Embedded protostars in the dust, ice, and gas in time (DIGIT) Herschel key program: continuum SEDs, and an inventory of characteristic far-infrared lines from PACs spectroscopy

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Embedded protostars in the dust, ice, and gas in time (DIGIT) Herschel key program : continuum SEDs, and an inventory of characteristic far-infrared lines from PACs spectroscopy. / Green, Joel D.; Evans II, Neal J.; Jørgensen, Jes Kristian; Herczeg, Gregory J.; Kristensen, Lars E; Lee, Jeong-Eun; Dionatos, Odyssefs; Yildiz, Umut A.; Salyk, Colette; Meeus, Gwendolyn; Bouwman, Jeroen; Visser, Ruud; Bergin, Edwin A.; van Dishoeck, Ewine F.; Rascati, Michelle R.; Karska, Agata; van Kempen, Tim A.; Dunham, Michael M.; Lindberg, Johan; Fedele, Davide.

I: The Astrophysical Journal, Bind 770, Nr. 2, 123, 20.06.2013.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Green, JD, Evans II, NJ, Jørgensen, JK, Herczeg, GJ, Kristensen, LE, Lee, J-E, Dionatos, O, Yildiz, UA, Salyk, C, Meeus, G, Bouwman, J, Visser, R, Bergin, EA, van Dishoeck, EF, Rascati, MR, Karska, A, van Kempen, TA, Dunham, MM, Lindberg, J & Fedele, D 2013, 'Embedded protostars in the dust, ice, and gas in time (DIGIT) Herschel key program: continuum SEDs, and an inventory of characteristic far-infrared lines from PACs spectroscopy', The Astrophysical Journal, bind 770, nr. 2, 123. https://doi.org/10.1088/0004-637X/770/2/123

APA

Green, J. D., Evans II, N. J., Jørgensen, J. K., Herczeg, G. J., Kristensen, L. E., Lee, J-E., Dionatos, O., Yildiz, U. A., Salyk, C., Meeus, G., Bouwman, J., Visser, R., Bergin, E. A., van Dishoeck, E. F., Rascati, M. R., Karska, A., van Kempen, T. A., Dunham, M. M., Lindberg, J., & Fedele, D. (2013). Embedded protostars in the dust, ice, and gas in time (DIGIT) Herschel key program: continuum SEDs, and an inventory of characteristic far-infrared lines from PACs spectroscopy. The Astrophysical Journal, 770(2), [123]. https://doi.org/10.1088/0004-637X/770/2/123

Vancouver

Green JD, Evans II NJ, Jørgensen JK, Herczeg GJ, Kristensen LE, Lee J-E o.a. Embedded protostars in the dust, ice, and gas in time (DIGIT) Herschel key program: continuum SEDs, and an inventory of characteristic far-infrared lines from PACs spectroscopy. The Astrophysical Journal. 2013 jun. 20;770(2). 123. https://doi.org/10.1088/0004-637X/770/2/123

Author

Green, Joel D. ; Evans II, Neal J. ; Jørgensen, Jes Kristian ; Herczeg, Gregory J. ; Kristensen, Lars E ; Lee, Jeong-Eun ; Dionatos, Odyssefs ; Yildiz, Umut A. ; Salyk, Colette ; Meeus, Gwendolyn ; Bouwman, Jeroen ; Visser, Ruud ; Bergin, Edwin A. ; van Dishoeck, Ewine F. ; Rascati, Michelle R. ; Karska, Agata ; van Kempen, Tim A. ; Dunham, Michael M. ; Lindberg, Johan ; Fedele, Davide. / Embedded protostars in the dust, ice, and gas in time (DIGIT) Herschel key program : continuum SEDs, and an inventory of characteristic far-infrared lines from PACs spectroscopy. I: The Astrophysical Journal. 2013 ; Bind 770, Nr. 2.

Bibtex

@article{9094b99dd162466fb8664a9044cb7f40,
title = "Embedded protostars in the dust, ice, and gas in time (DIGIT) Herschel key program: continuum SEDs, and an inventory of characteristic far-infrared lines from PACs spectroscopy",
abstract = "We present 50-210 um spectral scans of 30 Class 0/I protostellar sources, obtained with Herschel-PACS, and 0.5-1000 um SEDs, as part of the Dust, Ice, and Gas in Time (DIGIT) Key Program. Some sources exhibit up to 75 H2O lines ranging in excitation energy from 100-2000 K, 12 transitions of OH, and CO rotational lines ranging from J=14-13 up to J=40-39. [O I] is detected in all but one source in the entire sample; among the sources with detectable [O I] are two Very Low Luminosity Objects (VeLLOs). The mean 63/145 um [O I] flux ratio is 17.2 +/- 9.2. The [O I] 63 um line correlates with Lbol, but not with the time-averaged outflow rate derived from low-J CO maps. [C II] emission is in general not local to the source. The sample Lbol increased by 1.25 (1.06) and Tbol decreased to 0.96 (0.96) of mean (median) values with the inclusion of the Herschel data. Most CO rotational diagrams are characterized by two optically thin components ( = (0.70 +/- 1.12) x 10^49 total particles). N_CO correlates strongly with Lbol, but neither Trot nor N_CO(warm)/N_CO(hot) correlates with Lbol, suggesting that the total excited gas is related to the current source luminosity, but that the excitation is primarily determined by the physics of the interaction (e.g., UV- heating/shocks). Rotational temperatures for H2O ( = 194 +/- 85 K) and OH ( = 183 +/- 117 K) are generally lower than for CO, and much of the scatter in the observations about the best fit is attributed to differences in excitation conditions and optical depths amongst the detected lines.",
keywords = "astro-ph.GA",
author = "Green, {Joel D.} and {Evans II}, {Neal J.} and J{\o}rgensen, {Jes Kristian} and Herczeg, {Gregory J.} and Kristensen, {Lars E} and Jeong-Eun Lee and Odyssefs Dionatos and Yildiz, {Umut A.} and Colette Salyk and Gwendolyn Meeus and Jeroen Bouwman and Ruud Visser and Bergin, {Edwin A.} and {van Dishoeck}, {Ewine F.} and Rascati, {Michelle R.} and Agata Karska and {van Kempen}, {Tim A.} and Dunham, {Michael M.} and Johan Lindberg and Davide Fedele",
year = "2013",
month = jun,
day = "20",
doi = "10.1088/0004-637X/770/2/123",
language = "English",
volume = "770",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing, Inc",
number = "2",

}

RIS

TY - JOUR

T1 - Embedded protostars in the dust, ice, and gas in time (DIGIT) Herschel key program

T2 - continuum SEDs, and an inventory of characteristic far-infrared lines from PACs spectroscopy

AU - Green, Joel D.

AU - Evans II, Neal J.

AU - Jørgensen, Jes Kristian

AU - Herczeg, Gregory J.

AU - Kristensen, Lars E

AU - Lee, Jeong-Eun

AU - Dionatos, Odyssefs

AU - Yildiz, Umut A.

AU - Salyk, Colette

AU - Meeus, Gwendolyn

AU - Bouwman, Jeroen

AU - Visser, Ruud

AU - Bergin, Edwin A.

AU - van Dishoeck, Ewine F.

AU - Rascati, Michelle R.

AU - Karska, Agata

AU - van Kempen, Tim A.

AU - Dunham, Michael M.

AU - Lindberg, Johan

AU - Fedele, Davide

PY - 2013/6/20

Y1 - 2013/6/20

N2 - We present 50-210 um spectral scans of 30 Class 0/I protostellar sources, obtained with Herschel-PACS, and 0.5-1000 um SEDs, as part of the Dust, Ice, and Gas in Time (DIGIT) Key Program. Some sources exhibit up to 75 H2O lines ranging in excitation energy from 100-2000 K, 12 transitions of OH, and CO rotational lines ranging from J=14-13 up to J=40-39. [O I] is detected in all but one source in the entire sample; among the sources with detectable [O I] are two Very Low Luminosity Objects (VeLLOs). The mean 63/145 um [O I] flux ratio is 17.2 +/- 9.2. The [O I] 63 um line correlates with Lbol, but not with the time-averaged outflow rate derived from low-J CO maps. [C II] emission is in general not local to the source. The sample Lbol increased by 1.25 (1.06) and Tbol decreased to 0.96 (0.96) of mean (median) values with the inclusion of the Herschel data. Most CO rotational diagrams are characterized by two optically thin components ( = (0.70 +/- 1.12) x 10^49 total particles). N_CO correlates strongly with Lbol, but neither Trot nor N_CO(warm)/N_CO(hot) correlates with Lbol, suggesting that the total excited gas is related to the current source luminosity, but that the excitation is primarily determined by the physics of the interaction (e.g., UV- heating/shocks). Rotational temperatures for H2O ( = 194 +/- 85 K) and OH ( = 183 +/- 117 K) are generally lower than for CO, and much of the scatter in the observations about the best fit is attributed to differences in excitation conditions and optical depths amongst the detected lines.

AB - We present 50-210 um spectral scans of 30 Class 0/I protostellar sources, obtained with Herschel-PACS, and 0.5-1000 um SEDs, as part of the Dust, Ice, and Gas in Time (DIGIT) Key Program. Some sources exhibit up to 75 H2O lines ranging in excitation energy from 100-2000 K, 12 transitions of OH, and CO rotational lines ranging from J=14-13 up to J=40-39. [O I] is detected in all but one source in the entire sample; among the sources with detectable [O I] are two Very Low Luminosity Objects (VeLLOs). The mean 63/145 um [O I] flux ratio is 17.2 +/- 9.2. The [O I] 63 um line correlates with Lbol, but not with the time-averaged outflow rate derived from low-J CO maps. [C II] emission is in general not local to the source. The sample Lbol increased by 1.25 (1.06) and Tbol decreased to 0.96 (0.96) of mean (median) values with the inclusion of the Herschel data. Most CO rotational diagrams are characterized by two optically thin components ( = (0.70 +/- 1.12) x 10^49 total particles). N_CO correlates strongly with Lbol, but neither Trot nor N_CO(warm)/N_CO(hot) correlates with Lbol, suggesting that the total excited gas is related to the current source luminosity, but that the excitation is primarily determined by the physics of the interaction (e.g., UV- heating/shocks). Rotational temperatures for H2O ( = 194 +/- 85 K) and OH ( = 183 +/- 117 K) are generally lower than for CO, and much of the scatter in the observations about the best fit is attributed to differences in excitation conditions and optical depths amongst the detected lines.

KW - astro-ph.GA

U2 - 10.1088/0004-637X/770/2/123

DO - 10.1088/0004-637X/770/2/123

M3 - Journal article

VL - 770

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 2

M1 - 123

ER -

ID: 48904660