J/ApJ/752/58 α Per cluster members (Zuckerman+, 2012)
Stellar membership and dusty debris disks in the α Persei cluster.
Zuckerman B., Melis C., Rhee J.H., Schneider A., Song I.
<Astrophys. J., 752, 58 (2012)>
=2012ApJ...752...58Z 2012ApJ...752...58Z
ADC_Keywords: Clusters, open ; Proper motions ; Spectral types
Keywords: circumstellar matter;
open clusters and associations: individual: alf Persei
Abstract:
Because of its proximity to the Galactic plane, reliable
identification of members of the α Persei cluster is often
problematic. Based primarily on membership evaluations contained in
six published papers, we constructed a mostly complete list of
high-fidelity members of spectral type G and earlier that lie within 3
arc degrees of the cluster center. α Persei was the one nearby,
rich, young open cluster not surveyed with the Spitzer Space
Telescope. We examined the first and final data releases of the
Wide-field Infrared Survey Explorer (WISE) and found 11, or perhaps
12, α Per cluster members that have excess mid-infrared emission
above the stellar photosphere attributable to an orbiting dusty debris
disk. The most unusual of these is V488 Per, a K-type star with an
excess IR luminosity 16% (or more) of the stellar luminosity; this is
a larger excess fraction than that of any other known dusty
main-sequence star. Much of the dust that orbits V488 Per is at a
temperature of ∼800 K; if these grains radiate like blackbodies, then
they lie only ∼0.06 AU from the star. The dust is probably the
aftermath of a collision of two planetary embryos or planets with
small semimajor axes; such orbital radii are similar to those of many
of the transiting planets discovered by the Kepler satellite.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 87 149 High-fidelity α Persei cluster members
table2.dat 85 33 Possible α Persei cluster members
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See also:
I/68 : Positions and Proper Motions in alpha Per cluster (Fresneau, 1980)
I/315 : UCAC3 Catalogue (Zacharias+ 2009)
I/259 : The Tycho-2 Catalogue (Hog+ 2000)
V/80 : Low-Mass Stars' Membership in Alpha Persei Cluster (Prosser 1992)
J/MNRAS/426/3403 : UKIDSS-GCS α Per members (Lodieu+, 2012)
J/A+A/488/409 : Radial velocities of α Per stars (Mermilliod+, 2008)
J/AJ/131/2967 : α Persei open cluster members (Makarov+, 2006)
J/PASP/118/636 : Alpha Per HR spectral atlas at 3810-8100Å (Lee+, 2006)
J/A+A/416/125 : RI photometry in alpha Per and Pleiades (Deacon+, 2004)
J/AJ/123/1570 : alpha Persei and Praesepe Clusters (Patience+, 2002)
J/A+A/395/813 : Alpha Per faint stars photometry (Barrado y Navascues+, 2002)
J/A+A/345/471 : Memberships of open clusters (Robichon+, 1999)
J/AN/319/215 : Alpha Per cluster low-mass members. II. (Prosser+, 1998)
J/AN/319/201 : Alpha Per cluster low-mass members. I. (Prosser+, 1998)
J/AN/283/109 : Star positions in the region of alpha Per (Heckmann+, 1956)
http://www.univie.ac.at/webda/ : WEBDA home page
Byte-by-byte Description of file: table[12].dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Name Star name
17- 18 I2 h RAh 2MASS hour of right ascension (J2000)
20- 21 I2 min RAm Minute of right ascension (J2000)
23- 26 F4.1 s RAs Second of right ascension (J2000)
28 A1 --- DE- 2MASS sign of declination (J2000)
29- 30 I2 deg DEd 2MASS degree of declination (J2000)
32- 33 I2 arcmin DEm Arcminute of declination (J2000)
35- 36 I2 arcsec DEs Arcsecond of declination (J2000)
38- 41 F4.1 mas/yr pmRA [15/34] Proper motion along RA (1)
43- 45 F3.1 mas/yr e_pmRA [0.5/9.3] pmRA uncertainty (1)
47- 51 F5.1 mas/yr pmDE [-39/-17] Proper motion along DEC (1)
53- 55 F3.1 mas/yr e_pmDE [0.5/9.1] pmDE uncertainty (1)
57- 62 A6 --- SpT MK spectral type
64- 67 I4 --- HE [7/1349]? Sequential number in Heckmann+,
1956, Cat. J/AN/283/109;
<Cl Melotte 20 NNNN> in Simbad
69- 72 A4 --- Pr? Membership from Prosser (2)(3)
74 A1 --- f_Pr? [a] Flag on Pr? (2)
76 A1 --- Ma? Membership from Makarov, 2006,
Cat. J/AJ/131/2967 (3)
78- 79 A2 --- St? Membership from Stauffer et al.,
1993AJ....106..229S 1993AJ....106..229S (3)
81 A1 --- Me? Membership from Mermilliod et al., 2008,
Cat. J/A+A/488/409 (3)
83 A1 --- Rob? Membership from Robichon et al., 1999,
Cat. J/A+A/345/471 (3)
85 A1 --- Ran? Membership from Randich et al.,
1996A&A...305..785R 1996A&A...305..785R (3)
87 A1 --- Ex E = MIR emission excess with WISE fluxes
indicated in table 3 of the paper
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Note (1): Most listed proper motions are from the Tycho-2 or UCAC3 catalog.
Note (2): Membership from Prosser C.F., 1992, Cat. V/80;
If "*" is present in col. "Pr?", then also in Prosser 1994AJ....107.1422P 1994AJ....107.1422P
If "a", then cluster member from Prosser et al. 1998, Cat. J/AN/319/215
Note (3): thesse evaluations are taken directly from the cited papers and
have not been reevaluated by the authors of the current study; meaning:
y = yes, member;
y? = probably member;
? = membership uncertain;
n? = probably nonmember;
n = nonmember.
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History:
From electronic version of the journal
(End) Emmanuelle Perret [CDS] 31-Jan-2014