J/ApJ/913/123 ALMA survey of protoplanetary disks in Lynds 1641 (Grant+, 2021)
An ALMA survey of protoplanetary disks in Lynds 1641.
Grant S.L., Espaillat C.C., Wendeborn J., Tobin J.J., Macias E.,
Rilinger A., Ribas A., Megeath S.T., Fischer W.J., Calvet N.,
Kim K.H.
<Astrophys. J., 913, 123 (2021)>
=2021ApJ...913..123G 2021ApJ...913..123G
ADC_Keywords: Photometry, millimetric/submm; Spectral types; YSOs;
Carbon monoxide; Surveys; Star Forming Region
Keywords: Protoplanetary disks ; Millimeter astronomy ; Surveys ;
Circumstellar matter
Abstract:
We present ALMA observations of 101 protoplanetary disks within the
star-forming region Lynds 1641 in the Orion Molecular Cloud A. Our
observations include 1.33 mm continuum emission and spectral windows
covering the J=2-1 transition of 12CO, 13CO, and C18O. We detect
89 protoplanetary disks in the dust continuum at the 4σ level
(∼88% detection rate) and 31 in 12CO, 13 in 13CO, and 4 in C18O.
Our sample contains 23 transitional disks, 20 of which are detected in
the continuum. We target infrared-bright Class II objects, which
biases our sample toward massive disks. We determine dust masses or
upper limits for all sources in our sample and compare our sample to
protostars in this region. We find a decrease in dust mass with
evolutionary state. We also compare this sample to other regions
surveyed in the (sub)millimeter and find that Lynds 1641 has a
relatively massive dust disk population compared to regions of similar
and older ages, with a median dust mass of 11.1-4.6+32.9M⊕
and 27% with dust masses equal to or greater than the minimum solar
nebula dust mass value of ∼30M⊕. We analyze the disk
mass-accretion rate relationship in this sample and find that the
viscous disk lifetimes are similar to the age of the region, though
with a large spread. One object, [MGM2012] 512, shows a large-scale
(>5000au) structure in both the dust continuum and the three gas
lines. We discuss potential origins for this emission, including an
accretion streamer with large dust grains.
Description:
Our sample of 101 protoplanetary disks in L1641 was observed on
2019 December 12, 13, and 16 as part of Cycle 7 (Project ID:
2019.1.00951.S; PI: Grant).
These observations were carried out in Band 6 with 43-44 antennas and
baselines from 15 to 313m. The time on each source was ∼24s per
observation date, adding up to a total of 72s for each target for an
average rms of 0.12mJy/beam. Two continuum windows are included, each
with a bandwidth of 1.875GHz, centered at 231.986 and 216.987GHz.
Three spectral windows are included to observe the 12CO, 13CO, and
C18O J=2-1 transitions, each with a bandwidth of 0.117GHz and
centered at 230.524, 220.385, and 219.547GHz, respectively.
Objects:
----------------------------------------------------------
RA (ICRS) DE Designation(s)
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05 39 00.00 -07 00 00.0 L1641 = LDN 1641
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File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 97 101 1.33mm continuum properties
table2.dat 63 8 Additional detected objects not included in
the analysis
table3.dat 34 34 CO gas properties
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
I/352 : Distances to 1.47 billion stars in Gaia EDR3 (Bailer-Jones+, 2021)
J/ApJS/101/117 : UBVRIJHKLMNQ photometry in Taurus-Auriga (Kenyon+ 1995)
J/ApJ/662/1067 : Sptizer observations of sigma Orionis (Hernandez+, 2007)
J/A+A/504/461 : YSOs in L1630N and L1641 (Fang+, 2009)
J/ApJ/752/59 : Low-mass population in L1641 (Hsu+, 2012)
J/AJ/144/31 : Spitzer+2MASS phot. of protostar cand. (Kryukova+, 2012)
J/AJ/144/192 : Spitzer survey of Orion A & B. I. YSO cat. (Megeath+, 2012)
J/ApJ/771/129 : Submillimetric Class II sources of Taurus (Andrews+, 2013)
J/ApJS/207/5 : YSOs in LDN 1641 with Hectochelle spectra (Fang+, 2013)
J/ApJS/208/9 : Intrinsic colors & temperatures of PMS stars (Pecaut+, 2013)
J/ApJ/768/99 : X-ray survey of YSOs in Orion A (Pillitteri+, 2013)
J/ApJ/767/36 : APEX observations of HOPS protostars (Stutz+, 2013)
J/ApJ/788/59 : Model for circumstellar disks gas mass (Williams+, 2014)
J/ApJ/828/46 : ALMA survey of Lupus protopl. disks. I. (Ansdell+, 2016)
J/ApJ/827/142 : ALMA obs. of GKM stars in Upper Sco (Barenfeld+, 2016)
J/ApJ/826/16 : ALMA & GeMS observations of the OMC1 region (Eisner+, 2016)
J/ApJS/224/5 : Herschel Orion Protostar Survey (HOPS): SEDs (Furlan+, 2016)
J/ApJS/226/8 : Spitzer survey of ClassII objects in Orion A (Kim+, 2016)
J/ApJ/821/52 : NIR survey of Spitzer YSOs in Orion (Kounkel+, 2016)
J/ApJ/831/125 : ALMA 887µm obs. of ChaI (Pascucci+, 2016)
J/AJ/153/240 : ALMA survey of protopl. disks in sigma Ori (Ansdell+, 2017)
J/ApJ/834/142 : GOBELINS. II. OMC (Kounkel+, 2017)
J/ApJ/847/31 : Protoplanetary disk data in Cha I and Lupus (Mulders+, 2017)
J/ApJ/869/L41 : DSHARP I. ALMA obs. log and overview (Andrews+, 2018)
J/ApJ/863/13 : Herschel obs. of protopl. disks in L1641 (Grant+, 2018)
J/A+A/619/A106 : 3D shape of Orion A from Gaia DR2 (Grossschedl+, 2018)
J/MNRAS/478/3674 : IC 348 circumstellar discs ALMA data (Ruiz-Rodriguez+, 2018)
J/A+A/622/A149 : Vienna survey in Orion. III. (Grossschedl+, 2019)
J/A+A/626/A11 : Corona Australis ALMA and X-Shooter data (Cazzoletti+, 2019)
J/MNRAS/482/698 : Ophiuchus DIsc Survey Employing ALMA. I. (Cieza+, 2019)
J/A+A/628/A85 : Disk masses in Orion Molecular Cloud-2 (van Terwisga+, 2019)
J/ApJ/875/L9 : ODISEA: Disk dust mass distributions (Williams+, 2019)
J/ApJ/905/119 : HOPS: Herschel/PACS 70 and 160um obs. (Fischer+, 2020)
J/ApJ/890/130 : VANDAM survey of Orion protostars. II. (Tobin+, 2020)
J/A+A/640/A27 : Protoplanetary disk masses in NGC 2024 (van Terwisga+, 2020)
J/A+A/648/A33 : ALMA continuum images of TW Hya (Macias+, 2021)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- [MGM2012] [198/1086] Megeath+ (2012, J/AJ/144/192)
identifier
6- 7 I2 h RAh [5] Hour of Right Ascension (J2000)
9- 10 I2 min RAm [34/43] Minute of Right Ascension (J2000)
12- 15 F4.1 s RAs Second of Right Ascension (J2000)
17- 17 A1 --- DE- [-] Sign of the Declination (J2000)
18- 19 I2 deg DEd [6/8] Degree of Declination (J2000)
21- 22 I2 arcmin DEm Arcminute of Declination (J2000)
24- 27 F4.1 arcsec DEs Arcsecond of Declination (J2000)
29- 32 A4 --- SpT Spectral Type (1)
34- 36 I3 pc Dist [280/800] Distance
38- 41 I4 pc e_Dist [5/1000] Uncertainty on Dist
43- 43 A1 --- f_Dist Flag on Dist (2)
45- 45 A1 --- l_F1.33mm Limit flag on F1.33mm
46- 51 F6.2 mJy F1.33mm [0.48/36.4] 1.33mm flux density
53- 56 F4.2 mJy e_F1.33mm [0.1]? Uncertainty on F1.33mm
58- 58 A1 --- l_Mdust Limit flag on Mdust
59- 64 F6.2 Mgeo Mdust [1.6/171] Dust mass, Earth units,
assuming Dist
66- 71 F6.2 Mgeo e_Mdust [0.4/200]? Uncertainty on Mdust
73- 76 F4.2 arcsec FWHM [0.1/0.5]? Major axis, Gaussian fit (3)
78- 81 F4.2 arcsec e_FWHM [0.01/0.07]? Uncertainty in FWHM (3)
83- 86 F4.2 --- Ratio [0.5/1]? Major/minor axis ratio of
Gaussian fit (3)
88- 91 F4.2 --- e_Ratio [0.09/0.5]? Uncertainty in Ratio (3)
93- 94 I2 deg PA [0/80]? Position angle of Gaussian fit,
East of North (3)
96- 97 I2 deg e_PA [5/70]? Uncertainty in PA (3)
--------------------------------------------------------------------------------
Note (1): Spectral types were collected from the literature and are listed
with references in Grant+ (2018, J/ApJ/863/13).
Note (2): Flag as follows:
a = Objects either without distances in the Bailer-Jones+ 2021, I/352
catalog or with a Renormalized Unit Weight Error greater than 1.4;
these are listed with the distance of 428±10pc from
Kounkel+ 2017, J/ApJ/834/142
Note (3): uvmodelfit deconvolved Gaussian fits to the continuum images;
see Section 4.1.
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Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 1 I1 --- Seq [1/8] Sequential number identifier
3- 5 I3 --- [MGM2012] [379/995]? Megeath+ (2012, J/AJ/144/192)
identifier
7- 8 I2 h RAh [5] Hour of Right Ascension (J2000)
10- 11 I2 min RAm [35/42] Minute of Right Ascension (J2000)
13- 16 F4.1 s RAs Second of Right Ascension (J2000)
18- 18 A1 --- DE- [-] Sign of the Declination (J2000)
19- 20 I2 deg DEd [6/8] Degree of Declination (J2000)
22- 23 I2 arcmin DEm Arcminute of Declination (J2000)
25- 28 F4.1 arcsec DEs Arcsecond of Declination (J2000)
30- 33 F4.2 mJy F1.33mm [0.6/6.6] 1.33mm flux density
35- 38 F4.2 mJy e_F1.33mm [0.1/0.2] Uncertainty on F1.33mm
40- 40 A1 --- f_F1.33mm Flag on F1.33mm (1)
42- 45 F4.2 arcsec FWHM [0.32]? Major axis, Gaussian fit (2)
47- 50 F4.2 arcsec e_FWHM [0.07]? Uncertainty in FWHM (2)
52- 54 F3.1 --- Ratio [1]? Major/minor axis ratio of Gaussian fit (2)
56- 58 F3.1 --- e_Ratio [0.4]? Uncertainty in Ratio (2)
60- 60 I1 deg PA [0]? Position angle of Gaussian fit,
East of North (2)
62- 63 I2 deg e_PA [70]? Uncertainty in PA (2)
--------------------------------------------------------------------------------
Note (1): Flag as follows:
a = Objects where the uvmodelfit point source and Gaussian fits
did not converge in the same location, making these objects very
marginally detected. For these objects we report fluxes from imfit
instead.
Note (2): uvmodelfit deconvolved Gaussian fits to the continuum images;
see Section 4.1.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- [MGM2012] [198/1086] Megeath+ (2012, J/AJ/144/192)
identifier
6- 9 F4.2 Jy.km/s F12CO [0.1/2.93]? Flux, 12CO
11- 14 F4.2 Jy.km/s e_F12CO [0.02/0.2]? Uncertainty in FC12O
16- 19 F4.2 Jy.km/s F13CO [0.09/0.95]? Flux, 13CO
21- 24 F4.2 Jy.km/s e_F13CO [0.02/0.04]? Uncertainty in FC13O
26- 29 F4.2 Jy.km/s FC18O [0.08/0.45]? Flux, C18O
31- 34 F4.2 Jy.km/s e_FC18O [0.02/0.03]? Uncertainty in FC18O
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 30-Nov-2022