List of Publications
|
Refereed Journals |
- A. Müller, A. Seifahrt, R. Launhardt, Th. Henning, J.U. Pott, J. Setiawan,
A. Sicilia-Aguilar, A.L. Uribe, R. van Boekel, M.E. van den Ancker,
``A massive planet inside the disk of the Herbig Fe star HD 142527'',
A&A, submitted (2012).
- M. Goto, G. van der Plas, M.E. van den Ancker, C.P. Dullemond, A. Carmona, Th. Henning,
G. Meeus, H. Linz, B. Stecklum,
``Warm gas at 50 AU in the disk around the Herbig Be star HD 100546'',
A&A, in press (2012).
- A.P. Verhoeff, L.B.F.M. Waters, M.E. van den Ancker, M. Min, F.A. Stap,
E. Pantin, R. van Boekel, B. Acke, A.G.G.M. Tielens, A. de Koter,
``A mid IR study of Herbig Be stars'',
A&A 538, A101-A129 (2012).
- A. Müller, A. Carmona, M.E. van den Ancker, R. van Boekel, Th. Henning,
R. Launhardt,
``HD 144432: A young triple system'',
A&A 535, L3--L7 (2011).
<preprint>
- A. Carmona, G. van der Plas, M. Audard, M.E. van den Ancker,
L.B.F.M. Waters, D. Fedele, B. Acke, E. Pantin,
``A survey for near-infrared H2 emission in Herbig Ae/Be stars: emission from
the outer disks of HD 97048 and HD 100546'',
A&A 533, 39--55 (2011).
<preprint>
- A. Kospal, P. Abraham, M. Goto, Z. Regaly, C.P. Dullemond, Th. Henning,
A. Juhasz, A. Sicilia-Aguilar, M.E. van den Ancker,
``Near-Infrared Spectroscopy of EX Lupi in Outburst'',
ApJ 736, 72--83 (2011).
- G. van der Plas, M.E. van den Ancker, C. Dominik, L.B.F.M. Waters,
``The structure of disks around Herbig Ae/Be stars, as traced by CO ro-vibrational emission'',
A&A, submitted (2011).
- A. Müller, M.E. van den Ancker, R. Launhardt, J.U. Pott, D. Fedele, Th. Henning,
``HD 135344B: a young star has reached its rotational limit'',
A&A 530, 85--94 (2011).
<preprint>
- M. Goto, Z. Regaly, C.P. Dullemond, M.E. van den Ancker, J. Brown, A. Carmona,
K. Pontoppidan, D. Fedele, A. Sicilia-Aguilar, R. van Boekel, Th. Henning, A. Juhász,
P. Ábrahám, L. Mosoni, A, Kóspal, E. van Dishoeck, G.A. Blake, H. Terada, T. Usada,
``Fundamental Vibrational Transition of CO during Outburst of EX Lupi in 2008'',
ApJ 728, 5--28 (2011).
<preprint>
- B. Acke, J. Bouwman, A. Juhász, Th. Henning, M.E. van den Ancker, G. Meeus,
A.G.G.M. Tielens, L.B.F.M. Waters,
``Spitzer's view on aromatic and aliphatic hydrocarbon emission in Herbig Ae stars'',
ApJ 718, 558-574 (2010).
<preprint>
- A. Juhász, J. Bouwman, Th. Henning, B. Acke, M.E. van den Ancker, G. Meeus,
C. Dominik, M. Min, A.G.G.M. Tielens, L.B.F.M. Waters,
``Dust evolution in protoplanetary disks around Herbig Ae/Be stars - The Spitzer view'',
ApJ 721, 431--455 (2010).
<preprint>
- A. Bik, E. Puga, L.B.F.M. Waters, M. Horrobin, Th. Henning, T. Vasyunina, H. Beuther,
H. Linz, L. Kaper, M.E. van den Ancker, A. Lenorzer, E. Churchwell, S. Kurtz,
M.B.N. Kouwenhoven, A. Stolte, A. de Koter, W.F. Thi, N.L. Martin-Hernandez,
F. Comeron, C. Waelkens,
``Sequential Star Formation in RCW 34: A Spectroscopic Census of the Stellar Content
of High-Mass Star Forming Regions'',
ApJ 713, 883--899 (2010).
<preprint>
- A. Carmona, M.E. van den Ancker, M. Audard, Th. Henning, J. Setiawan,
J. Rodmann,
``New Herbig Ae/Be Stars Confirmed Via High-Resolution Optical Spectroscopy'',
A&A 517, 67--81 (2010).
<preprint>
- A. de Ugarte Postigo, V. D'Elia, S. Piranomonte, P. Goldoni, D. Malesani, C.C. Thöne,
S. Covino, H. Flores, J.P.U. Fynbo, J. Hjorth, R.A.M.J. Wijers, S. D'Odorico, F. Hammer,
L. Kaper, P. Kjaergaard, S. Randich, M.I. Andersen, L.A. Antonelli, L. Christensen, P. D'Avanzo,
F. Fiore, P.J. Groot, E. Maiorano, E. Palazzi, E. Pian, G. Tagliaferri, M.E. van den Ancker,
S.D. Vergani, J. Vernet, P.M. Vreeswijk,
``GRB 090313: X-shooter's first shot at a GRB'',
A&A 513, 42--49(2010).
<preprint>
- A.P. Verhoeff, M. Min, B. Acke, R. van Boekel, E. Pantin, L.B.F.M. Waters,
A.G.G.M. Tielens, M.E. van den Ancker, G.D. Mulders, A. de Koter,
J. Bouwman,
``HD 95881: A gas rich to gas poor transition disk?'',
A&A 516, 48--57 (2010).
<preprint>
- D. Fedele, M.E. van den Ancker, Th. Henning, R. Jayawardhana, J. Oliveira,
``Timescale of Mass Accretion in Pre-Main Sequence Stars'',
A&A 510, 72--79 (2010).
<preprint>
- B. Acke, M. Min, M.E. van den Ancker, J. Bouwman, B. Ochsendorf, A. Juhasz,
L.B.F.M. Waters,
``On the interplay between flaring and shadowing in disks around Herbig Ae/Be stars'',
A&A 502, L17--L20 (2009).
<preprint>
- A.P. Verhoeff, L.B.F.M. Waters, H. Veerman, E. Pantin, M. Min, J.W. Pel,
A.G.G.M. Tielens, M.E. van den Ancker, R. van Boekel, C. Boersma, J. Bouwman,
C. Dominik, A. de Koter, P.O. Lagage, R.E. Peletier,
``VISIR spectroscopic and spatial survey of Herbig Ae stars'',
A&A, submitted (2009).
- G. van der Plas, M.E. van den Ancker, B. Acke, A. Carmona,
C. Dominik, D. Fedele, L.B.F.M. Waters,
``Evidence for CO depletion in the inner regions of gas-rich protoplanetary
disks'',
A&A 500, 1137--1141 (2009).
<preprint>
- K.A. Collins, C.A. Grady, K. Hamaguchi, J.P. Wisniewski, M. Sitko,
W.J. Carpenter, S. Brittain, G.M. Williger, R. van Boekel, A. Carmona,
M.E. van den Ancker, G. Meeus, X.P. Chen, R. Petre, B.E. Woodgate,
Th. Henning,
``HD 100453, a Transitional Disk System'',
ApJ 697, 557--572 (2009).
<preprint>
- D. Fedele, M.E. van den Ancker, B. Acke, G. van der Plas,
R. van Boekel, M. Wittkowski, Th. Henning, J. Bouwman, G. Meeus,
P. Rafanelli,
``The Structure of Protoplanetary Disks Surrounding Three Herbig
Ae/Be Stars. II. Spatially resolved dust and gas distribution'',
A&A 491, 809--820 (2008).
<preprint>
- M.R. Pérez, B. McCollum, M.E. van den Ancker, M.D. Joner,
``The Enigmatic Young Object Walker 90/V590 Mon'',
A&A 486, 533--544 (2008).
<preprint>
- M.E. van den Ancker,
``On the Photometric Variability of the Pre-Main Sequence Binary
System KK Oph'',
A&A, submitted (2008).
- B. Acke, T. Verhoelst, M.E. van den Ancker, P. Deroo, C. Waelkens,
O. Chesneau, E. Tatulli, M. Benisty, E. Puga, L.B.F.M. Waters,
A. Verhoeff, A. de Koter,
``MWC 297: a young high-mass star rotating at critical velocity'',
A&A 485, 209--221 (2008).
<preprint>
- G. van der Plas, M.E. van den Ancker, D. Fedele, B. Acke,
C. Dominik, L.B.F.M. Waters, J. Bouwman,
``The Structure of Protoplanetary Disks Surrounding Three Herbig
Ae/Be Stars. I. Resolving the disk rotation in the [O I]
6300 Angstrom line'',
A&A 485, 487--495 (2008).
<preprint>
- A. Carmona, M.E. van den Ancker, Th. Henning, Y. Pavlyuchenkov,
C.P. Dullemond, M. Goto, W.F. Thi, J. Bouwman, L.B.F.M. Waters,
``A Search for Molecular Hydrogen Emission from Protoplanetary
Disks: Where is the Warm Gas?'',
A&A 477, 839--852 (2008).
<preprint>
- A. Carmona, M.E. van den Ancker, Th. Henning, M. Goto,
D. Fedele, B. Stecklum,
``Molecular Hydrogen Emission in the CTTS LkHα 264 and the
debris disk 49 Cet'',
A&A 476, 853--862 (2007).
<preprint>
- D. Fedele, M.E. van den Ancker, M.G. Petr-Gotzens, P. Rafanelli,
``Optical and infrared properties of the recent outburst of V1647 Ori:
II. Temporal evolution of the eruptive source'',
A&A 472, 207--218 (2007).
<preprint>
- D. Fedele, M.E. van den Ancker, M.G. Petr-Gotzens, N. Ageorges,
P. Rafanelli,
``Optical and infrared properties of the recent outburst of V1647 Ori:
I. The reflection nebula'',
A&A 472, 199--206 (2007).
<preprint>
- A. Carmona, M.E. van den Ancker, Th. Henning,
``Optical Spectroscopy of Close Companions to Herbig Ae/Be and T Tauri
Stars'',
A&A 464, 687--696 (2007).
<preprint>
- B. Acke, M.E. van den Ancker,
```A survey for nanodiamond features in the 3 micron spectra
of Herbig Ae/Be stars''',
A&A 457, 171--181 (2006).
<preprint>
- B. Acke, M.E. van den Ancker,
``Resolving the disk rotation of HD 100546 and HD 97048 in the
[O I] 6300 Angstrom line: Evidence for a giant planet orbiting HD 100546''
A&A 449, 267--280 (2006).
<preprint>
- M.E. van den Ancker,
``Mid-Infrared Imaging of a Young Bipolar Nebula in the S287 Molecular
Cloud'',
A&A 442, L57--L60 (2005).
<preprint>
- R. van Boekel, M. Min, L.B.F.M. Waters, A. de Koter, C. Dominik,
M.E. van den Ancker, J. Bouwman,
``A 10 micron spectroscopic survey of Herbig Ae/Be star disks:
grain growth and crystallization'',
A&A 437, 189--208 (2005).
<preprint>
- A. Carmona, M.E. van den Ancker, W.F. Thi, M. Goto,
Th. Henning,
``Upper limits on CO 4.7 micron emission from disks around five
Herbig Ae/Be stars'',
A&A 436, 977--982 (2005).
<preprint>
- B. Acke, M.E. van den Ancker, C.P. Dullemond,
``[O I] 6300 Angstrom emission in Herbig Ae/Be systems:
signature of Keplerian rotation'',
A&A 436, 209--230 (2005).
<preprint>
- B. Acke, M.E. van den Ancker,
``ISO Spectroscopy of Disks Around Herbig Ae/Be Stars'',
A&A 426, 151--170 (2004).
<preprint>
- Ch. Leinert, R. van Boekel, L.B.F.M. Waters, O. Chesneau,
F. Malbet, R. Köhler, W. Jaffe, Th. Ratzka, A. Dutrey,
Th. Preibisch, U. Graser, E. Bakker, G. Chagnon, W.D. Cotton,
C. Dominik, C.P. Dullemond, A.W. Glazenborg-Kluttig,
A. Glindemann, Th. Henning, K.-H. Hofmann, J. de Jong,
R. Lenzen, S. Ligori, B. Lopez, J. Meisner, S. Morel,
F. Paresce, J.-W. Pel, I. Percheron, G. Perrin,
F. Przygodda, A. Richichi, M. Schöller, P. Schuller,
B. Stecklum, M.E. van den Ancker, O. von der Lühe,
G. Weigelt,
``Mid-infrared sizes of circumstellar disks
around Herbig Ae/Be stars measured with MIDI on the VLTI'',
A&A 423, 537--548 (2004).
- M.E. van den Ancker, H.R.E. Tjin A Djie, P.F.C. Blondel, ,
K.N. Grankin, O.V. Ezhkova, V.S. Shevchenko, E. Guenther, B. Acke,
``The stellar composition of the star formation region CMa R1 -
III. A new outburst of the Be star component in Z CMa'',
MNRAS 349, 1516--1536 (2004).
<preprint>
- B. Acke, M.E. van den Ancker, C.P. Dullemond, R. van Boekel,
L.B.F.M. Waters,
``Correlation between grain growth and disk geometry in
Herbig Ae/Be systems'',
A&A 422, 621--626 (2004).
<preprint>
- M.E. van den Ancker, E.A. Magnier, A.W. Volp, L.B.F.M. Waters,
L. Kaper, L.-A. Nyman,
``IRAS 17340-3757: A Newly Identified Unusual Carbon Star'',
A&A, submitted.
<preprint>
- M.R. Pérez, M.E. van den Ancker, D. de Winter, B.W. Bopp,
``A young and complex binary star - HD 144432'',
A&A 416, 647--654 (2004).
<preprint>
- C.P. Dullemond, M.E. van den Ancker, B. Acke, R. van Boekel,
``Explaining UXOR variability with self-shadowed disks'',
ApJ 594, L47--L50 (2003).
<preprint>
- M.E. van den Ancker, F. Fortuin, L.B.F.M. Waters,
``A study of infrared recombination lines in Herbig Ae/Be stars''
A&A, submitted.
<preprint>
- D. de Winter, M.E. van den Ancker, A. Maira, P.S. Thé,
H.R.E. Tjin A Djie, I. Redondo, C. Eiroa, F.J. Molster,
``A Photometric Catalogue of Southern Emission-Line Stars'',
A&A 380, 609--614 (2001).
<abstract>
<reprint>
<tables>
- H.R.E. Tjin A Djie, M.E. van den Ancker, P.F.C. Blondel,
V.S. Shevchenko, O. Ezhkova, D. de Winter, K.N. Grankin,
``The Stellar Composition of the Star Formation Region CMa R1:
II. Spectroscopic and Photometric Observations of 9 Young Stars'',
MNRAS 325, 1441--1457 (2001).
<abstract>
<reprint>
- M.E. van den Ancker, A.G.G.M. Tielens, P.R. Wesselius,
``ISO Spectroscopy of PDRs and Shocks in Star Forming Regions'',
A&A, submitted. <preprint>
- W.F. Thi, E.F. van Dishoeck, G.A. Blake, G.J. van Zadelhoff,
J. Horn, E.E. Becklin, V. Mannings, A.I. Sargent, M.E. van den Ancker,
A. Natta, J. Kessler,
``H2 and CO emission from disks around T Tauri and Herbig Ae
pre-main-sequence stars and from debris disks around young stars: warm and
cold circumstellar gas'',
ApJ 561, 1074--1094 (2001).
<abstract>
<reprint>
- M.E. van den Ancker, G. Meeus, J. Cami, L.B.F.M. Waters,
C. Waelkens,
``The composition of circumstellar gas and dust in 51 Oph'',
A&A 369, L17--L21 (2001).
<abstract>
<reprint>
- G. Meeus, L.B.F.M. Waters, J. Bouwman, M.E. van den Ancker,
C. Waelkens, K. Malfait,
``ISO spectroscopy of circumstellar dust in 14 Herbig Ae/Be systems:
towards and understanding of dust processing'', A&A 365, 476--490 (2001).
<abstract>
<reprint>
- W.F. Thi, G.A. Blake, E.F. van Dishoeck, G.J. van Zadelhoff,
J. Horn, E.E. Becklin, V. Mannings, A.I. Sargent, M.E. van den Ancker,
A. Natta,
``Substantial reservoirs of molecular gas in the debris disks around
young stars'', Nature 409, 60--63 (2001).
<abstract>
<preprint>
- M.E. van den Ancker, M.R. Pérez, D. de Winter, B. McCollum,
``A young stellar group associated with HD 199143 (d = 48 pc)'',
A&A 363, L25--L28 (2000).
<abstract>
<reprint>
- M.E. van den Ancker, P.S. Thé, D. de Winter,
``The central part of the young open cluster NGC 6383'',
A&A 362, 580--584 (2000).
<abstract>
<reprint>
- J. Bouwman, A. de Koter, M.E. van den Ancker, L.B.F.M. Waters,
``The Composition of the Circumstellar Dust Around
the Herbig Ae Stars AB Aur and HD 163296'', A&A 360, 213--226 (2000).
<abstract>
<reprint>
- M.E. van den Ancker, A.G.G.M. Tielens, P.R. Wesselius,
``ISO Spectroscopy of the Young Bipolar Nebulae S106 IR and
Cep A East'', A&A 358, 1035--1048 (2000).
<abstract>
<reprint>
- M.E. van den Ancker, J. Bouwman, P.R. Wesselius,
L.B.F.M. Waters, S.M. Dougherty, E.F. van Dishoeck,
``ISO Spectroscopy of Circumstellar Dust in the Herbig Ae Systems
AB Aur and HD 163296'', A&A 357, 325--329 (2000).
<abstract>
<reprint>
- M.E. van den Ancker, P.R. Wesselius, A.G.G.M. Tielens,
``ISO Spectroscopy of Young Intermediate-Mass Stars in the
BD+40°4124 Group'', A&A 355, 194--210 (2000).
<abstract>
<reprint>
- L. Spinoglio, T. Giannini, B. Nisini, M.E. van den Ancker,
E. Caux, A.M. Di Giorgio, D. Lorenzetti, F. Palla, S. Pezzuto,
P. Saraceno, H.A. Smith, G.J. White,
``Shock excited far-infrared molecular emission around T Tau'',
A&A 353, 1055--1064 (2000).
<abstract>
<reprint>
- E.A. Magnier, A.W. Volp, K. Laan, M.E. van den Ancker,
L.B.F.M. Waters, ``Transitional YSOs: candidates from flat-spectrum
IRAS sources'', A&A 352, 228--238 (1999).
<abstract>
<reprint>
<images>
- F.J. Molster, I. Yamamura, L.B.F.M. Waters, A.G.G.M. Tielens,
Th. de Graauw, T. de Jong, A. de Koter, K. Malfait,
M.E. van den Ancker, H. van Winckel, R.H.M. Voors, C. Waelkens,
``Low-temperature crystallization of silicate dust in
circumstellar disks'', Nature 401, 563--565 (1999).
<reprint>
- M.E. van den Ancker, P.R. Wesselius, A.G.G.M. Tielens,
E.F. van Dishoeck, L. Spinoglio,
``ISO spectroscopy of shocked gas in the vicinity of T Tau'',
A&A 348, 877--887 (1999).
<abstract>
<reprint>
- M.E. van den Ancker, A.W. Volp, M.R. Pérez, D. de Winter,
``Near-IR photometry and optical spectroscopy of the
Herbig Ae star AB Aurigae'', IAU Inf. Bull. Var. Stars 4704, 1--4 (1999).
<reprint>
- V.S. Shevchenko, O.V. Ezhkova, M.A. Ibrahimov,
M.E. van den Ancker, H.R.E. Tjin A Djie,
``The Stellar Composition of the Star Formation Region CMa R1:
I. Results from new photometric and spectroscopic classifications'',
MNRAS 310, 210--222 (1999).
<abstract>
<reprint>
<movies>
- T. Belloni, S. Dieters, M.E. van den Ancker, R. Fender,
D.W. Fox, B.A. Harmon, M. van der Klis, J.M. Kommers, W.H.G. Lewin,
J. van Paradijs,
``On the nature of XTE J0421+650/CI Cam'', ApJ 527, 345--352 (1999).
<abstract>
<reprint>
- D.A. Weintraub, G. Sandell, T.L. Huard, J.H. Kastner,
M.E. van den Ancker, L.B.F.M. Waters,
``Submillimeter Imaging of T Tauri's Circumbinary Disk and the
Discovery of a Protostar in Hind's Nebula'', ApJ 517, 819--828 (1999).
<abstract>
<reprint>
- E.A. Magnier, L.B.F.M. Waters, P.J. Groot, M.E. van den Ancker,
Y.J. Kuan, E.L. Martín,
``The circumstellar environment of Holoea (IRAS 05327+3404)'',
A&A 346, 441--452 (1999).
<abstract>
<reprint>
- D. de Winter, C.A. Grady, M.E. van den Ancker,
M.R. Pérez, C. Eiroa,
``Accretion around the Herbig Ae star BF Ori: Evidence for the
presence of extra-solar comets'',
A&A 343, 137--150 (1999).
<abstract>
<reprint>
- M.E. van den Ancker, D. de Winter, H.R.E. Tjin A Djie,
``Hipparcos photometry of Herbig Ae/Be stars'', A&A, 330, 145--154 (1998).
<abstract>
<reprint>
- M.E. van den Ancker, P.S. Thé, H.R.E. Tjin A Djie,
C. Catala, D. de Winter, P.F.C. Blondel, L.B.F.M. Waters,
``Hipparcos data on Herbig Ae/Be stars: an evolutionary scenario'',
A&A 324, L33--L36 (1997).
<abstract>
<reprint>
- V.S. Shevchenko, O. Ezhkova, H.R.E. Tjin A Djie,
M.E. van den Ancker, P.F.C. Blondel, D. de Winter,
``The FUOR characteristics of the PMS star BN Orionis'',
A&AS 124, 33--54 (1997).
<abstract>
<reprint>
<tables>
- M.E. van den Ancker, P.S. Thé, A. Feinstein, R.A. Vázquez,
D. de Winter, M.R. Pérez, ``A multiwavelength study of star
formation in the very young open cluster NGC 6530'', A&AS 123, 63--82 (1997).
<abstract>
<reprint>
<tables>
- D. de Winter, M.E. van den Ancker,
``The peculiar B[e] star HD 45677. II. Photometric behaviour and
spectroscopic properties'', A&AS 121, 275--299 (1997).
<abstract>
<reprint>
- D. de Winter, C. Koulis, P.S. Thé, M.E. van den Ancker,
M.R. Pérez, ``Candidates of pre-main sequence stars in the very
young open cluster NGC 6611'', A&AS 121, 223--242 (1997).
<abstract>
<reprint>
<tables>
- F.J. Molster, M.E. van den Ancker, A.G.G.M. Tielens,
L.B.F.M. Waters, D.A. Beintema, C. Waelkens, T. de Jong, Th. de Graauw,
K. Justtanont, I. Yamamura, B. Vandenbussche, A. Heras,
``The shape and strength of circumstellar PAH emission bands'',
A&A 315, L373--L376 (1996).
<abstract>
<reprint>
- D.A. Beintema, M.E. van den Ancker, F.J. Molster, L.B.F.M. Waters,
A.G.G.M. Tielens, C. Waelkens, T. de Jong, Th. de Graauw,
K. Justtanont, I. Yamamura, A. Heras, F. Lahuis, A. Salama,
``The rich spectrum of circumstellar PAHs'', A&A 315, L369--L372 (1996).
<abstract>
<reprint>
- L.B.F.M. Waters, F.J. Molster, T. de Jong, D.A. Beintema,
C. Waelkens, A.C.A. Boogert, D.R. Boxhoorn, Th. de Graauw, S. Drapatz,
H. Feuchtgruber, R. Genzel, F.P. Helmich, A.M. Heras, R. Huygen,
H. Izumiura, K. Justtanont, D.J.M. Kester, D. Kunze, F. Lahuis,
H.J.G.L.M. Lamers, K.J. Leech, C. Loup, D. Lutz, P.W. Morris,
S.D. Price, P.R. Roelfsema, A. Salama, S.G. Schaeidt, A.G.G.M. Tielens,
N.R. Trams, E.A. Valentijn, B. Vandenbussche, M.E. van den Ancker,
E.F. van Dishoeck, H. van Winckel, P.R. Wesselius, E.T. Young,
``Mineralogy of Oxygen-rich dust shells'', A&A 315, L361--L364 (1996).
<abstract>
<reprint>
- P.R. Wesselius, M.E. van den Ancker, E.T. Young, F.O. Clark, T. Prusti, P.R. Roelfsema, C. Waelkens, D.H. Wooden, D.R. Boxhoorn, A.M. Heras, R. Huygen, D.J.M. Kester, F. Lahuis, ``ISO SWS Observations of H2 in the BD+40°4124 group'', A&A 315, L197--L200 (1996).