J/ApJ/845/44 340GHz SMA obs. of 50 nearby protoplanetary disks (Tripathi+, 2017)
A millimeter continuum size-luminosity relationship for protoplanetary disks.
Tripathi A., Andrews S.M., Birnstiel T., Wilner D.J.
<Astrophys. J., 845, 44 (2017)>
=2017ApJ...845...44T 2017ApJ...845...44T
ADC_Keywords: YSOs ; Millimetric/submm sources ; Stars, diameters ;
Stars, distances ; Interstellar medium
Keywords: circumstellar matter; dust, extinction;
planets and satellites: formation; protoplanetary disks
Abstract:
We present a survey at subarcsecond resolution of the 340GHz dust
continuum emission from 50 nearby protoplanetary disks, based on new
and archival observations with the Submillimeter Array. The observed
visibility data were modeled with a simple prescription for the radial
surface brightness profile. The results were used to extract
intuitive, empirical estimates of the emission "size" for each disk,
Reff, defined as the radius that encircles a fixed fraction of the
total continuum luminosity, Lmm. We find a significant correlation
between the sizes and luminosities, such that Reff∝Lmm0.5,
providing a confirmation and quantitative characterization of a
putative trend that was noted previously. This correlation suggests
that these disks have roughly the same average surface brightness
interior to their given effective radius, ∼0.2Jy/arcsec2 (or 8K in
brightness temperature). The same trend remains, but the 0.2dex of
dispersion perpendicular to this relation essentially disappears, when
we account for the irradiation environment of each disk with a crude
approximation of the dust temperatures based on the stellar host
luminosities. We consider two (not mutually exclusive) explanations
for the origin of this size-luminosity relationship. Simple models of
the growth and migration of disk solids can account for the observed
trend for a reasonable range of initial conditions, but only on
timescales that are much shorter than the nominal ages present in the
sample. An alternative scenario invokes optically thick emission
concentrated on unresolved scales, with filling factors of a few tens
of percent, which is perhaps a manifestation of localized particle
traps.
Description:
A sample of 50 nearby (d≤200pc) disk targets was collated from the
archived catalog of ∼340GHz (880um) continuum measurements made with
the Submillimeter Array (SMA), since the start of science operations
in 2004.
Of the 50 disks in our survey, 10 were recently observed by us
expressly for the purposes of the present study. To our knowledge, the
SMA observations of 18 targets have not yet been published elsewhere.
Table 1 is a brief SMA observation log, with references for where the
data originally appeared (observations span 2005 jun 12 to 2015 Jan 19).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 34 149 Observations log for the 50 targets
table2.dat 67 50 Imaging parameters
table4.dat 96 50 Size-luminosity relation and associated parameters
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See also:
I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)
J/AJ/117/354 : OB associations from Hipparcos (de Zeeuw+, 1999)
J/ApJ/734/98 : DISCS. II. Southern sky disk data (Oberg+, 2011)
J/ApJ/751/115 : mm emission from Taurus binary systems (Harris+, 2012)
J/ApJ/771/129 : Submillimetric Class II sources of Taurus (Andrews+, 2013)
J/ApJ/773/168 : Submm fluxes of very low-mass stars and BDs (Mohanty+, 2013)
J/MNRAS/435/1671 : SCUBA-2 850um survey in σOri cluster (Williams+, 2013)
J/ApJ/784/62 : Circumstellar disks around Taurus bin. stars (Akeson+, 2014)
J/ApJ/802/77 : Protoplanetary disk masses in NGC 2024 cluster (Mann+, 2015)
J/ApJ/826/16 : ALMA & GeMS observations of the OMC1 region (Eisner+, 2016)
J/ApJ/827/142 : ALMA obs. of GKM stars in Upper Sco (Barenfeld+, 2016)
J/ApJ/828/46 : ALMA survey of Lupus protoplanetary disks. I. (Ansdell+,
2016)
J/ApJ/831/125 : ALMA 887µm obs. of ChaI region (Pascucci+, 2016)
J/AJ/153/240 : Protoplanetary disks in sigma Ori with ALMA (Ansdell+, 2017)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 17 A17 --- Name Target identifier (G1)
19- 29 A11 "Y/M/D" Date UT date of the observation
31 A1 --- Config SMA configuration (1)
33- 34 I2 --- Ref [1/21] Reference code (2)
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Note (1): SMA configuration as follows:
S = sub-compact (6-70m baselines);
C = compact (9-75m baselines);
E = extended (17-225m baselines);
V = very extended (24-509m baselines).
Note (2): Reference as follows:
1 = Brown et al (2008ApJ...675L.109B 2008ApJ...675L.109B);
2 = Andrews et al (2011ApJ...732...42A 2011ApJ...732...42A);
3 = Momose et al (2010ApJ...712..397M 2010ApJ...712..397M);
4 = Espaillat et al (2015ApJ...807..156E 2015ApJ...807..156E);
5 = this paper;
6 = Andrews et al (2013, J/ApJ/771/129);
7 = Harris et al (2012, J/ApJ/751/115);
8 = Hughes et al (2009ApJ...698..131H 2009ApJ...698..131H);
9 = Isella et al (2010ApJ...714.1746I 2010ApJ...714.1746I);
10 = Trotta et al (2013A&A...558A..64T 2013A&A...558A..64T);
11 = Qi et al (2008ApJ...681.1396Q 2008ApJ...681.1396Q);
12 = Hughes et al (2099ApJ...704.1204H 2099ApJ...704.1204H);
13 = Andrews et al (2012ApJ...744..162A 2012ApJ...744..162A);
14 = Brown et al (2009ApJ...704..496B 2009ApJ...704..496B);
15 = Mathews et al (2012ApJ...745...23M 2012ApJ...745...23M);
16 = Andrews et al (2010ApJ...723.1241A 2010ApJ...723.1241A);
17 = Andrews et al (2009ApJ...700.1502A 2009ApJ...700.1502A);
18 = Andrews & Williams (2007ApJ...659..705A 2007ApJ...659..705A);
19 = Andrews et al (2008ApJ...678L.133A 2008ApJ...678L.133A);
20 = Cieza et al (2012ApJ...750..157C 2012ApJ...750..157C);
21 = Qi et al (2011ApJ...740...84Q 2011ApJ...740...84Q).
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 17 A17 --- Name Target identifier (G1)
19- 20 I2 h RAh Hour of right ascension (J2000)
22- 23 I2 min RAm Minute of right ascension (J2000)
25- 29 F5.2 s RAs Second of right ascension (J2000)
31 A1 --- DE- Sign of declination (J2000)
32- 33 I2 deg DEd Degree of declination (J2000)
35- 36 I2 arcmin DEm Arcminute of declination (J2000)
38- 42 F5.2 arcsec DEs Arcsecond of declination (J2000)
44- 48 F5.1 GHz nu [334.9/349.1] Mean frequence ν
50- 53 F4.2 arcsec Beam1 Beam 1
54 A1 --- --- [x]
55- 58 F4.2 arcsec Beam2 Beam 2
60- 62 I3 deg PA [8/177] Beam position angle
64- 67 F4.1 mJy/beam rms [0.7/10] rms noise level
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 17 A17 --- Name Target identifier (G1)
19 A1 --- l_logReff Limit flag on logReff
20- 23 F4.2 [au] logReff [1/2.3] Effective radius
25- 28 F4.2 [au] e_logReff [0.01/0.5]? Negative uncertainty on logReff
30- 33 F4.2 [au] E_logReff ? Positive uncertainty on logReff
35- 39 F5.2 [Jy] logLmm [-1.7/0.2] Log of the millimeter continuum
luminosity
41- 44 F4.2 [Jy] e_logLmm Negative uncertainty on logLmm
46- 49 F4.2 [Jy] E_logLmm [0.01/0.5] Positive uncertainty on logLmm
51- 55 F5.2 mas Plx [3/17] Mean parallax (barω)
57- 60 F4.2 mas e_Plx [0.06/1.7] Plx uncertainty
62- 64 I3 pc Dist [59/297] Distance
66- 67 I2 pc e_Dist Negative uncertainty on Dist
69- 71 I3 pc E_Dist [1/130] Positive uncertainty on Dist
73- 77 F5.2 Lsun L* [0.07/33.1] Stellar host luminosity
79- 82 F4.2 Lsun e_L* Negative uncertainty on Lsun
84- 88 F5.2 Lsun E_L* [0.05/15] Positive uncertainty on Lsun
90- 91 I2 K Td [8/62] Estimated average dust temperature
93 I1 K e_Td Negative uncertainty on Td
95- 96 I2 K E_Td [1/67] Positive uncertainty on Td
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Global note:
Note (G1): In all tables, RX J1633.9-2422 is a misprint for RX J1633.9-2442;
corrected in CDS tables.
History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 08-Mar-2018