
Pages (from-to)	448-452
Number of pages	5
Journal	Astrophysical Journal, Supplement Series
Volume	154
Issue number	1
DOIs	https://doi.org/10.1086/422822
State	Published - Sep 2004

Keywords

Infrared: stars
Open clusters and associations: individual (M47)
Planetary systems: protoplanetary disks

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/422822

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Gorlova, N., Padgett, D. L., Rieke, G. H., Muzerolle, J., Morrison, J. E., Gordon, K. D., Engelbracht, C. W., Hines, D. C., Hinz, J. L., Noriega-Crespo, A., Rebull, L., Stansberry, J. A., Stapelfeldt, K. R., Su, K. Y.-L., & Young, E. T. (2004). New debris-disk candidates: 24 Micron stellar excesses at 100 million years. Astrophysical Journal, Supplement Series, 154(1), 448-452. https://doi.org/10.1086/422822

Gorlova, N, Padgett, DL, Rieke, GH, Muzerolle, J, Morrison, JE, Gordon, KD, Engelbracht, CW, Hines, DC, Hinz, JL, Noriega-Crespo, A, Rebull, L, Stansberry, JA, Stapelfeldt, KR, Su, KY-L & Young, ET 2004, 'New debris-disk candidates: 24 Micron stellar excesses at 100 million years', Astrophysical Journal, Supplement Series, vol. 154, no. 1, pp. 448-452. https://doi.org/10.1086/422822

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title = "New debris-disk candidates: 24 Micron stellar excesses at 100 million years",

abstract = "Sixty-three members of the 100 Myr old open cluster M47 (NGC 2422) have been detected at 24 μm with the Spitzer Space Telescope. The Be star V 378 Pup shows an excess both in the near-infrared and at 24 μm (K - [24] = 2.4 mag), probably due to free-free emission from the gaseous envelope. Seven other early-type stars show smaller excesses, K - [24] = 0.6-0.9. Among late-type stars, two show large excesses: P922, a K1 V star with K - [24] = 1.08 ± 0.11, and P1121, an F9 V star with K - [24] = 3.72 ± 0.02. P1121 is the first known main-sequence star showing an excess comparable to that of β Pic, which may indicate the presence of an exceptionally massive debris disk. It is possible that a major planetesimal collision has occurred in this system, consistent with the few hundred Myr timescales estimated for the clearing of the solar system.",

keywords = "Infrared: stars, Open clusters and associations: individual (M47), Planetary systems: protoplanetary disks",

author = "Nadya Gorlova and Padgett, {Deborah L.} and Rieke, {George H.} and James Muzerolle and Morrison, {Jane E.} and Gordon, {Karl D.} and Engelbracht, {Chad W.} and Hines, {Dean C.} and Hinz, {Joannah L} and Alberto Noriega-Crespo and Luisa Rebull and Stansberry, {John A.} and Stapelfeldt, {Karl R.} and Su, {Kate Yu-Ling} and Young, {Erick T.}",

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doi = "10.1086/422822",

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pages = "448--452",

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T2 - 24 Micron stellar excesses at 100 million years

AU - Gorlova, Nadya

AU - Padgett, Deborah L.

AU - Rieke, George H.

AU - Muzerolle, James

AU - Morrison, Jane E.

AU - Gordon, Karl D.

AU - Engelbracht, Chad W.

AU - Hines, Dean C.

AU - Hinz, Joannah L

AU - Noriega-Crespo, Alberto

AU - Rebull, Luisa

AU - Stansberry, John A.

AU - Stapelfeldt, Karl R.

AU - Su, Kate Yu-Ling

AU - Young, Erick T.

PY - 2004/9

Y1 - 2004/9

N2 - Sixty-three members of the 100 Myr old open cluster M47 (NGC 2422) have been detected at 24 μm with the Spitzer Space Telescope. The Be star V 378 Pup shows an excess both in the near-infrared and at 24 μm (K - [24] = 2.4 mag), probably due to free-free emission from the gaseous envelope. Seven other early-type stars show smaller excesses, K - [24] = 0.6-0.9. Among late-type stars, two show large excesses: P922, a K1 V star with K - [24] = 1.08 ± 0.11, and P1121, an F9 V star with K - [24] = 3.72 ± 0.02. P1121 is the first known main-sequence star showing an excess comparable to that of β Pic, which may indicate the presence of an exceptionally massive debris disk. It is possible that a major planetesimal collision has occurred in this system, consistent with the few hundred Myr timescales estimated for the clearing of the solar system.

AB - Sixty-three members of the 100 Myr old open cluster M47 (NGC 2422) have been detected at 24 μm with the Spitzer Space Telescope. The Be star V 378 Pup shows an excess both in the near-infrared and at 24 μm (K - [24] = 2.4 mag), probably due to free-free emission from the gaseous envelope. Seven other early-type stars show smaller excesses, K - [24] = 0.6-0.9. Among late-type stars, two show large excesses: P922, a K1 V star with K - [24] = 1.08 ± 0.11, and P1121, an F9 V star with K - [24] = 3.72 ± 0.02. P1121 is the first known main-sequence star showing an excess comparable to that of β Pic, which may indicate the presence of an exceptionally massive debris disk. It is possible that a major planetesimal collision has occurred in this system, consistent with the few hundred Myr timescales estimated for the clearing of the solar system.

KW - Infrared: stars

KW - Open clusters and associations: individual (M47)

KW - Planetary systems: protoplanetary disks

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New debris-disk candidates: 24 Micron stellar excesses at 100 million years

Abstract

Keywords

ASJC Scopus subject areas

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