The Library

The MUCHFUSS project – searching for hot subdwarf binaries with massive unseen companions

Tools

Geier, S., Hirsch, H., Tillich, A., Maxted, P. F. L., Bentley, S. J., Østensen, R. H., Heber, U., Gaensicke, B. T., Marsh, T. R., Napiwotzki, Ralf, Barlow, B. N. and O’Toole, S. J.. (2011) The MUCHFUSS project – searching for hot subdwarf binaries with massive unseen companions. Astronomy & Astrophysics, Vol.530 . A28. ISSN 0004-6361

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1051/0004-6361/201015316

Abstract

The project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS (MUCHFUSS) aims at finding sdBs with compact companions like supermassive white dwarfs (M > 1.0 Msun), neutron stars or black holes. The existence of such systems is predicted by binary evolution theory and recent discoveries indicate that they are likely to exist in our Galaxy. A determination of the orbital parameters is sufficient to put a lower limit on the companion mass by calculating the binary mass function. If this lower limit exceeds the Chandrasekhar mass and no sign of a companion is visible in the spectra, the existence of a massive compact companion is proven without the need for any additional assumptions. We identified about 1100 hot subdwarf stars from the SDSS by colour selection and visual inspection of their spectra. Stars with high velocities have been reobserved and individual SDSS spectra have been analysed. In total 127 radial velocity variable subdwarfs have been discovered. Binaries with high RV shifts and binaries with moderate shifts within short timespans have the highest probability of hosting massive compact companions. Atmospheric parameters of 69 hot subdwarfs in these binary systems have been determined by means of a quantitative spectral analysis. The atmospheric parameter distribution of the selected sample does not differ from previously studied samples of hot subdwarfs. The systems are considered the best candidates to search for massive compact companions by follow-up time resolved spectroscopy.

Item Type:

Journal Article

Subjects:

Q Science > QB Astronomy

Divisions:

Faculty of Science > Physics

Library of Congress Subject Headings (LCSH):

Double stars -- Spectra, Dwarf stars

Journal or Publication Title:

Astronomy & Astrophysics

Publisher:

EDP Sciences

ISSN:

0004-6361

Official Date:

June 2011

Dates:

Date	Event
June 2011	Published

Volume:

Vol.530

Number of Pages:

Page Range:

A28

Identification Number:

10.1051/0004-6361/201015316

Status:

Peer Reviewed

Publication Status:

Published

Access rights to Published version:

Restricted or Subscription Access

Funder:

Deutsche Forschungsgemeinschaft (DFG), Seventh Framework Programme (European Commission) (FP7), European Research Council (ERC), Katholieke Universiteit te Leuven (1970- ), National Science Foundation (U.S.) (NSF)

Grant number:

HE1356/45-1 (DFG), HE1356/49-1 (DFG), and HE1356/44-1 (DFG), FP7/2007–2013 (FP7), 227224 (ERC), GOA/2008/04 (KUL), AST-0707381 (NSF)

References:

Abazajian, K., Adelman-McCarthy, J. K., Agüeros, M. A., et al. 2009, ApJS,
182, 543
Ahmad, A., Jeffery, C. S., & Fullerton, A. W. 2004, A&A, 418, 275
Altmann, M., Edelmann, H., & de Boer, K. S. 2004, A&A, 414, 181
Badenes, C., Mullally, F., Thompson, S. E., & Lupton, R. H. 2009, ApJ, 707,
971
Bloemen, S., Marsh, T. R., Østensen, R. H., et al. 2011, MNRAS, 410, 1787
Brown, W. R., Geller, M. J., Kenyon, S. J., et al. 2005, AJ, 130, 109
Castelli, F., & Kurucz, R. L. 2003, IAU Symp., 210, 20
Catelan, M. 2009, Ap&SS, 320, 261
Dorman, B., Rood, R. T., & O’Connell, R. W. 1993, ApJ, 419, 596
Drechsel, H., Heber, U., Napiwotzki, R., et al. 2001, A&A, 379, 893
Edelmann, H. 2008, ASP Conf. Ser., 392, 187
Edelmann, H., Heber, U., Hagen, H.-J., et al. 2003, A&A, 400, 939
Edelmann, H., Heber, U., Lisker, T., & Green, E. M. 2004, Ap&SS, 291, 315
Edelmann, H., Heber, U., Altmann, M., Karl, C., & Lisker, T. 2005, A&A, 442,
1023
Eisenstein, D. J., Liebert, J., Harris, H. C., et al. 2006, ApJS, 167, 40
For., B.-Q., Green, E. M., O’Donoghue, D., et al. 2006, ApJ, 642, 1117
For, B.-Q., Edelmann, H., Green, E. M., et al. 2008, ASP Conf. Ser., 392, 203
For, B.-Q., Green, E. M., Fontaine, G., et al. 2010, ApJ, 708, 253
Geier, S., Nesslinger, S., Heber, U., et al. 2007, A&A, 464, 299
Geier, S., Nesslinger, S., Heber, U., et al. 2008, A&A, 477, L13
Geier, S., Heber, U., Kupfer, T., & Napiwotzki, R. 2010a, A&A, 515, A37
Geier, S., Heber, U., Podsiadlowski, Ph., et al. 2010b, A&A, 519, A25
Geier, S., Maxted, P. F. L., Napiwotzki, R., et al., 2011, A&A, 526, A39
Gray, D. F. 1992, The observation and analysis of stellar photospheres, 2nd edn.
(Cambridge: University Press)
Green, E. M., Fontaine, G., Hyde, E. A., For, B.-Q., & Chayer, P. 2008, ASP
Conf. Ser., 392, 75
Green, R. F., Schmidt, M., & Liebert, J. 1986, ApJS, 61, 305
Green, E. M., For, B., Hyde, E. A., et al. 2004, Ap&SS, 291, 267
Green, E. M., For, B., Hyde, E. A., et al. 2005, ASP Conf. Ser., 334, 363
Han, Z. 2008, A&A, 484, L31
Han Z., Podsiadlowski P., Maxted P. F. L., Marsh T. R., & Ivanova N. 2002,
MNRAS, 336, 449
Han, Z., Podsiadlowski, P.,Maxted, P. F. L., & Marsh, T. R. 2003, MNRAS, 341,
669
Heber, U. 1986, A&A, 155, 33
Heber, U. 2009, ARA&A, 47, 211
Heber, U., Drechsel, H., Østensen, R., et al. 2004, A&A, 420, 251
Hirsch, H., & Heber, U. 2009, JPhCS, 172, 2015
Iben, I., & Tutukov, A. V. 1984, ApJ, 284, 719
Jester, S., Schneider, D. P., Richards, G. T., et al. 2005, AJ, 130, 873
Karl, C., Heber, U., Napiwotzki, R., & Geier, S. 2006, Baltic Astron., 15, 151
Kawka, A., Vennes, S., Németh, P., Kraus, M., & Kubát, J. 2010, MNRAS, 408,
992
Kilic, M., Brown,W. E., Allende Prieto, C., & Kenyon, S. J. 2010, ApJ, 716, 122
Kleinman, S. J. 2010, AIP Conf. Ser., 1237, 156
Koen, C. 2009, MNRAS, 393, 1370
Koen, C., Kilkenny, D., O’Donoghue, D., van Wyk, F., & Stobie, R. S. 1997,
MNRAS, 285, 645
Koen, C., Kilkenny, D., Pretorius, M. L., & Frew, D. J. 2010, MNRAS, 401,
1850
Leibundgut, B. 2001, ARA&A, 39, 67
Lisker, T., Heber, U., Napiwotzki, R., et al. 2005, A&A, 430, 223
Marsh, T. R., Gaensicke, B. T., Steeghs, D., et al. 2010, ApJL, submitted
[arXiv:1002.4677]
Maxted, P. F. L., Marsh, T. R., & North, R. C. 2000a, MNRAS, 317, L41
Maxted, P. F. L., Moran, C. K. J., Marsh, T. R., & Gatti, A. A. 2000b, MNRAS,
311, 877
Maxted, P. F. L., Heber, U., Marsh, T. R., & North, R. C. 2001, MNRAS, 326,
139
Maxted, P. F. L., Marsh, T. R., Heber, U., et al. 2002, MNRAS, 333, 231
Maxted, P. F. L., Morales-Rueda, L., & Marsh, T. 2004, Ap&SS, 291, 307
Mereghetti, S., Tiengo, A., Esposito, P., et al. 2009, Science, 325, 1222
Momany, Y., Bedin, L. R., Cassisi, S., et al. 2004, A&A, 420, 605
Morales-Rueda, L., Maxted, P. F. L., Marsh, T. R., North, R. C., & Heber, U.
2003a, MNRAS, 338, 752
Morales-Rueda, L., Marsh, T. R., North, R. C., & Maxted, P. F. L. 2003b, in
White Dwarfs, ed. D. de Martino, R. Silvotti, J.-E. Solheim, & R. Kalytis, 57
Morales-Rueda, L.,Maxted, P. F. L.,Marsh, T. R., Kilkenny, D., & O’Donoghue,
D. 2005, ASP Conf. Ser., 334, 333
Morales-Rueda, L.,Maxted, P. F. L.,Marsh, T. R., Kilkenny, D., & O’Donoghue,
D. 2006, Baltic Astron., 15, 187
Moran, C., Maxted, P. F. L., Marsh, T. R., Saffer, R. A., & Livio, M. 1999,
MNRAS, 304, 535
Müller, S., Geier, S., & Heber, U. 2010, unpublished [arXiv:1012.3908]
Mullally, F., Badenes, C., Thompson, S. E., & Lupton, R. 2009, ApJ, 707, 51
Napiwotzki, R. 2008, ASP Conf. Ser., 392, 139
Napiwotzki, R., Edelmann, H., Heber, U., et al. 2001, A&A, 378, L17
Napiwotzki, R., Karl, C., Lisker, T., et al. 2004a, Ap&SS, 291, 321
Napiwotzki, R., Yungelson, L., Nelemans, G., et al. 2004b, ASP Conf. Ser., 318,
402
Nelemans, G. 2010, Ap&SS, 329, 25
Newell, E. B. 1973, ApJS, 26, 37
Østensen, R., Oreiro, R., Drechsel, H., et al. 2007, ASP Conf. Ser., 372, 483
Østensen, R., Green, E. M., Bloemen, S., et al. 2010, MNRAS, 408, 51
Orosz, J. A., & Wade, R. A. 1999, MNRAS, 310, 773
O’Toole, S. J., Heber, U., & Benjamin, R. A. 2004, A&A, 422, 1053
O’Toole, S. J., Napiwotzki, R., Heber, U., et al. 2006, Baltic Astron., 15, 61
Perets, H. B., Gal-Yam, A., Mazzali, P. A., et al. 2010, Nature, 465, 322
Perlmutter, S., Aldering, G., Goldhaber, G., et al. 1999, ApJ, 517, 565
Pfahl, E., Rappaport, S., & Podsiadlowski, Ph. 2003, ApJ, 597, 1036
Podsiadlowski, Ph., Rappaport, S., & Pfahl, E. D. 2002, ApJ, 565, 1107
Polubek, G., Pigulski, A., Baran, A., & Udalski, A. 2007, ASP Conf. Ser., 372,
487
Ramspeck, M., Heber, U., & Edelmann, H. 2001, A&A, 379, 235
Rebassa-Mansergas, A., Gänsicke, B. T., Rodr´guez-Gil., P., Schreiber, M. R., &
Koester, D. 2007, MNRAS, 382, 1377
Reed, M., Terndrup, D. N., Østensen, R. H., et al. 2010, Ap&SS, 329, 83
Riess, A. G., Fillipenko, A. V., Challis, P., et al. 1998, AJ, 116, 1009
Ritter, H., & Kolb, U. 2009, VizieR Online Data Catalog, 1, 2018
Shimanskii, V. V., Bikmaev, I. F., Borisov, N. V., et al. 2008, ARep, 52, 729
Ströer, A., Heber, U., Lisker, T., et al. 2007, A&A, 462, 269
Tillich, A., Heber, U., Geier, S., et al. 2011, A&A, 527, A137
Vuˇckovi´c, M., Aerts, C., Østensen, R., et al. 2007, A&A, 471, 605
Vuˇckovi´c, M., Østensen, R., Bloemen, S., Decoster, I., & Aerts, C. 2008, ASP
Conf. Ser., 392, 199
Webbink, R. F. 1984, ApJ, 277, 355
Wils, P., di Scala, G., & Otero, S. 2007, IBVS, 5800, 1
York, D. G., Adelman, J., Anderson, J. E., et al. 2000, AJ, 120, 1579
Yungelson, L. R., & Tutukov, A. V. 2005, ARep, 49, 871
Wang, B., Meng, X., Chen, X., & Han, Z. 2009, MNRAS, 395, 847